我在我的应用程序中向谷歌注册用户，然后我在那里检索照片URL，电子邮件和显示名称。
问题是profile.getEmail();正在返回/检索两个字符串。一个是电子邮件，另一个是空白。
以下是我注册它们的方式：
public class SignupActivity extends AppCompatActivity {
private static final int RC_SIGN_IN = 1;
GoogleApiClient mGoogleApiClient;
FirebaseAuth mAuth;
TextView appName;
ProgressDialog signinProgressDialog;
CoordinatorLayout coordinatorLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
// Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
// setSupportActionBar(toolbar);
signinProgressDialog = new ProgressDialog(SignupActivity.this);
coordinatorLayout = (CoordinatorLayout) findViewById(R.id.signupCoordinatorLayout);
// Configure Google Sign In
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.o_auth_client_id))
.requestEmail()
.requestProfile()
.requestId()
.build();
// Build a GoogleApiClient with access to the Google Sign-In API and the
// options specified by gso.
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this /* FragmentActivity */, new GoogleApiClient.OnConnectionFailedListener() {
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
} /* OnConnectionFailedListener */)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
mAuth = FirebaseAuth.getInstance();
findViewById(R.id.sign_in_button).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (isNetworkAvailable()) {
signinProgressDialog.setMessage("Signing in...");
signinProgressDialog.show();
signIn();
} else {
Snackbar snackbar = Snackbar
.make(coordinatorLayout, "No internet connection!", Snackbar.LENGTH_LONG);
snackbar.show();
signinProgressDialog.dismiss();
}
}
});
}
private void signIn() {
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
startActivityForResult(signInIntent, RC_SIGN_IN);
}
@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) {
GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
if (result.isSuccess()) {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = result.getSignInAccount();
firebaseAuthWithGoogle(account);
} else {
// Google Sign In failed, update UI appropriately
// ...
}
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d("firebaseAuthWithGoogle", "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) {
Log.d("signin_successful", "signInWithCredential:onComplete:" + task.isSuccessful());
Intent mainActivityIntent = new Intent(SignupActivity.this, MainActivity.class);
mainActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mainActivityIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainActivityIntent);
signinProgressDialog.dismiss();
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Log.w("signin_unsuccessful", "signInWithCredential", task.getException());
Toast.makeText(SignupActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
}
// ...
}
});
}
@Override
public void onBackPressed() {
finish();
super.onBackPressed();
}
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager
= (ConnectivityManager) SignupActivity.this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
}
以下是我检索要点的方法：
public void retrieveUserInfo() {
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
for (UserInfo profile : user.getProviderData()) {
// Id of the provider (ex: google.com)
providerId = profile.getProviderId();
// UID specific to the provider
uid = profile.getUid();
// Name, email address, and profile photo Url
name = profile.getDisplayName();
email = profile.getEmail();
photoUrl = profile.getPhotoUrl().toString();
}
}
}
在这里，当我将电子邮件字符串放在Toast中时，我得到了 2 个 toast，第一个显示电子邮件，第二个是空白的。
我真的不知道这里出了什么问题。
请让我知道。
抱歉，如果问题的格式似乎不正确。我在这里仍然是初学者。
您正在使用for()循环可能会导致问题，一旦它获得字符串而其他时间则没有。
在retrieveUserInfo()中更改代码即可完成工作。
以下是更改的代码：
public void retrieveUserInfo() {
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
// Id of the provider (ex: google.com)
providerId = user.getProviderId();
// UID specific to the provider
uid = user.getUid();
// Name, email address, and profile photo Url
name = user.getDisplayName();
email = user.getEmail();
photoUrl = user.getPhotoUrl().toString();
}
}