Android Guide: Login With Facebook In Android Example

Full Source Code Download Here:
https://github.com/sanjaymangaroliya/LoginWithFacebook

MainActivity

package com.sanjay.loginwithfacebook;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.facebook.AccessToken;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;
import com.facebook.HttpMethod;
import com.facebook.login.LoginManager;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;

public class MainActivity extends AppCompatActivity {

private Button btn_sign_in, btn_logout;
private ImageView img_profile;
private TextView tv_info;
private LoginButton loginButton;
private CallbackManager callbackManager;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//Toolbar
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);

callbackManager = CallbackManager.Factory.create();

initUI();
}

private void initUI() {
TextView tvTitle = findViewById(R.id.tv_title);
tvTitle.setText(getResources().getString(R.string.app_name));
btn_sign_in = findViewById(R.id.btn_sign_in);
btn_logout = findViewById(R.id.btn_logout);
img_profile = findViewById(R.id.img_profile);
tv_info = findViewById(R.id.tv_info);
loginButton = findViewById(R.id.login_button);

//Default Login Button
/* loginButton.setReadPermissions("public_profile", "email");
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Utils.showToast(MainActivity.this, "Login Successfully.");
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
getUserData(object);
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id, first_name, last_name, email, gender, birthday, location");
request.setParameters(parameters);
request.executeAsync();
}

@Override
public void onCancel() {
Utils.showToast(MainActivity.this, "Login Cancel.");
updateUI(false);
}

@Override
public void onError(FacebookException exception) {
Utils.showToast(MainActivity.this, "Login Error.");
updateUI(false);
}
});*/
}

//Custom Login Button
public void onClickSignIn(View view) {
if (Utils.isNetworkAvailable(this)) {
LoginManager.getInstance().logInWithReadPermissions(
this, Arrays.asList("public_profile", "email"));

LoginManager.getInstance().registerCallback(
callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Utils.showToast(MainActivity.this, "Login Successfully.");
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
getUserData(object);
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id, first_name, last_name, email, gender, birthday, location");
request.setParameters(parameters);
request.executeAsync();
}

@Override
public void onCancel() {
Utils.showToast(MainActivity.this, "Login Cancel.");
updateUI(false);
}

@Override
public void onError(FacebookException e) {
Utils.showToast(MainActivity.this, "Login Error.");
updateUI(false);
}
});
} else {
Utils.showAlertDialog(this, getResources().getString(R.string.alert)
, getResources().getString(R.string.internet_error));
}
}

//Get User Profile Information
private void getUserData(JSONObject object) {
try {
updateUI(true);
StringBuilder stringBuilder = new StringBuilder();
if (object.has("first_name")) {
stringBuilder.append("First Name: " + object.getString("first_name"));
}
if (object.has("last_name")) {
stringBuilder.append("\nLast Name: " + object.getString("last_name"));
}
if (object.has("email")) {
stringBuilder.append("\nEmail: " + object.getString("email"));
}
if (object.has("gender")) {
stringBuilder.append("\nGender: " + object.getString("gender"));
}
if (object.has("birthday")) {
stringBuilder.append("\nBirthday: " + object.getString("birthday"));
}
if (object.has("location")) {
stringBuilder.append("\nLocation: " + object.getJSONObject("location").getString("name"));
}
tv_info.setText(stringBuilder.toString());

//Profile Picture
String id = object.getString("id");
try {
URL profile_pic = new URL("https://graph.facebook.com/"
+ id + "/picture?");
Glide.with(getApplicationContext()).load(profile_pic.toString())
.thumbnail(0.5f)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(img_profile);
} catch (MalformedURLException e) {
e.printStackTrace();
}
} catch (JSONException e) {
e.printStackTrace();
}
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
callbackManager.onActivityResult(requestCode, resultCode, data);
super.onActivityResult(requestCode, resultCode, data);
}

//UpDate UI
private void updateUI(boolean isSignedIn) {
if (isSignedIn) {
btn_sign_in.setVisibility(View.GONE);
btn_logout.setVisibility(View.VISIBLE);
img_profile.setVisibility(View.VISIBLE);
tv_info.setVisibility(View.VISIBLE);
} else {
btn_sign_in.setVisibility(View.VISIBLE);
btn_logout.setVisibility(View.GONE);
img_profile.setVisibility(View.GONE);
tv_info.setVisibility(View.GONE);
}
}

//Facebook Logout
public void onClickLogout(View view) {
if (AccessToken.getCurrentAccessToken() == null) {
updateUI(false);
return;
}
new GraphRequest(AccessToken.getCurrentAccessToken(),
"/me/permissions/", null,
HttpMethod.DELETE, new GraphRequest
.Callback() {
@Override
public void onCompleted(GraphResponse graphResponse) {
LoginManager.getInstance().logOut();
Utils.showToast(MainActivity.this, "Logout Successfully.");
updateUI(false);
}
}).executeAsync();
}
}

