Android Intégration Twitter avec oauth et Twitter4j
Je veux intégrer Twitter dans une Android et j'ai trouvé de nombreux tutoriels. J'en ai implémenté 2. Mais après avoir implémenté, lors de l'exécution de l'application, j'ai appris qu'ils utilisent une ancienne version de Twitter4J bibliothèque.
Bien que de nombreux autres didacticiels soient disponibles, mais aucun n'est le dernier one.i.e. juste 2-3 mois de plus. J'ai besoin d'un tutoriel ou d'un exemple utilisant la dernière Twitter4J version de la bibliothèque qui est Twitter4j-core-3.0. .
Mon objectif principal est de permettre à l'utilisateur de publier tweets sur son compte. Mais encore une fois, si l'utilisateur n'est pas connecté, je dois d'abord demander des informations d'identification. De plus, si l'utilisateur clique sur le bouton logout, j'ai besoin d'un moyen de déconnecter l'utilisateur.
J'ai résolu le problème. J'ai apporté des modifications au code que j'ai trouvé dans un tutoriel pour le faire fonctionner. Copie du code entier ici. Remplacez simplement par votre ConsumerKey et ConsumerSecret.
Vous devez ajouter la bibliothèque Twitter4j au dossier libs de votre projet.
AndroidManifest.xml:
<manifest xmlns:Android="http://schemas.Android.com/apk/res/Android"
package="com.androidhive.twitterconnect"
Android:versionCode="1"
Android:versionName="1.0" >
<uses-sdk
Android:minSdkVersion="14"
Android:targetSdkVersion="17" />
<!-- Permission - Internet Connect -->
<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=".MainActivity"
Android:label="@string/title_activity_main" >
<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>
MainActivity.Java:
package com.androidhive.twitterconnect;
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 com.androidhive.twitterconnect.R;
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.net.Uri;
import Android.os.AsyncTask;
import Android.os.Bundle;
import Android.text.Html;
import Android.util.Log;
import Android.view.View;
import Android.widget.Button;
import Android.widget.EditText;
import Android.widget.TextView;
import Android.widget.Toast;
public class MainActivity extends Activity {
// Constants
/**
* Register your here app https://dev.Twitter.com/apps/new and get your
* consumer key and secret
* */
static String Twitter_CONSUMER_KEY = "PutYourConsumerKeyHere"; // place your cosumer key here
static String Twitter_CONSUMER_SECRET = "PutYourConsumerSecretHere"; // place your consumer secret here
// Preference Constants
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";
// Twitter oauth urls
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";
// Login button
Button btnLoginTwitter;
// Update status button
Button btnUpdateStatus;
// Logout button
Button btnLogoutTwitter;
// EditText for update
EditText txtUpdate;
// lbl update
TextView lblUpdate;
TextView lblUserName;
// Progress dialog
ProgressDialog pDialog;
// Twitter
private static Twitter twitter;
private static RequestToken requestToken;
private AccessToken accessToken;
// Shared Preferences
private static SharedPreferences mSharedPreferences;
// Internet Connection detector
private ConnectionDetector cd;
// Alert Dialog Manager
AlertDialogManager alert = new AlertDialogManager();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
cd = new ConnectionDetector(getApplicationContext());
// Check if Internet present
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(MainActivity.this, "Internet Connection Error",
"Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// Check if Twitter keys are set
if(Twitter_CONSUMER_KEY.trim().length() == 0 || Twitter_CONSUMER_SECRET.trim().length() == 0){
// Internet Connection is not present
alert.showAlertDialog(MainActivity.this, "Twitter oAuth tokens", "Please set your Twitter oauth tokens first!", false);
// stop executing code by return
return;
}
// All UI elements
btnLoginTwitter = (Button) findViewById(R.id.btnLoginTwitter);
btnUpdateStatus = (Button) findViewById(R.id.btnUpdateStatus);
