Code snippet for dependencies in App level Gradle:: build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.allcodingtutorials.googlesignin"
minSdkVersion 19
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.3.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation 'com.google.android.gms:play-services-auth:19.0.0'
implementation 'com.github.bumptech.glide:glide:4.12.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
}Code snippet for Manifest:: AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.allcodingtutorials.googlesignin">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".ProfileActivity"></activity>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>Codes snippet for activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click to Sign-in"
android:layout_centerInParent="true"
android:textSize="24dp"
/>
<com.google.android.gms.common.SignInButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/signin"
android:layout_below="@id/text"/>
</RelativeLayout>Codes snippet for activity_profile.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ProfileActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:id="@+id/profileimage"
android:layout_width="100dp"
android:layout_height="100dp"/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"/>
<TextView
android:id="@+id/firstname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"/>
<TextView
android:id="@+id/secondname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"/>
<TextView
android:id="@+id/email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"/>
<TextView
android:id="@+id/userID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"/>
<Button
android:id="@+id/signout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Sign-out"
android:textSize="24dp"
android:layout_marginTop="30dp"/>
</LinearLayout>
</RelativeLayout>Code snippet for MainActivity.java
package com.allcodingtutorials.googlesignin;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
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.SignInButton;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.Task;
public class MainActivity extends AppCompatActivity {
SignInButton signInButton;
GoogleSignInClient mGoogleSignInClient;
static final int RC_SIGN_IN = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
signInButton = (SignInButton) findViewById(R.id.signin);
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
signInButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.signin:
signIn();
break;
}}}); }
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);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
handleSignInResult(task);
}
}
private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
try {
GoogleSignInAccount account = completedTask.getResult(ApiException.class);
Toast.makeText(this, "Sign-in Successful", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(this, ProfileActivity.class);
startActivity(intent);
} catch (ApiException e) {
Log.w("Error", "signInResult:failed code=" + e.getStatusCode());
}
}
@Override
protected void onStart() {
super.onStart();
GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(this);
if(account!=null)
{
Toast.makeText(this, "User already Signed-in", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getApplicationContext(),ProfileActivity.class);
startActivity(intent);
}
}
}Code snippet for ProfileActivity.java
package com.allcodingtutorials.googlesignin;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.Manifest;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.bumptech.glide.Glide;
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.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
public class ProfileActivity extends AppCompatActivity {
Button signout;
GoogleSignInClient mGoogleSignInClient;
TextView userName, userFirstName, userSecondName, userEmail, userId;
ImageView profileImage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
userName = (TextView) findViewById(R.id.name);
userFirstName = (TextView) findViewById(R.id.firstname);
userSecondName = (TextView) findViewById(R.id.secondname);
userEmail= (TextView) findViewById(R.id.email);
userId = (TextView) findViewById(R.id.userID);
profileImage = (ImageView) findViewById(R.id.profileimage);
signout = (Button) findViewById(R.id.signout);
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(this);
if (account != null) {
String personName = account.getDisplayName();
String personGivenName = account.getGivenName();
String personFamilyName = account.getFamilyName();
String personEmail = account.getEmail();
String personId = account.getId();
Uri personPhoto = account.getPhotoUrl();
userName.setText(personName);
userFirstName.setText(personGivenName);
userSecondName.setText(personFamilyName);
userEmail.setText(personEmail);
userId.setText(personId);
Glide.with(this).load(personPhoto).into(profileImage);
}
signout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view)
{
switch (view.getId())
{
case R.id.signout:
signOut();
break;
} } });}
private void signOut() {
mGoogleSignInClient.signOut()
.addOnCompleteListener(this, new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
Toast.makeText(ProfileActivity.this, "User Signed Out Successfully", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
} }); }}That's all...
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