ios8后跳到通用界面
//跳到应用的通用界面,ios8后才可以
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url];
//跳到应用的通用界面,ios8后才可以
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url];