btnLogoutTwitter = (Button) findViewById(R.id.btnLogoutTwitter);
txtUpdate = (EditText) findViewById(R.id.txtUpdateStatus);
lblUpdate = (TextView) findViewById(R.id.lblUpdate);
lblUserName = (TextView) findViewById(R.id.lblUserName);
// Shared Preferences
mSharedPreferences = getApplicationContext().getSharedPreferences(
"MyPref", 0);
/**
* Twitter login button click event will call loginToTwitter() function
* */
btnLoginTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call login Twitter function
loginToTwitter();
}
});
/**
* Button click event to Update Status, will call updateTwitterStatus()
* function
* */
btnUpdateStatus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Call update status function
// Get the status from EditText
String status = txtUpdate.getText().toString();
// Check for blank text
if (status.trim().length() > 0) {
// update status
new updateTwitterStatus().execute(status);
} else {
// EditText is empty
Toast.makeText(getApplicationContext(),
"Please enter status message", Toast.LENGTH_SHORT)
.show();
}
}
});
/**
* Button click event for logout from Twitter
* */
btnLogoutTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call logout Twitter function
logoutFromTwitter();
}
});
/** This if conditions is tested once is
* redirected from Twitter page. Parse the uri to get oAuth
* Verifier
* */
if (!isTwitterLoggedInAlready()) {
Uri uri = getIntent().getData();
if (uri != null && uri.toString().startsWith(Twitter_CALLBACK_URL)) {
// oAuth verifier
final String verifier = uri
.getQueryParameter(URL_Twitter_OAUTH_VERIFIER);
try {
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
try {
// Get the access token
MainActivity.this.accessToken = Twitter.getOAuthAccessToken(
requestToken, verifier);
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
// Shared Preferences
Editor e = mSharedPreferences.edit();
// After getting access token, access token secret
// store them in application preferences
e.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
e.putString(PREF_KEY_OAUTH_SECRET,
accessToken.getTokenSecret());
// Store login status - true
e.putBoolean(PREF_KEY_Twitter_LOGIN, true);
e.commit(); // save changes
Log.e("Twitter OAuth Token", "> " + accessToken.getToken());
// Hide login button
btnLoginTwitter.setVisibility(View.GONE);
// Show Update Twitter
lblUpdate.setVisibility(View.VISIBLE);
txtUpdate.setVisibility(View.VISIBLE);
btnUpdateStatus.setVisibility(View.VISIBLE);
btnLogoutTwitter.setVisibility(View.VISIBLE);
// Getting user details from Twitter
// For now i am getting his name only
long userID = accessToken.getUserId();
User user = Twitter.showUser(userID);
String username = user.getName();
// Displaying in xml ui
lblUserName.setText(Html.fromHtml("<b>Welcome " + username + "</b>"));
} catch (Exception e) {
// Check log for login errors
Log.e("Twitter Login Error", "> " + e.getMessage());
e.printStackTrace();
}
}
}
}
/**
* Function to login Twitter
* */
private void loginToTwitter() {
// Check if already logged in
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();
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
try {
requestToken = Twitter
.getOAuthRequestToken(Twitter_CALLBACK_URL);
MainActivity.this.startActivity(new Intent(Intent.ACTION_VIEW, Uri
.parse(requestToken.getAuthenticationURL())));
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
} else {
// user already logged into Twitter
Toast.makeText(getApplicationContext(),
"Already Logged into Twitter", Toast.LENGTH_LONG).show();
}
}
/**
* Function to update status
* */
class updateTwitterStatus extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Updating to Twitter...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting Places JSON
* */
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());
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog and show
* the data in UI Always use runOnUiThread(new Runnable()) to update UI
* from background thread, otherwise you will get error
* **/
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
