Java tutorial
/* * Copyright (C) 2010 Daniel Jacobi * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package de.questmaster.fatremote.fragments; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.res.Configuration; import android.media.AudioManager; import android.os.Build; import android.os.Bundle; import android.os.Vibrator; import android.provider.Settings; import android.support.v4.app.Fragment; import android.text.Editable; import android.text.TextWatcher; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import de.questmaster.fatremote.DebugHelper; import de.questmaster.fatremote.FatRemoteSettings; import de.questmaster.fatremote.FatRemoteSettings.AppSettings; import de.questmaster.fatremote.NetworkProxy; import de.questmaster.fatremote.R; import de.questmaster.fatremote.SelectFATActivity; import de.questmaster.fatremote.datastructures.FATRemoteEvent; public class RemoteFragment extends Fragment implements View.OnClickListener { protected static final String INTENT_ALLFATS = "de.questmaster.fatremote.fats"; public static final int ON_SETTINGS_CHANGE = 0; private AppSettings mSettings = new FatRemoteSettings.AppSettings(); private AudioManager mAudioManager = null; private Activity c = null; private short keyCode; private short keyModifier; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // enable options menu this.setHasOptionsMenu(true); // set activity c = this.getActivity(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); if (container == null) { // We have different layouts, and in one of them this // fragment's containing frame doesn't exist. The fragment // may still be created from its saved state, but there is // no reason to try to create its view hierarchy because it // won't be displayed. Note this is not needed -- we could // just run the code below, where we would create and return // the view hierarchy; it would just never be used. return null; } // Inflate the layout for this fragment return inflater.inflate(R.layout.remote_fragment, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); /* start audio */ mAudioManager = (AudioManager) c.getSystemService(Context.AUDIO_SERVICE); mAudioManager.loadSoundEffects(); /* read Settings */ mSettings.readSettings(c); /* setup onClickListener for remote buttons */ ((ImageView) c.findViewById(R.id.remote_button_power)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_up)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_home)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_left)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_ok)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_right)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_back)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_down)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_info)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.textButton)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_rew)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_menu)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_fwd)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_prev)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_play)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_next)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_volup)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_stop)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_zoomup)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_voldown)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_mute)).setOnClickListener(this); ((ImageView) c.findViewById(R.id.remote_button_zoomdown)).setOnClickListener(this); /* setup key listener */ EditText text = (EditText) c.findViewById(R.id.enterText); text.setOnEditorActionListener(new TextView.OnEditorActionListener() { public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) { hideKeyboard(); return true; } return false; } }); text.addTextChangedListener(determineKeyboardTextChangedListener()); text.setFocusable(true); // check if WIFI available if (!NetworkProxy.getInstance(c).isWifiEnabled()) { Toast.makeText(c, R.string.app_err_enwifi, Toast.LENGTH_LONG).show(); } } @Override public void onStop() { super.onStop(); NetworkProxy.getInstance(c).dismissRemoteEvents(); } private TextWatcher determineKeyboardTextChangedListener() { TextWatcher tw = null; //check for bad keyboards boolean hwKeyboardShown = getActivity().getResources() .getConfiguration().hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO; String