Opening the Settings app from another app_问答_开发者

Okay, I know that there are many question about it, but they are all from many time ago.

S开发者_JS百科o. I know that it is possible because the Map app does it.

In the Map app if I turn off the localization for this app, it send me a message, and if I press okay, the "Settings App" will be open. And my question is, how is this possible? How can I open the "Setting app" from my own app?

Basically I need to do the same thing, if the user turn off the location for my app, then I'll show him a message saying something that will open the "Setting app"

As mentioned by Karan Dua this is now possible in iOS8 using UIApplicationOpenSettingsURLString see Apple's Documentation.

Example:

Swift 4.2

UIApplication.shared.open(URL(string: UIApplication.openSettingsURLString)!)

In Swift 3:

UIApplication.shared.open(URL(string:UIApplicationOpenSettingsURLString)!)

In Swift 2:

UIApplication.sharedApplication().openURL(NSURL(string:UIApplicationOpenSettingsURLString)!)

In Objective-C

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

Prior to iOS 8:

You can not. As you said this has been covered many times and that pop up asking you to turn on location services is supplied by Apple and not by the App itself. That is why it is able to the open the settings application.

Here are a few related questions & articles:

is it possible to open Settings App using openURL?

Programmatically opening the settings app (iPhone)

How can I open the Settings app when the user presses a button?

iPhone: Opening Application Preferences Panel From App

Open UIPickerView by clicking on an entry in the app's preferences - How to?

Open the Settings app?

iOS: You’re Doing Settings Wrong

From @Yatheeshaless's answer:

You can open settings app programmatically in iOS8, but not in earlier versions of iOS.

Swift:

   UIApplication.sharedApplication().openURL(NSURL(string:UIApplicationOpenSettingsURLString)!)

Swift 4:

if let url = NSURL(string: UIApplicationOpenSettingsURLString) as URL? {
    UIApplication.shared.openURL(url)
}

Swift 4.2 (BETA):

if let url = NSURL(string: UIApplication.openSettingsURLString) as URL? {
    UIApplication.shared.open(url, options: [:], completionHandler: nil)
}

Objective-C:

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

YES!! you can launch Device Settings screen, I have tested on iOS 9.2

Step 1. we need to add URL schemes

Go to Project settings --> Info --> URL Types --> Add New URL Schemes

Opening the Settings app from another app

Step 2. Launch Settings programmatically Thanks to @davidcann

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs://"]];

Also we can launch sub-screens like Music, Location etc. as well by just using proper name

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=MUSIC"]];

See this full name list here shared by Henri Normak

Update:

As per the comment everyone wants to know what happens after this change to my application submission status?

So YES!! I got successful update submission and application is available on store without any complain.

Just to confirm, I Just downloaded this morning and disabled Location services, and then started the app, which asked me for location permission and then my alert popup was there to send me on settings -> location services page --> Enabled --> That's it!!

![NOTICE: Your app might be rejected ... even if it's approved it can be rejected in future version if you use this method...]4

Seems like you can use the prefs:<area> URL to open the settings and go to specific areas. Apple could change these and break your app so always check if you can open them first.

From this article they have listed some of them for iOS 13.1:

Settings URLs

iCloud

iCloud: prefs:root=CASTLE
iCloud Backup: prefs:root=CASTLE&path=BACKUP

Wireless Radios

Wi-Fi: prefs:root=WIFI
Bluetooth: prefs:root=Bluetooth
Cellular: prefs:root=MOBILE_DATA_SETTINGS_ID

Personal Hotspot

Personal Hotspot: prefs:root=INTERNET_TETHERING
Personal Hotspot ⇾ Family Sharing: prefs:root=INTERNET_TETHERING&path=Family%20Sharing
Personal Hotspot ⇾ Wi-Fi Password: prefs:root=INTERNET_TETHERING&path=Wi-Fi%20Password