txtUpdate.setText("");
}
});
}
}
/**
* Function to logout from Twitter
* It will just clear the application shared preferences
* */
private void logoutFromTwitter() {
// Clear the shared preferences
Editor e = mSharedPreferences.edit();
e.remove(PREF_KEY_OAUTH_TOKEN);
e.remove(PREF_KEY_OAUTH_SECRET);
e.remove(PREF_KEY_Twitter_LOGIN);
e.commit();
// After this take the appropriate action
// I am showing the hiding/showing buttons again
// You might not needed this code
btnLogoutTwitter.setVisibility(View.GONE);
btnUpdateStatus.setVisibility(View.GONE);
txtUpdate.setVisibility(View.GONE);
lblUpdate.setVisibility(View.GONE);
lblUserName.setText("");
lblUserName.setVisibility(View.GONE);
btnLoginTwitter.setVisibility(View.VISIBLE);
}
/**
* Check user already logged in your application using Twitter Login flag is
* fetched from Shared Preferences
* */
private boolean isTwitterLoggedInAlready() {
// return Twitter login status from Shared Preferences
return mSharedPreferences.getBoolean(PREF_KEY_Twitter_LOGIN, false);
}
protected void onResume() {
super.onResume();
}
}
AlertDialogManager.Java:
package com.androidhive.twitterconnect;
import Android.app.AlertDialog;
import Android.content.Context;
import Android.content.DialogInterface;
public class AlertDialogManager {
/**
* Function to display simple Alert Dialog
* @param context - application context
* @param title - alert dialog title
* @param message - alert message
* @param status - success/failure (used to set icon)
* - pass null if you don't want icon
* */
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.androidhive.twitterconnect;
import Android.content.Context;
import Android.net.ConnectivityManager;
import Android.net.NetworkInfo;
public class ConnectionDetector {
private Context _context;
public ConnectionDetector(Context context){
this._context = context;
}
/**
* Checking for all possible internet providers
* **/
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)
{
return true;
}
}
return false;
}
}
C'est code d'origine par Ravi Tamada. Les modifications que j'ai apportées sont dans MainActivity.Java et AndroidManifest.xml fichiers uniquement.
J'ai trouvé un bon exemple qui fonctionne bien avec Twitter4j 3.0.3 sur Android. D'autres ne fonctionnent pas. http://hintdesk.com/how-to-Tweet-in-Twitter-within-Android-client/
Ceci est l'exemple de travail de mon code, j'utilise Twitter4j et vous n'avez pas besoin de définir d'intention dans le manifeste car j'utilise Webview au lieu du navigateur.
Placez votre clé de consommateur et secrète et vous devriez être prêt à partir
package com.example.mysituationtwittertest;
import Twitter4j.Twitter;
import Twitter4j.TwitterException;
import Twitter4j.TwitterFactory;
import Twitter4j.auth.AccessToken;
import Twitter4j.auth.RequestToken;
import Twitter4j.conf.Configuration;
import Twitter4j.conf.ConfigurationBuilder;
import Android.app.Activity;
import Android.content.SharedPreferences;
import Android.content.SharedPreferences.Editor;
import Android.net.Uri;
import Android.os.AsyncTask;
import Android.os.Bundle;
import Android.util.Log;
import Android.view.View;
import Android.webkit.WebView;
import Android.webkit.WebViewClient;
import Android.widget.Button;
import Android.widget.Toast;
public class MainActivity extends Activity {
// Constants
/**
* Register your here app https://dev.Twitter.com/apps/new and get your
* consumer key and secret
* */
static String Twitter_CONSUMER_KEY = "XXXXXXXXXXXXXXXXXXX"; // place your
// cosumer
// key here
static String Twitter_CONSUMER_SECRET = "XXXXXXXXXXXXXXXX"; // place
// your
// consumer
// secret
// here
// Preference Constants
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://youdare";
// Twitter oauth urls
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";
// Login button
Button btnShareTwitter;
WebView myWebView;
// Twitter
private static Twitter twitter;
private static RequestToken requestToken;
private AccessToken accessToken;
// Shared Preferences
