Java tutorial
/* * Copyright 2009 Andrew Shu * * This file is part of "diode". * * "diode" 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. * * "diode" 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 "diode". If not, see <http://www.gnu.org/licenses/>. */ package in.shick.diode.submit; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.List; import java.util.StringTokenizer; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.http.HttpEntity; import org.apache.http.HttpException; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.message.BasicNameValuePair; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.apache.http.protocol.HTTP; import android.app.Activity; import android.app.Dialog; import android.app.ProgressDialog; import android.app.TabActivity; import android.content.Intent; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.ContextThemeWrapper; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.webkit.CookieSyncManager; import android.widget.Button; import android.widget.EditText; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; import android.widget.TextView; import android.widget.Toast; import in.shick.diode.R; import in.shick.diode.captcha.CaptchaCheckRequiredTask; import in.shick.diode.captcha.CaptchaDownloadTask; import in.shick.diode.comments.CommentsListActivity; import in.shick.diode.common.Common; import in.shick.diode.common.Constants; import in.shick.diode.common.RedditIsFunHttpClientFactory; import in.shick.diode.common.util.StringUtils; import in.shick.diode.common.util.Util; import in.shick.diode.login.LoginDialog; import in.shick.diode.login.LoginTask; import in.shick.diode.mail.PeekEnvelopeTask; import in.shick.diode.reddits.PickSubredditActivity; import in.shick.diode.settings.RedditSettings; import in.shick.diode.things.ThingInfo; public class SubmitLinkActivity extends TabActivity { private static final String TAG = "SubmitLinkActivity"; // Group 1: Subreddit. Group 2: thread id (no t3_ prefix) private final Pattern NEW_THREAD_PATTERN = Pattern.compile(Constants.COMMENT_PATH_PATTERN_STRING); // Group 1: whole error. Group 2: the time part private final Pattern RATELIMIT_RETRY_PATTERN = Pattern .compile("(you are trying to submit too fast. try again in (.+?)\\.)"); // Group 1: Subreddit private final Pattern SUBMIT_PATH_PATTERN = Pattern.compile("/(?:r/([^/]+)/)?submit/?"); TabHost mTabHost; private RedditSettings mSettings = new RedditSettings(); private final HttpClient mClient = RedditIsFunHttpClientFactory.getGzipHttpClient(); private String mSubmitUrl; private volatile String mCaptchaIden = null; private volatile String mCaptchaUrl = null; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); CookieSyncManager.createInstance(getApplicationContext()); mSettings.loadRedditPreferences(this, mClient); setRequestedOrientation(mSettings.getRotation()); setTheme(mSettings.getTheme()); setContentView(R.layout.submit_link_main); final FrameLayout fl = (FrameLayout) findViewById(android.R.id.tabcontent); if (Util.isLightTheme(mSettings.getTheme())) { fl.setBackgroundResource(R.color.gray_75); } else { fl.setBackgroundResource(R.color.black); } mTabHost = getTabHost(); mTabHost.addTab( mTabHost.newTabSpec(Constants.TAB_LINK).setIndicator("link").setContent(R.id.submit_link_view)); mTabHost.addTab( mTabHost.newTabSpec(Constants.TAB_TEXT).setIndicator("text").setContent(R.id.submit_text_view)); mTabHost.setOnTabChangedListener(new OnTabChangeListener() { public void onTabChanged(String tabId) { // Copy everything (except url and text) from old tab to new tab final EditText submitLinkTitle = (EditText) findViewById(R.id.submit_link_title); final EditText submitLinkReddit = (EditText) findViewById(R.id.submit_link_reddit); final EditText submitTextTitle = (EditText) findViewById(R.id.submit_text_title); final EditText submitTextReddit = (EditText) findViewById(R.id.submit_text_reddit); if (Constants.TAB_LINK.equals(tabId)) { submitLinkTitle.setText(submitTextTitle.getText()); submitLinkReddit.setText(submitTextReddit.getText()); } else { submitTextTitle.setText(submitLinkTitle.getText()); submitTextReddit.setText(submitLinkReddit.getText()); } } }); mTabHost.setCurrentTab(0); if (mSettings.isLoggedIn()) { start(); } else { showDialog(Constants.DIALOG_LOGIN); } } @Override public void onResume() { super.onResume(); CookieSyncManager.getInstance().startSync(); } @Override protected void onPause() { super.onPause(); mSettings.saveRedditPreferences(this); CookieSyncManager.getInstance().stopSync(); } private class SubmissionProperties { private String title = ""; private String url = ""; } /** * Enable the UI after user is logged in. */ private void start() { // Intents can be external (browser share page) or from Reddit is fun. String intentAction = getIntent().getAction(); if (Intent.ACTION_SEND.equals(intentAction)) { // Share Bundle extras = getIntent().getExtras(); SubmissionProperties submissionProperties = new SubmissionProperties(); boolean ignored = defaultExtractProperties(extras, submissionProperties) || lastDitchExtractProperties(extras, submissionProperties); final EditText submitLinkUrl = (EditText) findViewById(R.id.submit_link_url); final EditText submitLinkReddit = (EditText) findViewById(R.id.submit_link_reddit); final EditText submitLinkTitle = (EditText) findViewById(R.id.submit_link_title); final EditText submitTextReddit = (EditText) findViewById(R.id.submit_text_reddit); submitLinkUrl.setText(submissionProperties.url); submitLinkReddit.setText(""); submitTextReddit.setText(""); submitLinkTitle.setText(submissionProperties.title); mSubmitUrl = Constants.REDDIT_BASE_URL + "/submit"; } else { String submitPath = null; Uri data = getIntent().getData(); if (data != null && Util.isRedditUri(data)) submitPath = data.getPath(); if (submitPath == null) submitPath = "/submit"; // the URL to do HTTP POST to mSubmitUrl = Util.absolutePathToURL(submitPath); // Put the subreddit in the text field final EditText submitLinkReddit = (EditText) findViewById(R.id.submit_link_reddit); final EditText submitTextReddit = (EditText) findViewById(R.id.submit_text_reddit); Matcher m = SUBMIT_PATH_PATTERN.matcher(submitPath); if (m.matches()) { String subreddit = m.group(1); if (StringUtils.isEmpty(subreddit)) { submitLinkReddit.setText(""); submitTextReddit.setText(""); } else { submitLinkReddit.setText(subreddit); submitTextReddit.setText(subreddit); } } } final Button submitLinkButton = (Button) findViewById(R.id.submit_link_button); submitLinkButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (validateLinkForm()) { final EditText submitLinkTitle = (EditText) findViewById(R.id.submit_link_title); final EditText submitLinkUrl = (EditText) findViewById(R.id.submit_link_url); final EditText submitLinkReddit = (EditText) findViewById(R.id.submit_link_reddit); final EditText submitLinkCaptcha = (EditText) findViewById(R.id.submit_link_captcha); new SubmitLinkTask(submitLinkTitle.getText().toString(), submitLinkUrl.getText().toString(), submitLinkReddit.getText().toString(), Constants.SUBMIT_KIND_LINK, submitLinkCaptcha.getText().toString()).execute(); } } }); final Button submitTextButton = (Button) findViewById(R.id.submit_text_button); submitTextButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (validateTextForm()) { final EditText submitTextTitle = (EditText) findViewById(R.id.submit_text_title); final EditText submitTextText = (EditText) findViewById(R.id.submit_text_text); final EditText submitTextReddit = (EditText) findViewById(R.id.submit_text_reddit); final EditText submitTextCaptcha = (EditText) findViewById(R.id.submit_text_captcha); new SubmitLinkTask(submitTextTitle.getText().toString(), submitTextText.getText().toString(), submitTextReddit.getText().toString(), Constants.SUBMIT_KIND_SELF, submitTextCaptcha.getText().toString()).execute(); } } }); // Check the CAPTCHA new MyCaptchaCheckRequiredTask().execute(); } private boolean