使用iOS推送时警告错误的解决方法

在使用ios推送时，出现下面错误：

**[1412:60b] you've implemented -[<uiapplicationdelegate> application:performfetchwithcompletionhandler:], but you still need to  
add "fetch" to the list of your supported uibackgroundmodes in your info.plist. 
  
 
**[1412:60b] you've implemented -[<uiapplicationdelegate> application:didreceiveremotenotification:fetchcompletionhandler:], 
but you still need to add "remote-notification" to the list of your supported uibackgroundmodes in your info.plist. 

 解决方法：porject --> capabilities --> background modes --> background fetch & remote notifications -->选中为on 状态

我还遇到一种情况   

you've implemented -[<uiapplicationdelegate> application:didreceiveremotenotification:fetchcompletionhandler:], but you still need to add "remote-notification" to the list of your supported uibackgroundmodes in your info.plist. 

破解方法还 和上面是一样的，如图

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