private static SharedPreferences mSharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// All UI elements
btnShareTwitter = (Button) findViewById(R.id.btnShareTwitter);
myWebView = (WebView) findViewById(R.id.webView1);
myWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView webView, String url) {
if (url != null && url.startsWith(Twitter_CALLBACK_URL))
new AfterLoginTask().execute(url);
else
webView.loadUrl(url);
return true;
}
});
// Shared Preferences
mSharedPreferences = getApplicationContext().getSharedPreferences(
"MyPref", 0);
/**
* Twitter login button click event will call loginToTwitter() function
* */
btnShareTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call login Twitter function
new LoginTask().execute();
}
});
}
/**
* Function to login Twitter
* */
private void loginToTwitter() {
// Check if already logged in
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();
try {
requestToken = Twitter
.getOAuthRequestToken(Twitter_CALLBACK_URL);
} catch (TwitterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else {
// user already logged into Twitter
Toast.makeText(getApplicationContext(),
"Already Logged into Twitter", Toast.LENGTH_LONG).show();
}
}
/**
* Check user already logged in your application using Twitter Login flag is
* fetched from Shared Preferences
* */
private boolean isTwitterLoggedInAlready() {
// return Twitter login status from Shared Preferences
return mSharedPreferences.getBoolean(PREF_KEY_Twitter_LOGIN, false);
}
public void handleTwitterCallback(String url) {
Uri uri = Uri.parse(url);
// oAuth verifier
final String verifier = uri
.getQueryParameter(URL_Twitter_OAUTH_VERIFIER);
try {
// Get the access token
MainActivity.this.accessToken = Twitter.getOAuthAccessToken(
requestToken, verifier);
// Shared Preferences
Editor e = mSharedPreferences.edit();
// After getting access token, access token secret
// store them in application preferences
e.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
e.putString(PREF_KEY_OAUTH_SECRET, accessToken.getTokenSecret());
// Store login status - true
e.putBoolean(PREF_KEY_Twitter_LOGIN, true);
e.commit(); // save changes
Log.e("Twitter OAuth Token", "> " + accessToken.getToken());
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("XXXXXXXXXXXXXXXXX");
} catch (Exception e) {
e.printStackTrace();
}
}
class LoginTask extends AsyncTask<Void, Void, Boolean> {
@Override
protected Boolean doInBackground(Void... params) {
// TODO Auto-generated method stub
loginToTwitter();
return true;
}
@Override
protected void onPostExecute(Boolean result) {
// TODO Auto-generated method stub
myWebView.loadUrl(requestToken.getAuthenticationURL());
myWebView.setVisibility(View.VISIBLE);
myWebView.requestFocus(View.FOCUS_DOWN);
}
}
class AfterLoginTask extends AsyncTask<String, Void, Boolean> {
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
myWebView.clearHistory();
}
@Override
protected Boolean doInBackground(String... params) {
// TODO Auto-generated method stub
handleTwitterCallback(params[0]);
return true;
}
@Override
protected void onPostExecute(Boolean result) {
// TODO Auto-generated method stub
myWebView.setVisibility(View.GONE);
Toast.makeText(MainActivity.this, "Tweet Successful",
Toast.LENGTH_SHORT).show();
}
}
@Override
public void onBackPressed() {
if (myWebView.getVisibility() == View.VISIBLE) {
if (myWebView.canGoBack()) {
myWebView.goBack();
return;
} else {
myWebView.setVisibility(View.GONE);
return;
}
}
super.onBackPressed();
}
}
Pour illustrer mon commentaire ci-dessus, voici ma dernière classe de travail MainActivity. Assez similaire au code ci-dessus, les différences sont les suivantes:
- la classe interne
OAuthAccessTokenTask, qui comprend la récupération du jeton Oauth et les informations utilisateur - son rappel
onRequestTokenRetrieved(Exception)
Notez également que pour que cela fonctionne, vous devez déclarer une URL de rappel dans les paramètres de votre application Twitter, même fausse. Il m'a fallu quelques heures pour comprendre comment cela fonctionne.
