/***
Copyright (c) 2013 CommonsWare, LLC
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.
Covered in detail in the book _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/
package com.commonsware.android.drawer.activated;
import android.app.Activity;
import android.app.FragmentManager.OnBackStackChangedListener;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends Activity implements
OnItemClickListener, LoremFragment.Contract,
OnBackStackChangedListener {
static private final String STATE_CHECKED=
"com.commonsware.android.drawer.simple.STATE_CHECKED";
private DrawerLayout drawerLayout=null;
private ActionBarDrawerToggle toggle=null;
private LoremFragment lorem=null;
private ContentFragment content=null;
private ListView drawer=null;
private StuffFragment stuff=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawer=(ListView)findViewById(R.id.drawer);
drawer.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
String[] rows=getResources().getStringArray(R.array.drawer_rows);
drawer.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_row,
rows));
drawer.setOnItemClickListener(this);
drawerLayout=(DrawerLayout)findViewById(R.id.drawer_layout);
toggle=
new ActionBarDrawerToggle(this, drawerLayout,
R.drawable.ic_drawer,
R.string.drawer_open,
R.string.drawer_close);
drawerLayout.setDrawerListener(toggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
getFragmentManager().addOnBackStackChangedListener(this);
if (getFragmentManager().findFragmentById(R.id.content) == null) {
showLorem();
}
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
toggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
toggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (toggle.onOptionsItemSelected(item)) {
return(true);
}
return(super.onOptionsItemSelected(item));
}
@Override
public void onItemClick(AdapterView<?> listView, View row,
int position, long id) {
if (position == 0) {
showLorem();
}
else {
showContent();
}
drawerLayout.closeDrawers();
}
@Override
public void onBackStackChanged() {
drawer.post(onNavChange);
}
@Override
public void wordClicked() {
if (stuff == null) {
stuff=new StuffFragment();
}
getFragmentManager().beginTransaction()
.replace(R.id.content, stuff)
.addToBackStack(null).commit();
drawer.post(onNavChange);
}
private void showLorem() {
if (lorem == null) {
lorem=new LoremFragment();
}
if (!lorem.isVisible()) {
getFragmentManager().popBackStack();
getFragmentManager().beginTransaction()
.replace(R.id.content, lorem).commit();
drawer.post(onNavChange);
}
}
private void showContent() {
if (content == null) {
content=new ContentFragment();
}
if (!content.isVisible()) {
getFragmentManager().popBackStack();
getFragmentManager().beginTransaction()
.replace(R.id.content, content).commit();
drawer.post(onNavChange);
}
}
private Runnable onNavChange=new Runnable() {
@Override
public void run() {
if (lorem != null && lorem.isVisible()) {
drawer.setItemChecked(0, true);
}
else if (content != null && content.isVisible()) {
drawer.setItemChecked(1, true);
}
else {
int toClear=drawer.getCheckedItemPosition();
if (toClear >= 0) {
drawer.setItemChecked(toClear, false);
}
}
}
};
}