Android turn On Off WiFi HotSpot programmatically

Question

Is there an API to turn On Off the WiFi HotSpot on Android programmatically   What methods should I call to turn it On Off   UPDATE There s this option to have the HotSpot enabled  and just turn On Off the WiFi  but this is not a good solution for me

User · Answer

We can programmatically turn on and off

setWifiApDisable.invoke(connectivityManager, TETHERING_WIFI);//Have to disable to enable
setwifiApEnabled.invoke(connectivityManager, TETHERING_WIFI, false, mSystemCallback,null);

Using callback class, to programmatically turn on hotspot in pie(9.0) u need to turn off programmatically and the switch on.

User · Answer

Warning This method will not work beyond 5 0  it was a quite dated entry   You can use the following code to enable  disable and query the wifi direct state programatically   package com kusmezer androidhelper networking   import java lang reflect Method  import com google common base Preconditions  import android content Context  import android net wifi WifiConfiguration  import android net wifi WifiManager  import android util Log   public final class WifiApManager         private static final int WIFI AP STATE FAILED   4        private final WifiManager mWifiManager        private final String TAG    Wifi Access Manager         private Method wifiControlMethod        private Method wifiApConfigurationMethod        private Method wifiApState         public WifiApManager Context context  throws SecurityException  NoSuchMethodException          context   Preconditions checkNotNull context          mWifiManager    WifiManager  context getSystemService Context WIFI SERVICE          wifiControlMethod   mWifiManager getClass   getMethod  setWifiApEnabled   WifiConfiguration class boolean class          wifiApConfigurationMethod   mWifiManager getClass   getMethod  getWifiApConfiguration  null          wifiApState   mWifiManager getClass   getMethod  getWifiApState                     public boolean setWifiApState WifiConfiguration config  boolean enabled           config   Preconditions checkNotNull config          try           if  enabled                mWifiManager setWifiEnabled  enabled                     return  Boolean  wifiControlMethod invoke mWifiManager  config  enabled            catch  Exception e            Log e TAG      e           return false                         public WifiConfiguration getWifiApConfiguration                     try                return  WifiConfiguration wifiApConfigurationMethod invoke mWifiManager  null                         catch Exception e                            return null                            public int getWifiApState            try               return  Integer wifiApState invoke mWifiManager            catch  Exception e            Log e TAG      e               return WIFI AP STATE FAILED

User · Answer

APManager - Access Point Manager Step 1   Add the jcenter repository to your build file allprojects       repositories                       jcenter            Step 2   Add the dependency dependencies       implementation  com vkpapps wifimanager APManager 1 0 0     Step 3 use in your app APManager apManager   APManager getApManager this   apManager turnOnHotspot this  new APManager OnSuccessListener           Override     public void onSuccess String ssid  String password              write your logic           new APManager OnFailureListener           Override     public void onFailure int failureCode   Nullable Exception e              handle error like give access to location permission write system setting permission            disconnect wifi turn off already created hotspot enable GPS provider                    or use DefaultFailureListener class to handle automatically             check out source code https   github com vijaypatidar AndroidWifiManager

User · Answer

For Android 8 0  there is a new API to handle Hotspots  As far as I know  the old way using reflection doesn t work anymore  Please refer to   Android Developers https   developer android com reference android net wifi WifiManager html startLocalOnlyHotspot android net wifi WifiManager LocalOnlyHotspotCallback  20android os Handler   void startLocalOnlyHotspot  WifiManager LocalOnlyHotspotCallback callback                   Handler handler       Request a local only hotspot that an application can use to communicate between co-located devices connected to the created WiFi hotspot  The network created by this method will not have Internet access    Stack Overflow How to turn on off wifi hotspot programmatically in Android 8 0  Oreo      onStarted WifiManager LocalOnlyHotspotReservation reservation  method will be called if hotspot is turned on   Using WifiManager LocalOnlyHotspotReservation reference you call close   method to turn off hotspot

