CirleDrawImage圆角图片

/** *  */package com.example.cirledrawimage;import android.graphics.Bitmap;import android.graphics.BitmapShader;import android.graphics.Canvas;import android.graphics.ColorFilter;import android.graphics.Paint;import android.graphics.PixelFormat;import android.graphics.Shader.TileMode;import android.graphics.drawable.Drawable;public class CirleDrawImage extends Drawable {private Paint mPaint;private int mWitdh;private  Bitmap  mBimap;public CirleDrawImage(Bitmap bitmap){this.mBimap=bitmap;BitmapShader bitmapShader=new BitmapShader(mBimap, TileMode.CLAMP, TileMode.CLAMP);mPaint=new Paint();mPaint.setAntiAlias(true);mPaint.setShader(bitmapShader);mWitdh=Math.min(mBimap.getWidth(), mBimap.getHeight());}@Overridepublic void draw(Canvas canvas) {canvas.drawCircle(mWitdh/2, mWitdh/2,mWitdh/2, mPaint);}@Overridepublic void setAlpha(int alpha) {mPaint.setAlpha(alpha);}@Overridepublic void setColorFilter(ColorFilter cf) {mPaint.setColorFilter(cf);}@Overridepublic int getOpacity() {return  PixelFormat.TRANSLUCENT;}@Overridepublic int getIntrinsicHeight() {return mWitdh;}@Overridepublic int getIntrinsicWidth() {return mWitdh;}}

/** *  */package com.example.cirledrawimage;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.widget.ImageView;public class MainActivity extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ImageView imageShow=(ImageView)findViewById(R.id.img_shows);Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.ss);imageShow.setImageDrawable(new CirleDrawImage(bitmap));}}

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