Android 6.0.1 couldn't enable wifi hotspot programmatically

Question

When I tried to enable wifi tethering from the following code it throws the exception

java.lang.reflect.InvocationTargetException at java.lang.reflect.Method

Answer 1

Permission is not your problem. You need something like this code :

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.System.canWrite(getApplicationContext())) {
    Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS, Uri.parse("package:" + getPackageName()));
    startActivityForResult(intent, 200); //You need a callback for activity result so that check if user enabled this feature, go for starting hotspot (google for it)
} else {
    // Do your stuff about starting hotspot (in network thread)
}

}

Answer 2

Guys I tried everything and I wasn't able to start the hotspot in Android 6.0. You can just check if Api is >= 23, and if so just take the user to settings page to create hotspot by himself.

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    final Intent intent = new Intent(Intent.ACTION_MAIN, null);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    final ComponentName cn = new ComponentName(
                   "com.android.settings",
                   "com.android.settings.TetherSettings");
    intent.setComponent(cn);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity( intent);
}else{
   createhotSpot();
}

Answer 3

Set target SDK version 21 and ask for write_settings permission in your activity. Also add android.permission.WRITE_SETTINGS permission in manifest.

if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.WRITE_SETTINGS)){

}else {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.WRITE_SETTINGS},
            121);
}

For more details please visit http://developer.android.com/training/permissions/requesting.html

Answer 4

This is not the correct way.But this fixed the issue.

Changed the target sdk version to 21. Then hotspot will start programmatically even in android 6.0.1. Think there should be a proper way to do this for android 6 and later versions. I think requesting runtime permissions needs to execute those kind of processess. This talks about the android permission requesting in runtime

Answer 5

I think Android M don't support to create hotspot programmatically . You can take your Marshmallow user to settings page to create hotspot by himself. below code will help yo to go setting page.

  startActivity(
    new Intent(Settings.ACTION_SETTINGS));