Android圆角图片封装类，,import andro

Android圆角图片封装类，,import andro

import android.content.Context;  import android.graphics.Canvas;  import android.graphics.Color;  import android.graphics.Paint;  import android.graphics.PorterDuff;  import android.graphics.PorterDuffXfermode;  import android.graphics.RectF;  import android.util.AttributeSet;  import android.widget.ImageView;  /**  * 圆角ImageView  *   * @author skg  *   */  public class RoundImageView extends ImageView {      public RoundImageView(Context context, AttributeSet attrs) {          super(context, attrs);          init();      }      public RoundImageView(Context context) {          super(context);          init();      }      private final RectF roundRect = new RectF();      private float rect_adius = 6;      private final Paint maskPaint = new Paint();      private final Paint zonePaint = new Paint();      private void init() {          maskPaint.setAntiAlias(true);          maskPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));          //          zonePaint.setAntiAlias(true);          zonePaint.setColor(Color.WHITE);          //          float density = getResources().getDisplayMetrics().density;          rect_adius = rect_adius * density;      }      public void setRectAdius(float adius) {          rect_adius = adius;          invalidate();      }      @Override      protected void onLayout(boolean changed, int left, int top, int right,              int bottom) {          super.onLayout(changed, left, top, right, bottom);          int w = getWidth();          int h = getHeight();          roundRect.set(0, 0, w, h);      }      @Override      public void draw(Canvas canvas) {          canvas.saveLayer(roundRect, zonePaint, Canvas.ALL_SAVE_FLAG);          canvas.drawRoundRect(roundRect, rect_adius, rect_adius, zonePaint);          //          canvas.saveLayer(roundRect, maskPaint, Canvas.ALL_SAVE_FLAG);          super.draw(canvas);          canvas.restore();      }  }