前言:

使用Android Studio开发,SQLite数据库,dialog对话框,Intent组件交互,java动态生成组件等技术。(博客最下方有所有代码。若不想复制粘贴,可下载源码

先展示效果图,别放弃!!

①初始课程表②右上角添加课程③填写信息④显示课程⑤长按显示详情

逻辑就是这么简单,程序亦是如此!

话不多说直接开始:

  • 我们把整个程序拆分,按照增量模型完成项目(先完成基础,也是核心功能)。
  • 先完成核心功能模块图一,再完成图二三四增加课程模块。
  • 最后完成图五非核心功能模块。
  • 测试每个模块之间衔接是否有bug。(我们希望是没有的,但时常事与愿违)

实现核心功能

  • 第一步:从需求、设计入手。

    • 一周有七天,一天有十节课。课程表结构的activity_main.xml框架设计大致如此。

    • 分析架构:

      • 最外层使用线性布局设置屏幕水平方向android:orientation=“horizontal”

      • 在内层使用八个GridLayout将屏幕分为八块。其中第一块是节课,后面的为周一至日。

        ​ 关键点:因为是水平排列的,所以权重和宽度相关联。把每个GridLayout的宽度设置为0dp。除第一个GridLayout权值为0.5其余设为1。目的是让第一列占比低一些。

      • 每一个GridLayout都设置为竖直方向android:orientation=“vertical”。目的是每一节课都是竖着往下排列的。

        ​ 关键点:同理,因为是竖直排列的,所以权重和高度有关。把每个GridLayout的高度设置为0dp。除第一个GridLayout权值为0.25其余设为1。目的是让第一行占比低一些。

      • 分析有了,上activity_main.xml代码:

        点击跳转到activity_main.xml

      • 发现xml并没有像图一有课程框。可以直接在activity_main.xml中依次添加,但是考虑到有7×10个EditText需要弄,还需要为每个EditText设置id(这个id之后非常关键),而且在xml写死的话对后期拓展(课程数量增加、减少、重构)很不便。所以我使用java在MainActivity中动态添加课程框。
    public class MainActivity extends AppCompatActivity{
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            //动态渲染课程框
            framework();
    
        }
        
        public void framework() {
    
            //创建一个GridLayout对象
            GridLayout gridLayout;
            //定义每个框的id,之后会动态改变id值
            int id = 1;
    
            //渲染每一列(周)
            for (int i = 1; i < 8; i++) {
    
                //注入GridLayout对应的列,根据星期几调用LayoutColumn方法
                gridLayout = LayoutColumn(i);
    
                //渲染每一行(节课)
                for (int j = 1; j < 10; j +=2) {
                    //声明一个新的TextView
                    TextView textView1 = new TextView(this);
    
                    //给TextView设置style样式
                    textView1.setId(id++);
                    textView1.setText("");
                    textView1.setMaxLines(5);
                    textView1.setEllipsize(TextUtils.TruncateAt.END);
                    textView1.setBackgroundColor(Color.parseColor("#F0FFFF"));
                    textView1.setGravity(Gravity.CENTER);
                    
                    //GridLayout.LayoutParams设置在此gridLayout列中TextView布局
                    GridLayout.LayoutParams params1 = new GridLayout.LayoutParams();
                    params1.setMargins(5,10,5,10);
                    params1.width = GridLayout.LayoutParams.MATCH_PARENT;
                    params1.height = 0;
                    //设置在gridLayout中的方位,参数1:在第几行。参数2:占几行。参数3:权值
                    //这个权值是根据xml中第一个gridLayout节课权值设定的。
                    params1.rowSpec = GridLayout.spec( j, 2,1);
                    
                    //把TextView和布局样式添加到此gridLayout中
                    gridLayout.addView(textView1, params1);
                }
    
            }
    
        }
    
        public GridLayout LayoutColumn(int i) {
    
            //防止空指针操作
            GridLayout gridLayout = findViewById(R.id.d1);
    
            //参数i:星期几。根据i寻找xml对应的GridLayout并注入。
            switch (i) {
                case 1: {
                    gridLayout = findViewById(R.id.d1);
                    break;
                }
                case 2: {
                    gridLayout = findViewById(R.id.d2);
                    break;
                }
                case 3: {
                    gridLayout = findViewById(R.id.d3);
                    break;
                }
                case 4: {
                    gridLayout = findViewById(R.id.d4);
                    break;
                }
                case 5: {
                    gridLayout = findViewById(R.id.d5);
                    break;
                }
                case 6: {
                    gridLayout = findViewById(R.id.d6);
                    break;
                }
                case 7: {
                    gridLayout = findViewById(R.id.d7);
                    break;
                }
            }
            return gridLayout;
        }
    }
    

    这样我们就完成了图一。

  • 第二步:有了基础架构,开始实现功能。

    • 把信息填写好了,如何保存?

