GPS isProviderEnabled 总是返回 false

问题描述

I've got this code

 lm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
 boolean isGPS = lm.isProviderEnabled (LocationManager.GPS_PROVIDER);

and it always return false, even when GPS is enabled. GPS is working correctly but I'm using this boolean value to show pop-up "No GPS enabled". In this situation pop-up is showing up every time

1. I checked similar questions but it doesn't help me.
2. Yes, i have permission in my manifest
3. I'm using this code in onResume method

Thanks for help.

try this way..

private void turnGPSOn(){   
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);   
if(!provider.contains("gps")){      
    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"));      
    sendBroadcast(poke);  
    } 
}  

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