swKeyboardName = Settings.Secure.getString(getActivity().getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD); if (!hwKeyboardShown && swKeyboardName.contains("nuance.xt9")) { // ASUS Transformer Prime SoftKeyboard tw = new TextWatcher() { public void afterTextChanged(Editable s) { } public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void onTextChanged(CharSequence s, int start, int before, int count) { int diff = count - before; if (s.length() > 0) { // Send Character keyCode = 0xf9; if (diff > 0) { // +1 keyModifier = (short) Character.codePointAt(s, before); } else if (diff < 0) { // -1 keyModifier = (short) 0x7f; // backspace } else { keyModifier = (short) 0x0a; // enter } // send keyCode invokeSend(); } } }; } else { // Android Default Behaviour tw = new TextWatcher() { public void afterTextChanged(Editable s) { } public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void onTextChanged(CharSequence s, int start, int before, int count) { if (s.length() > 0 || before != 0) { // Send Character keyCode = 0xf9; if (before == 0) { keyModifier = (short) Character.codePointAt(s, start); } else if (start == 0) { keyModifier = 0x0a; // enter } else { keyModifier = (short) 0x7f; // backspace } // send keyCode invokeSend(); } } }; } return tw; } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.options_menu, menu); // For Honeycomb and up if (Build.VERSION.SDK_INT >= 11) { MenuItem mi = menu.findItem(R.id.MENU_ITEM_SELECTFAT); mi.setVisible(false); } // For testing purpose if (DebugHelper.SHOW_DEBUG_SCREEN) { MenuItem mi = menu.findItem(R.id.MENU_ITEM_DEBUG); mi.setVisible(true); } } /** * Define menu action * * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem) */ @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: case R.id.MENU_ITEM_SELECTFAT: { Intent selectFAT = new Intent(Intent.ACTION_PICK); selectFAT.setClass(c, SelectFATActivity.class); selectFAT.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(selectFAT); break; } case R.id.MENU_ITEM_SETTINGS: { Intent iSettings = new Intent(); iSettings.setClass(c, FatRemoteSettings.class); startActivityForResult(iSettings, ON_SETTINGS_CHANGE); break; } case R.id.MENU_ITEM_DEBUG: { c.setContentView(R.layout.debug); break; } default: // should not happen break; } return super.onOptionsItemSelected(item); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case ON_SETTINGS_CHANGE: { mSettings.readSettings(c); break; } default: // should not happen break; } } private void showKeyboard() { // show edittext and give it focus ImageView button = (ImageView) c.findViewById(R.id.textButton); EditText text = (EditText) c.findViewById(R.id.enterText); button.setVisibility(View.GONE); text.setVisibility(View.VISIBLE); text.requestFocus(); // show keyboard InputMethodManager mgr = (InputMethodManager) c.getSystemService(Context.INPUT_METHOD_SERVICE); mgr.toggleSoftInput(0, 0); } private void hideKeyboard() { EditText text = (EditText) c.findViewById(R.id.enterText); ImageView button = (ImageView) c.findViewById(R.id.textButton); // clear entered Text text.setText(""); // hide text field text.setVisibility(View.GONE); button.setVisibility(View.VISIBLE); // hide keyboard InputMethodManager mgr = (InputMethodManager) c.getSystemService(Context.INPUT_METHOD_SERVICE); mgr.hideSoftInputFromWindow(text.getApplicationWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } @Override public void onClick(View v) { // show button again EditText text = (EditText) c.findViewById(R.id.enterText); if (text.getVisibility() == View.VISIBLE) { hideKeyboard(); } // solve to code if (v instanceof ImageView) { ImageView bv = (ImageView) v; // NOSONAR String t = (String) bv.getTag(); if (t.equals("text")) { showKeyboard(); return; } else { keyCode = Integer.decode(t).shortValue(); } } keyModifier = 0x00; // send keyCode invokeSend(); } private void invokeSend() { // ring / vibrate if (!mSettings.isOverride() && mAudioManager.getStreamVolume(AudioManager.STREAM_SYSTEM) != 0 || (mSettings.isOverride() && mSettings.isTone())) { mAudioManager.playSoundEffect(AudioManager.FX_KEY_CLICK, 0.5f); } if (mSettings.isVibrate()) { Vibrator vibrator = (Vibrator) c.getSystemService(Context.VIBRATOR_SERVICE); vibrator.vibrate(25); } // Set sending image ImageView sending = (ImageView) c.findViewById(R.id.sendLED); sending.setImageResource(R.drawable.light_highlight); sending.invalidate(); // start sending NetworkProxy.getInstance(c).addRemoteEvent(new FATRemoteEvent(keyCode, keyModifier)); } }