Java tutorial
/* * Copyright (C) 2012-2013 Dominik Schrmann <dominik@dominikschuermann.de> * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ package id.nci.stm_9; //import org.sufficientlysecure.keychain.Constants; import id.nci.stm_9.Log; import id.nci.stm_9.R; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.os.Message; import android.os.Messenger; import android.os.RemoteException; import android.support.v4.app.DialogFragment; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.WindowManager.LayoutParams; import android.view.inputmethod.EditorInfo; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import android.widget.TextView.OnEditorActionListener; public class SetPassphraseDialogFragment extends DialogFragment implements OnEditorActionListener { private static final String ARG_MESSENGER = "messenger"; private static final String ARG_TITLE = "title"; public static final int MESSAGE_OKAY = 1; public static final String MESSAGE_NEW_PASSPHRASE = "new_passphrase"; private Messenger mMessenger; private EditText mPassphraseEditText; private EditText mPassphraseAgainEditText; /** * Creates new instance of this dialog fragment * * @param title * title of dialog * @param messenger * to communicate back after setting the passphrase * @return */ public static SetPassphraseDialogFragment newInstance(Messenger messenger, int title) { SetPassphraseDialogFragment frag = new SetPassphraseDialogFragment(); Bundle args = new Bundle(); args.putInt(ARG_TITLE, title); args.putParcelable(ARG_MESSENGER, messenger); frag.setArguments(args); return frag; } /** * Creates dialog */ @Override public Dialog onCreateDialog(Bundle savedInstanceState) { final Activity activity = getActivity(); int title = getArguments().getInt(ARG_TITLE); mMessenger = getArguments().getParcelable(ARG_MESSENGER); AlertDialog.Builder alert = new AlertDialog.Builder(activity); alert.setTitle(title); alert.setMessage(R.string.enter_passphrase_twice); LayoutInflater inflater = activity.getLayoutInflater(); View view = inflater.inflate(R.layout.passphrase_repeat, null); alert.setView(view); mPassphraseEditText = (EditText) view.findViewById(R.id.passphrase_passphrase); mPassphraseAgainEditText = (EditText) view.findViewById(R.id.passphrase_passphrase_again); alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dismiss(); String passPhrase1 = mPassphraseEditText.getText().toString(); String passPhrase2 = mPassphraseAgainEditText.getText().toString(); if (!passPhrase1.equals(passPhrase2)) { Toast.makeText(activity, getString(R.string.error_message, getString(R.string.passphrases_do_not_match)), Toast.LENGTH_SHORT).show(); return; } if (passPhrase1.equals("")) { Toast.makeText(activity, getString(R.string.error_message, getString(R.string.passphrase_must_not_be_empty)), Toast.LENGTH_SHORT).show(); return; } // return resulting data back to activity Bundle data = new Bundle(); data.putString(MESSAGE_NEW_PASSPHRASE, passPhrase1); sendMessageToHandler(MESSAGE_OKAY, data); } }); alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dismiss(); } }); return alert.create(); } @Override public void onActivityCreated(Bundle arg0) { super.onActivityCreated(arg0); // request focus and open soft keyboard mPassphraseEditText.requestFocus(); getDialog().getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE); mPassphraseAgainEditText.setOnEditorActionListener(this); } /** * Associate the "done" button on the soft keyboard with the okay button in the view */ @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (EditorInfo.IME_ACTION_DONE == actionId) { AlertDialog dialog = ((AlertDialog) getDialog()); Button bt = dialog.getButton(AlertDialog.BUTTON_POSITIVE); bt.performClick(); return true; } return false; } /** * Send message back to handler which is initialized in a activity * * @param what * Message integer you want to send */ private void sendMessageToHandler(Integer what, Bundle data) { Message msg = Message.obtain(); msg.what = what; if (data != null) { msg.setData(data); } try { mMessenger.send(msg); } catch (RemoteException e) { Log.w("stm-9", "Exception sending message, Is handler present?", e); } catch (NullPointerException e) { Log.w("stm-9", "Messenger is null!", e); } } }