问题
I developped an application that uses gmail api to get all the mails from the user. Then I divided this app in a sample (almost empty) and a fragment that does everything, so I can later integrate my fragment easily in my team's project's settings.
Now that my fragment is in the other project, the gmail connexion doesn't work and gives me these errors :
E/Async Task: com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAuthIOException
E/Google log in: failed
I think this error is because the project uses firebase and already have a google-services.json file and mine isn't used. We added the GMail API in the google developper portal and generated a new json file but it doesn't seem to work.
Why does my GMail connexion fails and how can I solve it ?
回答1:
Ok, I managed to get it working.
Looks like when I create credentials keys in the API manager Google console, it doesn't add the SHA1 keys in all the apps of the project in Firebase.
All I had to do (after a week of hard work) was to copy paste the SHA1 from tha app "linked" to the Google API console in the other app
I hope it can help
回答2:
Use this code to integrate gmail login using firebase . If already login it will navigate to homeScreen and if not logined previously it will pop up email to login once sign in clicked.
Add you server_client_id in string.xml used here :
getString(R.string.server_client_id)
Code :
MainActivity.java
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.auth.api.signin.GoogleSignInResult;
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.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;
import smart.works.android.bharat.com.codeplay.ui.homeScreen.CodePlayActivity;
import smart.works.android.bharat.com.codeplay.R;
import smart.works.android.bharat.com.codeplay.Utils.AppConstants;
import smart.works.android.bharat.com.codeplay.Utils.PreferenceUtils;
public class MainActivity extends AppCompatActivity
implements GoogleApiClient.OnConnectionFailedListener, View.OnClickListener {
private static final int RC_SIGN_IN = 124;
private static final String TAG = "MainActivity";
private GoogleApiClient mGoogleApiClient;
private FirebaseAuth mAuth;
private ProgressBar mProgressBar;
private SignInButton mSignInButton;
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
initUi();
setupUi();
}
private void setupUi() {
GoogleSignInOptions gso =
new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN).requestIdToken(
getString(R.string.server_client_id)).requestEmail().build();
mGoogleApiClient =
new GoogleApiClient.Builder(this).enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
// Set the dimensions of the sign-in button.
mSignInButton = (SignInButton) findViewById(R.id.sign_in_button);
mSignInButton.setSize(SignInButton.SIZE_STANDARD);
findViewById(R.id.sign_in_button).setOnClickListener(this);
mAuth = FirebaseAuth.getInstance();
}
private void initUi() {
mProgressBar = (ProgressBar) findViewById(R.id.sign_in_progress);
mSignInButton = (SignInButton) findViewById(R.id.sign_in_button);
}
@Override public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override public void onClick(View v) {
switch (v.getId()) {
case R.id.sign_in_button:
signIn();
break;
}
}
private void signIn() {
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
startActivityForResult(signInIntent, RC_SIGN_IN);
}
private void showProgress() {
mProgressBar.setVisibility(View.VISIBLE);
mSignInButton.setEnabled(false);
}
private void cancelProgress() {
mProgressBar.setVisibility(View.GONE);
mSignInButton.setEnabled(true);
}
@Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
showProgress();
GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
handleSignInResult(result);
}
}
private void handleSignInResult(GoogleSignInResult result) {
Log.d(TAG, "handleSignInResult:" + result.isSuccess());
if (result.isSuccess()) {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = result.getSignInAccount();
firebaseAuthWithGoogle(account);
//updateUI(true);
} else {
cancelProgress();
Toast.makeText(MainActivity.this, "sign in failed ! Try Again ", Toast.LENGTH_SHORT).show();
// Signed out, show unauthenticated UI.
//updateUI(false);
}
}
@Override public void onStart() {
super.onStart();
// Check if user is signed in (non-null) and update UI accordingly.
FirebaseUser currentUser = mAuth.getCurrentUser();
if (currentUser != null) {
forwardToHomeScreen(currentUser);
}
//updateUI(currentUser);
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override public void onComplete(@NonNull Task<AuthResult> task) {
cancelProgress();
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
Log.d(TAG, "signInWithCredential:success");
FirebaseUser user = mAuth.getCurrentUser();
forwardToHomeScreen(user);
} else {
// If sign in fails, display a message to the user.
Log.w(TAG, "signInWithCredential:failure", task.getException());
Toast.makeText(MainActivity.this, "Authentication failed.", Toast.LENGTH_SHORT)
.show();
//updateUI(null);
}
// ...
}
});
}
private void forwardToHomeScreen(FirebaseUser user) {
PreferenceUtils preferenceUtils = new PreferenceUtils(this);
preferenceUtils.getPrefEditor().putString(AppConstants.USER_ID, user.getUid()).apply();
Intent i = new Intent(this, CodePlayActivity.class);
i.putExtra(AppConstants.USER_NAME, user.getDisplayName());
i.putExtra(AppConstants.USER_EMAIL, user.getEmail());
i.setData(user.getPhotoUrl());
startActivity(i);
finish();
}
}
actvity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/nav_bg"
android:orientation="vertical"
>
<ImageView
android:id="@+id/icon"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:layout_centerInParent="true"
android:layout_marginTop="100dp"
android:contentDescription="@string/app_icon"
android:src="@mipmap/ic_launcher"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/icon"
android:layout_centerInParent="true"
android:layout_marginBottom="60dp"
android:text="@string/app_name"
android:textColor="#FFFFFF"
android:textSize="16sp"
android:textStyle="bold"
/>
<ProgressBar
android:id="@+id/sign_in_progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:indeterminate="true"
android:visibility="gone"
/>
<com.google.android.gms.common.SignInButton
android:id="@+id/sign_in_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
android:layout_marginBottom="100dp"
/>
</RelativeLayout>
来源：https://stackoverflow.com/questions/45147320/integrating-gmail-connection-in-firebase-project