defaultExtractProperties(Bundle extras, SubmissionProperties properties) { if (null == extras) { return false; } String url = extras.getString(Intent.EXTRA_TEXT); String title = extras.getString(Intent.EXTRA_SUBJECT); if ((null == url) || (null == title)) { return false; } try { new URL(url); } catch (MalformedURLException e) { return false; } properties.url = url; properties.title = title; return true; } private boolean lastDitchExtractProperties(Bundle extras, SubmissionProperties properties) { if (extras != null) { // find the most likely submission URL since some // programs share more than the URL // the most likely is considered to be the longest // string token with a URI scheme of http or https StringBuilder titleBuilder = new StringBuilder(); String rawText = extras.getString(Intent.EXTRA_TEXT); StringTokenizer extraTextTokenizer = new StringTokenizer(rawText); Uri bestUri = Uri.parse(""); while (extraTextTokenizer.hasMoreTokens()) { Uri uri = Uri.parse(extraTextTokenizer.nextToken()); if (!"http".equalsIgnoreCase(uri.getScheme()) && !"https".equalsIgnoreCase(uri.getScheme())) { titleBuilder.append(uri.toString()).append(' '); continue; } if (uri.toString().length() > bestUri.toString().length()) { bestUri = uri; } } properties = new SubmissionProperties(); properties.url = bestUri.toString(); properties.title = titleBuilder.toString(); return true; } return false; } private void returnStatus(int status) { Intent i = new Intent(); setResult(status, i); finish(); } private class MyLoginTask extends LoginTask { public MyLoginTask(String username, String password) { super(username, password, mSettings, mClient, getApplicationContext()); } @Override protected void onPreExecute() { showDialog(Constants.DIALOG_LOGGING_IN); } @Override protected void onPostExecute(Boolean success) { removeDialog(Constants.DIALOG_LOGGING_IN); if (success) { Toast.makeText(SubmitLinkActivity.this, "Logged in as " + mUsername, Toast.LENGTH_SHORT).show(); // Check mail new PeekEnvelopeTask(SubmitLinkActivity.this, mClient, mSettings.getMailNotificationStyle()) .execute(); // Show the UI and allow user to proceed start(); } else { Common.showErrorToast(mUserError, Toast.LENGTH_LONG, SubmitLinkActivity.this); returnStatus(Constants.RESULT_LOGIN_REQUIRED); } } } private class SubmitLinkTask extends AsyncTask<Void, Void, ThingInfo> { String _mTitle, _mUrlOrText, _mSubreddit, _mKind, _mCaptcha; String _mUserError = "Error creating submission. Please try again."; SubmitLinkTask(String title, String urlOrText, String subreddit, String kind, String captcha) { _mTitle = title; _mUrlOrText = urlOrText; _mSubreddit = subreddit; _mKind = kind; _mCaptcha = captcha; } @Override public ThingInfo doInBackground(Void... voidz) { ThingInfo newlyCreatedThread = null; HttpEntity entity = null; String status = ""; if (!mSettings.isLoggedIn()) { _mUserError = "Not logged in"; return null; } // Update the modhash if necessary if (mSettings.getModhash() == null) { String modhash = Common.doUpdateModhash(mClient); if (modhash == null) { // doUpdateModhash should have given an error about credentials Common.doLogout(mSettings, mClient, getApplicationContext()); if (Constants.LOGGING) Log.e(TAG, "Reply failed because doUpdateModhash() failed"); return null; } mSettings.setModhash(modhash); } try { // Construct data List<NameValuePair> nvps = new ArrayList<NameValuePair>(); nvps.add(new BasicNameValuePair("sr", _mSubreddit.toString())); nvps.add(new BasicNameValuePair("r", _mSubreddit.toString())); nvps.add(new BasicNameValuePair("title", _mTitle.toString())); nvps.add(new BasicNameValuePair("kind", _mKind.toString())); // Put a url or selftext based on the kind of submission if (Constants.SUBMIT_KIND_LINK.equals(_mKind)) nvps.add(new BasicNameValuePair("url", _mUrlOrText.toString())); else // if (Constants.SUBMIT_KIND_SELF.equals(_mKind)) nvps.add(new BasicNameValuePair("text", _mUrlOrText.toString())); nvps.add(new