Java tutorial
/* * Copyright 2013 Matthew Precious * * 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 com.mattprecious.notisync.fragment; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.app.Fragment; import android.support.v4.content.LocalBroadcastManager; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.ListView; import android.widget.TextView; //import com.google.analytics.tracking.android.EasyTracker; import com.google.common.collect.Lists; import com.mattprecious.notisync.R; import com.mattprecious.notisync.activity.MainActivity; import com.mattprecious.notisync.db.DbAdapter; import com.mattprecious.notisync.model.SecondaryProfile; import com.mattprecious.notisync.profile.SecondaryCustomProfileActivity; import com.mattprecious.notisync.util.UndoBarController; import org.jraf.android.backport.switchwidget.Switch; import java.util.List; public class SecondaryCustomProfileListFragment extends Fragment implements UndoBarController.UndoListener { @SuppressWarnings("unused") private final String TAG = getClass().getName(); private DbAdapter dbAdapter; private LocalBroadcastManager broadcastManager; private ListView listView; private CustomProfileAdapter listAdapter; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.custom_list, container, false); dbAdapter = new DbAdapter(getActivity()); broadcastManager = LocalBroadcastManager.getInstance(getActivity()); broadcastManager.registerReceiver(profileUpdateReceiver, new IntentFilter(DbAdapter.ACTION_PROFILES_UPDATED)); listAdapter = new CustomProfileAdapter(getActivity()); listView = (ListView) view.findViewById(R.id.list); View footer = inflater.inflate(R.layout.custom_footer, listView, false); listView.addFooterView(footer); listView.setAdapter(listAdapter); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent intent = new Intent(getActivity(), SecondaryCustomProfileActivity.class); if (position < listView.getCount() - listView.getFooterViewsCount()) { SecondaryProfile profile = (SecondaryProfile) parent.getItemAtPosition(position); intent.putExtra("profile", profile); } getActivity().startActivityForResult(intent, MainActivity.REQUEST_CODE_EDIT_PROFILE); } }); return view; } @Override public void onStart() { super.onStart(); //EasyTracker.getInstance().setContext(getActivity()); //EasyTracker.getTracker().sendView(getClass().getSimpleName()); } @Override public void onResume() { super.onResume(); reloadProfiles(); } @Override public void onDestroy() { super.onDestroy(); try { broadcastManager.unregisterReceiver(profileUpdateReceiver); } catch (IllegalArgumentException e) { } } private void reloadProfiles() { dbAdapter.openReadable(); List<SecondaryProfile> profiles = dbAdapter.getSecondaryProfiles(); dbAdapter.close(); listAdapter.setData(profiles); listAdapter.notifyDataSetChanged(); } @Override public void onUndo(Parcelable token) { SecondaryProfile profile = (SecondaryProfile) token; dbAdapter.openWritable(); dbAdapter.insertSecondaryProfile(profile); dbAdapter.close(); reloadProfiles(); } private BroadcastReceiver profileUpdateReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { reloadProfiles(); } }; private class CustomProfileAdapter extends BaseAdapter { private LayoutInflater inflater; private List<SecondaryProfile> data; public CustomProfileAdapter(Context context) { inflater = LayoutInflater.from(context); data = Lists.newArrayList(); } public void setData(List<SecondaryProfile> data) { this.data = data; } @Override public int getCount() { return data.size(); } @Override public SecondaryProfile getItem(int position) throws IndexOutOfBoundsException { return data.get(position); } @Override public long getItemId(int position) throws IndexOutOfBoundsException { if (position < getCount() && position >= 0) { return position; } else { throw new IndexOutOfBoundsException(); } } @Override public int getViewTypeCount() { return 1; } @Override public View getView(int position, View convertView, ViewGroup parent) { SecondaryProfile profile = getItem(position); if (convertView == null) { // If the View is not cached // Inflates the Common View from XML file convertView = this.inflater.inflate(R.layout.profile_list_item, null); } convertView.setTag(profile); TextView nameView = (TextView) convertView.findViewById(R.id.profile_name); nameView.setText(profile.getName()); nameView.setEnabled(profile.isEnabled()); Switch profileSwitch = (Switch) convertView.findViewById(R.id.profile_switch); profileSwitch.setChecked(profile.isEnabled()); profileSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO: not this View parent = (View) buttonView.getParent().getParent(); SecondaryProfile profile = (SecondaryProfile) parent.getTag(); // Nasty infinite loop here... updating the profile sends a // broadcast which we receive and then refresh our list // which recreates the view which recycles the convertView // where we then call setEnabled() on a switch which already // has a change listener set which updates the profile which // sends a broadcast... if (profile.isEnabled() != isChecked) { profile.setEnabled(isChecked); // TODO: not this parent.findViewById(R.id.profile_name).setEnabled(isChecked); dbAdapter.openWritable(); dbAdapter.updateSecondaryProfile(profile); dbAdapter.close(); } } }); View switchWrapper = convertView.findViewById(R.id.switch_wrapper); switchWrapper.setTag(profileSwitch); switchWrapper.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { ((Switch) v.getTag()).performClick(); } }); return convertView; } } }