ios - 关于 iOS 中的 UIActivityIndicatorView
<p><p>假设有一个<code>UIView</code>作为容器,里面包含一个<code>UIActivityIndicatorView</code>和其他 subview 。当<code>UIActivityIndicatorView</code>动画时,它设置<code>userInteractionEnabled</code> 属性设置为 NO,这使得它的所有兄弟 View 都停止接收输入事件。</p>
<p>我查看了Apple的文档,它建议我们可以使用<code>UIViewAnimationOptionAllowUserInteraction</code>常量来解决这个问题。但我不知道在哪里或哪个属性设置这个常量。有没有人遇到过这个问题并解决是吗?</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p><code>UIViewAnimationOptionAllowUserInteraction</code> 是使用 block 动画 View 的选项之一。允许用户在动画制作时与 View 进行交互。 </p>
<pre><code>enum {
UIViewAnimationOptionLayoutSubviews = 1 <<0,
UIViewAnimationOptionAllowUserInteraction = 1 <<1,
UIViewAnimationOptionBeginFromCurrentState = 1 <<2,
UIViewAnimationOptionRepeat = 1 <<3,
UIViewAnimationOptionAutoreverse = 1 <<4,
UIViewAnimationOptionOverrideInheritedDuration = 1 <<5,
UIViewAnimationOptionOverrideInheritedCurve = 1 <<6,
UIViewAnimationOptionAllowAnimatedContent = 1 <<7,
UIViewAnimationOptionShowHideTransitionViews = 1 <<8,
UIViewAnimationOptionCurveEaseInOut = 0 << 16,
UIViewAnimationOptionCurveEaseIn = 1 << 16,
UIViewAnimationOptionCurveEaseOut = 2 << 16,
UIViewAnimationOptionCurveLinear = 3 << 16,
UIViewAnimationOptionTransitionNone = 0 << 20,
UIViewAnimationOptionTransitionFlipFromLeft = 1 << 20,
UIViewAnimationOptionTransitionFlipFromRight = 2 << 20,
UIViewAnimationOptionTransitionCurlUp = 3 << 20,
UIViewAnimationOptionTransitionCurlDown = 4 << 20,
UIViewAnimationOptionTransitionCrossDissolve = 5 << 20,
UIViewAnimationOptionTransitionFlipFromTop = 6 << 20,
UIViewAnimationOptionTransitionFlipFromBottom= 7 << 20,
};
typedef NSUInteger UIViewAnimationOptions;
</code></pre>
<p>但我不知道它对您使用 UIActivityIndicatorView 有何帮助。简单例子:</p>
<pre><code>[UIView animateWithDuration:0.4f
delay:0.2f
options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionCurveEaseInOut
animations:^{
;
}
completion:^(BOOL finished){
NSLog(@"completed");
}
];
</code></pre></p>
<p style="font-size: 20px;">关于ios - 关于 iOS 中的 UIActivityIndicatorView,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/7912436/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/7912436/
</a>
</p>
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