    • 此时,需要考虑的是如何映射数据关系,即当需要添加课程,该如何定位到我选择的位置?这时候上面我们动态设置的id的作用就显示出来了。上述id是从1开始往下依次增加到36(7天×5节课)。可以通过星期几和第几节课算出对应该课程 id。

    • 最后,如何把填写的课程数据渲染到图一?

    我们依次解决上述问题:

    ​ 我们填写完课程信息后,把信息保存在SQLite中,重新加载MainActivity并渲染数据到课程表。

    1. 使用SLQLite数据库保存课程信息,SQLite数据库会存放在安卓手机内(具体介绍CSDN很多就不赘述)。

    MainActivity类同级目录创建DBHelper类(建classes_db表):

    public class DBHelper extends SQLiteOpenHelper {
    
        public SQLiteDatabase getWritableDatabase() {
            return super.getWritableDatabase();
        }
    
        public DBHelper(@Nullable Context context,
                        @Nullable String name,
                        @Nullable SQLiteDatabase.CursorFactory factory,
                        int version) {
    
            super(context, name, factory, version);
    
        }
    
        @Override
        public void onCreate(SQLiteDatabase sqLiteDatabase) {
            sqLiteDatabase.execSQL("create table classes_db" +
                    "(c_id Integer not null primary key autoincrement," +
                    " c_name varchar(50) not null," +
                    " c_time varchar(50) not null," +
                    " c_day varchar(50) not null," +
                    " c_teacher varchar(50) not null)");
    
            // 创建ContentValue设置参数
            ContentValues contentValues = new ContentValues();
    
            //课程名字
            contentValues.put("c_name", "0");
            //第几节课
            contentValues.put("c_time", "0");
            //星期几
            contentValues.put("c_day", "0");
            //任课教师
            contentValues.put("c_teacher", "0");
            
            //插入id 1-36 个课程数据,以便添加课程
            for (int i = 1; i < 37; i++) {
                contentValues.put("c_id", i);
                sqLiteDatabase.insert("classes_db", "", contentValues);
            }
    
        }
    
        @Override
        public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
    
        }
    
    }
    
    • 注意要在AndroidManifest.xml注册activity(不懂在哪粘贴不要紧,最后有全部代码):
    <activity android:name=".DialogModal"
        android:theme="@android:style/Theme.Dialog"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
    
            <category android:name="android.intent.category.DEFAULT" />
    
        </intent-filter>
    </activity>
    

    这时候就有一个classes_db表,有id分别为1-36记录存放对应课程数据。(这个id对应上述EditText的id)

  1. 添加课程dialog对话框(图二)用于把数据存放到上述classes_db表中:

    activity_main.xml同级目录下创建activity_set.xml:

    这里就不赘述基础了0.0

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    style="@style/MyModelSetting"
    android:layout_width="300dp"
    android:layout_height="450dp"
    android:background="#fff"
    android:orientation="vertical"
    tools:context=".DialogModal">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="添加课程"
        android:textSize="40dp"
        android:layout_gravity="center"
        android:textColor="@color/black"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_margin="10dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="时间:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <Spinner
            android:id="@+id/selected_day"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/day">
        </Spinner>



    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="节课:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <Spinner
            android:id="@+id/selected_time"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/time">
        </Spinner>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="科目:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <EditText
            android:id="@+id/subject"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="任课教师:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <EditText
            android:id="@+id/teacher"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="bottom">
        <Button
            android:id="@+id/close_activity"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="取消" />
        <Button
            android:id="@+id/save_activity"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="保存" />
    </LinearLayout>
</LinearLayout>

MainActivity类同级目录创建DialogModal类,处理课程数据,保存在数据库,并跳回MainActivity:

public class DialogModal extends Activity {
    Button close_activity;
    Button save_activity;
    Spinner selected_time;
    Spinner selected_day;
    EditText subject;
    EditText teacher;
    //数据库名,表名
    public final String DB_NAME = "classes_db.db";
    public final String TABLE_NAME = "classes_db";
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_set);

        //当点击dialog之外完成此activity
        setFinishOnTouchOutside (true);

        //关闭按钮操作
        close_activity=(Button) findViewById(R.id.close_activity);
        close_activity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                DialogModal.this.finish();
            }
        });

        //保存按钮操作
        save_activity = findViewById(R.id.save_activity);
        save_activity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent();

                selected_day = findViewById(R.id.selected_day);
                String day = selected_day.getSelectedItem().toString();

                if (day.equals("--请选择--")) {
                    save_activity.setError("");
                    return;
                }
                selected_time = findViewById(R.id.selected_time);
                String time = selected_time.getSelectedItem().toString();
                if (time.equals("--请选择--")) {
                    save_activity.setError("");
                    return;
                }

                subject = findViewById(R.id.subject);
                String text = subject.getText().toString();
                if ("".equals(text)) {
                    save_activity.setError("");
                    return;
                }

                teacher = findViewById(R.id.teacher);
                String teacher = subject.getText().toString();
                if ("".equals(teacher)) {
                    save_activity.setError("");
                    return;
                }

