Integrating Twitter In Android App

activity_twitter.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:id="@+id/activity_twitter"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.dnsoftindia.featuredemo.activities.TwitterActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_margin="10dp">

        <com.twitter.sdk.android.core.identity.TwitterLoginButton
            android:id="@+id/btnTwitter"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="120dp"
            android:maxLines="3"
            android:maxLength="140"
            android:hint="@string/say_something"
            android:id="@+id/etTweet" />

        <Button
            android:layout_width="200dp"
            android:layout_height="50dp"
            android:text="@string/tweet"
            android:id="@+id/btnTweet"
            android:layout_gravity="center"/>

        <TextView
            android:text=""
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/tvTwitterUser"
            android:textSize="18sp"
            android:lines="5"
            android:gravity="center"/>

    </LinearLayout>

</ScrollView>

build.gradle (App Module)

buildscript {
    repositories {
        maven { url 'https://maven.fabric.io/public' }
    }

    dependencies {
        classpath 'io.fabric.tools:gradle:1.+'
    }
}
apply plugin: 'com.android.application'
apply plugin: 'io.fabric'

apply plugin: 'com.neenbedankt.android-apt'

repositories {
    maven { url 'https://maven.fabric.io/public' }
}



android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.dnsoftindia.featuredemo"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    lintOptions {
        abortOnError false
    }
    dexOptions {
        preDexLibraries = 'true' != System.getenv('CI')
        javaMaxHeapSize "4g"
    }

    packagingOptions {
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/ASL2.0'
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile('com.twitter.sdk.android:twitter:2.3.1@aar') {
        transitive = true;
    }
    compile 'com.android.support:appcompat-v7:25.1.0'
    compile 'com.android.support:support-v4:25.1.0'
    compile 'com.android.support:support-annotations:25.1.0'
    compile 'com.android.support:cardview-v7:25.1.0'
    compile 'com.android.support:customtabs:25.1.0'
    compile 'com.android.support:design:25.1.0'

    compile 'com.jakewharton:butterknife:8.2.1'
    apt 'com.jakewharton:butterknife-compiler:8.2.1'


    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
    testCompile 'junit:junit:4.12'
}

TwitterActivity.java

package com.dnsoftindia.featuredemo.activities;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.TextView;

import com.dnsoftindia.featuredemo.R;
import com.dnsoftindia.featuredemo.utils.UIUtils;
import com.twitter.sdk.android.core.Callback;
import com.twitter.sdk.android.core.Result;
import com.twitter.sdk.android.core.TwitterException;
import com.twitter.sdk.android.core.TwitterSession;
import com.twitter.sdk.android.core.identity.TwitterLoginButton;
import com.twitter.sdk.android.tweetcomposer.TweetComposer;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;

public class TwitterActivity extends AppCompatActivity {

    // Note: Your consumer key and secret should be obfuscated in your source code before shipping.
    private static final String TWITTER_KEY = "YOUR_TWITTER_API_KEY";
    private static final String TWITTER_SECRET = "YOUR_TWITTER_API_SECRET";

    @BindView(R.id.btnTwitter)
    TwitterLoginButton btnTwitter;
    @BindView(R.id.etTweet)
    EditText etTweet;
    @BindView(R.id.btnTweet)
    Button btnTweet;
    @BindView(R.id.tvTwitterUser)
    TextView tvTwitterUser;
    @BindView(R.id.activity_twitter)
    ScrollView activityTwitter;

    TwitterSession session = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_twitter);
        ButterKnife.bind(this);
        setTitle("Twitter");
        
        TwitterAuthConfig authConfig = new TwitterAuthConfig(TWITTER_KEY, TWITTER_SECRET);
        Fabric.with(this, new Twitter(authConfig), new TweetComposer());

        btnTwitter.setCallback(new Callback<TwitterSession>() {
            @Override
            public void success(Result<TwitterSession> result) {
                // The TwitterSession is also available through:
                // Twitter.getInstance().core.getSessionManager().getActiveSession()
                session = result.data;
                String msg = "@" + session.getUserName()
                        + " \n logged in! (#" + session.getUserId() + ")";
                tvTwitterUser.setText(msg);
                // Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_LONG).show();


            }
            @Override
            public void failure(TwitterException exception) {
                Log.d("TwitterKit", "Login with Twitter failure", exception);
            }
        });
    }

    @OnClick({R.id.btnTweet})
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.btnTweet:
                if (etTweet.getText().toString()!=null && etTweet.getText().toString().length()>0) {
                    TweetComposer.Builder builder = new TweetComposer.Builder(this)
                            .text(etTweet.getText().toString());
                    builder.show();
                }
                else {
                    UIUtils.showToast(this, "Please enter your tweet.");
                }
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // Make sure that the loginButton hears the result from any
        // Activity that it triggered.
        btnTwitter.onActivityResult(requestCode, resultCode, data);
    }
}