Use twitter4j oauth to post status in Android app

我们这里使用twitter4j来实现这个功能. http://twitter4j.org/

新建一个android项目

下载twitter4j-core-2.1.8.jar, 放到${base.dir}/libs, 并加到项目的classpath中

MyActivity

package com.example;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;
import twitter4j.http.AccessToken;
import twitter4j.http.RequestToken;

import java.util.Date;

public class MyActivity extends Activity {



    private final String CALLBACKURL = "myapp://mainactivity";
    private static Twitter twitter;

    private TextView tweetTextView;
    private Button buttonLogin;


    public static final String consumerKey = "XXXXXXXXX";
    public static final String consumerSecret = "XXXXXXXXXXXXXXXX";

    private void doOauth() {


        try {

            twitter = new TwitterFactory().getInstance();
            twitter.setOAuthConsumer(consumerKey, consumerSecret);
            RequestToken requestToken = twitter.getOAuthRequestToken(CALLBACKURL);
            System.out.println("Got request token.");
            System.out.println("Request token: "+ requestToken.getToken());
            System.out.println("Request token secret: "+ requestToken.getTokenSecret());
            this.startActivity(new Intent(Intent.ACTION_VIEW,
            Uri.parse(requestToken.getAuthenticationURL())));
        } catch (TwitterException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
    }
    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        Uri uri = intent.getData();
        if (uri != null && uri.toString().startsWith(CALLBACKURL)) {
            String verifier =
                    uri.getQueryParameter("oauth_verifier");
            try {
                AccessToken oAuthAccessToken = twitter.getOAuthAccessToken(verifier);
                // TODO: store the oauthaccess token
// create a tweet
                Date d =
                        new Date(System.currentTimeMillis());
                String tweet = "#OAuth working! " + d.toLocaleString();
// send the tweet
                twitter.updateStatus(tweet);
// feedback for the user...
                Toast.makeText(this, tweet, Toast.LENGTH_LONG).show();
                buttonLogin.setVisibility(Button.GONE);
            } catch (Exception e) {
                e.printStackTrace();
                Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
            }
        }
    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        tweetTextView = (TextView) findViewById(R.id.tweet);
        buttonLogin = (Button) findViewById(R.id.ButtonLogin);
        setContentView(R.layout.main);
        doOauth();

    }
}

consumerKey, consumerSecret需要换成你们自己的, 在twitter中创建app后可以得到. 这里要注意的是CALLBACKURL变量, 这里是用户verfiy之后browser回调的url. 这个我们需要在AndroidManifest.xml定义. 这样就能使browser带回到MyActivity中.

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.example"
          android:versionCode="1"
          android:versionName="1.0">
    <application android:label="twittertest" android:icon="@drawable/icon" android:debuggable="true">
        <activity android:name="MyActivity"
                  android:label="@string/app_name" android:launchMode="singleInstance" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>

            <intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data android:scheme="myapp" android:host="mainactivity"/>
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest> 

在国内twitter被墙, 所以需要代理. 用这个命令可以起一个链接到代理的模拟器

引用

./emulator -avd adv8 -http-proxy 192.168.1.13:8118 -debug-proxy

附件是源码.

参考:

http://groups.google.com/group/twitter-development-talk/browse_thread/thread/e4fc18c1398895c4/9d4a29f66f930a3e?lnk=gst&q=OAuth

http://abhinavasblog.blogspot.com/2010/09/using-twitter-with-oauth-on-andorid.html