您好，我的 google 连接有问题。每次执行该代码时，它都会进入 catch 处。我不知道为什么。我按照Google教程中的步骤进行操作，并在堆栈上看到了许多与该问题相关的问题，但仍然无法帮助我解决这个问题。当代码运行时，它会进入捕获并显示我制作的 toast 。 “错误而..”。
它是这样的。我发布了验证的完整代码，以便每个人都可以分析它并在可能的情况下给我一个解决方案。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
mGoogleSignInClient= GoogleSignIn.getClient(this,gso);
signInButton=(SignInButton)findViewById(R.id.googleButton);
signInButton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
});
//pour google
mAuthStateListener=new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser mFireBaseUser=mFirebaseAuth.getCurrentUser();
if(mFireBaseUser != null){
Toast.makeText(LoginActivity.this,"you are logged in",Toast.LENGTH_SHORT).show();
Intent i= new Intent(LoginActivity.this, PrayersEvents.class);
startActivity(i);
}
else{
Toast.makeText(LoginActivity.this,"please login",Toast.LENGTH_SHORT).show();
}
}
};
btnSignIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email=emailId.getText().toString();
String pwd=password.getText().toString();
if (email.isEmpty()) {
emailId.setError("Please enter email");
emailId.requestFocus();
}
else if(pwd.isEmpty()){
password.setError("Please enter your password");
password.requestFocus();
}
else if(email.isEmpty() || pwd.isEmpty()){
Toast.makeText(LoginActivity.this,"Fields are empty!",Toast.LENGTH_SHORT).show();
}
else if(!(email.isEmpty() && pwd.isEmpty())){
mFirebaseAuth.signInWithEmailAndPassword(email,pwd).addOnCompleteListener(LoginActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(!task.isSuccessful()){
Toast.makeText(LoginActivity.this,"Login error!",Toast.LENGTH_SHORT).show();
}
else{
Intent intoHome=new Intent(LoginActivity.this, PrayersEvents.class);
startActivity(intoHome);
}
}
});
}
else{
Toast.makeText(LoginActivity.this,"Error ocurred!",Toast.LENGTH_SHORT).show();
}
}
});
tvSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intoSignUp=new Intent(LoginActivity.this,MainActivity.class);
startActivity(intoSignUp);
}
});
}
@Override
protected void onStart() {
super.onStart();
GoogleSignInAccount account=GoogleSignIn.getLastSignedInAccount(this);
if(account !=null){
startActivity(new Intent(LoginActivity.this, CreateEvent.class));
}
}
@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) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
Log.d("MON_TAG", account.toString());
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
Toast.makeText(getApplicationContext(),"error while logging in",Toast.LENGTH_SHORT).show();
Log.w("errorMsg","Google sign in failed", e);
// ...
}
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {//acct means account
Log.d("MON_TAG", "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mFirebaseAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
Log.d("MON_TAG", "signInWithCredential:success");
FirebaseUser user = mFirebaseAuth.getCurrentUser();
startActivity(new Intent(LoginActivity.this, CreateEvent.class));
Toast.makeText(getApplicationContext(),"You are now connected",Toast.LENGTH_SHORT).show();
} else {
GoogleSignInAccount account=GoogleSignIn.getLastSignedInAccount(getApplicationContext());
if(account !=null){
startActivity(new Intent(LoginActivity.this, CreateEvent.class));
}
// If sign in fails, display a message to the user.
Toast.makeText(getApplicationContext(),"Could not log in user",Toast.LENGTH_SHORT).show();
}
}
});
}
最佳答案
我认为您没有实例化 GoogleApiClient 对象..
尝试这个代码..它对我有用..
//a constant for detecting the login intent result
private static final int RC_SIGN_IN = 234;
//Tag for the logs optional
private static final String TAG = "YoussefIslem";
//creating a GoogleSignInClient object
GoogleSignInClient mGoogleSignInClient;
GoogleApiClient googleApiClient;
CallbackManager mCallbackManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAuth = FirebaseAuth.getInstance();
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.web_client_id))
.requestEmail()
.build();
googleApiClient =new GoogleApiClient.Builder(this)
.enableAutoManage(this,this)
.addApi(Auth.GOOGLE_SIGN_IN_API,gso)
.build();
//Then we will get the GoogleSignInClient object from GoogleSignIn class
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
findViewById(R.id.googleContinue).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signIn();
}
});
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
//getting the auth credential
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
//Now using firebase we are signing in the user here
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
Log.d(TAG, "signInWithCredential:success");
FirebaseUser user = mAuth.getCurrentUser();
Toast.makeText(MainActivity.this, "User Signed In", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(MainActivity.this, HomeActivity.class);
startActivity(intent);
finish();
} 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();
}
// ...
}
});
}
//this method is called on click
private void signIn() {
//getting the google signin intent
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
googleApiClient.clearDefaultAccountAndReconnect();
//starting the activity for result
startActivityForResult(signInIntent, RC_SIGN_IN);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//if the requestCode is the Google Sign In code that we defined at starting
if (requestCode == RC_SIGN_IN) {
//Getting the GoogleSignIn Task
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
//Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
//authenticating with firebase
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
Toast.makeText(MainActivity.this,"I'm here"+ e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}
关于java - 使用 Android 登录 Google 连接时出现错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62004008/