Twitter V1.1在Android中的应用

前面申请CONSUMER_KEY和CONSUMER_SECRET的过程就忽略了，这里直接上代码。

 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.twitter_demo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.INTERNET" />
    <!-- Network State Permissions -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.twitter_demo.MainActivity"
            android:label="@string/app_name" >
            <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:host="t4jsample" android:scheme="oauth" />
            </intent-filter>
        </activity>
    </application>

</manifest>

 

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".TwitterHomeActivity" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="106dp"
    android:layout_marginTop="21dp"
    android:text="@string/hello_world"
    android:textColor="#A52A2A"
    android:textStyle="bold"
    android:typeface="serif" />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView1"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="80dp"
    android:text="Login to twitter" />

<EditText
    android:id="@+id/editText1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:visibility="gone"
    android:ems="10" />

<Button
    android:id="@+id/button2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/editText1"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="34dp"
    android:visibility="gone"
    android:text="Tweets" />

</RelativeLayout>

 

AlertDialogManager.java

package com.example.twitter_demo;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;

public class AlertDialogManager {
	public void showAlertDialog(Context context, String title, String message,
			Boolean status) {
		AlertDialog alertDialog = new AlertDialog.Builder(context).create();

		// Setting Dialog Title
		alertDialog.setTitle(title);

		// Setting Dialog Message
		alertDialog.setMessage(message);

		if (status != null)
			// Setting alert dialog icon
			// alertDialog.setIcon((status) ? R.drawable.success :
			// R.drawable.fail);

			// Setting OK Button
			alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
				public void onClick(DialogInterface dialog, int which) {
				}
			});

		// Showing Alert Message
		alertDialog.show();
	}
}

 

ConnectionDetector.java

package com.example.twitter_demo;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;

public class ConnectionDetector {
	private Context _context;

	public ConnectionDetector(Context context) {
		this._context = context;
	}

	public boolean isConnectingToInternet() {
		ConnectivityManager connectivity = (ConnectivityManager) _context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connectivity != null) {
			NetworkInfo[] info = connectivity.getAllNetworkInfo();
			if (info != null)
				for (int i = 0; i < info.length; i++)
					if (info[i].getState() == NetworkInfo.State.CONNECTED) {
						Log.d("Network",
								"NETWORKnAME: " + info[i].getTypeName());
						return true;
					}
		}
		return false;
	}
}

 

MainActivity.java

package com.example.twitter_demo;

import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.User;
import twitter4j.auth.AccessToken;
import twitter4j.auth.RequestToken;
import twitter4j.conf.Configuration;
import twitter4j.conf.ConfigurationBuilder;

import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.ActivityInfo;
import android.text.Html;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
	static String TWITTER_CONSUMER_KEY = "gWuDKEHVD4Ito3TKNaexmg";
	static String TWITTER_CONSUMER_SECRET = "0DYm4kSSOnZ0iYmUojJPZOs0KppYivN9jiVnkba574";
	static String PREFERENCE_NAME = "twitter_oauth";
	static final String PREF_KEY_OAUTH_TOKEN = "oauth_token";
	static final String PREF_KEY_OAUTH_SECRET = "oauth_token_secret";
	static final String PREF_KEY_TWITTER_LOGIN = "isTwitterLogedIn";
	static final String TWITTER_CALLBACK_URL = "oauth://t4jsample";
	static final String URL_TWITTER_AUTH = "auth_url";
	static final String URL_TWITTER_OAUTH_VERIFIER = "oauth_verifier";
	static final String URL_TWITTER_OAUTH_TOKEN = "oauth_token";

	ProgressDialog pDialog;
	private static Twitter twitter;
	private static RequestToken requestToken;
	private static SharedPreferences mSharedPreferences;
	private ConnectionDetector cd;
	AlertDialogManager alert = new AlertDialogManager();
	EditText sts;

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

		cd = new ConnectionDetector(getApplicationContext());
		if (!cd.isConnectingToInternet()) {
			alert.showAlertDialog(MainActivity.this,
					"Internet Connection Error",
					"Please connect to working Internet connection", false);
			return;
		}
		// Check if twitter keys are set
		if (TWITTER_CONSUMER_KEY.trim().length() == 0
				|| TWITTER_CONSUMER_SECRET.trim().length() == 0) {
			alert.showAlertDialog(MainActivity.this, "Twitter oAuth tokens",
					"Please set your twitter oauth tokens first!", false);
			return;
		}
		mSharedPreferences = getApplicationContext().getSharedPreferences(
				"MyPref", 0);

		findViewById(R.id.button1).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View v) {
						loginToTwitter();
					}
				});

		findViewById(R.id.button2).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View v) {
						sts = (EditText) findViewById(R.id.editText1);
						String status = sts.getText().toString();
						if (status.trim().length() > 0) {
							new updateTwitterStatus().execute(status);
						} else {
							Toast.makeText(getApplicationContext(),
									"Please enter status message",
									Toast.LENGTH_SHORT).show();
						}
					}
				});

		if (!isTwitterLoggedInAlready()) {
			Uri uri = getIntent().getData();
			if (uri != null && uri.toString().startsWith(TWITTER_CALLBACK_URL)) {
				if (pDialog == null) {
					pDialog = new ProgressDialog(MainActivity.this);
				}
				pDialog.setMessage("Access Tiwtter...");
				pDialog.show();
				new AccessTwitter().execute(uri);
			}
		} else {
			findViewById(R.id.button1).setVisibility(View.GONE);
			findViewById(R.id.editText1).setVisibility(View.VISIBLE);
			findViewById(R.id.button2).setVisibility(View.VISIBLE);
		}
	}

	private ProgressDialog getProgressDialog() {
		ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
		progressDialog.setTitle("login...");
		progressDialog.setMessage("please wait...");
		return progressDialog;
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		return true;
	}

	private void loginToTwitter() {
		if (!isTwitterLoggedInAlready()) {
			ConfigurationBuilder builder = new ConfigurationBuilder();
			builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY);
			builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET);
			Configuration configuration = builder.build();

