This document discusses different types of screen orientations in Android including portrait and landscape. It provides 6 examples of how to detect orientation changes at runtime, lock an activity to a single orientation, switch orientations in the emulator and eclipse, and make an app support different screen resolutions.

1. Screen orientations in
Android
By Nataraj Manja
http://natdroid.blogspot.in/

2. Types of screen orientation in android
• port: Device is in portrait orientation (vertical)
• land: Device is in landscape orientation
(horizontal)
This can change during the life of your
application if the user rotates the screen.
Some example:

3. Example: 1
This code is used when you have 2 different layout file that is
portrait and landscape.
protected void onCreate(Bundle savedInstanceState) {
int result = this.getResources().getConfiguration().orientation;
if (result == 1){
//set content view to portrait
setContentView(R.layout.portrait);
}
else{
//set content view to landscape}
setContentView(R.layout.landscape);
}
}

4. Example: 2
Check screen orientation in runtime.
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks the orientation of the screen
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation ==
Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}

5. Example: 3
Switching to landscape mode in Android Emulator.
Ctrl+F11

6. • Ctrl+F11

7. Example: 4
Switching to landscape or portrait mode in eclipse.
Landscape.
Press this tab
NATDROID

8. • Portrait
Press this tab
NATDROID

9. Example: 5
How to lock phone orientation in Android to prevent
landscape mode?
By adding the following code in your AndroidManifest.xml.
<activity
android:name="com.example.display.InfoActivity"
android:configChanges="orientation|keyboardHidden"
android:label="@string/app_name"
android:screenOrientation="landscape" />
(com.example.display.InfoActivity) its your actvity name.

10. Example: 6
Making the application to support for all devices
resolution.
You can add following code in your AndroidManifest.xml to support different
screens.
<supports-screens
android:anyDensity="true"
android:largeScreens="true"
android:normalScreens="true"
android:resizeable="true"
android:smallScreens="true"
android:xlargeScreens="true" />
OR
<supports-screens android:anyDensity="true" />