在每个app中的设置页面都希望能够很方便的让用户开启/关闭消息提醒。方便用户体验。

主要代码

NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
 if ([[UIApplication sharedApplication] canOpenURL:url]) {
     [[UIApplication sharedApplication] openURL:url];
 }

例子

定位服务
定位服务有很多APP都有，如果用户关闭了定位，那么，我们在APP里面可以提示用户打开定位服务。点击到设置界面设置，直接跳到定位服务设置界面。代码如下：

//定位服务设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"];
if ([[UIApplication sharedApplication] canOpenURL:url])
{
    [[UIApplication sharedApplication] openURL:url];
}

这样就可以跳到系统设置的定位服务界面啦！

FaceTime
//FaceTime设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=FACETIME"];
if ([[UIApplication sharedApplication] canOpenURL:url])
{
    [[UIApplication sharedApplication] openURL:url];
}

音乐


//音乐设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=MUSIC"];
if ([[UIApplication sharedApplication] canOpenURL:url])
{
    [[UIApplication sharedApplication] openURL:url];
}

墙纸设置界面

//墙纸设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=Wallpaper"];
if ([[UIApplication sharedApplication] canOpenURL:url])
{
    [[UIApplication sharedApplication] openURL:url];
}

蓝牙设置界面

//蓝牙设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=Bluetooth"];
if ([[UIApplication sharedApplication] canOpenURL:url])
{
   [[UIApplication sharedApplication] openURL:url];
}

iCloud设置界面

//iCloud设置界面
NSURL *url = [NSURL URLWithString:@"prefs:root=CASTLE"];
if ([[UIApplication sharedApplication] canOpenURL:url]
{
   [[UIApplication sharedApplication] openURL:url];
}

还有一些其他的。就不一一举例了。

prefs:root=General&path=About
prefs:root=General&path=ACCESSIBILITY
prefs:root=AIRPLANE_MODE
prefs:root=General&path=AUTOLOCK
prefs:root=General&path=USAGE/CELLULAR_USAGE
prefs:root=Brightness
prefs:root=General&path=Bluetooth
prefs:root=General&path=DATE_AND_TIME
prefs:root=FACETIME
prefs:root=General
prefs:root=General&path=Keyboard
prefs:root=CASTLE
prefs:root=CASTLE&path=STORAGE_AND_BACKUP
prefs:root=General&path=INTERNATIONAL
prefs:root=LOCATION_SERVICES
prefs:root=ACCOUNT_SETTINGS
prefs:root=MUSIC
prefs:root=MUSIC&path=EQ
prefs:root=MUSIC&path=VolumeLimit
prefs:root=General&path=Network
prefs:root=NIKE_PLUS_IPOD
prefs:root=NOTES
prefs:root=NOTIFICATIONS_ID
prefs:root=Phone
prefs:root=Photos
prefs:root=General&path=ManagedConfigurationList
prefs:root=General&path=Reset
prefs:root=Sounds&path=Ringtone
prefs:root=Safari
prefs:root=General&path=Assistant
prefs:root=Sounds
prefs:root=General&path=SOFTWARE_UPDATE_LINK
prefs:root=STORE
prefs:root=TWITTER
prefs:root=General&path=USAGE
prefs:root=VIDEO
prefs:root=General&path=Network/VPN
prefs:root=Wallpaper
prefs:root=WIFI
prefs:root=INTERNET_TETHERING

如果你想跳转到本app的页面 就需要用这句。

 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];