Java tutorial
/*********************************************** This file is part of the Twook project http://github.com/unchiujar/Twook Twook is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Twook is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Twook. If not, see <http://www.gnu.org/licenses/>. **********************************************/ package com.nookdevs.twook.activities; import twitter4j.Twitter; import twitter4j.TwitterException; import android.app.ProgressDialog; import android.content.res.Resources; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.View.OnKeyListener; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.TextView; import com.nookdevs.common.nookBaseSimpleActivity; /** * * Activity that prompts the user to enter a tweet. * * * @author Vasile Jureschi <vasile.jureschi@gmail.com> * @version 0.0.2 * @since 0.0.2 * * @see Settings * */ public class TweetActivity extends nookBaseSimpleActivity { private final static String TAG = TweetActivity.class.getName(); private ProgressDialog postProgress = null; private final int WAIT_TIME = 200; private final int TWEET_LENGTH = 140; Thread postTweetThread; private Runnable postTweet; private TextListener softKeyListener = new TextListener(this); int left; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // set the title at the top of the eink screen Resources res = getResources(); NAME = res.getText(R.string.app_name).toString() + res.getText(R.string.title_separator).toString() + res.getText(R.string.tweet_title).toString(); setContentView(R.layout.write_tweet); InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE); imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); EditText tweet = (EditText) findViewById(R.id.tweet_message); tweet.setOnKeyListener(softKeyListener); postTweet = new Runnable() { @Override public void run() { updateStatus(); } }; } private void updateStatus() { try { Settings settings = Settings.getSettings(this); Twitter twitter = settings.getConnection(); EditText tweetEdit = (EditText) findViewById(R.id.tweet_message); String tweet = tweetEdit.getText().toString(); twitter.updateStatus(tweet); Thread.sleep(WAIT_TIME); } catch (InterruptedException excep) { Log.e(TAG, "Thread has been interrupted " + excep.getMessage()); } catch (TwitterException excep) { Log.e(TAG, "Twitter exception" + excep.getMessage()); } } private void processCmd(int keyCode) { switch (keyCode) { case SOFT_KEYBOARD_SUBMIT: EditText tweet = (EditText) findViewById(R.id.tweet_message); Log.d(TAG, "Message is : " + tweet.getText().toString()); if (left >= 0) { postTweetThread = new Thread(null, postTweet, "MagentoBackground"); postTweetThread.start(); postProgress = ProgressDialog.show(TweetActivity.this, "Please wait...", "Updating status...", true); Log.d(TAG, "Tweet posted"); finish(); } else { TextView tweetLength = (TextView) findViewById(R.id.tweet_length); tweetLength.setText("Remove " + Math.abs(left) + " characters before submitting."); } break; case SOFT_KEYBOARD_CANCEL: finish(); break; } } class TextListener implements OnKeyListener { private TweetActivity settings; public TextListener(TweetActivity settings) { this.settings = settings; } public boolean onKey(View view, int keyCode, KeyEvent keyEvent) { Log.d(TAG, "Received keycode: " + keyCode); if (keyEvent.getAction() == KeyEvent.ACTION_UP) { if (view instanceof EditText) { EditText editTxt = (EditText) view; if (keyCode == nookBaseSimpleActivity.SOFT_KEYBOARD_CLEAR) { // Clear editTxt.setText(""); } else { // calculate the length of the text entered // and display the remaining number of characters TextView tweetLength = (TextView) findViewById(R.id.tweet_length); left = TWEET_LENGTH - editTxt.getText().toString().length(); tweetLength.setText("" + left + " characters remaining"); settings.processCmd(keyCode); } } } return false; } } }