Screen Orientation Example

The feature of the screenOrientation activity element is that the orientation of the Android activity can be portrait, landscape, sensor, unspecified, etc. You have to define it in the Android Manifest.xml file. for example:

<activity  
            android:name="com.example.screenorientation.MainActivity"  
            android:label="@string/app_name"   
            android:screenOrientation="landscape"  
            >  

The common values for screenOrientation attribute are as follows:

Value	Description
unspecified	It is the default value. In such case, system chooses the orientation.
portrait	taller not wider
landscape	wider not taller
sensor	orientation is determined by the device orientation sensor.

Android landscape mode screen orientation example

activity_main.xml

File: activity_main.xml

<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    android:paddingBottom="@dimen/activity_vertical_margin"  
    android:paddingLeft="@dimen/activity_horizontal_margin"  
    android:paddingRight="@dimen/activity_horizontal_margin"  
    android:paddingTop="@dimen/activity_vertical_margin"  
    tools:context=".MainActivity" > 
    <Button  
        android:id="@+id/button1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginLeft="66dp"  
        android:layout_marginTop="73dp"  
        android:text="Button"  
        android:onClick="onClick"  
         /> 
    <EditText  
        android:id="@+id/editText1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_centerHorizontal="true"  
        android:ems="10" /> 
RelativeLayout> 

Activity class

package com.example.f;    
import android.os.Bundle;  
import android.app.Activity;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.EditText;  
public class MainActivity extends Activity{  
    EditText editText1;  
    Button button1;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        editText1=(EditText)findViewById(R.id.editText1);  
        button1=(Button)findViewById(R.id.button1);  
    }  
    public void onClick(View v) {  
        editText1.setText("O android");  
    }  
}  

​​​​​​​AndroidManifest.xml

xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:androclass="http://schemas.android.com/apk/res/android"  
    package="com.example.screenorientation"  
    android:versionCode="1"  
    android:versionName="1.0" >  
    <uses-sdk  
        android:minSdkVersion="8"  
        android:targetSdkVersion="16" />  
    <application  
        android:allowBackup="true"  
        android:icon="@drawable/ic_launcher"  
        android:label="@string/app_name"  
        android:theme="@style/AppTheme" >  
        <activity  
            android:name="com.example.screenorientation.MainActivity"  
            android:label="@string/app_name"   
            android:screenOrientation="landscape"  
            >  
            <intent-filter>  
                <action android:name="android.intent.action.MAIN" />  
                <category android:name="android.intent.category.LAUNCHER" />  
            intent-filter>  
        activity>  
    application>  
manifest>