User · Answer

You can use the console and service for that option   I think with this you can solve that  I made a test directly in console and enable hotspot  I found this in this article  Is it possible to USB tether an android device using adb through the terminal   And after read the interface we can use the same 24 but needs more parameters     service call connectivity 24 i32 0 i32 1 i32 0 s16 random

User · Answer

I have publish unofficial api s for same  it s contains more than just hotspot turn on off  link  For API s DOC - link

User · Answer

WifiManager wifiManager    WifiManager this context getSystemService Context WIFI SERVICE   wifiManager setWifiEnabled status     where status may be true or false  add permission manifest   lt uses-permission android name  android permission CHANGE WIFI STATE    gt

User · Answer

Applies to Oreo  only     I made an app with code here on GitHub which uses reflection and DexMaker to  get at  Oreo s tethering functionality  which is now in ConnectionManager  rather than WifiManager    The stuff in WifiManager is good only for a closed wifi network  which explained the Closed bit in the class names     More explanation https   stackoverflow com a 49356255 772333

User · Answer

Warning This method will not work beyond 5 0  it was a quite dated entry   Use the class below to change check the Wifi hotspot setting   import android content    import android net wifi    import java lang reflect     public class ApManager      check whether wifi hotspot on or off public static boolean isApOn Context context        WifiManager wifimanager    WifiManager  context getSystemService context WIFI SERVICE            try           Method method   wifimanager getClass   getDeclaredMethod  isWifiApEnabled            method setAccessible true           return  Boolean  method invoke wifimanager             catch  Throwable ignored         return false        toggle wifi hotspot on or off public static boolean configApState Context context        WifiManager wifimanager    WifiManager  context getSystemService context WIFI SERVICE       WifiConfiguration wificonfiguration   null      try                if WiFi is on  turn it off         if isApOn context                                wifimanager setWifiEnabled false                                    Method method   wifimanager getClass   getMethod  setWifiApEnabled   WifiConfiguration class  boolean class                              method invoke wifimanager  wificonfiguration   isApOn context            return true             catch  Exception e            e printStackTrace                     return false         end of class   You need to add the permissions below to your AndroidMainfest    lt uses-permission android name  android permission CHANGE NETWORK STATE    gt   lt uses-permission android name  android permission CHANGE WIFI STATE    gt   lt uses-permission android name  android permission ACCESS WIFI STATE    gt    Use this standalone ApManager class from anywhere as follows   ApManager isApOn YourActivity this      check Ap state  boolean ApManager configApState YourActivity this      change Ap state  boolean   Hope this will help someone