Utils.java

package com.sanjay.loginwithfacebook;
import android.content.Context;
import android.content.DialogInterface;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.support.v7.app.AlertDialog;
import android.view.Gravity;
import android.widget.Toast;

public class Utils {

public static boolean isNetworkAvailable(Context context) {
if (context == null) {
return false;
}
ConnectivityManager cm =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null &&
activeNetwork.isConnectedOrConnecting();
return isConnected;
}

public static void showToast(Context activity, String strMsg) {
Toast toast = Toast.makeText(activity, strMsg, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}

public static void showAlertDialog(Context context, String title, String msg) {
AlertDialog.Builder adb = new AlertDialog.Builder(context);
adb.setTitle(title);
adb.setMessage(msg);
adb.setCancelable(false);
adb.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
adb.create().show();
}

public static boolean isNotEmptyString(String str) {
if (str != "" && str != null && str.trim().length() > 0
&& !str.equalsIgnoreCase("null")) {
return true;
}
return false;
}

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@color/white"

android:fitsSystemWindows="true">

<android.support.v4.widget.NestedScrollView

android:id="@+id/nested_scrollview"

android:layout_width="match_parent"

android:layout_height="match_parent"

app:layout_behavior="@string/appbar_scrolling_view_behavior">

<RelativeLayout

android:id="@+id/rl_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_margin="10dp">

<com.facebook.login.widget.LoginButton

android:id="@+id/login_button"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerHorizontal="true"

android:layout_marginTop="20dp"

android:visibility="gone" />

<Button

android:id="@+id/btn_sign_in"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp"

android:background="@color/colorPrimary"

android:gravity="center"

android:onClick="onClickSignIn"

android:text="@string/sign_in"

android:textColor="@color/white"

android:visibility="visible" />

<Button

android:id="@+id/btn_logout"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_below="@+id/btn_sign_in"

android:layout_marginTop="20dp"

android:background="@color/colorPrimary"

android:gravity="center"

android:onClick="onClickLogout"

android:text="@string/logout"

android:textColor="@color/white"

android:visibility="gone" />

<ImageView

android:id="@+id/img_profile"

android:layout_width="80dp"

android:layout_height="80dp"

android:layout_alignParentLeft="true"

android:layout_below="@+id/btn_logout"

android:layout_marginTop="20dp"

android:src="@mipmap/ic_launcher"

android:visibility="gone" />

<TextView

android:id="@+id/tv_info"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_below="@+id/btn_logout"

android:layout_marginLeft="10dp"

android:layout_marginTop="20dp"

android:layout_toRightOf="@+id/img_profile"

android:text="@string/name"

android:textColor="@color/colorPrimary"

android:textSize="16dp"

android:visibility="gone" />

</RelativeLayout>

</android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

toolbar.xml

<android.support.design.widget.AppBarLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

android:id="@+id/app_bar_layout"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:theme="@style/AppTheme.AppBarOverlay">

<android.support.v7.widget.Toolbar

android:id="@+id/toolbar"

android:layout_width="match_parent"

android:layout_height="?attr/actionBarSize"

android:background="?attr/colorPrimary"

app:popupTheme="@style/AppTheme.PopupOverlay">

<TextView

android:id="@+id/tv_title"

style="@style/tv_title"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/app_name" />

</android.support.v7.widget.Toolbar>

</android.support.design.widget.AppBarLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.sanjay.loginwithfacebook">

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<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=".MainActivity"

android:screenOrientation="portrait">

<intent-filter>

</intent-filter>

</activity>

<meta-data

android:name="com.facebook.sdk.ApplicationId"

android:value="@string/facebook_app_id" />

<activity

android:name="com.facebook.FacebookActivity"

android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"

android:label="@string/app_name" />

<activity

android:name="com.facebook.CustomTabActivity"

android:exported="true">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

styles.xml

<item name="colorPrimary">@color/colorPrimary</item>

<item name="colorPrimaryDark">@color/colorPrimary</item>

<item name="colorAccent">@color/colorPrimary</item>

</style>

<item name="android:layout_gravity">center</item>

<item name="android:textColor">@color/white</item>

<item name="android:textAllCaps">false</item>

<item name="android:textStyle">normal</item>

</style>

<item name="android:textAllCaps">false</item>

</style>

</resources>

build.gradle

apply plugin: 'com.android.application'

android {

compileSdkVersion 26

defaultConfig {

applicationId "com.sanjay.loginwithfacebook"

minSdkVersion 16

targetSdkVersion 26

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:26.1.0'

implementation 'com.android.support.constraint:constraint-layout:1.0.2'

testImplementation 'junit:junit:4.12'

androidTestImplementation 'com.android.support.test:runner:1.0.1'

androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

//Support Design

compile 'com.android.support:design:26+'

//Facebook

implementation 'com.facebook.android:facebook-login:[4,5)'

//Glide Image

compile 'com.github.bumptech.glide:glide:3.7.0'

}

Android Guide

Monday, 25 December 2017

Login With Facebook In Android Example

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