iOS的9 UIPasteboard不会在后台工作 [英] iOS 9 UIPasteboard won't work in the background

问题描述

9 iOS版的 [UIPasteboard generalPasteboard] .string 将成为空当应用程序在运行的后台任务或今天插件的背景。

iOS 9's [UIPasteboard generalPasteboard].string will become null when the app is in the background running a background task or Today widget.

我们不能检索后台剪贴板文本了吗？

Can't we retrieve a clipboard text in the background any more?

推荐答案

你能解释一下你在哪里发动generalPasteboard？

Can you explain where do you launch generalPasteboard?.

这是我会做什么：

在您的应用程序委托的applicationdidBecomeActive方法把这个code：

In your app delegate's applicationdidBecomeActive method put in this code:

[[NSNotificationCenter defaultCenter] postNotificationName:@"appDidBecomeActive" object:nil];

接下来，在您的当前活动视图控制器的init方法订阅通知。

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(returnFromBg)        
                                             name:@"appDidBecomeActive" 
                                             object:nil];

- (void)returnFromBg {
       UIPasteboard *appPasteBoard = [UIPasteboard generalPasteboard];
       yourTextField.text = [appPasteBoard string;
}

PS不要忘了删除观察者当视图控制器被删除：

PS Don't forgot to remove the observer when the view controller is removed:

[[NSNotificationCenter defaultCenter] removeObserver:self];

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