                //创建一个数据库对象,为了更新数据
                DBHelper dbHelper = new DBHelper(DialogModal.this, DB_NAME, null, 1);

                //把数据存在contentValues中
                ContentValues contentValues = new ContentValues();
                //combineId()方法目的是通过星期几和第几节课算出对应该课程id
                contentValues.put("c_id", combineId(day, time));
                contentValues.put("c_name", text);
                contentValues.put("c_time", time);
                contentValues.put("c_day", day);
                contentValues.put("c_teacher", teacher);

                //更新数据库记录
                update(dbHelper, contentValues);

                //清空栈内所有activity
                intent.setFlags(intent.FLAG_ACTIVITY_CLEAR_TASK);

                //启动MainActivity
                intent.setClass(DialogModal.this, MainActivity.class);
                startActivity(intent);
            }
        });
    }

    public String combineId(String day, String time) {

        //星期几转换成int类型
        int day1 = utils.getDay(day);

        //如1-2节课只取1
        int time1 = Integer.parseInt(time.substring(0, 1));
        
        return String.valueOf((day1 - 1) * 5 + ((time1 - 1)/2 + 1));
    }

    public void update(DBHelper dbHelper, ContentValues contentValues){

        String []a = {contentValues.get("c_id").toString()};

        // 通过DBHelper类获取一个读写的SQLiteDatabase对象
        SQLiteDatabase db=dbHelper.getWritableDatabase();
        // 修改数据
        // 参数1:tablename
        // 参数2:修改的值
        // 参数3:修改的条件(SQL where语句)
        // 参数4:表示whereClause语句中的表达式的占位符参数列表,这些字符串会替换where条件中?
        db.update(TABLE_NAME,contentValues,"c_id=?", a);

        // 释放连接
        db.close();
    }

}

​ 现在问题又来了,如何从图一过渡到图二?

  • 细心的小伙伴已经看到右上角的+号了!

res文件夹下创建menu文件夹,创建menu.xml:

<menu
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_menu"
        android:title="添加课程"
        android:icon="@android:drawable/ic_input_add"
        app:showAsAction="ifRoom">

    </item>
</menu>

MainActivity类中重写onCreateOptionsMenu方法:(Intent就是为了activity跳转)

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu, menu);


    MenuItem menuItem=menu.findItem(R.id.action_menu);

    menuItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem menuItem) {
            Intent intent = new Intent();
            intent.setClass(MainActivity.this, DialogModal.class);
            startActivity(intent);
            return true;
        }
    });

    return  super.onCreateOptionsMenu(menu);
}

这样+号就出现了,就可以连接图一图二了!

更新MainActivity,先看onCreate方法增加的调用。

public class MainActivity extends AppCompatActivity implements View.OnTouchListener {

    public final String DB_NAME = "classes_db.db";
    public final String TABLE_NAME = "classes_db";

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//        getSupportActionBar().hide();


        //拿到数据库对象,为了读取数据
        DBHelper dbHelper = new DBHelper(MainActivity.this, DB_NAME, null, 1);

        //动态渲染课程框
        framework();

        //将数据库课程渲染到课程框
        applyDraw(dbHelper);

    }

    public void applyDraw(DBHelper dbHelper) {

        //从数据库拿到课程数据保存在链表
        List<Classes> classes = query(dbHelper);

        for (Classes aClass : classes) {
            //第几节课
            int i = Integer.parseInt(aClass.getC_time().charAt(0) + "");

            //星期几
            int j = utils.getDay(aClass.getC_day());

            //获取此课程对应TextView的id
            TextView Class = findViewById((j - 1) * 5 + ((i - 1)/2 + 1));

            //判断如果课程星期==当前星期,如此课程信息和当前都是星期二就把背景颜色更换。
            Date date = new Date();
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("EEEE");
            if (aClass.getC_day().equals(simpleDateFormat.format(date).toString())) {
                Class.setBackgroundColor(Color.rgb(28, 217, 204));
            }

            //课程表信息映射出来
            Class.setText(aClass.getC_name());

            //触碰此课程框触发
            Class.setOnTouchListener(this);