			TwitterFactory factory = new TwitterFactory(configuration);
			twitter = factory.getInstance();

			new RequestTwitter().execute();
		} else {
			Toast.makeText(getApplicationContext(),
					"Already Logged into twitter", Toast.LENGTH_LONG).show();
		}
	}

	private class RequestTwitter extends AsyncTask<String, String, String> {
		@Override
		protected String doInBackground(String... params) {
			try {
				requestToken = twitter
						.getOAuthRequestToken(TWITTER_CALLBACK_URL);
			} catch (TwitterException e) {
				e.printStackTrace();
			}
			return null;
		}

		@Override
		protected void onPostExecute(String result) {
			if (requestToken != null) {
				Intent intent = new Intent(Intent.ACTION_VIEW,
						Uri.parse(requestToken.getAuthenticationURL()));
				intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
				intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
				MainActivity.this.startActivity(intent);
			} else {
				Log.e("TAG", "requstToken error");
			}
			super.onPostExecute(result);
		}
	}

	private class AccessTwitter extends AsyncTask<Uri, String, Boolean> {
		@Override
		protected Boolean doInBackground(Uri... params) {
			Uri uri = params[0];
			if (uri != null && uri.toString().startsWith(TWITTER_CALLBACK_URL)) {
				String verifier = uri
						.getQueryParameter(URL_TWITTER_OAUTH_VERIFIER);
				try {
					AccessToken accessToken = twitter.getOAuthAccessToken(
							requestToken, verifier);
					// Shared Preferences
					Editor e = mSharedPreferences.edit();
					e.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
					e.putString(PREF_KEY_OAUTH_SECRET,
							accessToken.getTokenSecret());
					e.putBoolean(PREF_KEY_TWITTER_LOGIN, true);
					e.commit();

					Log.e("Twitter OAuth Token", "> " + accessToken.getToken());

					long userID = accessToken.getUserId();
					User user = twitter.showUser(userID);
					String username = user.getName();
					Log.e("UserID: ", "userID: " + userID + "" + username);
					Log.v("Welcome:",
							"Thanks:"
									+ Html.fromHtml("<b>Welcome " + username
											+ "</b>"));
					return true;
				} catch (Exception e) {
					Log.e("Twitter Login Error", "> " + e.getMessage(), e);
				}
			}
			return false;
		}

		@Override
		protected void onPostExecute(Boolean result) {
			pDialog.dismiss();
			if (result) {
				findViewById(R.id.button1).setVisibility(View.GONE);
				findViewById(R.id.editText1).setVisibility(View.VISIBLE);
				findViewById(R.id.button2).setVisibility(View.VISIBLE);
			} else {
				Log.e("TAG", "accessToken error");
			}
			super.onPostExecute(result);
		}
	}

	private boolean isTwitterLoggedInAlready() {
		return mSharedPreferences.getBoolean(PREF_KEY_TWITTER_LOGIN, false);
	}

	class updateTwitterStatus extends AsyncTask<String, String, String> {
		@Override
		protected void onPreExecute() {
			super.onPreExecute();
			if (pDialog == null) {
				pDialog = new ProgressDialog(MainActivity.this);
			}

			pDialog.setMessage("Updating to twitter...");
			pDialog.setIndeterminate(false);
			pDialog.setCancelable(false);
			pDialog.show();
		}

		protected String doInBackground(String... args) {
			Log.d("Tweet Text", "> " + args[0]);
			String status = args[0];
			try {
				ConfigurationBuilder builder = new ConfigurationBuilder();
				builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY);
				builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET);
				// Access Token
				String access_token = mSharedPreferences.getString(
						PREF_KEY_OAUTH_TOKEN, "");
				// Access Token Secret
				String access_token_secret = mSharedPreferences.getString(
						PREF_KEY_OAUTH_SECRET, "");

				AccessToken accessToken = new AccessToken(access_token,
						access_token_secret);
				Twitter twitter = new TwitterFactory(builder.build())
						.getInstance(accessToken);

				// Update status
				twitter4j.Status response = twitter.updateStatus(status);

				Log.d("Status", "> " + response.getText());
			} catch (TwitterException e) {
				// Error in updating status
				Log.d("Twitter Update Error", e.getMessage());
			}
			return null;
		}

		protected void onPostExecute(String file_url) {
			// dismiss the dialog after getting all products
			pDialog.dismiss();
			// updating UI from Background Thread
			runOnUiThread(new Runnable() {
				@Override
				public void run() {
					Toast.makeText(getApplicationContext(),
							"Status tweeted successfully", Toast.LENGTH_SHORT)
							.show();
					// Clearing EditText field
					sts.setText("");
				}
			});
		}
	}

}