xamarin android how to turn Off GPS ?

Question

xamarin android how to turn Off GPS ?

i find the android code ...
but i can not translation to C# ths...

Code

public void turnGPSOn()
{
     Intent intent = new Intent("android.location.GPS_ENABLED_CHANGE");
     intent.putExtra("enabled", true);
     this.ctx.sendBroadcast(intent);

    String provider = Settings.Secure.getString(ctx.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
    if(!provider.contains("gps")){ //if gps is disabled
        final Intent poke = new Intent();
        poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider"); 
        poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
        poke.setData(Uri.parse("3")); 
        this.ctx.sendBroadcast(poke);


    }
}
// automatic turn off the gps
public void turnGPSOff()
{
    String provider = Settings.Secure.getString(ctx.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
    if(provider.contains("gps")){ //if gps is enabled
        final Intent poke = new Intent();
        poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
        poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
        poke.setData(Uri.parse("3")); 
        this.ctx.sendBroadcast(poke);
    }
}

Answer 1

Hello 德哥,​

Welcome to our Microsoft Q&A platform!

Your achievement comes from a exploite a bug in the power manager widget, But this Bug is fixed, Please see the SilithCrowe's Comment.

https://stackoverflow.com/a/5305835

If you still want to translate it to C# code. Here is your needs.

   class GPSService : IGPSService  
       {  
           public void turnGPSOff()  
           {  
               Intent intent = new Intent("android.location.GPS_ENABLED_CHANGE");  
               intent.PutExtra("enabled", true);  
     
               MainActivity.Instance.SendBroadcast(intent);  
               bool gps_enabled = false;  
              
               if (Build.VERSION.SdkInt >= BuildVersionCodes.P)  
               {  
                   // This is new method provided in API 28  
                   LocationManager lm = (LocationManager)Android.App.Application.Context.GetSystemService(Context.LocationService);  
                    
     
                   try  
                   {  
                       gps_enabled = lm.IsProviderEnabled(LocationManager.GpsProvider);  
     
                       if (!gps_enabled)  
                       {  
                           //if gps is disabled  
                           Intent poke = new Intent();  
                           poke.SetClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");  
                           poke.AddCategory(Intent.CategoryAlternative);  
                           poke.SetData(Android.Net.Uri.Parse("3"));  
     
                           MainActivity.Instance.SendBroadcast(poke);  
                       }  
     
                   }  
                   catch (Exception ex) { }  
               }  
               else  
               {  
                   // This is Deprecated in API 28  
                   string provider = Android.Provider.Settings.Secure.GetString(Android.App.Application.Context.ContentResolver, Android.Provider.Settings.Secure.LocationProvidersAllowed);  
                   if (!provider.Contains("gps"))  
                   { //if gps is disabled  
                        Intent poke = new Intent();  
                       poke.SetClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");  
                       poke.AddCategory(Intent.CategoryAlternative);  
                       poke.SetData(Android.Net.Uri.Parse("3"));  
                     
                       MainActivity.Instance.SendBroadcast(poke);  
     
                   }  
               }  
     
     
                
           }  
     
           public void turnGPSOn()  
           {  
                
     
               string provider = Android.Provider.Settings.Secure.GetString(Android.App.Application.Context.ContentResolver, Android.Provider.Settings.Secure.LocationProvidersAllowed);  
               if (!provider.Contains("gps"))  
               { //if gps is disabled  
                   Intent poke = new Intent();  
                   poke.SetClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");  
                   poke.AddCategory(Intent.CategoryAlternative);  
                   poke.SetData(Android.Net.Uri.Parse("3"));  
     
                   MainActivity.Instance.SendBroadcast(poke);  
     
               }  
           }  
       }  

PS: MainActivity.Instance is a static property set value in the OnCreate method.

   public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity  
       {  
           public static MainActivity Instance;  
           protected override void OnCreate(Bundle savedInstanceState)  
           {  
               base.OnCreate(savedInstanceState);  
               Instance = this;  
               Xamarin.Essentials.Platform.Init(this, savedInstanceState);  
             
           }  

But I want to recommand you to use following ways to enable the GPS location. It will open the location settings in System settings.

   private void ButtonEnableGPS_Click(object sender, System.EventArgs e)  
           {  
               //throw new System.NotImplementedException();  
     
               LocationManager lm = (LocationManager)Android.App.Application.Context.GetSystemService(Context.LocationService);  
               bool gps_enabled = false;  
     
               try  
               {  
                   gps_enabled = lm.IsProviderEnabled(LocationManager.GpsProvider);  
     
                   if (!gps_enabled)  
                   {  
                       //if gps is disabled  
     
     
                       Intent intent = new Intent(Android.Provider.Settings.ActionLocationSourceSettings);  
                       this.StartActivity(intent);  
                   }  
     
               }  
               catch (Exception ex) { }  
           }  

Best Regards,

Leon Lu

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Answer 2

Thank u very muck... @Leon Lu (Shanghai Wicresoft Co,.Ltd.)