“Calling this from your main thread can lead to de

Question

In my android application, I am trying to get AccessToken from GoogleAuthUtil as below :

accessToken = GoogleAuthUtil.getToken(this, mPlusClient.getAccountName(), "oauth2:" + SCOPES);

But At this line I am gettting error as below :

E/GoogleAuthUtil(4696): Calling this from your main thread can lead to deadlock and/or ANRs E/GoogleAuthUtil(4696): java.lang.IllegalStateException: calling this from your main thread can lead to deadlock E/GoogleAuthUtil(4696): at com.google.android.gms.auth.GoogleAuthUtil.b(Unknown Source) E/GoogleAuthUtil(4696): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source) E/GoogleAuthUtil(4696): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)

Any solution of this problem? Any help will be appreciated.

Answer 1

            Thread CrearEventoHilo = new Thread(){
                public void run(){
                    //do something that retrun "Calling this from your main thread can lead to deadlock"
                }
            };
            CrearEventoHilo.start();

CrearEventoHilo.interrupt();

public class Foo {
    MyThread mTh;
    void cantBeBothered() {
        mTh = new MyThread( /*...*/ );
        mTh.run();
        mTh.start();
    }
    void imFinishedNowWaitingForThread() {
        mTh.join();
    }
    void imOutKillingOffPendingThread()  {
        mTh.interrupt();
    }
//  .....
    private class MyThread extends Thread {
//      ...;
        MyThread( /*...*/) {
//          this... = ...;
        }
        public void run() {
            doSomething( /*this...*/ );
        }
    }
}

Answer 2

E/GoogleAuthUtil(4696): java.lang.IllegalStateException: calling this from your main thread can lead to deadlock

Sounds like you need to do that on a separate thread, have you tried that?

Here you can find information about threads in Android.

Answer 3

Use separate thread for your internet code. Error is telling that more time consuming process is running in the app and here that is internet. So use separate thread or Async task.

Check out this link NetworkOnMainThreadException

Hope it will help you.

Answer 4

Try it with an AsyncTask like this:

        AsyncTask<Void, Void, String> task = new AsyncTask<Void, Void, String>() {
            @Override
            protected String doInBackground(Void... params) {
                String token = null;

                try {
                    token = GoogleAuthUtil.getToken(
                            MainActivity.this,
                            mGoogleApiClient.getAccountName(),
                            "oauth2:" + SCOPES);
                } catch (IOException transientEx) {
                    // Network or server error, try later
                    Log.e(TAG, transientEx.toString());
                } catch (UserRecoverableAuthException e) {
                    // Recover (with e.getIntent())
                    Log.e(TAG, e.toString());
                    Intent recover = e.getIntent();
                    startActivityForResult(recover, REQUEST_CODE_TOKEN_AUTH);
                } catch (GoogleAuthException authEx) {
                    // The call is not ever expected to succeed
                    // assuming you have already verified that 
                    // Google Play services is installed.
                    Log.e(TAG, authEx.toString());
                }

                return token;
            }

            @Override
            protected void onPostExecute(String token) {
                Log.i(TAG, "Access token retrieved:" + token);
            }

        };
        task.execute();

SCOPES is a space separated list of OAuth 2.0 scope strings. For example SCOPES could be defined as:

public static final String SCOPES = "https://www.googleapis.com/auth/plus.login "
    + "https://www.googleapis.com/auth/drive.file";

These represent the permissions that your app is requesting from the user. The scopes requested in this example are documented here:

• https://developers.google.com/+/api/oauth
• https://developers.google.com/drive/android/files