package com.example.zhangyu.myview.widget;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Picture;import android.graphics.Rect;import android.graphics.RectF;import android.os.Build;import android.support.annotation.Nullable;import android.support.annotation.RequiresApi;import android.util.AttributeSet;import android.view.View;import com.example.zhangyu.myview.R;public class TouchPullView extends View { //圆的半径 private float mCircleRadius; private Paint paint; private Rect rect=new Rect(); private int count; public TouchPullView(Context context) { super(context); init(); } public TouchPullView(Context context, @Nullable AttributeSet attrs) { super(context, attrs); init(); } public TouchPullView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public TouchPullView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); init(); } /** * 初始化 */ private void init() { paint = new Paint(Paint.ANTI_ALIAS_FLAG); //设置抗锯齿 paint.setAntiAlias(true); //设置防抖动 paint.setDither(true); //设置填充方式 paint.setStyle(Paint.Style.FILL_AND_STROKE); //View的点击事件 setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { count++; invalidate();//重新绘制 } }); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); //设置方形画笔，背景。 paint.setColor(Color.YELLOW); //先绘制底板 canvas.drawRect(0, 0, getWidth(), getHeight(), paint); float x = getWidth() / 2; float y = getHeight() / 2; float offset = getWidth()/6; //绘制圆形 paint.setColor(Color.GRAY); mCircleRadius = offset*1.41f; canvas.drawCircle(x, y, mCircleRadius, paint); //绘制图片 Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.pic1); if (bitmap != null) { canvas.drawBitmap(bitmap,null,new RectF(x-offset,y-offset,x+offset,y+offset),paint); } //绘制文字外层的文字，边框 String s = String.valueOf(count); paint.setStrokeWidth(10); paint.setColor(Color.RED); paint.setTextSize(100); paint.getTextBounds(s,0,s.length(),rect); float textWidth = rect.width(); float textHeight = rect.height(); x = getWidth()/2-textWidth/2; y = getHeight() / 2+textHeight/2; canvas.drawText(s, x, y, paint); //绘制文字 paint.setColor(Color.BLUE); paint.setStrokeWidth(0); canvas.drawText(s, x, y, paint); }} 
