iphone - UIEdgeInsets 定位文本/图像问题

Question

我尝试制作一个 UIButton ，图像位于文本上方，因此我使用以下代码:

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(x, y, 140, 140);
[btn setTitle:self.objMateria.titoloMateria forState:UIControlStateNormal];
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[btn setBackgroundColor:[UIColor clearColor]];
[btn setImage:[UIImage imageNamed:@"pala.png"] forState:UIControlStateNormal];
btn.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 20, 0);
btn.titleEdgeInsets = UIEdgeInsetsMake(120, 0, 0, 0);

问题是，使用这段代码我看不到文本，它似乎被图像覆盖了，错误在哪里？

这里是图片:

Answer 1

试试这个

btn.imageEdgeInsets = UIEdgeInsetsMake(-20, 0, 0, 0);
btn.titleEdgeInsets = UIEdgeInsetsMake(120, -120, 0, 0);

调整-120的值，即left以水平适合您的标题