隐藏键盘applicationDidEnterBackground： - 截图问题 [英] Hide keyboard in applicationDidEnterBackground: - screenshot problem

问题描述

在home键被pressed我要隐藏键盘，恢复我的看法，以一个正常的状态，这样，当应用程序被启动/重新前景化，没有被选择文本框和键盘是隐藏的。

When the home button gets pressed I want to hide the keyboard and restore my view to a sane state, so that when the app is started/foregrounded again, there is no textfield selected and the keyboard is hidden.

我的应用程序委托有这样的方法实现：

My app delegate has this implementation of the method:

- (void)applicationDidEnterBackground:(UIApplication *)application {
    [tabBarController.view endEditing:YES];
}

键盘确实得到去除，但我不明白的是这样的：苹果的文件说，该应用程序的快照拍摄的之后的方法返回。然而，这带来了用键盘滑动向下的动画的问题。有时，当应用程序再次启动了片刻它显示了键盘中途下来。我以为结束了之前的动画截图取。

The keyboard does indeed get removed, but what I don't get is this: Apple's docs say that a snapshot of the app is taken after the method returns. However this poses a problem with the keyboard slide-down animation. Sometimes when the app is started again for a short moment it shows the keyboard half-way down. I assume the screenshot is taken before the animation was finished.

我会怎么做来解决这个问题，介绍了 applicationDidEnterBackground很短的计时器：的方法？我不知道是否有一个干净的解决方案。

What would I do to solve this, introduce a short timer in the applicationDidEnterBackground: method? I wonder if there is a "cleaner" solution.

推荐答案

我还没有试过，但怎么样开启动画关闭你辞职键盘之前：

I've not tried this but what about turning animations off just before you resign the keyboard:

- (void)applicationDidEnterBackground:(UIApplication *)application {
    [UIView setAnimationsEnabled:NO];
     [tabBarController.view endEditing:YES];
}

如果这个工程需要在把他们背在applicationWillEnterForeground：中

If this works you need to turn them back on in applicationWillEnterForeground

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