不规则图形按钮非透明区的点击
/** * 不规则"图形按钮控件" * */public class TrapezoidImageButton extends ImageButton { public TrapezoidImageButton(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public TrapezoidImageButton(Context context, AttributeSet attrs) { super(context, attrs); } public TrapezoidImageButton(Context context) { super(context); } @Override public boolean onTouchEvent(MotionEvent event) { if (isTouchPointInView(event.getX(),event.getY())|| event.getAction() != MotionEvent.ACTION_DOWN){ return super.onTouchEvent(event); }else{ return false; } } protected boolean isTouchPointInView(float localX, float localY){ Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); draw(canvas); int x = (int)localX; int y = (int)localY; if (x < 0 || x >= getWidth()) return false; if (y < 0 || y >= getHeight()) return false; int pixel = bitmap.getPixel(x,y); if ((pixel&0xff000000) != 0){ //点在非透明区 return true; }else{ return false; } }}