效果图：

上面的是原生Textview，第一行末尾数字整体换行了，

下面是自定义Textview，第一行末尾数字分别在第一行和第二行展示

布局中  MyTextview记得换成自己包名下的

android:layout_margin="25dp"

android:id="@+id/test_tv"

android:lineSpacingExtra="8dp"

android:textSize="15sp"

android:textColor="#444444"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="文字文字文字文字文字文字文字文字文字1234567890字文字文字文字文字1234567890"

/>

android:layout_margin="25dp"

android:id="@+id/test_mytv"

android:lineSpacingExtra="8dp"

android:textSize="15sp"

android:textColor="#444444"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="文字文字文字文字文字文字文字文字文字1234567890字文字文字文字文字1234567890"

/>

自定义Textview:  MyTextView类

public class MyTextView extends View {

//内容填充画笔

private Paint contentPaint;

//标准的字体颜色

private String contentNormalColor = "#737373";

//有焦点的字体颜色

private String contentFocuedColor = "#333333";

//控件宽度

private int viewWidth = 0;

//控件高度

private int viewHeight = 0;

//标准的字的样式

public static final int TEXT_TYPE_NORMAL = 1;

//控件获取焦点的时候进行的处理

public static final int TEXT_TYPE_FOCUED = 2;

//默认是标准的样式

private int currentTextType = TEXT_TYPE_NORMAL;

//默认当前的颜色

private String textColor = "#444444";

//字体大小

private int textSize = 60;

//内容

private String mText = "测试的文字信息";

//最小view高度

private float minHeight = 0;

//最小view宽度

private float minWidth = 0;

//行间距

private float lineSpace;

//最大行数

private int maxLines = 0;

//文字测量工具

private Paint.FontMetricsInt textFm;

///真实的行数

private int realLines;

//当前显示的行数

private int line;

//在末尾是否显示省略号

private boolean showEllipsise;

//文字显示区的宽度

private int textWidth;

//单行文字的高度

private int signleLineHeight;

private int mPaddingLeft,mPaddingRight,mPaddingTop,mPaddingBottom;

/**

* 省略号

**/

private String ellipsis = "...";

public MyTextView(Context context) {

this(context,null);

}

public MyTextView(Context context, AttributeSet attrs) {

this(context, attrs,0);

}

public MyTextView(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

initAttr(context,attrs);

init();

}

private boolean isFristload;

/**

* 初始化

*/

private void init() {

contentPaint = new Paint();

contentPaint.setTextSize(textSize);

contentPaint.setAntiAlias(true);

contentPaint.setStrokeWidth(2);

contentPaint.setColor(Color.parseColor(textColor));

contentPaint.setTextAlign(Paint.Align.LEFT);

textFm = contentPaint.getFontMetricsInt();

signleLineHeight=Math.abs(textFm.top-textFm.bottom);

}

/**

* 初始化属性

* @param context

* @param attrs

*/

private void initAttr(Context context,AttributeSet attrs) {

TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyTextView);

mPaddingLeft = typedArray.getDimensionPixelSize(R.styleable.MyTextView_paddingLeft, 0);

mPaddingRight = typedArray.getDimensionPixelSize(R.styleable.MyTextView_paddingRight, 0);

mPaddingTop = typedArray.getDimensionPixelSize(R.styleable.MyTextView_paddingTop, 0);

mPaddingBottom = typedArray.getDimensionPixelSize(R.styleable.MyTextView_paddingBottom, 0);

mText = typedArray.getString(R.styleable.MyTextView_text);

textColor = typedArray.getString(R.styleable.MyTextView_textColor);

if(textColor==null){

textColor="#444444";

}

// textSize = typedArray.getDimensionPixelSize(R.styleable.MyTextView_textSize, 60);

textSize = typedArray.getDimensionPixelSize(R.styleable.MyTextView_textSize, DensityUtil.sp2px(context,15));

lineSpace = typedArray.getInteger(R.styleable.MyTextView_lineSpacing, 20);

typedArray.recycle();

}

public void setText(String ss){

this.mText=ss;

invalidate();

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

super.onMeasure(widthMeasureSpec,heightMeasureSpec);

viewWidth=getMeasuredWidth();

textWidth=viewWidth-mPaddingLeft-mPaddingRight;

viewHeight= (int) getViewHeight();

setMeasuredDimension(viewWidth, viewHeight);

}

private float getViewHeight() {

char[] textChars=mText.toCharArray();

float ww=0.0f;

int count=0;

StringBuilder sb=new StringBuilder();

for(int i=0;i

float v = contentPaint.measureText(textChars[i] + "");

if(ww+v<=textWidth){

sb.append(textChars[i]);

ww+=v;

}

else{

count++;

sb=new StringBuilder();

ww=0.0f;

ww+=v;

sb.append(textChars[i]);

}

}

if(sb.toString().length()!=0){

count++;

}

return count*signleLineHeight+lineSpace*(count-1)+mPaddingBottom+mPaddingTop;

}

@Override

protected void onDraw(Canvas canvas) {

drawText(canvas);

}

/**

* 循环遍历画文字

* @param canvas

*/

private void drawText(Canvas canvas) {

char[] textChars=mText.toCharArray();

float ww=0.0f;

float startL=0.0f;

float startT=0.0f;

startL+=mPaddingLeft;

startT+=mPaddingTop+signleLineHeight/2+ (textFm.bottom-textFm.top)/2 - textFm.bottom;

StringBuilder sb=new StringBuilder();

for(int i=0;i

float v = contentPaint.measureText(textChars[i] + "");

if(ww+v<=textWidth){

sb.append(textChars[i]);

ww+=v;

}

else{

canvas.drawText(sb.toString(),startL,startT,contentPaint);

startT+=signleLineHeight+lineSpace;

sb=new StringBuilder();

ww=0.0f;

ww+=v;

sb.append(textChars[i]);

}

}

if(sb.toString().length()>0){

canvas.drawText(sb.toString(),startL,startT,contentPaint);

}

}

}

在 res-values下attr.xml中添加属性

Activity中

MyTextView testMyTv = findViewById(R.id.test_mytv);

String str = "文字文字文字文字文字文字文字文字文字1234567890字文字文字文字文字1234567890";

testMyTv.setText(str);