iphone - UIButton 上的 backgroundImage 缩放错误

Question

我试图在用户按下按钮时为我的 UIButton 提供新的背景图像，然后设置宽度动画。问题是按钮不缩放图像(我只使用视网膜图像)。

点击前:

点击后:

以及让事情发生的代码:

UIImage *buttonProfileDefault = [[UIImage imageNamed:@"Profile_Button_Default"] resizableImageWithCapInsets:UIEdgeInsetsMake(3, 3, 3, 3)];
        [self.profileButton setBackgroundImage:buttonProfileDefault forState:UIControlStateNormal];

[self.profileButton removeConstraint:self.profileButtonConstraint];

// Animate
CGRect originalFrame = self.profileButton.frame;
originalFrame.size.width = 40;
[UIView animateWithDuration:0.2f
    animations:^{
        self.profileButton.frame = originalFrame;
    }
        completion:^(BOOL finished) {
    }];

Answer 1

试试这个代码...

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:1.0];
    [self.profileButton setBackgroundImage:[UIImage imageNamed:@"Profile_Button_Default"] forState:UIControlStateNormal];
    [self.profileButton setBackgroundImage:[UIImage imageNamed:@"Profile_Button_Default"] forState:UIControlStateSelected];
    [self.profileButton setFrame:CGRectMake(self.profileButton.frame.origin.x, self.profileButton.frame.origin.y, self.profileButton.frame.size.width + 40, self.profileButton.frame.size.height)];
    [UIView commitAnimations];

希望对你有帮助...