Java tutorial
/* * Copyright (C) 2014 IUH yber$oft Team * * 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 vn.cybersoft.obs.android.activities; import vn.cybersoft.obs.android.R; import vn.cybersoft.obs.android.provider.OptimalMode; import vn.cybersoft.obs.android.provider.PowerSchedule; import vn.cybersoft.obs.android.utilities.Utils; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.Loader; import android.support.v4.widget.ResourceCursorAdapter; import android.view.ContextMenu; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ContextMenu.ContextMenuInfo; import android.widget.AdapterView; import android.widget.TextView; import android.widget.ToggleButton; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; /** * @author Luan Vu (hlvu.cybersoft@gmail.com) * */ public class PowerScheduleActivity extends FragmentActivity implements OnItemClickListener, LoaderCallbacks<Cursor> { public static final int LAYOUT_ID = R.layout.schedule_layout; private static final int TIME_SCHEDULE_LIST_LOADER = 0x04; private LayoutInflater mInflater; private ListView mScheduleList; private ScheduleAdapter mSchedules; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(LAYOUT_ID); setTitle(getString(R.string.app_name) + " > " + getString(R.string.schedule_by_power)); mInflater = LayoutInflater.from(this); getSupportLoaderManager().initLoader(TIME_SCHEDULE_LIST_LOADER, null, this); mScheduleList = (ListView) findViewById(android.R.id.list); mSchedules = new ScheduleAdapter(this, R.layout.power_schedule_list_row); mScheduleList.setAdapter(mSchedules); mScheduleList.setVerticalScrollBarEnabled(true); mScheduleList.setOnItemClickListener(this); mScheduleList.setOnCreateContextMenuListener(this); View addSchedule = findViewById(R.id.add_schedule); addSchedule.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { addNewSchedule(); } }); // Make the entire view selected when focused. addSchedule.setOnFocusChangeListener(new View.OnFocusChangeListener() { public void onFocusChange(View v, boolean hasFocus) { v.setSelected(hasFocus); } }); } private void addNewSchedule() { startActivity(new Intent(this, SetPowerScheduleActivity.class)); } @Override public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfo) { // Inflate the menu from xml. getMenuInflater().inflate(R.menu.time_schedule_context_menu, menu); // Use the current item to create a custom view for the header. final AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo; final Cursor c = (Cursor) mScheduleList.getAdapter().getItem((int) info.position); final PowerSchedule schedule = new PowerSchedule(c); // Inflate the custom view and set each TextView's text. final View v = mInflater.inflate(R.layout.context_menu_header, null); TextView textView = (TextView) v.findViewById(R.id.header_time); textView.setText(getString(R.string.percentage, schedule.level)); textView = (TextView) v.findViewById(R.id.header_mode); textView.setText(Utils.getString(this, OptimalMode.getMode(getContentResolver(), schedule.modeId).name, R.string.class)); // Set the custom view on the menu. menu.setHeaderView(v); // Change the text based on the state of the schedule. if (schedule.enabled) { menu.findItem(R.id.enable_schedule).setTitle(R.string.disable_schedule); } } @Override public boolean onContextItemSelected(MenuItem item) { final AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); final long id = info.id; // Error check just in case. if (id == -1) { return super.onContextItemSelected(item); } switch (item.getItemId()) { case R.id.delete_schedule: // Confirm that the schedule will be deleted. new AlertDialog.Builder(this).setTitle(getString(R.string.delete_schedule)) .setMessage(getString(R.string.delete_schedule_confirm)) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface d, int w) { PowerSchedule.deleteSchedule(getContentResolver(), id); } }).setNegativeButton(android.R.string.cancel, null).show(); return true; case R.id.enable_schedule: final Cursor c = (Cursor) mScheduleList.getAdapter().getItem(info.position); final PowerSchedule schedule = new PowerSchedule(c); PowerSchedule.enableSchedule(getContentResolver(), schedule.id, !schedule.enabled); return true; case R.id.edit_schedule: Intent intent = new Intent(this, SetPowerScheduleActivity.class); intent.putExtra(PowerSchedule.EXTRA_ID, id); startActivity(intent); return true; default: break; } return super.onContextItemSelected(item); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent intent = new Intent(this, SetPowerScheduleActivity.class); intent.putExtra(PowerSchedule.EXTRA_ID, id); startActivity(intent); } @Override public Loader<Cursor> onCreateLoader(int id, Bundle bundle) { return PowerSchedule.getCursorLoader(this); } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) { mSchedules.swapCursor(cursor); } @Override public void onLoaderReset(Loader<Cursor> loader) { mSchedules.swapCursor(null); } private class ScheduleAdapter extends ResourceCursorAdapter { public ScheduleAdapter(Context context, int layout, Cursor c) { super(context, layout, c, 0); } public ScheduleAdapter(Context context, int layout) { super(context, layout, null, 0); } @Override public void bindView(View view, Context context, Cursor cursor) { final PowerSchedule schedule = new PowerSchedule(cursor); ToggleButton scheduleOnOff = (ToggleButton) view.findViewById(R.id.schedule_onOff); scheduleOnOff.setChecked(schedule.enabled); TextView powerLevel = (TextView) view.findViewById(R.id.battery_level); powerLevel.setText(getString(R.string.percentage, schedule.level)); TextView modeToChange = (TextView) view.findViewById(R.id.text2); final String modeNameStr = Utils.getString(mContext, OptimalMode.getMode(getContentResolver(), schedule.modeId).name, R.string.class); modeToChange.setText(getString(R.string.mode_to_change, modeNameStr)); } } }