显示蜂窝数据已关闭警报 [英] Showing cellular data is turned off alert

问题描述

如何显示此警报视图？我知道我需要检查连接的可达性，但如何通过设置和确定按钮显示此警报？
iOS 6我需要它。

How can I show this alert view? I know that I need check connection with reachability, but how do I show this alert with settings and ok button? I need it for iOS 6.

推荐答案

不幸的是，在iOS 5.1及更高版本中，您无法从应用程序中打开设置应用程序。

Unfortunately in iOS 5.1 and later you can't open settings app from your app.

如果您使用的是较小版本，则以下内容将起作用。

If you are using lesser version the following will work.

创建警报视图，如：

UIAlertView *cellularData = [[UIAlertView alloc] initWithTitle: @"Cellular Data is Turned Off" message:@"Turn on ellular data or use Wi-Fi to access data"  delegate:self cancelButtonTitle:@"OK" otherButtonTitles:@"Settings", nil];
[cellularData show];

实施 clickedButtonAtIndex ，如：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
   if(buttonIndex == 1)
   {
      [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Network"]]
   }
}

它将从您的应用程序中打开设置应用程序。

It'll open the settings app from your application.

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