        }

    }

    @SuppressLint("Range")
    public List<Classes> query(DBHelper dbHelper) {

        List<Classes> classes = new ArrayList<>();
        // 通过DBHelper类获取一个读写的SQLiteDatabase对象
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        // 参数1:table_name
        // 参数2:columns 要查询出来的列名。相当于 select  *** from table语句中的 ***部分
        // 参数3:selection 查询条件字句,在条件子句允许使用占位符“?”表示条件值
        // 参数4:selectionArgs :对应于 selection参数 占位符的值
        // 参数5:groupby 相当于 select *** from table where && group by ... 语句中 ... 的部分
        // 参数6:having 相当于 select *** from table where && group by ...having %%% 语句中 %%% 的部分
        // 参数7:orderBy :相当于 select  ***from ??  where&& group by ...having %%% order by@@语句中的@@ 部分,如: personid desc(按person 降序)
        Cursor cursor = db.query(TABLE_NAME, null, null, null, null, null, null);

        // 将游标移到开头
        cursor.moveToFirst();

        while (!cursor.isAfterLast()) { // 游标只要不是在最后一行之后,就一直循环

            if (!cursor.getString(cursor.getColumnIndex("c_day")).equals("0")) {
                Classes Class = new Classes();

                Class.setC_id(Integer.parseInt(cursor.getString(cursor.getColumnIndex("c_id"))));
                Class.setC_name(cursor.getString(cursor.getColumnIndex("c_name")));
                Class.setC_time(cursor.getString(cursor.getColumnIndex("c_time")));
                Class.setC_day(cursor.getString(cursor.getColumnIndex("c_day")));

                classes.add(Class);
            }

            // 将游标移到下一行
            cursor.moveToNext();

        }

        db.close();
        return classes;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu, menu);


        MenuItem menuItem=menu.findItem(R.id.action_menu);

        menuItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem menuItem) {
                Intent intent = new Intent();
                intent.setClass(MainActivity.this, DialogModal.class);
                startActivity(intent);
                return true;
            }
        });

        return  super.onCreateOptionsMenu(menu);
    }
}

至此,核心功能就完成了!

实现非功能需求

MainActivity类中重写此方法(注意我们已经在applyDraw方法最后一行中注册了课程框的onTouch监听):

    @SuppressLint("Range")
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {


        switch (motionEvent.getAction()){
            case MotionEvent.ACTION_DOWN: {
                TextView textView = (TextView) view;


                DBHelper dbHelper = new DBHelper(MainActivity.this, DB_NAME, null, 1);
                SQLiteDatabase db = dbHelper.getWritableDatabase();
                // 参数1:table_name
                // 参数2:columns 要查询出来的列名。相当于 select  *** from table语句中的 ***部分
                // 参数3:selection 查询条件字句,在条件子句允许使用占位符“?”表示条件值
                // 参数4:selectionArgs :对应于 selection参数 占位符的值
                // 参数5:groupby 相当于 select *** from table where && group by ... 语句中 ... 的部分
                // 参数6:having 相当于 select *** from table where && group by ...having %%% 语句中 %%% 的部分
                // 参数7:orderBy :相当于 select  ***from ??  where&& group by ...having %%% order by@@语句中的@@ 部分,如: personid desc(按person 降序)
//        Cursor cursor = db.query(TABLE_NAME, null, "c_id=?", new String[]{String.valueOf(textView.getId())}, null, null, null);
                Cursor cursor = db.query(TABLE_NAME, null, "c_id=?", new String[]{String.valueOf(textView.getId())}, null, null, null);

                // 将游标移到开头
                cursor.moveToFirst();
                if (!cursor.isAfterLast()) {
                    Classes Class = new Classes();
                    System.out.println(textView.getId());
                    System.out.println(cursor.getString(cursor.getColumnIndex("c_name")));

                    Intent intent = new Intent();
                    intent.putExtra("name", cursor.getString(cursor.getColumnIndex("c_name")));
                    intent.putExtra("time", cursor.getString(cursor.getColumnIndex("c_time")));
                    intent.putExtra("day", cursor.getString(cursor.getColumnIndex("c_day")));
                    intent.putExtra("teacher", cursor.getString(cursor.getColumnIndex("c_teacher")));
                    intent.setClass(MainActivity.this, Detail.class);
                    startActivity(intent);

                }
               return true;
            }

            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_CANCEL: {
                Intent intent = new Intent(this, MainActivity.class);
                startActivity(intent);
                break;
            }
        }

        return false;
    }

上所有代码:

  • 项目结构:

在这里插入图片描述

根据项目结构从上到下排序

Classes类

public class Classes {

    private int c_id;
    private String c_name;
    private String c_time;
    private String c_day;

    @Override
    public String toString() {
        return "Classes{" +
                "c_id=" + c_id +
                ", c_name='" + c_name + '\'' +
                ", c_time='" + c_time + '\'' +
                ", c_day='" + c_day + '\'' +
                '}';
    }

    public int getC_id() {
        return c_id;
    }

    public void setC_id(int c_id) {
        this.c_id = c_id;
    }

    public String getC_name() {
        return c_name;
    }

    public void setC_name(String c_name) {
        this.c_name = c_name;
    }

    public String getC_time() {
        return c_time;
    }

    public void setC_time(String c_time) {
        this.c_time = c_time;
    }

    public String getC_day() {
        return c_day;
    }

    public void setC_day(String c_day) {
        this.c_day = c_day;
    }
}

DBHelper类

public class DBHelper extends SQLiteOpenHelper {

    public SQLiteDatabase getWritableDatabase() {
        return super.getWritableDatabase();
    }

    public DBHelper(@Nullable Context context,
                    @Nullable String name,
                    @Nullable SQLiteDatabase.CursorFactory factory,
                    int version) {

        super(context, name, factory, version);

