Android emulator rotates but app doesn't redraw

Question

I've seen pictures of this elsewhere, but from some time back where the answer is generally "this is a known issue with Android 2.3" I'm using 4.4, so that's definitely not the answer.

I have about the simplest program ever: "Hello, Android". When I launch the emulator, it load up in portrait mode. Using Fn-Ctrl-F11 (Mac), the emulator rotates to landscape mode. But the application and the phone controls do not redraw - the whole thing just looks sideways.

Here's the manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.helloandroid"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="18"
    android:targetSdkVersion="18" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.test.helloandroid.Hello"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

</manifest>

and the Activity XML file:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"

tools:context=".Hello" >

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

</LinearLayout>

I'm building with Eclipse, the ADT bundle build v22.3.0-887826, although I can't imagine that matters for something this trivial.

My emulator is for device Galaxy Nexus, Android 4.4 API level 19. I've tried this with Hardware keyboard present marked and unmarked. I found reference to a "keyboard lid support" setting which I haven't seen anywhere - this comment is from 3/12 & so may be outdated.

This is my first Android app, so I'm a complete novice at debugging in this environment. TIA for any suggestions on what I'm missing.

EDIT: Adding code for hello.java

package com.test.helloandroid;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class Hello extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_hello);
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.hello, menu);
    return true;
}

}

Answer 1

Apparently,everything old is new again: orientation change bug in 4.4

"The more they overthink the plumbing, the easier it is to stop up the drain."

It's good to know that I've not missed something obvious; OTOH this is a pretty obvious FAIL on the part of google's quality assurance... did bill gates sneak in there while no one was looking? Or are they greedy & trying to sell phones for testing by mucking up the emulators? Looks like there's a device in my future.

Edit :

Reference : Answered by CommonsWare,the Framework Engineer of Android.

Impossible to rotate the emulator with android 4.4

Answer 2

If you are beginner,you should go through this reference document to know about Activity lifecycle.

Here,I'm including few Log and Toast to make it easier to understand the process happens when you rotate the screen.

Example:

package com.test.helloandroid;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class Hello extends Activity {


private static final String TAG = "Hello";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_hello);

    Log.d(TAG, "onCreate");
    Toast.makeText(this, "onCreate", Toast.LENGTH_SHORT).show();
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.hello, menu);
    return true;
}

@Override
protected void onResume() {
    super.onResume();

    Log.d(TAG, "onResume");
    Toast.makeText(this, "onResume", Toast.LENGTH_SHORT).show();
}

@Override
protected void onPause() {
    super.onPause();

    Log.d(TAG, "onPause");
    Toast.makeText(this, "onPause", Toast.LENGTH_SHORT).show();
}


}

I hope it will be helpful !!