在 startIntentSenderForResult 之后未调用 OnActivityResult

Question

我正在使用启动页面“使用 Google 登录”。当用户有多个帐户时...在他们选择了他们希望登录的帐户后，我正在尝试启动应用程序的主要活动，但由于某种原因，我的片段中从未调用过 onActivityResult。

我是 Activity，我调用 onActivityResult 并让它调用 super 以便 Fragment 可以处理它，但它永远不会触发。

有什么建议吗？

这是有问题的片段：

package com.garciaericn.goodeats.login;

import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.garciaericn.goodeats.R;
import com.garciaericn.goodeats.helpers.CheckConnection;
import com.garciaericn.goodeats.main.FavoritesActivity;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.plus.Plus;

public class LoginFragment extends Fragment implements View.OnClickListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    public static final String TAG = "com.garciaericn.goodeats.login.LoginFragment.TAG";

    /* Request code used to invoke sign in user interactions. */
    private static final int RC_SIGN_IN = 0;
    private static final int RC_LOGGED_IN = 1034553;
    public static final int RC_SIGN_OUT = 34458392;
    /* Client used to interact with Google APIs. */
    private GoogleApiClient mGoogleApiClient;
    /* A flag indicating that a PendingIntent is in progress and prevents
     * us from starting further intents.
     */
    private boolean mIntentInProgress;
    /* Store the connection result from onConnectionFailed callbacks so that we can
     * resolve them when the user clicks sign-in.
     */
    private ConnectionResult mConnectionResult;
    private boolean mSignInClicked;
    private boolean mSignedIn;
    private CheckConnection checkConnection;

    public LoginFragment() {
    }

    public static LoginFragment getInstance() {
        return new LoginFragment();
    }

    private void signOut() {
        if (mGoogleApiClient.isConnected()) {
            Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
            mGoogleApiClient.disconnect();
            mGoogleApiClient.connect();
            mIntentInProgress = false;
            mSignInClicked = false;
        }
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        checkConnection = new CheckConnection(getActivity());
        setHasOptionsMenu(true);

        mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(Plus.API)
                .addScope(Plus.SCOPE_PLUS_LOGIN)
                .build();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_login, container, false);

        SignInButton signInButton = (SignInButton) view.findViewById(R.id.g_plus_login);
        signInButton.setSize(SignInButton.SIZE_WIDE);
        signInButton.setOnClickListener(this);

        return view;
    }

    @Override
    public void onStart() {
        super.onStart();
        mGoogleApiClient.connect();
    }

    @Override
    public void onStop() {
        super.onStop();
        if (mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_sign_out:
                if (mGoogleApiClient.isConnected()) {
                    Plus.AccountApi.clearDefaultAccount(mGoogleApiClient);
                    mGoogleApiClient.disconnect();
                    mGoogleApiClient.connect();
                }
                return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onClick(View v) {
        checkConnection.isConnected();
        switch (v.getId()) {
            case R.id.g_plus_login:
                if (!mGoogleApiClient.isConnected()) {
                    mSignInClicked = true;
                    resolveSignInError();
                }
                break;
            default:
                // If default action is needed.
                break;
        }
    }

    @Override
    public void onConnected(Bundle bundle) {
        mSignInClicked = false;
        mSignedIn = true;
        // User is connected


        String accountName = Plus.AccountApi.getAccountName(mGoogleApiClient);
        Toast.makeText(getActivity(), accountName, Toast.LENGTH_SHORT).show();
        //        String accountID = GoogleAuthUtil.getAccountId(getActivity(), accountName);
        //        try {
        //            accountID = GoogleAuthUtil.getAccountId(getActivity().getApplicationContext(),accountName);
        //        } catch (GoogleAuthException e) {
        //            e.printStackTrace();
        //        } catch (IOException e) {
        //            e.printStackTrace();
        //        }

        //        if (accountID != null) {
        //            // TODO: createLocalAccount() = Store account name and id with DB of restaurants
        //        }


        // Launch main activity
        Intent intent = new Intent(getActivity(), FavoritesActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }

    @Override
    public void onConnectionSuspended(int i) {
        mGoogleApiClient.connect();
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        if (!mIntentInProgress) {
            // Store the ConnectionResult so that we can use it later when the user clicks
            // 'sign-in'.
            mConnectionResult = connectionResult;

            if (mSignInClicked) {
                resolveSignInError();
            }

        }
        checkConnection.isConnected();
        //        if (!checkConnection.isConnected()) {
        //            Toast.makeText(getActivity(), "No network connection", Toast.LENGTH_SHORT).show();
        //        }

    }

    public void resolveSignInError() {
        if (mConnectionResult.hasResolution()) {
            try {
                mIntentInProgress = true;
                getActivity().startIntentSenderForResult(mConnectionResult.getResolution().getIntentSender(), RC_SIGN_IN, null, 0, 0, 0);
            } catch (IntentSender.SendIntentException e) {
                // The intent was canceled before it was sent.  Return to the default
                // state and attempt to connect to get an updated ConnectionResult.
                mIntentInProgress = false;
                mGoogleApiClient.connect();
            }
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == RC_SIGN_IN) {
            if (resultCode != Activity.RESULT_OK) {
                mSignInClicked = false;
            }

            mIntentInProgress = false;

            if (!mGoogleApiClient.isConnected()) {
                mGoogleApiClient.connect();
            }
        } else if (requestCode == RC_LOGGED_IN) {
            if (resultCode == RC_SIGN_OUT) {
                signOut();
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
}

Answer 1

关键是在第一个活动中调用下面的方法。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
}

Answer 2

在你的外部活动中添加这个：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.change_to_your_id);
  fragment.onActivityResult(requestCode, resultCode, data);
}

Answer 3

要正确解决此问题，您可以使用已经准备好的解决方案accountPicker。
但是 - 如果您想设计自己的解决方案 - 一个想法是开始您的第二个活动（显然是从第一个活动开始）：

Intent intent = this.getIntent();
intent.putExtra(... /* some code that will control second activity */
startActivityForResult(intent, request_code);

然后当活动完成所有它必须做的事情时你允许它返回：

Intent intent = this.getIntent();
intent.putExtra(... /* all needed results to return */ );
this.setResult(RESULT_OK, intent);
finish();

最后是您的第一个活动，然后在其 onActivityResult 中获得结果。