Java tutorial
/** * Copyright (c) 2012 Aalto University and the authors * * 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. * * Authors: * Chaudhary Nalin (nalin.chaudhary@aalto.fi) * Chao Wei (chao.wei@aalto.fi) */ package org.sizzlelab.contextlogger.android; import org.holoeverywhere.widget.Switch; import org.sizzlelab.contextlogger.android.io.MainPipeline; import org.sizzlelab.contextlogger.android.utils.Constants; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.graphics.PixelFormat; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.view.Gravity; import android.view.KeyEvent; import android.view.View; import android.view.ViewGroup; import android.widget.CompoundButton.OnCheckedChangeListener; import com.actionbarsherlock.app.ActionBar; import com.actionbarsherlock.view.MenuItem; import fi.aalto.chaow.android.app.BaseFragmentActivity; import fi.aalto.chaow.android.app.BaseFragmentActivity.OnSupportFragmentListener; @Deprecated public class MainActivity extends BaseFragmentActivity implements OnSupportFragmentListener, Constants, OnSharedPreferenceChangeListener { private OnContextLoggerStatusChangeListener mLoggerStatusChangeListener = null; private ActionBar mActionBar = null; private Switch mSwitch = null; private View mSwitcherView = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_act); getWindow().setFormat(PixelFormat.RGBA_8888); initUI(); MainPipeline.getSystemPrefs(getApplicationContext()).registerOnSharedPreferenceChangeListener(this); } private void initUI() { // Set up the action bar. mActionBar = getSupportActionBar(); mActionBar.setDisplayShowTitleEnabled(true); mActionBar.setNavigationMode(ActionBar.DISPLAY_SHOW_CUSTOM); mActionBar.setHomeButtonEnabled(false); mActionBar.setDisplayShowCustomEnabled(true); mSwitcherView = getLayoutInflater().inflate(R.layout.logging_switcher, null); mSwitch = (Switch) mSwitcherView.findViewById(R.id.logger_switcher); mSwitch.setTextOn(getString(R.string.start)); mSwitch.setTextOff(getString(R.string.stop)); final ActionBar.LayoutParams lp = new ActionBar.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); lp.gravity = Gravity.RIGHT | Gravity.CENTER_VERTICAL; lp.setMargins(0, 0, 5, 0); mActionBar.setCustomView(mSwitcherView, lp); FragmentTransaction transaction = getSupportFragmentTransaction(); LoggerPanelFragment lpf = new LoggerPanelFragment(); mLoggerStatusChangeListener = (OnContextLoggerStatusChangeListener) lpf; mSwitch.setOnCheckedChangeListener((OnCheckedChangeListener) lpf); transaction.replace(R.id.screen_container, lpf, "loggerPanel"); transaction.commit(); } @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { final int itemId = item.getItemId(); if (itemId == android.R.id.home) { resetActionbar(); getSupportFragmentManager().popBackStack(); return true; } return super.onMenuItemSelected(featureId, item); } @Override public void onFragmentChanged(int layoutResId, Bundle args) { FragmentTransaction transaction = getSupportFragmentTransaction(); Fragment fragment = null; if (layoutResId == R.layout.logger_history) { fragment = new LoggerHistoryFragment(); } if (fragment != null) { if (args != null) { fragment.setArguments(args); } if (fragment instanceof LoggerHistoryFragment) { transaction.replace(R.id.screen_container, fragment, "loggerHistory"); constructActionbar(); } // Add to this transaction into BackStack transaction.addToBackStack(fragment.getTag()); transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); // Commit this transaction transaction.commit(); return; } } private void constructActionbar() { mActionBar.setHomeButtonEnabled(true); mActionBar.setDisplayHomeAsUpEnabled(true); mSwitcherView.setVisibility(View.INVISIBLE); } private void resetActionbar() { Fragment f = getSupportFragmentManager().findFragmentByTag("loggerHistory"); if (f != null) { if (f.isAdded()) { mActionBar.setHomeButtonEnabled(false); mActionBar.setDisplayHomeAsUpEnabled(false); mSwitcherView.setVisibility(View.VISIBLE); } } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { resetActionbar(); } return super.onKeyDown(keyCode, event); } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { if (MainPipeline.COUNT_KEY.equals(key)) { if (mLoggerStatusChangeListener != null) { mLoggerStatusChangeListener .onLoggerCountChanged(MainPipeline.getScanCount(getApplicationContext())); } } } public static interface OnContextLoggerStatusChangeListener { void onLoggerCountChanged(final long count); } }