    }

    @Override
    public void onCreate(SQLiteDatabase sqLiteDatabase) {
        sqLiteDatabase.execSQL("create table classes_db" +
                "(c_id Integer not null primary key autoincrement," +
                " c_name varchar(50) not null," +
                " c_time varchar(50) not null," +
                " c_day varchar(50) not null," +
                " c_teacher varchar(50) not null)");

        // 创建ContentValue设置参数
        ContentValues contentValues = new ContentValues();

        //课程名字
        contentValues.put("c_name", "0");
        //第几节课
        contentValues.put("c_time", "0");
        //星期几
        contentValues.put("c_day", "0");
        //任课教师
        contentValues.put("c_teacher", "0");

        //插入id 1-36 个课程数据,以便添加课程
        for (int i = 1; i < 37; i++) {
            contentValues.put("c_id", i);
            sqLiteDatabase.insert("classes_db", "", contentValues);
        }

    }

    @Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {

    }



}

Detail类

public class Detail extends Activity {

    TextView time;
    TextView clsNum;
    TextView sub;
    TextView teacher;
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_press);

        Intent intent = getIntent();

        sub = findViewById(R.id.sub);
        sub.setText(intent.getStringExtra("name"));

        time = findViewById(R.id.time);
        time.setText(intent.getStringExtra("day"));

        clsNum = findViewById(R.id.clsNum);
        clsNum.setText(intent.getStringExtra("time"));

        teacher = findViewById(R.id.teacher);
        teacher.setText(intent.getStringExtra("teacher"));


        setFinishOnTouchOutside(true);


    }

}

DialogModal类

public class DialogModal extends Activity {
    Button close_activity;
    Button save_activity;
    Spinner selected_time;
    Spinner selected_day;
    EditText subject;
    EditText teacher;
    //数据库名,表名
    public final String DB_NAME = "classes_db.db";
    public final String TABLE_NAME = "classes_db";
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_set);

        //当点击dialog之外完成此activity
        setFinishOnTouchOutside (true);

        //关闭按钮操作
        close_activity=(Button) findViewById(R.id.close_activity);
        close_activity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                DialogModal.this.finish();
            }
        });

        //保存按钮操作
        save_activity = findViewById(R.id.save_activity);
        save_activity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent();

                selected_day = findViewById(R.id.selected_day);
                String day = selected_day.getSelectedItem().toString();

                if (day.equals("--请选择--")) {
                    save_activity.setError("");
                    return;
                }
                selected_time = findViewById(R.id.selected_time);
                String time = selected_time.getSelectedItem().toString();
                if (time.equals("--请选择--")) {
                    save_activity.setError("");
                    return;
                }

                subject = findViewById(R.id.subject);
                String text = subject.getText().toString();
                if ("".equals(text)) {
                    save_activity.setError("");
                    return;
                }

                teacher = findViewById(R.id.teacher);
                String teacher = subject.getText().toString();
                if ("".equals(teacher)) {
                    save_activity.setError("");
                    return;
                }

                //创建一个数据库对象
                DBHelper dbHelper = new DBHelper(DialogModal.this, DB_NAME, null, 1);

                //把数据存在contentValues中
                ContentValues contentValues = new ContentValues();
                //combineId()方法目的是通过星期几和第几节课算出对应该课程id
                contentValues.put("c_id", combineId(day, time));
                contentValues.put("c_name", text);
                contentValues.put("c_time", time);
                contentValues.put("c_day", day);
                contentValues.put("c_teacher", teacher);

                //更新数据库记录
                update(dbHelper, contentValues);

                //清空栈内所有activity
                intent.setFlags(intent.FLAG_ACTIVITY_CLEAR_TASK);

                //启动MainActivity
                intent.setClass(DialogModal.this, MainActivity.class);
                startActivity(intent);
            }
        });
    }

    public String combineId(String day, String time) {

        //星期几转换成int类型
        int day1 = utils.getDay(day);

        //如1-2节课只取1
        int time1 = Integer.parseInt(time.substring(0, 1));

        return String.valueOf((day1 - 1) * 5 + ((time1 - 1)/2 + 1));
    }

    public void update(DBHelper dbHelper, ContentValues contentValues){

        String []a = {contentValues.get("c_id").toString()};