BasicNameValuePair("uh", mSettings.getModhash().toString())); if (mCaptchaIden != null) { nvps.add(new BasicNameValuePair("iden", mCaptchaIden)); nvps.add(new BasicNameValuePair("captcha", _mCaptcha.toString())); } // Votehash is currently unused by reddit // nvps.add(new BasicNameValuePair("vh", "0d4ab0ffd56ad0f66841c15609e9a45aeec6b015")); HttpPost httppost = new HttpPost(Constants.REDDIT_BASE_URL + "/api/submit"); httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8)); // The progress dialog is non-cancelable, so set a shorter timeout than system's HttpParams params = httppost.getParams(); HttpConnectionParams.setConnectionTimeout(params, 30000); HttpConnectionParams.setSoTimeout(params, 30000); if (Constants.LOGGING) Log.d(TAG, nvps.toString()); // Perform the HTTP POST request HttpResponse response = mClient.execute(httppost); status = response.getStatusLine().toString(); if (!status.contains("OK")) throw new HttpException(status); entity = response.getEntity(); BufferedReader in = new BufferedReader(new InputStreamReader(entity.getContent())); String line = in.readLine(); in.close(); if (StringUtils.isEmpty(line)) { throw new HttpException("No content returned from reply POST"); } if (line.contains("WRONG_PASSWORD")) { throw new Exception("Wrong password"); } if (line.contains("USER_REQUIRED")) { // The modhash probably expired mSettings.setModhash(null); throw new Exception("User required. Huh?"); } if (line.contains("SUBREDDIT_NOEXIST")) { _mUserError = "That subreddit does not exist."; throw new Exception("SUBREDDIT_NOEXIST: " + _mSubreddit); } if (line.contains("SUBREDDIT_NOTALLOWED")) { _mUserError = "You are not allowed to post to that subreddit."; throw new Exception("SUBREDDIT_NOTALLOWED: " + _mSubreddit); } if (Constants.LOGGING) Common.logDLong(TAG, line); String newId, newSubreddit; Matcher idMatcher = NEW_THREAD_PATTERN.matcher(line); if (idMatcher.find()) { newSubreddit = idMatcher.group(1); newId = idMatcher.group(2); } else { if (line.contains("RATELIMIT")) { // Try to find the # of minutes using regex Matcher rateMatcher = RATELIMIT_RETRY_PATTERN.matcher(line); if (rateMatcher.find()) _mUserError = rateMatcher.group(1); else _mUserError = "you are trying to submit too fast. try again in a few minutes."; throw new Exception(_mUserError); } if (line.contains("BAD_CAPTCHA")) { _mUserError = "Bad CAPTCHA. Try again."; new MyCaptchaDownloadTask().execute(); } throw new Exception("No id returned by reply POST."); } entity.consumeContent(); // Getting here means success. Create a new ThingInfo. newlyCreatedThread = new ThingInfo(); // We only need to fill in a few fields. newlyCreatedThread.setId(newId); newlyCreatedThread.setSubreddit(newSubreddit); newlyCreatedThread.setTitle(_mTitle.toString()); return newlyCreatedThread; } catch (Exception e) { if (entity != null) { try { entity.consumeContent(); } catch (Exception e2) { if (Constants.LOGGING) Log.e(TAG, "entity.consumeContent()", e2); } } if (Constants.LOGGING) Log.e(TAG, "SubmitLinkTask", e); } return null; } @Override public void onPreExecute() { showDialog(Constants.DIALOG_SUBMITTING); } @Override public void onPostExecute(ThingInfo newlyCreatedThread) { removeDialog(Constants.DIALOG_SUBMITTING); if (newlyCreatedThread == null) { Common.showErrorToast(_mUserError, Toast.LENGTH_LONG, SubmitLinkActivity.this); } else { // Success. Return the subreddit and thread id Intent i = new Intent(getApplicationContext(), CommentsListActivity.class); i.setData(Util.createThreadUri(newlyCreatedThread)); i.putExtra(Constants.EXTRA_SUBREDDIT, newlyCreatedThread.getSubreddit()); i.putExtra(Constants.EXTRA_TITLE, newlyCreatedThread.getTitle()); i.putExtra(Constants.EXTRA_NUM_COMMENTS, 0); startActivity(i); finish(); } } } private class MyCaptchaCheckRequiredTask extends CaptchaCheckRequiredTask { public MyCaptchaCheckRequiredTask() { super(mSubmitUrl, mClient); } @Override protected void saveState() { SubmitLinkActivity.this.mCaptchaIden = _mCaptchaIden; SubmitLinkActivity.this.mCaptchaUrl = _mCaptchaUrl; } @Override public void onPreExecute() { // Hide submit buttons so user can't submit until we know whether he needs captcha final Button submitLinkButton = (Button) findViewById(R.id.submit_link_button); final Button submitTextButton = (Button) findViewById(R.id.submit_text_button); submitLinkButton.setVisibility(View.GONE); submitTextButton.setVisibility(View.GONE); // Show "loading captcha" label final TextView loadingLinkCaptcha = (TextView) findViewById(R.id.submit_link_captcha_loading); final TextView loadingTextCaptcha = (TextView) findViewById(R.id.submit_text_captcha_loading); loadingLinkCaptcha.setVisibility(View.VISIBLE); loadingTextCaptcha.setVisibility(View.VISIBLE); } @Override public void onPostExecute(Boolean required) { final TextView linkCaptchaLabel = (TextView) findViewById(R.id.submit_link_captcha_label); final ImageView linkCaptchaImage = (ImageView) findViewById(R.id.submit_link_captcha_image); final EditText linkCaptchaEdit = (EditText) findViewById(R.id.submit_link_captcha); final TextView textCaptchaLabel = (TextView) findViewById(R.id.submit_text_captcha_label); final ImageView textCaptchaImage = (ImageView) findViewById(R.id.submit_text_captcha_image); final EditText textCaptchaEdit = (EditText) findViewById(R.id.submit_text_captcha); final TextView loadingLinkCaptcha = (TextView) findViewById(R.id.submit_link_captcha_loading); final TextView loadingTextCaptcha = (TextView) findViewById(R.id.submit_text_captcha_loading); final Button submitLinkButton = (Button) findViewById(R.id.submit_link_button); final Button submitTextButton = (Button) findViewById(R.id.submit_text_button); if (required == null) { Common.showErrorToast("Error retrieving captcha. Use the menu to try again.", Toast.LENGTH_LONG, SubmitLinkActivity.this); return; } if (required) { linkCaptchaLabel.setVisibility(View.VISIBLE); linkCaptchaImage.setVisibility(View.VISIBLE); linkCaptchaEdit.setVisibility(View.VISIBLE); textCaptchaLabel.setVisibility(View.VISIBLE); textCaptchaImage.setVisibility(View.VISIBLE); textCaptchaEdit.setVisibility(View.VISIBLE); // Launch a task to download captcha and display it new MyCaptchaDownloadTask().execute(); } else { linkCaptchaLabel.setVisibility(View.GONE); linkCaptchaImage.setVisibility(View.GONE); linkCaptchaEdit.setVisibility(View.GONE); textCaptchaLabel.setVisibility(View.GONE); textCaptchaImage.setVisibility(View.GONE); textCaptchaEdit.setVisibility(View.GONE); } loadingLinkCaptcha.setVisibility(View.GONE); loadingTextCaptcha.setVisibility(View.GONE); submitLinkButton.setVisibility(View.VISIBLE); submitTextButton.setVisibility(View.VISIBLE); } } private class MyCaptchaDownloadTask extends CaptchaDownloadTask { public MyCaptchaDownloadTask() { super(mCaptchaUrl, mClient); } @Override public void onPostExecute(Drawable captcha) { if (captcha == null) { Common.showErrorToast("Error retrieving captcha. Use the menu to try again.", Toast.LENGTH_LONG, SubmitLinkActivity.this); return; } final ImageView linkCaptchaView = (ImageView) findViewById(R.id.submit_link_captcha_image); final ImageView textCaptchaView = (ImageView) findViewById(R.id.submit_text_captcha_image); linkCaptchaView.setImageDrawable(captcha); linkCaptchaView.setVisibility(View.VISIBLE); textCaptchaView.setImageDrawable(captcha); textCaptchaView.setVisibility(View.VISIBLE); } } @Override protected Dialog onCreateDialog(int id) { Dialog dialog = null; ProgressDialog pdialog; switch (id) { case Constants.DIALOG_LOGIN: dialog = new LoginDialog(this, mSettings, true) { @Override public void onLoginChosen(String user, String password) { removeDialog(Constants.DIALOG_LOGIN); new MyLoginTask(user, password).execute(); } }; break; // "Please wait" case Constants.DIALOG_LOGGING_IN: pdialog = new ProgressDialog(new ContextThemeWrapper(this, mSettings.getDialogTheme())); pdialog.setMessage("Logging in..."); pdialog.setIndeterminate(true); pdialog.setCancelable(true); dialog = pdialog; break; case Constants.DIALOG_SUBMITTING: pdialog = new ProgressDialog(new ContextThemeWrapper(this, mSettings.getDialogTheme())); pdialog.setMessage("Submitting..."); pdialog.setIndeterminate(true); pdialog.setCancelable(true); dialog = pdialog; break; default: break; } return dialog; } @Override protected void onPrepareDialog(int id, Dialog dialog) { super.onPrepareDialog(id, dialog); switch (id) { case Constants.DIALOG_LOGIN: if (mSettings.getUsername() != null) { final TextView loginUsernameInput = (TextView) dialog.findViewById(R.id.login_username_input); loginUsernameInput.setText(mSettings.getUsername()); } final TextView loginPasswordInput = (TextView) dialog.findViewById(R.id.login_password_input); loginPasswordInput.setText(""); break; default: break; } } private boolean validateLinkForm() { final EditText titleText = (EditText) findViewById(R.id.submit_link_title); final EditText urlText = (EditText) findViewById(R.id.submit_link_url); final EditText redditText = (EditText) findViewById(R.id.submit_link_reddit); if (StringUtils.isEmpty(titleText.getText())) { Common.showErrorToast("Please provide a title.", Toast.LENGTH_LONG, this); return false; } if (StringUtils.isEmpty(urlText.getText())) { Common.showErrorToast("Please provide a URL.", Toast.LENGTH_LONG, this); return false; } if (StringUtils.isEmpty(redditText.getText())) { Common.showErrorToast("Please provide a subreddit.", Toast.LENGTH_LONG, this); return false; } return true; } private boolean validateTextForm() { final EditText titleText = (EditText) findViewById(R.id.submit_text_title); final EditText redditText = (EditText) findViewById(R.id.submit_text_reddit); if (StringUtils.isEmpty(titleText.getText())) { Common.showErrorToast("Please provide a title.", Toast.LENGTH_LONG, this); return false; } if (StringUtils.isEmpty(redditText.getText())) { Common.showErrorToast("Please provide a subreddit.", Toast.LENGTH_LONG, this); return false; } return true; } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.submit_link, menu); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); if (mCaptchaUrl == null) menu.findItem(R.id.update_captcha_menu_id).setVisible(false); else menu.findItem(R.id.update_captcha_menu_id).setVisible(true); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.pick_subreddit_menu_id: Intent pickSubredditIntent = new Intent(getApplicationContext(), PickSubredditActivity.class); pickSubredditIntent.putExtra(Constants.EXTRA_HIDE_FAKE_SUBREDDITS_STRING, true); startActivityForResult(pickSubredditIntent, Constants.ACTIVITY_PICK_SUBREDDIT); break; case R.id.update_captcha_menu_id: new MyCaptchaCheckRequiredTask().execute(); break; case android.R.id.home: Common.goHome(this); break; default: throw new IllegalArgumentException("Unexpected action value " + item.getItemId()); } return true; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); switch (requestCode) { case Constants.ACTIVITY_PICK_SUBREDDIT: if (resultCode == Activity.RESULT_OK) { // Group 1: Subreddit. final Pattern REDDIT_PATH_PATTERN = Pattern.compile(Constants.REDDIT_PATH_PATTERN_STRING); Matcher redditContextMatcher = REDDIT_PATH_PATTERN.matcher(intent.getData().getPath()); if (redditContextMatcher.find()) { String newSubreddit = redditContextMatcher.group(1); final EditText linkSubreddit = (EditText) findViewById(R.id.submit_link_reddit); final EditText textSubreddit = (EditText) findViewById(R.id.submit_text_reddit); if (newSubreddit != null) { linkSubreddit.setText(newSubreddit); textSubreddit.setText(newSubreddit); } else { linkSubreddit.setText(""); textSubreddit.setText(""); } } } break; default: break; } } @Override protected void onRestoreInstanceState(Bundle state) { super.onRestoreInstanceState(state); final int[] myDialogs = { Constants.DIALOG_LOGGING_IN, Constants.DIALOG_LOGIN, Constants.DIALOG_SUBMITTING, }; for (int dialog : myDialogs) { try { removeDialog(dialog); } catch (IllegalArgumentException e) { // Ignore. } } } }