android多级下拉菜单框架,本文实例为大家分享了Android仿美团下拉菜单的实现代码,分类进行选择,供大家参考,具体内容如下效果图操作平台AS2.0第三方框架:butterkn...
本文实例为大家分享了Android仿美团下拉菜单的实现代码,分类进行选择,供大家参考,具体内容如下效果图操作平台AS2.0第三方框架:butterknifebuild.gradledependencies {compile fileTree(dir: 'libs', include: ['*.jar'])testCompile 'junit:junit:4.12'compile 'com.andr
本文实例为大家分享了Android仿美团下拉菜单的实现代码,分类进行选择,供大家参考,具体内容如下
效果图
操作平台
AS2.0
第三方框架:butterknife
build.gradle
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.jakewharton:butterknife:7.0.1'
}
实现代码
1、实现逻辑:主要利用Spinner与BaseAdapter来实现菜单下拉。具体美观效果要靠各个控件的调整,以及必要的分割线添加。
2、核心代码
适配器的item代码:item_main.xml
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
android:id="@+id/item_main_tv"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="16dp"
android:background="#fff"
android:gravity="center_vertical"
android:singleLine="true"
android:text="测试文字"
android:textSize="15dp"
/>
android:id="@+id/main_tv_line"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:background="#edecec"/>
主页面布局文件activity_main.xml
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
android:layout_width="match_parent"
android:layout_height="40dp"
>
android:id="@+id/main_sp1"
style="@style/style_spinner">
style="@style/style_mian_verline"/>
android:id="@+id/main_sp2"
style="@style/style_spinner"
>
style="@style/style_mian_verline"/>
android:id="@+id/main_sp3"
style="@style/style_spinner"
>
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#dcdcdc"
/>
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff">
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="我是分类下面的正文内容"/>
style文件
0dp
40dp
1
40dp
1000dp
1dp
25dp
#dcdcdc
center_vertical
MainActivity与适配器写在了一起,便于操作
public class MainActivity extends AppCompatActivity {
@Bind(R.id.main_sp1)
Spinner mMainSp1;
@Bind(R.id.main_sp2)
Spinner mMainSp2;
@Bind(R.id.main_sp3)
Spinner mMainSp3;
private List data_list1;
private List data_list2;
private List data_list3;
private BaseAdapter arr_adapter;//适配器
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
initData();
initAdapter();
setListener();
}
//设置监听事件,将来商家列表的排序都在这里面处理
private void setListener() {
mMainSp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "点击了"+data_list1.get(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView> parent) {
}
});
mMainSp2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "点击了"+data_list2.get(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView> parent) {
}
});
mMainSp3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "点击了"+data_list3.get(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView> parent) {
}
});
}
private void initAdapter() {
//适配器
arr_adapter = new MyAdapter(data_list1);
mMainSp1.setAdapter(arr_adapter);
//适配器
arr_adapter = new MyAdapter(data_list2);
mMainSp2.setAdapter(arr_adapter);
//适配器
arr_adapter = new MyAdapter(data_list3);
mMainSp3.setAdapter(arr_adapter);
}
//设置数据来源,这个要在网络获取。由于数据不会太多,不再考虑性能优化问题
private void initData() {
//数据
data_list1 = new ArrayList<>();
data_list1.add("全部分类");
data_list1.add("零食");
data_list1.add("水果");
data_list1.add("洗衣");
data_list1.add("洗车");
data_list1.add("茶饮");
//数据
data_list2 = new ArrayList<>();
data_list2.add("商圈");
data_list2.add("郑州航院");
data_list2.add("华北水利水电大学");
data_list2.add("河南中医大学");
data_list2.add("河南财经大学");
//数据
data_list3 = new ArrayList<>();
data_list3.add("智能排序");
data_list3.add("好评优先");
data_list3.add("离我最近");
data_list3.add("价格最低");
}
//适配器
class MyAdapter extends BaseAdapter {
private LayoutInflater mLayoutInflater;
private List mDataList;
MyAdapter(List dataList) {
this.mDataList = dataList;
mLayoutInflater = LayoutInflater.from(MainActivity.this);
}
@Override
public int getCount() {
return mDataList.size();
}
@Override
public Object getItem(int position) {
return mDataList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
//数据不太多,没有使用ViewHolder进行处理。
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = View.inflate(MainActivity.this, R.layout.item_main, null);
TextView textView = (TextView) convertView.findViewById(R.id.item_main_tv);
textView.setText(mDataList.get(position));
return convertView;
}
}
}
以上就是本文的全部内容,希望对大家学习Android软件编程有所帮助。
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