在ios7中,我的UIButton标题在错误的时间动画进出——迟到。在iOS 6上不出现此问题。我用的是:

[self setTitle:text forState:UIControlStateNormal];

我更希望这能立即发生,而不是一个空白的框架。这种眨眼特别分散注意力,并将注意力从其他动画中转移开。


当前回答

结合以上的答案,可以为UIButtonTypeSystem提供以下解决方案:

if (_button.enabled)
{
    [UIView setAnimationsEnabled:NO];
    [_button setTitle:@"title" forState:UIControlStateNormal];
    [UIView setAnimationsEnabled:YES];
}
else // disabled
{
    [UIView setAnimationsEnabled:NO];
    _button.enabled = YES;
    [_button setTitle:@"title" forState:UIControlStateNormal];
    _button.enabled = NO;
    [UIView setAnimationsEnabled:YES];
}

其他回答

这适用于自定义按钮:

[UIView setAnimationsEnabled:NO];
[_button setTitle:@"title" forState:UIControlStateNormal];
[UIView setAnimationsEnabled:YES];

对于系统按钮,你需要在重新启用动画之前添加这个(谢谢@Klaas):

[_button layoutIfNeeded];

我已经做了一个Swift扩展来做这个:

extension UIButton {
    func setTitleWithoutAnimation(title: String?) {
        UIView.setAnimationsEnabled(false)

        setTitle(title, forState: .Normal)

        layoutIfNeeded()
        UIView.setAnimationsEnabled(true)
    }
}

适用于我的iOS 8和9,与UIButtonTypeSystem。

(代码是Swift 2, Swift 3和Objective-C应该类似)

我得到了它的工作组合的答案:

[[[button titleLabel] layer] removeAllAnimations];

    [UIView performWithoutAnimation:^{

        [button setTitle:@"Title" forState:UIControlStateNormal];

    }];

Swift 4版Xhacker刘回答

import Foundation
import UIKit
extension UIButton {
    func setTitleWithOutAnimation(title: String?) {
        UIView.setAnimationsEnabled(false)

        setTitle(title, for: .normal)

        layoutIfNeeded()
        UIView.setAnimationsEnabled(true)
    }
} 

请注意:

当_button的"buttonType"为"UIButtonTypeSystem"时,以下代码无效:

[UIView setAnimationsEnabled:NO];
[_button setTitle:@"title" forState:UIControlStateNormal];
[UIView setAnimationsEnabled:YES];

当_button的"buttonType"为"UIButtonTypeCustom"时,上述代码有效。