User · Answer

For Oreo  amp  PIE    I found below way through this  private WifiManager LocalOnlyHotspotReservation mReservation  private boolean isHotspotEnabled   false  private final int REQUEST ENABLE LOCATION SYSTEM SETTINGS   101   private boolean isLocationPermissionEnable         if  ActivityCompat checkSelfPermission this  Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED            ActivityCompat requestPermissions this  new String    Manifest permission ACCESS COARSE LOCATION   2           return false            return true      RequiresApi api   Build VERSION CODES O  private void turnOnHotspot         if   isLocationPermissionEnable              return            WifiManager manager    WifiManager  getApplicationContext   getSystemService Context WIFI SERVICE        if  manager    null               Don t start when it started  existed          manager startLocalOnlyHotspot new WifiManager LocalOnlyHotspotCallback                   Override             public void onStarted WifiManager LocalOnlyHotspotReservation reservation                    super onStarted reservation                     Log d TAG   Wifi Hotspot is on now                    mReservation   reservation                  isHotspotEnabled   true                              Override             public void onStopped                     super onStopped                      Log d TAG   onStopped                      isHotspotEnabled   false                              Override             public void onFailed int reason                    super onFailed reason                     Log d TAG   onFailed                      isHotspotEnabled   false                           new Handler               RequiresApi api   Build VERSION CODES O  private void turnOffHotspot         if   isLocationPermissionEnable              return            if  mReservation    null            mReservation close            isHotspotEnabled   false            RequiresApi api   Build VERSION CODES O  private void toggleHotspot         if   isHotspotEnabled            turnOnHotspot          else           turnOffHotspot              RequiresApi api   Build VERSION CODES O  private void enableLocationSettings         LocationRequest mLocationRequest   new LocationRequest          mLocationRequest setInterval 10       mLocationRequest setSmallestDisplacement 10       mLocationRequest setFastestInterval 10       mLocationRequest setPriority LocationRequest PRIORITY HIGH ACCURACY         LocationSettingsRequest Builder builder   new LocationSettingsRequest Builder        builder addLocationRequest mLocationRequest               setAlwaysShow false      Show dialog      Task lt LocationSettingsResponse gt  task  LocationServices getSettingsClient this  checkLocationSettings builder build          task addOnCompleteListener task1 - gt            try               LocationSettingsResponse response   task1 getResult ApiException class                  All location settings are satisfied  The client can initialize location                requests here              toggleHotspot               catch  ApiException exception                switch  exception getStatusCode                      case LocationSettingsStatusCodes RESOLUTION REQUIRED                         Location settings are not satisfied  But could be fixed by showing the                        user a dialog                      try                              Cast to a resolvable exception                          ResolvableApiException resolvable    ResolvableApiException  exception                             Show the dialog by calling startResolutionForResult                               and check the result in onActivityResult                            resolvable startResolutionForResult HotspotActivity this  REQUEST ENABLE LOCATION SYSTEM SETTINGS                         catch  IntentSender SendIntentException e                               Ignore the error                        catch  ClassCastException e                               Ignore  should be an impossible error                                            break                  case LocationSettingsStatusCodes SETTINGS CHANGE UNAVAILABLE                         Location settings are not satisfied  However  we have no way to fix the                        settings so we won t show the dialog                      break                                      RequiresApi api   Build VERSION CODES O   Override protected void onActivityResult int requestCode  int resultCode  Intent data        final LocationSettingsStates states   LocationSettingsStates fromIntent data       switch  requestCode            case REQUEST ENABLE LOCATION SYSTEM SETTINGS              switch  resultCode                    case Activity RESULT OK                         All required changes were successfully made                     toggleHotspot                        Toast makeText HotspotActivity this states isLocationPresent      Toast LENGTH SHORT  show                        break                  case Activity RESULT CANCELED                         The user was asked to change settings  but chose not to                     Toast makeText HotspotActivity this  Canceled  Toast LENGTH SHORT  show                        break                  default                      break                            break            UseAge  btnHotspot setOnClickListenr view - gt       if  Build VERSION SDK INT  gt   Build VERSION CODES O               Step 1  Enable the location settings use Google Location Service            Step 2  https   stackoverflow com questions 29801368 how-to-show-enable-location-dialog-like-google-maps 50796199 50796199            Step 3  If OK then check the location permission and enable hotspot            Step 4  https   stackoverflow com questions 46843271 how-to-turn-off-wifi-hotspot-programmatically-in-android-8-0-oreo-setwifiapen         enableLocationSettings            return            lt uses-permission android name  android permission ACCESS COARSE LOCATION    gt   implementation  com google android gms play-services-location 15 0 1

