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[操作系统]Picasso设置圆角

 

package liu.roundimagedemo.view;import android.graphics.Bitmap;import android.graphics.BitmapShader;import android.graphics.Canvas;import android.graphics.Paint;import com.squareup.picasso.Transformation;/** * Created by 刘楠 on 2016/8/31 0031.23:09 */public class CircleTransform implements Transformation {  @Override  public Bitmap transform(Bitmap source) {    /**     * 求出宽和高的哪个小     */    int size = Math.min(source.getWidth(), source.getHeight());    /**     * 求中心点     */    int x = (source.getWidth() - size) / 2;    int y = (source.getHeight() - size) / 2;    /**     * 生成BitMap     */    Bitmap squaredBitmap = Bitmap.createBitmap(source, x, y, size, size);    if (squaredBitmap != source) {      //释放      source.recycle();    }    /**     * 建立新的Bitmap     */    Bitmap bitmap = Bitmap.createBitmap(size, size, source.getConfig());    /**     * 画布画笔     */    Canvas canvas = new Canvas(bitmap);    Paint paint = new Paint();        BitmapShader shader = new BitmapShader(squaredBitmap,        BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);    paint.setShader(shader);    paint.setAntiAlias(true);    float r = size / 2f;    /**     * 画圆     */    canvas.drawCircle(r, r, r, paint);    squaredBitmap.recycle();    return bitmap;  }  @Override  public String key() {    return "circle";  }}

 

 

Picasso.with(this).load("http://img1.3lian.com/2015/w7/68/d/85.jpg").transform(new CircleTransform())        .into(mNetImageView);