Mega Code Archive
Save instance state
<![CDATA[
/* Copyright (c) 2008-2009 -- 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.
*/
package com.commonsware.android.rotation.one;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract.Contacts;
import android.view.View;
import android.widget.Button;
import android.util.Log;
public class RotationOneDemo extends Activity {
static final int PICK_REQUEST=1337;
Button viewButton=null;
Uri contact=null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn=(Button)findViewById(R.id.pick);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent i=new Intent(Intent.ACTION_PICK,
Contacts.CONTENT_URI);
startActivityForResult(i, PICK_REQUEST);
}
});
viewButton=(Button)findViewById(R.id.view);
viewButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
startActivity(new Intent(Intent.ACTION_VIEW, contact));
}
});
restoreMe(savedInstanceState);
viewButton.setEnabled(contact!=null);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode==PICK_REQUEST) {
if (resultCode==RESULT_OK) {
contact=data.getData();
viewButton.setEnabled(true);
}
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (contact!=null) {
outState.putString("contact", contact.toString());
}
}
private void restoreMe(Bundle state) {
contact=null;
if (state!=null) {
String contactUri=state.getString("contact");
if (contactUri!=null) {
contact=Uri.parse(contactUri);
}
}
}
}
//res\layout\main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/pick"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:text="Pick"
android:enabled="true"
/>
<Button android:id="@+id/view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:text="View"
android:enabled="false"
/>
</LinearLayout>
//res\layout-land\main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/pick"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:text="Pick"
android:enabled="true"
/>
<Button android:id="@+id/view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:text="View"
android:enabled="false"
/>
</LinearLayout>
]]>