如何从视图中删除子视图？

Question

这是我的代码。我使用此代码仅擦除imageView.image，但我也想删除imageview子视图。如何从imageView中删除子视图？

UIGraphicsBeginImageContext(imageView.frame.size);
[imageView.image drawInRect:CGRectMake(0, 0, imageView.frame.size.width, imageView.frame.size.height)];
CGContextSetLineCap(UIGraphicsGetCurrentContext(),kCGImageAlphaNone);    //kCGImageAlphaPremultipliedLast);
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 10);
CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1, 0, 0, 10);
CGContextBeginPath(UIGraphicsGetCurrentContext());
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), point.x, point.y);
//this line code for erasing select the part of the image
CGContextClearRect (UIGraphicsGetCurrentContext(), CGRectMake(point.x, point.y, 30, 30)); 
//End the code
CGContextStrokePath(UIGraphicsGetCurrentContext());
imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

Answer 1

您是否尝试过使用[imageView removeFromSuperview]？

Answer 2

如果您因某种原因尝试删除所有子视图，可以尝试：

for (UIView *view in imageView.subviews) {
    [view removeFromSuperview];
}