VPN

VPN: prefs:root=General&path=VPN

Notifications

Notifications: prefs:root=NOTIFICATIONS_ID
Notifications ⇾ Siri Suggestions: prefs:root=NOTIFICATIONS_ID&path=Siri%20Suggestions

Sounds

Sounds: prefs:root=Sounds
Ringtone: prefs:root=Sounds&path=Ringtone

Do Not Disturb

Do Not Disturb: prefs:root=DO_NOT_DISTURB
Do Not Disturb ⇾ Allow Calls From: prefs:root=DO_NOT_DISTURB&path=Allow%20Calls%20From

Screen Time

Screen Time: prefs:root=SCREEN_TIME
Screen Time ⇾ Downtime: prefs:root=SCREEN_TIME&path=DOWNTIME
Screen Time ⇾ App Limits: prefs:root=SCREEN_TIME&path=APP_LIMITS
Screen Time ⇾ Always Allowed: prefs:root=SCREEN_TIME&path=ALWAYS_ALLOWED

General

General: prefs:root=General
General ⇾ About: prefs:root=General&path=About
General ⇾ Software Update: prefs:root=General&path=SOFTWARE_UPDATE_LINK
General ⇾ CarPlay: prefs:root=General&path=CARPLAY
General ⇾ Background App Refresh: prefs:root=General&path=AUTO_CONTENT_DOWNLOAD
General ⇾ Multitasking (iPad-only): prefs:root=General&path=MULTITASKING
General ⇾ Date & Time: prefs:root=General&path=DATE_AND_TIME
General ⇾ Keyboard: prefs:root=General&path=Keyboard
General ⇾ Keyboard ⇾ Keyboards: prefs:root=General&path=Keyboard/KEYBOARDS
General ⇾ Keyboard ⇾ Hardware Keyboard: prefs:root=General&path=Keyboard/Hardware%20Keyboard
General ⇾ Keyboard ⇾ Text Replacement: prefs:root=General&path=Keyboard/USER_DICTIONARY
General ⇾ Keyboard ⇾ One Handed Keyboard: prefs:root=General&path=Keyboard/ReachableKeyboard
General ⇾ Language & Region: prefs:root=General&path=INTERNATIONAL
General ⇾ Dictionary: prefs:root=General&path=DICTIONARY
General ⇾ Profiles: prefs:root=General&path=ManagedConfigurationList
General ⇾ Reset: prefs:root=General&path=Reset

Control Center

Control Center: prefs:root=ControlCenter
Control Center ⇾ Customize Controls: prefs:root=ControlCenter&path=CUSTOMIZE_CONTROLS

Display

Display: prefs:root=DISPLAY
Display ⇾ Auto Lock: prefs:root=DISPLAY&path=AUTOLOCK
Display ⇾ Text Size: prefs:root=DISPLAY&path=TEXT_SIZE

Accessibility

Accessibility: prefs:root=ACCESSIBILITY

Wallpaper

Wallpaper: prefs:root=Wallpaper

Siri

Siri: prefs:root=SIRI

Apple Pencil

Apple Pencil (iPad-only): prefs:root=Pencil

Face ID

Face ID: prefs:root=PASSCODE

Emergency SOS

Emergency SOS: prefs:root=EMERGENCY_SOS

Battery

Battery: prefs:root=BATTERY_USAGE
Battery ⇾ Battery Health (iPhone-only): prefs:root=BATTERY_USAGE&path=BATTERY_HEALTH

Privacy

Privacy: prefs:root=Privacy
Privacy ⇾ Location Services: prefs:root=Privacy&path=LOCATION
Privacy ⇾ Contacts: prefs:root=Privacy&path=CONTACTS
Privacy ⇾ Calendars: prefs:root=Privacy&path=CALENDARS
Privacy ⇾ Reminders: prefs:root=Privacy&path=REMINDERS
Privacy ⇾ Photos: prefs:root=Privacy&path=PHOTOS
Privacy ⇾ Microphone: prefs:root=Privacy&path=MICROPHONE
Privacy ⇾ Speech Recognition: prefs:root=Privacy&path=SPEECH_RECOGNITION
Privacy ⇾ Camera: prefs:root=Privacy&path=CAMERA
Privacy ⇾ Motion: prefs:root=Privacy&path=MOTION\

