如果我的代码是这样的,我将如何删除画布上绘制的图像?我在哪里将删除过程放在这里?我试过使用canvas.drawColor(Color.BLACK);
,但它不工作。如何删除Canvas中绘制的图像?
@Override
protected void onDraw(Canvas canvas) {
canvas.drawPath(path, paint);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float eventX = event.getX();
float eventY = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
path.moveTo(eventX, eventY);
return true;
case MotionEvent.ACTION_MOVE:
path.lineTo(eventX, eventY);
break;
case MotionEvent.ACTION_UP:
// nothing to do
break;
default:
return false;
}
// Schedules a repaint.
invalidate();
return true;
}
}
它是在这个代码之后?公共SingleTouchEventView(上下文上下文,AttributeSet attrs){super(context,attrs); – user1081908
谢谢!它帮助:) – nithinreddy