Lorsque vous consultez la documentation Twitter4j, les premiers morceaux de code font référence à un code PIN que vous devez obtenir à partir d'une page Web d'autorisation. C'est ce qui se produit lorsqu'aucune URL de rappel n'est définie dans votre application. Elle s'appelle PIN authentification basée et vous ne voulez pas l'utiliser sur un mobile :)
public class MainActivity extends Activity {
// Constants
/**
* Register your here app https://dev.Twitter.com/apps/new and get your
* consumer key and secret
* */
static String Twitter_CONSUMER_KEY = "PutYourConsumerKeyHere"; // place your cosumer key here
static String Twitter_CONSUMER_SECRET = "PutYourConsumerSecretHere"; // place your consumer secret here
// Preference Constants
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";
// Twitter oauth urls
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";
// Login button
Button btnLoginTwitter;
// Update status button
Button btnUpdateStatus;
// Logout button
Button btnLogoutTwitter;
// EditText for update
EditText txtUpdate;
// lbl update
TextView lblUpdate;
TextView lblUserName;
// Progress dialog
ProgressDialog pDialog;
// Twitter
private static Twitter twitter;
private static RequestToken requestToken;
private AccessToken accessToken;
private User user;
// Shared Preferences
private static SharedPreferences mSharedPreferences;
// Internet Connection detector
private ConnectionDetector cd;
// Alert Dialog Manager
AlertDialogManager alert = new AlertDialogManager();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
cd = new ConnectionDetector(getApplicationContext());
// Check if Internet present
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(MainActivity.this, "Internet Connection Error", "Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// Check if Twitter keys are set
if(Twitter_CONSUMER_KEY.trim().length() == 0 || Twitter_CONSUMER_SECRET.trim().length() == 0){
// Internet Connection is not present
alert.showAlertDialog(MainActivity.this, "Twitter oAuth tokens", "Please set your Twitter oauth tokens first!", false);
// stop executing code by return
return;
}
// All UI elements
btnLoginTwitter = (Button) findViewById(R.id.btnLoginTwitter);
btnUpdateStatus = (Button) findViewById(R.id.btnUpdateStatus);
btnLogoutTwitter = (Button) findViewById(R.id.btnLogoutTwitter);
txtUpdate = (EditText) findViewById(R.id.txtUpdateStatus);
lblUpdate = (TextView) findViewById(R.id.lblUpdate);
lblUserName = (TextView) findViewById(R.id.lblUserName);
// Shared Preferences
mSharedPreferences = getApplicationContext().getSharedPreferences("MyPref", 0);
/**
* Twitter login button click event will call loginToTwitter() function
* */
btnLoginTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call login Twitter function
loginToTwitter();
}
});
/**
* Button click event to Update Status, will call updateTwitterStatus()
* function
* */
btnUpdateStatus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Call update status function
// Get the status from EditText
String status = txtUpdate.getText().toString();
// Check for blank text
if (status.trim().length() > 0) {
// update status
new updateTwitterStatus().execute(status);
} else {
// EditText is empty
Toast.makeText(
getApplicationContext(),
"Please enter status message",
Toast.LENGTH_SHORT
).show();
}
}
});
/**
* Button click event for logout from Twitter
* */
btnLogoutTwitter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// Call logout Twitter function
logoutFromTwitter();
}
});
/** This if conditions is tested once is
* redirected from Twitter page. Parse the uri to get oAuth
* Verifier
* */
if (!isTwitterLoggedInAlready()) {
Uri uri = getIntent().getData();
if (uri != null && uri.toString().startsWith(Twitter_CALLBACK_URL)) {
// oAuth verifier
String verifier = uri.getQueryParameter(URL_Twitter_OAUTH_VERIFIER);
new OAuthAccessTokenTask().execute(verifier);
}
}
}
private class OAuthAccessTokenTask extends AsyncTask<String, Void, Exception>
{
@Override
protected Exception doInBackground(String... params) {
Exception toReturn = null;