App Store

App Store: prefs:root=STORE
App Store ⇾ App Downloads: prefs:root=STORE&path=App%20Downloads
App Store ⇾ Video Autoplay: prefs:root=STORE&path=Video%20Autoplay

Wallet

Wallet: prefs:root=PASSBOOK

Passwords & Accounts

Passwords & Accounts: prefs:root=ACCOUNTS_AND_PASSWORDS
Passwords & Accounts ⇾ Fetch New Data: prefs:root=ACCOUNTS_AND_PASSWORDS&path=FETCH_NEW_DATA
Passwords & Accounts ⇾ Add Account: prefs:root=ACCOUNTS_AND_PASSWORDS&path=ADD_ACCOUNT

Mail

Mail: prefs:root=MAIL
Mail ⇾ Preview: prefs:root=MAIL&path=Preview
Mail ⇾ Swipe Options: prefs:root=MAIL&path=Swipe%20Options
Mail ⇾ Notifications: prefs:root=MAIL&path=NOTIFICATIONS
Mail ⇾ Blocked: prefs:root=MAIL&path=Blocked
Mail ⇾ Muted Thread Action: prefs:root=MAIL&path=Muted%20Thread%20Action
Mail ⇾ Blocked Sender Options: prefs:root=MAIL&path=Blocked%20Sender%20Options
Mail ⇾ Mark Addresses: prefs:root=MAIL&path=Mark%20Addresses
Mail ⇾ Increase Quote Level: prefs:root=MAIL&path=Increase%20Quote%20Level
Mail ⇾ Include Attachments with Replies: prefs:root=MAIL&path=Include%20Attachments%20with%20Replies
Mail ⇾ Signature: prefs:root=MAIL&path=Signature
Mail ⇾ Default Account: prefs:root=MAIL&path=Default%20Account

Contacts

Contacts: prefs:root=CONTACTS

Calendar

Calendar: prefs:root=CALENDAR
Calendar ⇾ Alternate Calendars: prefs:root=CALENDAR&path=Alternate%20Calendars
Calendar ⇾ Sync: prefs:root=CALENDAR&path=Sync
Calendar ⇾ Default Alert Times: prefs:root=CALENDAR&path=Default%20Alert%20Times
Calendar ⇾ Default Calendar: prefs:root=CALENDAR&path=Default%20Calendar

Notes

Notes: prefs:root=NOTES
Notes ⇾ Default Account: prefs:root=NOTES&path=Default%20Account
Notes ⇾ Password: prefs:root=NOTES&path=Password
Notes ⇾ Sort Notes By: prefs:root=NOTES&path=Sort%20Notes%20By
Notes ⇾ New Notes Start With: prefs:root=NOTES&path=New%20Notes%20Start%20With
Notes ⇾ Sort Checked Items: prefs:root=NOTES&path=Sort%20Checked%20Items
Notes ⇾ Lines & Grids: prefs:root=NOTES&path=Lines%20%26%20Grids
Notes ⇾ Access Notes from Lock Screen: prefs:root=NOTES&path=Access%20Notes%20from%20Lock%20Screen

Reminders

Reminders: prefs:root=REMINDERS
Reminders ⇾ Default List: prefs:root=REMINDERS&path=DEFAULT_LIST

Voice Memos

Voice Memos: prefs:root=VOICE_MEMOS

Phone

Phone: prefs:root=Phone

Messages

Messages: prefs:root=MESSAGES

FaceTime

FaceTime: prefs:root=FACETIME

Maps

Maps: prefs:root=MAPS
Maps ⇾ Driving & Navigation: prefs:root=MAPS&path=Driving%20%26%20Navigation
Maps ⇾ Transit: prefs:root=MAPS&path=Transit