User · Answer

Here s the complete solution if you want to implement the wifi hotspot feature programmatically in your android app   SOLUTION FOR API  lt  26   For devices  lt  API 26  There is no public API by Android for this purpose  So  in order to work with those APIs you ve to access private APIs through reflection  It is not recommended but if you ve no other options left  then here s a trick   First of all  you need to have this permission in your manifest      lt uses-permission     android name  android permission WRITE SETTINGS      tools ignore  ProtectedPermissions   gt      lt uses-permission android name  android permission ACCESS NETWORK STATE   gt     lt uses-permission android name  android permission CHANGE WIFI STATE   gt     lt uses-permission android name  android permission ACCESS WIFI STATE   gt    Here s how you can ask it on run-time    private boolean showWritePermissionSettings         if  Build VERSION SDK INT  gt   Build VERSION CODES M        amp  amp  Build VERSION SDK INT  lt  Build VERSION CODES O       if   Settings System canWrite this             Log v  DANG          Settings System canWrite this           Intent intent   new Intent android provider Settings ACTION MANAGE WRITE SETTINGS        intent setData Uri parse  package     this getPackageName            intent addFlags Intent FLAG ACTIVITY NEW TASK        this startActivity intent        return false               return true    Permission already given      You can then access the setWifiEnabled method through reflection  This returns true if the action you asked for is being process correctly i e  enabling disabling hotspot        public boolean setWifiEnabled WifiConfiguration wifiConfig  boolean enabled      WifiManager wifiManager  try        if  enabled      disables wifi hotspot if it s already enabled         wifiManager setWifiEnabled false              Method method   wifiManager getClass             getMethod  setWifiApEnabled   WifiConfiguration class  boolean class        return  Boolean  method invoke wifiManager  wifiConfig  enabled      catch  Exception e       Log e this getClass   toString        e      return false            You can also get the wificonfiguration of your hotspot through reflection  I ve answered that method for this question on StackOverflow   P S  If you don t want to turn on hotspot programmatically  you can start this intent  and open the wifi settings screen for user to turn it on manually   SOLUTION FOR API    26   Finally  android released an official API for versions    Oreo  You can just use the public exposed API by android i e  startLocalOnlyHotspot  It turns on a local hotspot without internet access  Which thus can be used to host a server or transfer files   It requires Manifest permission CHANGE WIFI STATE and ACCESS FINE LOCATION permissions   Here s a simple example of how you can turn on hotspot using this API   private WifiManager wifiManager  WifiConfiguration currentConfig  WifiManager LocalOnlyHotspotReservation hotspotReservation    The method to turn on hotspot    RequiresApi api   Build VERSION CODES O  public void turnOnHotspot            wifiManager startLocalOnlyHotspot new WifiManager LocalOnlyHotspotCallback               Override         public void onStarted WifiManager LocalOnlyHotspotReservation reservation              super onStarted reservation             hotspotReservation   reservation            currentConfig   hotspotReservation getWifiConfiguration               Log v  DANG    THE PASSWORD IS                    currentConfig preSharedKey                    n SSID is                     currentConfig SSID              hotspotDetailsDialog                         Override         public void onStopped               super onStopped              Log v  DANG    Local Hotspot Stopped                        Override         public void onFailed int reason              super onFailed reason             Log v  DANG    Local Hotspot failed to start                       new Handler               Here s how you can get details of the locally created hotspot  private void hotspotDetaisDialog          Log v TAG  context getString R string hotspot details message      n    context getString                R string hotspot ssid label          currentConfig SSID     n    context getString                R string hotspot pass label          currentConfig preSharedKey        If it throws  a security exception even after giving the required permissions then you should try enabling your location using GPS  Here s the solution   Recently  I ve developed a demo app called Spotserve  That turns on wifi hotspot for all devices with API  15 and hosts a demo server on that hotspot  You can check that for more details  Hope this helps

User · Answer

This works well for me   WifiConfiguration apConfig   null  Method method   wifimanager getClass   getMethod  setWifiApEnabled   WifiConfiguration class  Boolean TYPE   method invoke wifimanager  apConfig  true

User · Answer

Your best bet will be looking at the WifiManager class  Specifically the setWifiEnabled bool  function   See the documentation at  http   developer android com reference android net wifi WifiManager html setWifiEnabled boolean   A tutorial on how to use it  including what permissions you need  can be found here  http   www tutorialforandroid com 2009 10 turn-off-turn-on-wifi-in-android-using html

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