        // 通过DBHelper类获取一个读写的SQLiteDatabase对象
        SQLiteDatabase db=dbHelper.getWritableDatabase();
        // 修改数据
        // 参数1:tablename
        // 参数2:修改的值
        // 参数3:修改的条件(SQL where语句)
        // 参数4:表示whereClause语句中的表达式的占位符参数列表,这些字符串会替换where条件中?
        db.update(TABLE_NAME,contentValues,"c_id=?", a);

        // 释放连接
        db.close();
    }

}

MainActivity类:

public class MainActivity extends AppCompatActivity implements View.OnTouchListener {

    public final String DB_NAME = "classes_db.db";
    public final String TABLE_NAME = "classes_db";

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//        getSupportActionBar().hide();


        //拿到数据库对象,为了读取数据
        DBHelper dbHelper = new DBHelper(MainActivity.this, DB_NAME, null, 1);

        //动态渲染课程框
        framework();

        //将数据库课程渲染到课程框
        applyDraw(dbHelper);

    }

    public GridLayout LayoutColumn(int i) {

        GridLayout gridLayout = findViewById(R.id.d1);

        switch (i) {
            case 1: {
                gridLayout = findViewById(R.id.d1);
                break;
            }
            case 2: {
                gridLayout = findViewById(R.id.d2);
                break;
            }
            case 3: {
                gridLayout = findViewById(R.id.d3);
                break;
            }
            case 4: {
                gridLayout = findViewById(R.id.d4);
                break;
            }
            case 5: {
                gridLayout = findViewById(R.id.d5);
                break;
            }
            case 6: {
                gridLayout = findViewById(R.id.d6);
                break;
            }
            case 7: {
                gridLayout = findViewById(R.id.d7);
                break;
            }
        }
        return gridLayout;
    }

    public void framework() {

        GridLayout gridLayout;
        int id = 1;

        for (int i = 1; i < 8; i++) {

            gridLayout = LayoutColumn(i);

            for (int j = 1; j < 10; j +=2) {
                TextView textView1 = new TextView(this);

                textView1.setId(id++);
                textView1.setText("");
                textView1.setMaxLines(5);
                textView1.setEllipsize(TextUtils.TruncateAt.END);
                textView1.setBackgroundColor(Color.parseColor("#F0FFFF"));
                textView1.setGravity(Gravity.CENTER);


                GridLayout.LayoutParams params1 = new GridLayout.LayoutParams();
                params1.rowSpec = GridLayout.spec( j, 2,1);
                params1.setMargins(5,10,5,10);
                params1.width = GridLayout.LayoutParams.MATCH_PARENT;
                params1.height = 0;

                gridLayout.addView(textView1, params1);
            }

        }

    }

    public void applyDraw(DBHelper dbHelper) {

        //从数据库拿到课程数据保存在链表
        List<Classes> classes = query(dbHelper);

        for (Classes aClass : classes) {
            //第几节课
            int i = Integer.parseInt(aClass.getC_time().charAt(0) + "");

            //星期几
            int j = utils.getDay(aClass.getC_day());

            //获取此课程对应TextView的id
            TextView Class = findViewById((j - 1) * 5 + ((i - 1)/2 + 1));

            //判断如果课程星期==当前星期,如此课程信息和当前都是星期二就把背景颜色更换。
            Date date = new Date();
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("EEEE");
            if (aClass.getC_day().equals(simpleDateFormat.format(date).toString())) {
                Class.setBackgroundColor(Color.rgb(28, 217, 204));
            }

            //课程表信息映射出来
            Class.setText(aClass.getC_name());

            //触碰此课程框触发
            Class.setOnTouchListener(this);

        }

    }

    @SuppressLint("Range")
    public List<Classes> query(DBHelper dbHelper) {

        List<Classes> classes = new ArrayList<>();
        // 通过DBHelper类获取一个读写的SQLiteDatabase对象
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        // 参数1:table_name
        // 参数2:columns 要查询出来的列名。相当于 select  *** from table语句中的 ***部分
        // 参数3:selection 查询条件字句,在条件子句允许使用占位符“?”表示条件值
        // 参数4:selectionArgs :对应于 selection参数 占位符的值
        // 参数5:groupby 相当于 select *** from table where && group by ... 语句中 ... 的部分
        // 参数6:having 相当于 select *** from table where && group by ...having %%% 语句中 %%% 的部分
        // 参数7:orderBy :相当于 select  ***from ??  where&& group by ...having %%% order by@@语句中的@@ 部分,如: personid desc(按person 降序)
        Cursor cursor = db.query(TABLE_NAME, null, null, null, null, null, null);

        // 将游标移到开头
        cursor.moveToFirst();

        while (!cursor.isAfterLast()) { // 游标只要不是在最后一行之后,就一直循环

            if (!cursor.getString(cursor.getColumnIndex("c_day")).equals("0")) {
                Classes Class = new Classes();