Compass

Compass: prefs:root=COMPASS

Measure

Measure: prefs:root=MEASURE

Safari

Safari: prefs:root=SAFARI
Safari ⇾ Content Blockers: prefs:root=SAFARI&path=Content%20Blockers
Safari ⇾ Downloads: prefs:root=SAFARI&path=DOWNLOADS
Safari ⇾ Close Tabs: prefs:root=SAFARI&path=Close%20Tabs
Safari ⇾ Clear History and Data: prefs:root=SAFARI&path=CLEAR_HISTORY_AND_DATA
Safari ⇾ Page Zoom: prefs:root=SAFARI&path=Page%20Zoom
Safari ⇾ Request Desktop Website: prefs:root=SAFARI&path=Request%20Desktop%20Website
Safari ⇾ Reader: prefs:root=SAFARI&path=Reader
Safari ⇾ Camera: prefs:root=SAFARI&path=Camera
Safari ⇾ Microphone: prefs:root=SAFARI&path=Microphone
Safari ⇾ Location: prefs:root=SAFARI&path=Location
Safari ⇾ Advanced: prefs:root=SAFARI&path=ADVANCED

News

News: prefs:root=NEWS

Health

Health: prefs:root=HEALTH

Shortcuts

Shortcuts: prefs:root=SHORTCUTS

Music

Music: prefs:root=MUSIC
Music ⇾ Cellular Data: prefs:root=MUSIC&path=com.apple.Music:CellularData
Music ⇾ Optimize Storage: prefs:root=MUSIC&path=com.apple.Music:OptimizeStorage
Music ⇾ EQ: prefs:root=MUSIC&path=com.apple.Music:EQ
Music ⇾ Volume Limit: prefs:root=MUSIC&path=com.apple.Music:VolumeLimit

Settings ⇾ TV: prefs:root=TVAPP

Photos

Photos: prefs:root=Photos

Camera

Camera: prefs:root=CAMERA
Camera ⇾ Record Video: prefs:root=CAMERA&path=Record%20Video
Camera ⇾ Record Slo-mo: prefs:root=CAMERA&path=Record%20Slo-mo

Books

Books: prefs:root=IBOOKS

Game Center

Game Center: prefs:root=GAMECENTER

~~You can use this on iOS 5.0 and later:~~ This no longer works.

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs://"]];

iOS 10 update

Apple changed the method to open async on the main thread. However, from now it is only possible to open the app settings in native settings.

[[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];

iOS 9 update

It is now possible to go directly to sub-settings menu. However, a URL scheme has to be created. It can be done using two ways:

XCode - You will find it in Target, Info, URL Scheme. Then, just type prefs.
Directly adding to *-Info.plist. Add the following: <key>CFBundleURLTypes</key> <array> <dict> <key>CFBundleTypeRole</key> <string>Editor</string> <key>CFBundleURLSchemes</key> <array> <string>prefs</string> </array> </dict> </array>

Then the code:

Swift

UIApplication.sharedApplication().openURL(NSURL(string:"prefs:root=General&path=Keyboard")!)

Objective-c

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Keyboard"]];

In Swift 3 / iOS 10+ this now looks like

if let url = URL(string: "App-Prefs:root=LOCATION_SERVICES") {
    UIApplication.shared.open(url, completionHandler: .none)
}

In Swift 3 all I needed is this (here for example redirect to my app notifications):

if let url = URL(string: "App-Prefs:root=NOTIFICATIONS_ID&path=your app bundleID") {
    if #available(iOS 10.0, *) {
        UIApplication.shared.open(url, completionHandler: .none)
    } else {
        // Fallback on earlier versions
    }
}

Source: phynet gist.

This worked with me only when settings is in background. It will redirect you to your app notification settings but if settings wasn't running in the background it will just redirect you to notification settings in general.

