Java 使用不同帐户的Google SigIn无法正常工作
#使用google登录fire Base的简单登录应用程序# #问题---当我第一次尝试登录谷歌时,它会显示弹出窗口以选择谷歌帐户,登录和注销返回到我的登录活动,如果我尝试第二次登录,默认情况下它不会显示弹出窗口,它会直接登录到我以前的帐户。。。我也试过撤销方法。。但是我的应用程序在我使用它时崩溃了 谷歌登录活动:Java 使用不同帐户的Google SigIn无法正常工作,java,Java,#使用google登录fire Base的简单登录应用程序# #问题---当我第一次尝试登录谷歌时,它会显示弹出窗口以选择谷歌帐户,登录和注销返回到我的登录活动,如果我尝试第二次登录,默认情况下它不会显示弹出窗口,它会直接登录到我以前的帐户。。。我也试过撤销方法。。但是我的应用程序在我使用它时崩溃了 谷歌登录活动: package com.example.jbasnews; import android.content.Intent; import android.os.Bundle; imp
package com.example.jbasnews;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
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;
public class userLogin extends AppCompatActivity {
Button NewUser ;
private GoogleSignInClient mGoogleSignInClient;
private final static int RC_SIGN_IN = 123;
private FirebaseAuth mAuth;
@Override
protected void onStart() {
super.onStart();
FirebaseUser user = mAuth.getCurrentUser();
if(user!=null){
Intent intent = new Intent(getApplicationContext(),userProfile.class);
startActivity(intent);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_user_login);
mAuth = FirebaseAuth.getInstance();
createRequest();
findViewById(R.id.UserSignInGoogle).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signIn();
}
});
NewUser = findViewById(R.id.btnNewUser);
NewUser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(userLogin.this, UserSignUp.class);
startActivity(intent);
}
});
}
private void createRequest() {
// Configure Google Sign In
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
// Build a GoogleSignInClient with the options specified by gso.
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
}
private void signIn() {
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
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) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
// ...
Toast.makeText(this,e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.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
FirebaseUser user = mAuth.getCurrentUser();
Intent intent = new Intent(getApplicationContext(), userProfile.class);
startActivity(intent);
} else {
Toast.makeText(userLogin.this, "Sorry auth failed.", Toast.LENGTH_SHORT).show();
}
// ...
}
});
}
}
User profile Activity :
package com.example.jbasnews;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.firebase.auth.FirebaseAuth;
public class userProfile extends AppCompatActivity {
TextView UserName, UserMail;
Button logout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_profile2);
logout = findViewById(R.id.UserLogOut);
UserName = findViewById(R.id.tvUserName);
UserMail= findViewById(R.id.tvUserMail);
GoogleSignInAccount signInAccount = GoogleSignIn.getLastSignedInAccount(this);
if(signInAccount != null){
UserName.setText(signInAccount.getDisplayName());
UserMail.setText(signInAccount.getEmail());
}
logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
FirebaseAuth.getInstance().signOut();
Intent intent = new Intent(getApplicationContext(),userLogin.class);
startActivity(intent);
}
});
}
}
package com.example.jbasnews;
导入android.content.Intent;
导入android.os.Bundle;
导入android.view.view;
导入android.view.WindowManager;
导入android.widget.Button;
导入android.widget.Toast;
导入androidx.annotation.NonNull;
导入androidx.appcompat.app.appcompat活动;
导入com.google.android.gms.auth.api.signin.GoogleSignIn;
导入com.google.android.gms.auth.api.signin.GoogleSignInAccount;
导入com.google.android.gms.auth.api.signin.GoogleSignInClient;
导入com.google.android.gms.auth.api.signin.GoogleSignInOptions;
导入com.google.android.gms.common.api.ApiException;
导入com.google.android.gms.tasks.OnCompleteListener;
导入com.google.android.gms.tasks.Task;
导入com.google.firebase.auth.AuthCredential;
导入com.google.firebase.auth.AuthResult;
导入com.google.firebase.auth.FirebaseAuth;
导入com.google.firebase.auth.FirebaseUser;
导入com.google.firebase.auth.GoogleAuthProvider;
公共类userLogin扩展了AppCompatActivity{
按钮新建用户;
私人谷歌签名客户端mGoogleSignInClient;
专用最终静态int RC_SIGN_IN=123;
私人消防队;
@凌驾
受保护的void onStart(){
super.onStart();
FirebaseUser=mAuth.getCurrentUser();
如果(用户!=null){
Intent Intent=新的Intent(getApplicationContext(),userProfile.class);
星触觉(意向);
}
}
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_全屏,WindowManager.LayoutParams.FLAG_全屏);
setContentView(R.layout.activity\u user\u login);
mAuth=FirebaseAuth.getInstance();
createRequest();
findViewById(R.id.UserSigningLogle).setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
签名();
}
});
NewUser=findViewById(R.id.btnNewUser);
NewUser.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
Intent Intent=新的Intent(userLogin.this、UserSignUp.class);
星触觉(意向);
}
});
}
私有void createRequest(){
//配置谷歌登录
GoogleSignenOptions gso=新建GoogleSignenOptions.Builder(GoogleSignenOptions.DEFAULT\u登录)
.requestIdToken(getString(R.string.default\u web\u client\u id))
.requestEmail()
.build();
//使用gso指定的选项构建GoogleSignInClient。
mGoogleSignInClient=GoogleSignIn.getClient(this,gso);
}
私人无效签名(){
Intent-signinint=mGoogleSignInClient.getsigninint();
startActivityForResult(签名、注册);
}
@凌驾
ActivityResult上的公共void(int请求代码、int结果代码、意图数据){
super.onActivityResult(请求代码、结果代码、数据);
//从GoogleSignInApi.getsigninent(…)启动Intent返回的结果;
if(requestCode==RC\u登录){
Task Task=GoogleSignIn.GetSignedAccountFromIntent(数据);
试一试{
//Google登录成功,通过Firebase验证
GoogleSignInAccount account=task.getResult(ApiException.class);
firebaseAuthWithGoogle(账户);
}捕获(APIE){
//Google登录失败,请适当更新UI
// ...
Toast.makeText(this,e.getMessage(),Toast.LENGTH_SHORT.show();
}
}
}
私有void firebaseAuthWithGoogle(谷歌签名帐户){
AuthCredential credential=GoogleAuthProvider.getCredential(acct.getIdToken(),null);
mAuth.SIGNWITH凭证(凭证)
.addOnCompleteListener(这是新的OnCompleteListener(){
@凌驾
未完成的公共void(@NonNull任务){
if(task.issusccessful()){
//登录成功,使用登录用户的信息更新UI
FirebaseUser=mAuth.getCurrentUser();
Intent Intent=新的Intent(getApplicationContext(),userProfile.class);
星触觉(意向);
}否则{
Toast.makeText(userLogin.this,“抱歉身份验证失败”,Toast.LENGTH_SHORT.show();
}
// ...
}
});
}
}
用户配置文件活动:
包com.example.jbasnews;
导入android.content.Intent;
导入android.os.Bundle;
导入android.view.view;
导入android.widget.Button;
导入android.widget.TextView;
导入androidx.appcompat.app.appcompat活动;
导入com.google.android.gms.auth.api.signin.GoogleSignIn;
导入com.google.android.gms.auth.api.signin.GoogleSignInAccount;
导入com.google.firebase.auth.FirebaseAuth;
公共类userProfile扩展了AppCompatActivity{
TextView用户名,UserMail;
按钮注销;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u user\u profile2);
注销=findViewById(R.id.UserLo