如何调整UIButton的大小以适合UIImageView？

Question

I have a UIButton over a UIImageView. I want the button to adjust its size to fit the imageview. I tried a few different ways but can't get it. Anyone know how to do this?

Answer 1

You can add some padding like this:

NSInteger padding = 10;
CGRect newFrame = myImageView.bounds;
newFrame.origin.x += padding / 2.0;
newFrame.origin.y += padding / 2.0;
newFrame.size.width -= padding;
newFrame.size.height -= padding;
myButton.frame = newFrame;

Answer 2

尝试这个

    [btn sizeThatFits:CGSizeMake(img.size.width, img.size.height)];

Answer 3

只需在Interface-Builder中创建一个带有图像视图的自定义按钮即可。

Answer 4

you can use--

UIImage *img = [UIImage imageNamed:@"7.png"];// image to be use
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, img.size.width, img.size.height)];// set button frame accordingly.