iOS8 从app打开应用设置界面

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iOS8 从app打开应用设置界面

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NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
 [[UIApplication sharedApplication] openURL:settingsURL];

仅iOS8有效
UIApplicationOpenSettingsURLString的定义(来自UIApplication.h)

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UIKIT_EXTERN NSString *const UIApplicationOpenSettingsURLString NS_AVAILABLE_IOS(8_0);