                Class.setC_id(Integer.parseInt(cursor.getString(cursor.getColumnIndex("c_id"))));
                Class.setC_name(cursor.getString(cursor.getColumnIndex("c_name")));
                Class.setC_time(cursor.getString(cursor.getColumnIndex("c_time")));
                Class.setC_day(cursor.getString(cursor.getColumnIndex("c_day")));

                classes.add(Class);
            }

            // 将游标移到下一行
            cursor.moveToNext();

        }

        db.close();
        return classes;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu, menu);


        MenuItem menuItem=menu.findItem(R.id.action_menu);

        menuItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem menuItem) {
                Intent intent = new Intent();
                intent.setClass(MainActivity.this, DialogModal.class);
                startActivity(intent);
                return true;
            }
        });

        return  super.onCreateOptionsMenu(menu);
    }

    @SuppressLint("Range")
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {


        switch (motionEvent.getAction()){
            case MotionEvent.ACTION_DOWN: {
                TextView textView = (TextView) view;


                DBHelper dbHelper = new DBHelper(MainActivity.this, DB_NAME, null, 1);
                SQLiteDatabase db = dbHelper.getWritableDatabase();
                // 参数1:table_name
                // 参数2:columns 要查询出来的列名。相当于 select  *** from table语句中的 ***部分
                // 参数3:selection 查询条件字句,在条件子句允许使用占位符“?”表示条件值
                // 参数4:selectionArgs :对应于 selection参数 占位符的值
                // 参数5:groupby 相当于 select *** from table where && group by ... 语句中 ... 的部分
                // 参数6:having 相当于 select *** from table where && group by ...having %%% 语句中 %%% 的部分
                // 参数7:orderBy :相当于 select  ***from ??  where&& group by ...having %%% order by@@语句中的@@ 部分,如: personid desc(按person 降序)
//        Cursor cursor = db.query(TABLE_NAME, null, "c_id=?", new String[]{String.valueOf(textView.getId())}, null, null, null);
                Cursor cursor = db.query(TABLE_NAME, null, "c_id=?", new String[]{String.valueOf(textView.getId())}, null, null, null);

                // 将游标移到开头
                cursor.moveToFirst();
                if (!cursor.isAfterLast()) {
                    Classes Class = new Classes();
                    System.out.println(textView.getId());
                    System.out.println(cursor.getString(cursor.getColumnIndex("c_name")));

                    Intent intent = new Intent();
                    intent.putExtra("name", cursor.getString(cursor.getColumnIndex("c_name")));
                    intent.putExtra("time", cursor.getString(cursor.getColumnIndex("c_time")));
                    intent.putExtra("day", cursor.getString(cursor.getColumnIndex("c_day")));
                    intent.putExtra("teacher", cursor.getString(cursor.getColumnIndex("c_teacher")));
                    intent.setClass(MainActivity.this, Detail.class);
                    startActivity(intent);

                }
               return true;
            }

            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_CANCEL: {
                Intent intent = new Intent(this, MainActivity.class);
                startActivity(intent);
                break;
            }
        }

        return false;
    }

}

utils类:

public class utils {

    public static int getDay(String day) {
        int j = 0;
        switch (day) {
            case "星期一":{
                j = 1;
                break;
            }
            case "星期二":{
                j = 2;
                break;
            }
            case "星期三":{
                j = 3;
                break;
            }
            case "星期四":{
                j = 4;
                break;
            }
            case "星期五":{
                j = 5;
                break;
            }
            case "星期六":{
                j = 6;
                break;
            }
            case "星期日":{
                j = 7;
                break;
            }
        }
        return j;
    }

}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <GridLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="0.5"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"
            android:text=""
            android:gravity="center"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="1"
            android:gravity="center"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="2"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="3"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="4"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="5"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="6"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="7"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="8"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="9"
            android:gravity="center"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="1"
            android:text="10"
            android:gravity="center"/>



    </GridLayout>

    <GridLayout
        android:id="@+id/d1"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"
            android:text="周一"
            android:textSize="20sp"
            android:autoSizeMaxTextSize="30sp"
            android:autoSizeMinTextSize="5sp"
            android:autoSizeStepGranularity="1sp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d2"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"

            android:text="周二"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d3"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"

            android:text="周三"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d4"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"
            android:text="周四"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d5"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"
            android:text="周五"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d6"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#FFFAFA"
        android:rowCount="11"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"
            android:text="周六"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>

    <GridLayout
        android:id="@+id/d7"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:rowCount="11"
        android:background="#FFFAFA"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_rowWeight="0.25"

            android:text="周日"
            android:textSize="20dp"
            android:gravity="center"/>


