我在我的項目中實施了Google Signin。這是代碼。
GoogleLoginActivity.java
import android.content.Intent;
import android.support.annotation.NonNull;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
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.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
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 in.invis.organickerala.R;
import in.invis.organickerala.activities.BaseActivity;
public class GoogleLoginActivity extends BaseActivity implements
GoogleApiClient.OnConnectionFailedListener,
View.OnClickListener {
private static final String TAG = "GoogleActivity";
private static final int RC_SIGN_IN = 9001;
// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]
// [START declare_auth_listener]
private FirebaseAuth.AuthStateListener mAuthListener;
// [END declare_auth_listener]
private GoogleApiClient mGoogleApiClient;
private TextView mStatusTextView;
private TextView mDetailTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_google);
// Views
mStatusTextView = (TextView) findViewById(R.id.status);
mDetailTextView = (TextView) findViewById(R.id.detail);
// Button listeners
findViewById(R.id.login_with_google).setOnClickListener(this);
findViewById(R.id.sign_out_button).setOnClickListener(this);
// [START config_signin]
// Configure Google Sign In
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
// [END config_signin]
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
// [START initialize_auth]
mAuth = FirebaseAuth.getInstance();
// [END initialize_auth]
// [START auth_state_listener]
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
} else {
// User is signed out
Log.d(TAG, "onAuthStateChanged:signed_out");
}
// [START_EXCLUDE]
updateUI(user);
// [END_EXCLUDE]
}
};
// [END auth_state_listener]
}
// [START on_start_add_listener]
@Override
public void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
// [END on_start_add_listener]
// [START on_stop_remove_listener]
@Override
public void onStop() {
super.onStop();
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
}
// [END on_stop_remove_listener]
// [START onactivityresult]
@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
// [START_EXCLUDE]
updateUI(null);
// [END_EXCLUDE]
}
}
}
// [END onactivityresult]
// [START auth_with_google]
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
// [START_EXCLUDE silent]
showProgressDialog();
// [END_EXCLUDE]
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(TAG, "signInWithCredential:onComplete:" + task.isSuccessful());
// 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(TAG, "signInWithCredential", task.getException());
Toast.makeText(GoogleLoginActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
}
// [START_EXCLUDE]
hideProgressDialog();
// [END_EXCLUDE]
}
});
}
// [END auth_with_google]
// [START signin]
private void signIn() {
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
startActivityForResult(signInIntent, RC_SIGN_IN);
}
// [END signin]
private void signOut() {
// Firebase sign out
mAuth.signOut();
// Google sign out
Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
updateUI(null);
}
});
}
private void revokeAccess() {
// Firebase sign out
mAuth.signOut();
// Google revoke access
Auth.GoogleSignInApi.revokeAccess(mGoogleApiClient).setResultCallback(
new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
updateUI(null);
}
});
}
private void updateUI(FirebaseUser user) {
hideProgressDialog();
if (user != null) {
mStatusTextView.setText(getString(R.string.google_status_fmt, user.getEmail()));
mDetailTextView.setText(getString(R.string.firebase_status_fmt, user.getUid()));
} else {
mStatusTextView.setText(R.string.signed_out);
mDetailTextView.setText(null);
findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
findViewById(R.id.sign_out_and_disconnect).setVisibility(View.GONE);
}
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
// An unresolvable error has occurred and Google APIs (including Sign-In) will not
// be available.
Log.d(TAG, "onConnectionFailed:" + connectionResult);
Toast.makeText(this, "Google Play Services error.", Toast.LENGTH_SHORT).show();
}
@Override
public void onClick(View v) {
int i = v.getId();
if (i == R.id.sign_in_button) {
signIn();
} else if (i == R.id.sign_out_button) {
signOut();
} else if (i == R.id.disconnect_button) {
revokeAccess();
}
}
}
BaseActivity.java
import android.app.ProgressDialog;
import android.support.annotation.VisibleForTesting;
import android.support.v7.app.AppCompatActivity;
import in.invis.organickerala.R;
public class BaseActivity extends AppCompatActivity {
@VisibleForTesting
public ProgressDialog mProgressDialog;
public void showProgressDialog() {
if (mProgressDialog == null) {
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setMessage(getString(R.string.loading));
mProgressDialog.setIndeterminate(true);
}
mProgressDialog.show();
}
public void hideProgressDialog() {
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
}
@Override
public void onStop() {
super.onStop();
hideProgressDialog();
}
}
**activity_google.xml**
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/grey_100"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView
style="@style/ThemeOverlay.FirebaseIcon"
android:id="@+id/google_icon"
android:contentDescription="@string/desc_firebase_lockup"
android:src="@drawable/firebase_lockup_400"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="@dimen/title_bottom_margin"
android:text="@string/google_title_text"
android:theme="@style/ThemeOverlay.MyTitleText" />
<TextView
android:id="@+id/status"
style="@style/ThemeOverlay.MyTextDetail"
android:text="@string/signed_out" />
<TextView
android:id="@+id/detail"
style="@style/ThemeOverlay.MyTextDetail"
tools:text="Firebase User ID: 123456789abc" />
</LinearLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/grey_300">
<com.google.android.gms.common.SignInButton
android:id="@+id/sign_in_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:visibility="visible"
tools:visibility="gone" />
<LinearLayout
android:id="@+id/sign_out_and_disconnect"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="horizontal"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:visibility="gone"
tools:visibility="visible">
<Button
android:id="@+id/sign_out_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/sign_out"
android:theme="@style/ThemeOverlay.MyDarkButton" />
<Button
android:id="@+id/disconnect_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/disconnect"
android:theme="@style/ThemeOverlay.MyDarkButton" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
這個轉變發展電腦時發生在我身上。新的調試密鑰已創建，導致身份驗證失敗。確保在Firebase中添加了所有SHA1指紋。討厭的「錯誤」追蹤... – Nelson