[Android]Twitter Login

The TwitterCore Kit provides Login with Twitter and the Twitter API


要讓Android實現Twitter Login功能，可以透過twitter-core來達成。


一、在使用Twitter-Core 之前，先來這裡註刪一個帳號

https://get.fabric.io/


二、然候在Android Studio 安裝fabric插件，詳細說明如下網址

https://www.fabric.io/downloads/android-studio

安裝完插件後，重新啟動Android Studio

三、點擊畫面上的Fabric按鈕，登入你的Fabric帳密後，選擇Twitter會有

Sample Code ，以及幫你改變build.gradle ，但是會Crash，我把爬文後

修改的地方貼出來。

---

四、在build.gradle(Module: app) 長這個樣子

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'

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


android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.example.flowercatswets.twitterlogin"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
// Must occur after the Android plugin
apply plugin: 'io.fabric'

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile('com.twitter.sdk.android:twitter:1.11.0@aar') {
        transitive = true;
    }

    }

---

五、Androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.flowercatswets.twitterlogin" >

    <application
        android:allowBackup="true"
        android:name=".MyApp"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data
            android:name="io.fabric.ApiKey"
            android:value="4456b845347338cc3f4d159551f57657a6f683fd" />
    </application>

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

---

六、MyApp.java（主要修改的地方放在這裡）

package com.example.flowercatswets.twitterlogin;

import android.app.Application;

import com.twitter.sdk.android.Twitter;
import com.twitter.sdk.android.core.TwitterAuthConfig;

import io.fabric.sdk.android.Fabric;

/**
 * Created by flowercatswets on 2016/1/3.
 */

public class MyApp extends Application
{
    private static final String TWITTER_KEY = "Your KEY";
    private static final String TWITTER_SECRET = "Your Secret";
    private TwitterAuthConfig authConfig;
    @Override
    public void onCreate() {
        super.onCreate();

        authConfig = new TwitterAuthConfig(TWITTER_KEY, TWITTER_SECRET);
        Fabric.with(this, new Twitter(authConfig));
    }
}

---

七、MainActivity.java

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.widget.Toast;

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;


public class MainActivity extends ActionBarActivity {

    // Note: Your consumer key and secret should be obfuscated in your source code before shipping.



    private TwitterLoginButton loginButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        loginButton = (TwitterLoginButton) findViewById(R.id.twitter_login_button);

        loginButton.setCallback(new Callback<TwitterSession>() {
            @Override
            public void success(Result<TwitterSession> result) {
                // The TwitterSession is also available through:
                // Twitter.getInstance().core.getSessionManager().getActiveSession()
                TwitterSession session = result.data;
                // TODO: Remove toast and use the TwitterSession's userID
                // with your app's user model
                String msg = "@" + session.getUserName() + " logged in! (#" + session.getUserId() + ")";
                Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_LONG).show();
            }

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

    @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.
        loginButton.onActivityResult(requestCode, resultCode, data);
    }
}

---

一開始把這段code放在OnCreate()會Crash，後來爬文後，移到Application後

就正常了。

authConfig = new TwitterAuthConfig(TWITTER_KEY, TWITTER_SECRET);
Fabric.with(this, new Twitter(authConfig));

KEY以及SECRET的內容，皆是有Fabric的插件幫我產生出來的，經實測是可以用的。

private static final String TWITTER_KEY = "Your KEY";
private static final String TWITTER_SECRET = "Your Secret";

參考來源：

https://docs.fabric.io/android/twitter/twitter-core.html

http://stackoverflow.com/questions/26629838/twitter-fabric-login-for-android

http://stackoverflow.com/questions/29363372/adding-twitter-kit-to-andoid-studio-project