    </GridLayout>
</LinearLayout>

返回

activity_press.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
style="@style/MyModelSetting"
android:layout_width="300dp"
android:layout_height="450dp"
android:background="#fff"
android:orientation="vertical"
tools:context=".DialogModal">
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="课程详情"
    android:textSize="40dp"
    android:layout_gravity="center"
    android:textColor="@color/black"/>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:layout_margin="10dp">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="时间:"
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>

    <TextView
        android:id="@+id/time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>





</LinearLayout>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:orientation="horizontal">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="节课:"
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>

    <TextView
        android:id="@+id/clsNum"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>




</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:orientation="horizontal">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="科目:"
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>

    <TextView
        android:id="@+id/sub"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>



</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:orientation="horizontal">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="任课教师:"
        android:textSize="30dp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>

    <TextView
        android:id="@+id/teacher"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="30sp"
        android:autoSizeMaxTextSize="30sp"
        android:autoSizeMinTextSize="5sp"
        android:autoSizeStepGranularity="1sp"
        android:textColor="@color/cardview_dark_background"
        android:layout_margin="10dp"/>



</LinearLayout>


</LinearLayout>

activity_set.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    style="@style/MyModelSetting"
    android:layout_width="300dp"
    android:layout_height="450dp"
    android:background="#fff"
    android:orientation="vertical"
    tools:context=".DialogModal">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="添加课程"
        android:textSize="40dp"
        android:layout_gravity="center"
        android:textColor="@color/black"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_margin="10dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="时间:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <Spinner
            android:id="@+id/selected_day"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/day">
        </Spinner>



    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="节课:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <Spinner
            android:id="@+id/selected_time"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/time">
        </Spinner>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="科目:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <EditText
            android:id="@+id/subject"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="任课教师:"
            android:textSize="30dp"
            android:textColor="@color/cardview_dark_background"
            android:layout_margin="10dp"/>

        <EditText
            android:id="@+id/teacher"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>



    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="bottom">
        <Button
            android:id="@+id/close_activity"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="取消" />
        <Button
            android:id="@+id/save_activity"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="保存" />
    </LinearLayout>



</LinearLayout>

menu.xml

<menu
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_menu"
        android:title="添加课程"
        android:icon="@android:drawable/ic_input_add"
        app:showAsAction="ifRoom">

    </item>
</menu>

strings.xml:

<resources>
    <string name="app_name">schedule</string>

    <string-array name="day">
        <item>
            --请选择--
        </item>
        <item>
            星期一
        </item>
        <item>
            星期二
        </item>
        <item>
            星期三
        </item>
        <item>
            星期四
        </item>
        <item>
            星期五
        </item>
        <item>
            星期六
        </item>
        <item>
            星期日
        </item>
    </string-array>

    <string-array name="time">
        <item>
            --请选择--
        </item>
        <item>
            1-2节课
        </item>
        <item>
            3-4节课
        </item>
        <item>
            5-6节课
        </item>
        <item>
            7-8节课
        </item>
        <item>
            9-10节课
        </item>
    </string-array>
</resources>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="dayStyle">
        <item name="android:layout_width">48dp</item>
        <item name="android:layout_height">30dp</item>
        <item name="android:layout_gravity">center</item>
        <item name="android:gravity">center</item>
        <item name="android:background">#e9e9e9</item>
        <item name="android:textSize">20dp</item>
    </style>

    <style id="c" name="numb">
        <item name="android:layout_width">20dp</item>
        <item name="android:layout_height">70dp</item>
        <item name="android:gravity">center</item>
        <item name="android:layout_gravity">center</item>
        <item name="android:textSize">15dp</item>
        <item name="android:background">#e9e9e9</item>
    </style>

    <dimen name="text_width">40dp</dimen>
    <dimen name="text_height">130dp</dimen>
    <dimen name="text_size">10dp</dimen>
    <style name="Class">
        <item name="android:layout_margin">5dp</item>
        <item name="android:layout_width">42dp</item>
        <item name="android:layout_height">130dp</item>
        <item name="android:layout_gravity">center</item>
        <item name="android:gravity">center</item>
        <item name="android:layout_rowSpan">2</item>
        <item name="android:textSize">12dp</item>
    </style>

    <style name="MyModelSetting" parent="Theme.AppCompat">
        <!--背景色,此处的背景色请一定要设置为透明度背景色-->
        <item name="android:windowBackground">@color/transparent</item>
        <!--window Is Translucent 窗口是半透明的-->
        <item name="android:windowIsTranslucent">true</item>
        <!--window No Title窗口无标题-->
        <item name="android:windowNoTitle">true</item>
        <!--弹出动画-->
        <item name="android:windowAnimationStyle">@null</item>
    </style>
</resources>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.schedule">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Schedule">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTask"
            android:screenOrientation="sensor">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".DialogModal"
            android:theme="@android:style/Theme.Dialog"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>
        </activity>
        <activity android:name=".Detail"
            android:theme="@android:style/Theme.Dialog"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>
        </activity>
    </application>

</manifest>
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