Android 圆角图形和圆角头像的完美实现

来源：互联网发布：c语言简单程序实例编辑：程序博客网时间：2024/05/29 16:11
/** * 圆角图片控件 */public class RoundImageView extends ImageView {public RoundImageView(Context context) {super(context);init();}public RoundImageView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);init();}public RoundImageView(Context context, AttributeSet attrs) {super(context, attrs);init();} private final RectF roundRect = new RectF(); private float rect_adius = 10; 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) {           try {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();} catch (Exception e) {e.printStackTrace();}   }}
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