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。

你实际上可以在动画块之外设置标题，只是要确保在performWithoutAnimation中调用layoutIfNeeded():

button1.setTitle("abc", forState: .Normal)
button2.setTitle("abc", forState: .Normal)
button3.setTitle("abc", forState: .Normal)
UIView.performWithoutAnimation {
    self.button1.layoutIfNeeded()
    self.button2.layoutIfNeeded()
    self.button3.layoutIfNeeded()
}

如果你有一堆按钮，考虑在超视图上调用layoutIfNeeded():

button1.setTitle("abc", forState: .Normal)
button2.setTitle("abc", forState: .Normal)
button3.setTitle("abc", forState: .Normal)
UIView.performWithoutAnimation {
    self.view.layoutIfNeeded()
}

具有系统类型的UIButton在setTitle(_:for:)上有隐式动画。你可以用两种方法来解决这个问题:

设置按钮类型为自定义，从代码或接口生成器:

let button = UIButton(type: .custom)

从代码中禁用动画:

UIView.performWithoutAnimation {
    button.setTitle(title, for: .normal)
    button.layoutIfNeeded()
}

你可以从标题标签层中删除动画:

    [[[theButton titleLabel] layer] removeAllAnimations];

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];
}

将按钮类型更改为自定义表单界面生成器。

这对我很管用。