Swift 3:

guard let url = URL(string: UIApplicationOpenSettingsURLString) else {return}
if #available(iOS 10.0, *) {
  UIApplication.shared.open(url, options: [:], completionHandler: nil)
} else {
  // Fallback on earlier versions
  UIApplication.shared.openURL(url)
}

UIApplicationOpenSettingsURLString this will only work if you have previously allowed for any permission. For example Location, Photo, Contact, Push notification access. So if you have not such permission(s) from the user:

If iOS 10 or above,

It will open the Settings but then crash it. The reason, there's nothing in settings for your app.

Below code will open your application settings inside the iOS Setting.

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

Due to device unavailability, I couldn't check this on iOS < 10.

Also, I could find below code from some gist and it works fine on iOS 10 as well. But I am not sure if this will approve by Apple review team or not.

https://gist.github.com/johnny77221/bcaa5384a242b64bfd0b8a715f48e69f

You can use the below code for it.

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

As openURL(_:) is deprecated after iOS 10.0, use open(_:options:completionHandler:) instead.

if let settingsUrl = URL(string: UIApplication.openSettingsURLString)  {
        UIApplication.shared.open(settingsUrl, options: [:]) { completed in
             if !completed {
                 print("Failed opening")
             }
        }
}

Tested with iOS 10. Working

NSArray* urlStrings = @[@"prefs:root=WIFI", @"App-Prefs:root=WIFI"];
for(NSString* urlString in urlStrings){
NSURL* url = [NSURL URLWithString:urlString];
if([[UIApplication sharedApplication] canOpenURL:url]){
    [[UIApplication sharedApplication] openURL:url];
    break;
}
}

Happy Coding :)

SWIFT 4.0

'openURL' was deprecated in iOS 10.0: Please use openURL:options:completionHandler: instead

UIApplication.shared.open(URL.init(string: UIApplicationOpenSettingsURLString)! , options: [:], completionHandler: nil)

Swift 4

I prefer to open setting in a safer way,

if let settingUrl = URL(string:UIApplicationOpenSettingsURLString) {

    UIApplication.shared.open(settingUrl)
}
else {
    print("Setting URL invalid")
}

Swift You can use following function to open Settings App with Bluetooth Page

func openSettingsApp(){
    if let settings = NSURL(string: "prefs:root=Bluetooth") {
        UIApplication.sharedApplication().openURL(settings)
    }
}

Again this would not open the App's Settings. This would open settings app with Bluetooth as this is deep linking to bluetooth.

To add to accepted answer: (from apple developer documentation) "When you open the URL built from this string (openSettingsURLString), the system launches the Settings app and displays the app’s custom settings, if it has any." So, if you want to open settings for your app, create your own Settings.bundle.

Add this to your class,

 public class func showSettingsAlert(title:String,message:String,onVC viewController:UIViewController,onCancel:(()->())?){
            YourClass.show2ButtonsAlert(onVC: viewController, title: title, message: message, button1Title: "Settings", button2Title: "Cancel", onButton1Click: {
                if let settingsURL = NSURL(string: UIApplicationOpenSettingsURLString){
                    UIApplication.sharedApplication().openURL(settingsURL)
                }
                }, onButton2Click: {
                    onCancel?()
            })
        }

 public class func show2ButtonsAlert(onVC viewController:UIViewController,title:String,message:String,button1Title:String,button2Title:String,onButton1Click:(()->())?,onButton2Click:(()->())?){
            dispatch_async(dispatch_get_main_queue()) {
                let alert : UIAlertController = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)

                alert.addAction(UIAlertAction(title: button1Title, style:.Default, handler: { (action:UIAlertAction) in
                    onButton1Click?()
                }))

                alert.addAction(UIAlertAction(title: button2Title, style:.Default, handler: { (action:UIAlertAction) in
                    onButton2Click?()
                }))

                viewController.presentViewController(alert, animated: true, completion: nil)
            }
        }

Call like this,

YourClass.showSettingsAlert("App would like to access camera", message: "App would like to access camera desc", onVC: fromViewController, onCancel: {
  print("canceled")
})