Java tutorial
/*** The MIT License (MIT) Copyright 2014 Rutvijkumar Shah Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ***/ package com.github.rutvijkumar.twittfuse.fragments; import java.util.HashSet; import org.json.JSONObject; import android.app.Activity; import android.app.Dialog; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.github.rutvijkumar.twittfuse.R; import com.github.rutvijkumar.twittfuse.Util; import com.github.rutvijkumar.twittfuse.activities.OnNewTweetListener; import com.github.rutvijkumar.twittfuse.api.TwitterClient; import com.github.rutvijkumar.twittfuse.models.Tweet; import com.github.rutvijkumar.twittfuse.models.User; import com.loopj.android.http.JsonHttpResponseHandler; import com.nostra13.universalimageloader.core.ImageLoader; public class ComposeDialog extends DialogFragment { private Activity activity; private TwitterClient client; private User currentUser; private ImageView currentUserProfilePic; private TextView username; private TextView userScreenName; private TextView remainingChars; private EditText tweetTextara; private Button tweetIt; private HashSet<String> replyToScreenNames;//NOT Handles twitter usernames without '@' private String replyToTweetId; private final static int CHARS_LIMIT = 140; public ComposeDialog() { } public void setActivity(Activity activity) { this.activity = activity; } public void setReplyTo(String screenName, String replyToTweetId) { this.replyToScreenNames = new HashSet<String>(); this.replyToScreenNames.add(screenName); this.replyToTweetId = replyToTweetId; } public void setReplyTo(HashSet<String> replyToScreenNames, String replyToTweetId) { this.replyToScreenNames = replyToScreenNames; this.replyToTweetId = replyToTweetId; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Dialog dialog = getDialog(); Window window = dialog.getWindow(); View view = inflater.inflate(R.layout.compose_dialog, container); window.requestFeature(Window.FEATURE_NO_TITLE); window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); window.setLayout(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); setUpUI(view); getUserAccountDetails(); return view; } private void setUpUI(View view) { // Populate UI elements with currentUser Object currentUserProfilePic = (ImageView) view.findViewById(R.id.currentUserProfilePic); username = (TextView) view.findViewById(R.id.username); userScreenName = (TextView) view.findViewById(R.id.userscreenname); remainingChars = (TextView) view.findViewById(R.id.remainingChars); tweetTextara = (EditText) view.findViewById(R.id.tweetTextara); tweetIt = (Button) view.findViewById(R.id.tweetIt); setActionsListeners(); } private void setActionsListeners() { tweetIt.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String tweetBody = tweetTextara.getEditableText().toString(); if (!Util.isNetworkAvailable(activity)) { Util.postTweetOffline(tweetBody, replyToTweetId); dismiss(); Toast.makeText(activity, "Network unavailable :Tweet will be saved and posted later ", Toast.LENGTH_LONG).show(); } else { if (replyToTweetId != null) { postReply(tweetBody, replyToTweetId); } else { postTweet(tweetBody); } } } }); tweetTextara.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { int availableChar = 0; String typedTweetText = tweetTextara.getEditableText().toString().trim(); availableChar = CHARS_LIMIT - typedTweetText.length(); String updatedRemainingChars = String.valueOf((CHARS_LIMIT - typedTweetText.length())); remainingChars.setText(updatedRemainingChars); if (availableChar < 0) { tweetIt.setEnabled(false); tweetIt.setBackgroundColor(getResources().getColor(R.color.TwitterBlue_disabled)); remainingChars.setTextColor(getResources().getColor(R.color.Red)); } else { tweetIt.setEnabled(true); tweetIt.setBackgroundColor(getResources().getColor(R.color.TwitterBlue)); remainingChars.setTextColor(getResources().getColor(android.R.color.black)); } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable s) { // TODO Auto-generated method stub } }); } public void postReply(String tweetBody, String replyToTweetId) { client.postTweet(tweetBody, replyToTweetId, new JsonHttpResponseHandler() { // @Override // public void onSuccess(int statusCode, Header[] headers, // JSONObject response) { // onSuccess(response); // } // @Override // public void onFailure(int statusCode, Header[] headers, // Throwable throwable, JSONObject errorResponse) { // onFailure(throwable, errorResponse); // } @Override public void onSuccess(JSONObject arg0) { onSuccessfullPost(Tweet.fromJSON(arg0)); } @Override public void onFailure(Throwable e, JSONObject error) { Log.d("DEBUG", "POST Tweet Error :" + error.toString()); Log.e("ERROR", "Exception while posting tweet", e); } }); } private void onSuccessfullPost(Tweet tweet) { tweet.save(); OnNewTweetListener listner = (OnNewTweetListener) getActivity(); listner.onNewTweet(tweet); Toast.makeText(activity, "Tweet successfully posted", Toast.LENGTH_LONG).show(); dismiss(); } public void postTweet(String tweetBody) { client.postTweet(tweetBody, new JsonHttpResponseHandler() { // @Override // public void onSuccess(int statusCode, Header[] headers, // JSONObject response) { // onSuccess(response); // } // @Override // public void onFailure(int statusCode, Header[] headers, // Throwable throwable, JSONObject errorResponse) { // onFailure(throwable, errorResponse); // } @Override public void onSuccess(JSONObject arg0) { onSuccessfullPost(Tweet.fromJSON(arg0)); } @Override public void onFailure(Throwable e, JSONObject error) { Log.d("DEBUG", "POST Tweet Error :" + error.toString()); Log.e("ERROR", "Exception while posting tweet", e); } }); } private void populateData() { ImageLoader imageLoader = ImageLoader.getInstance(); imageLoader.displayImage(currentUser.getProfileImageUrl(), currentUserProfilePic); StringBuilder mentions = new StringBuilder(); username.setText(currentUser.getName()); userScreenName.setText("@" + currentUser.getScreenName()); userScreenName.setTextColor(tweetTextara.getHintTextColors()); if (replyToScreenNames != null && replyToScreenNames.size() > 0) { for (String screenName : replyToScreenNames) { mentions.append("@" + screenName); mentions.append(" "); } String metionStr = mentions.toString(); tweetTextara.setText(metionStr); tweetTextara.setSelection(metionStr.length()); } Util.showSoftKeyboard(tweetTextara, activity); } private void getUserAccountDetails() { client = new TwitterClient(this.activity); client.getMyAccountInfo(new JsonHttpResponseHandler() { @Override public void onSuccess(JSONObject json) { currentUser = User.fromJson(json); populateData(); } //@Override public void onFailure(Throwable e, JSONObject error) { Log.d("DEBUG", "getAccountDetails Error :" + error.toString()); Log.e("ERROR", "Exception while getting user Profile", e); } }); } }