My Android app is reported to have a virus
<p>I have uploaded an app in the Play store and I have received several comments that it has a virus in it and it sometimes forces the mobile to reboot itself. The code in my app is so simple: only one activity that has several spots and either you can hear them or set them as a ringtone. Can you suggest me anything?</p>

<p>Code of my app:</p>

<pre><code>b1_2.setOnClickListener(new View.OnClickListener() {
  public void onClick(View v) {
    if(saveas(soundid,save_name)){
      Toast.makeText(Main.this, "The sound was set as ringtone!",
        Toast.LENGTH_LONG).show();
    };
  }
});
public boolean saveas(int ressound,String filename){
  byte[] buffer=null;
  InputStream fIn = getBaseContext().getResources().openRawResource(ressound);
  int size=0;
  try {
    size = fIn.available();
    buffer = new byte[size];
    fIn.read(buffer);
    fIn.close();
  } catch (IOException e) {
    // TODO Auto-generated catch block
    return false;
  }
  String path="/sdcard/media/ringtones/";
  boolean exists = (new File(path)).exists();
  if (!exists){new File(path).mkdirs();}
  FileOutputStream save;
  try {
    save = new FileOutputStream(path+filename);
    save.write(buffer);
    save.flush();
    save.close();
  } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    return false;
    } catch (IOException e) {
      // TODO Auto-generated catch block
      return false;
    }
    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
      Uri.parse("file://"+path+filename)));
    File k = new File(path, filename);
    ContentValues values = new ContentValues();
    values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());
    values.put(MediaStore.MediaColumns.TITLE, "clip_"+save_name);
    values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/mp3");
    values.put(MediaStore.Audio.Media.ARTIST, "clip");
    values.put(MediaStore.Audio.Media.IS_RINGTONE, true);
    values.put(MediaStore.Audio.Media.IS_NOTIFICATION, true);
    values.put(MediaStore.Audio.Media.IS_ALARM, true);
    values.put(MediaStore.Audio.Media.IS_MUSIC, true);
    //Insert it into the database
    Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());
    getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" +
      k.getAbsolutePath() + "\"", null);
    Uri newUri= this.getContentResolver().insert(uri, values);
    RingtoneManager.setActualDefaultRingtoneUri(
      this, RingtoneManager.TYPE_RINGTONE, newUri);
    return true;
  }
</code></pre>

<p>Permissions required are:</p>

<pre><code>  &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt;
    &lt;uses-permission android:name="android.permission.WRITE_SETTINGS"&gt;&lt;/uses-permission&gt;
     &lt;uses-permission android:name="android.permission.INTERNET"/&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;
</code></pre>

<p>It works without internet but I just have a direct link to my developers page in google play store and in order to avoid crashes I have used this function:</p>

<pre><code>(if link is pressed)
  if (isOnline()){
    open page
} else {
  do nothing
}
public boolean isOnline() {
        boolean connectedWifi = false;
        boolean connectedMobile = false;

        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo[] networks = cm.getAllNetworkInfo();
        for (NetworkInfo ni : networks) {
            if ("WIFI".equalsIgnoreCase(ni.getTypeName()))
                if (ni.isConnected())
                    connectedWifi = true;
            if ("MOBILE".equalsIgnoreCase(ni.getTypeName()))
                if (ni.isConnected())
                    connectedMobile = true;
        }
        return connectedWifi || connectedMobile;
    }
</code></pre>