try {
accessToken = Twitter.getOAuthAccessToken(requestToken, params[0]);
user = Twitter.showUser(accessToken.getUserId());
}
catch(TwitterException e) {
Log.e(MainActivity.class.getName(), "TwitterError: " + e.getErrorMessage());
toReturn = e;
}
catch(Exception e) {
Log.e(MainActivity.class.getName(), "Error: " + e.getMessage());
toReturn = e;
}
return toReturn;
}
@Override
protected void onPostExecute(Exception exception) {
onRequestTokenRetrieved(exception);
}
}
private void onRequestTokenRetrieved(Exception result) {
if (result != null) {
Toast.makeText(
this,
result.getMessage(),
Toast.LENGTH_LONG
).show();
}
else {
try {
// Shared Preferences
Editor editor = mSharedPreferences.edit();
// After getting access token, access token secret
// store them in application preferences
editor.putString(PREF_KEY_OAUTH_TOKEN, accessToken.getToken());
editor.putString(PREF_KEY_OAUTH_SECRET,
accessToken.getTokenSecret());
// Store login status - true
editor.putBoolean(PREF_KEY_Twitter_LOGIN, true);
editor.commit(); // save changes
Log.e("Twitter OAuth Token", "> " + accessToken.getToken());
// Hide login button
btnLoginTwitter.setVisibility(View.GONE);
// Show Update Twitter
lblUpdate.setVisibility(View.VISIBLE);
txtUpdate.setVisibility(View.VISIBLE);
btnUpdateStatus.setVisibility(View.VISIBLE);
btnLogoutTwitter.setVisibility(View.VISIBLE);
// Getting user details from Twitter
String username = user.getName();
// Displaying in xml ui
lblUserName.setText(Html.fromHtml("<b>Welcome " + username + "</b>"));
}
catch (Exception ex) {
// Check log for login errors
Log.e("Twitter Login Error", "> " + ex.getMessage());
ex.printStackTrace();
}
}
}
/**
* Function to login Twitter
* */
private void loginToTwitter() {
// Check if already logged in
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();
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
try {
requestToken = Twitter.getOAuthRequestToken(Twitter_CALLBACK_URL);
MainActivity.this.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(requestToken.getAuthenticationURL())));
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Already Logged into Twitter", Toast.LENGTH_LONG).show();
}
}
});
thread.start();
} else {
// user already logged into Twitter
Toast.makeText(getApplicationContext(), "Already Logged into Twitter", Toast.LENGTH_LONG).show();
}
}
/**
* Function to update status
* */
class updateTwitterStatus extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Updating to Twitter...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting Places JSON
* */
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());
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog and show
* the data in UI Always use runOnUiThread(new Runnable()) to update UI
* from background thread, otherwise you will get error
* **/
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
txtUpdate.setText("");
}
});
}
}
/**
* Function to logout from Twitter
* It will just clear the application shared preferences
* */
private void logoutFromTwitter() {
// Clear the shared preferences
Editor e = mSharedPreferences.edit();
e.remove(PREF_KEY_OAUTH_TOKEN);
e.remove(PREF_KEY_OAUTH_SECRET);
e.remove(PREF_KEY_Twitter_LOGIN);
e.commit();
// After this take the appropriate action
// I am showing the hiding/showing buttons again
// You might not needed this code
btnLogoutTwitter.setVisibility(View.GONE);
btnUpdateStatus.setVisibility(View.GONE);
txtUpdate.setVisibility(View.GONE);
lblUpdate.setVisibility(View.GONE);
lblUserName.setText("");
lblUserName.setVisibility(View.GONE);
btnLoginTwitter.setVisibility(View.VISIBLE);
}
/**
* Check user already logged in your application using Twitter Login flag is
* fetched from Shared Preferences
* */
private boolean isTwitterLoggedInAlready() {
// return Twitter login status from Shared Preferences
return mSharedPreferences.getBoolean(PREF_KEY_Twitter_LOGIN, false);
}
protected void onResume() {
super.onResume();
}
}
Avez-vous vu le projet se connecter avec Twitter github, il est basé sur Twitter4j et implémente la connexion Twitter pour Android.