Android Screen Orientation and Example

Android Screen Orientation and Example

The screenOrientation is the attribute of activity element. The orientation of android activity can be portrait, landscape, sensor, unspecified etc. You need to define it in the AndroidManifest.xml file. For example:

1. <activity  
2.             android:name="com.example.screenorientation.MainActivity"  
3.             android:label="@string/app_name"   
4.             android:screenOrientation="landscape"  
5.             >  

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

1. <RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
2.     xmlns:tools="http://schemas.android.com/tools"  
3.     android:layout_width="match_parent"  
4.     android:layout_height="match_parent"  
5.     android:paddingBottom="@dimen/activity_vertical_margin"  
6.     android:paddingLeft="@dimen/activity_horizontal_margin"  
7.     android:paddingRight="@dimen/activity_horizontal_margin"  
8.     android:paddingTop="@dimen/activity_vertical_margin"  
9.     tools:context=".MainActivity" >  
10.   
11.     <Button  
12.         android:id="@+id/button1"  
13.         android:layout_width="wrap_content"  
14.         android:layout_height="wrap_content"  
15.         android:layout_marginLeft="66dp"  
16.         android:layout_marginTop="73dp"  
17.         android:text="Button"  
18.         android:onClick="onClick"  
19.          />  
20.   
21.     <EditText  
22.         android:id="@+id/editText1"  
23.         android:layout_width="wrap_content"  
24.         android:layout_height="wrap_content"  
25.         android:layout_centerHorizontal="true"  
26.         android:ems="10" />  
27.   
28. </RelativeLayout>  

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Activity class

File: MainActivity.java

1. package com.example.f;  
2.   
3. import android.os.Bundle;  
4. import android.app.Activity;  
5. import android.view.Menu;  
6. import android.view.View;  
7. import android.view.View.OnClickListener;  
8. import android.widget.Button;  
9. import android.widget.EditText;  
10.   
11. public class MainActivity extends Activity{  
12.     EditText editText1;  
13.     Button button1;  
14.     @Override  
15.     protected void onCreate(Bundle savedInstanceState) {  
16.         super.onCreate(savedInstanceState);  
17.         setContentView(R.layout.activity_main);  
18.           
19.         editText1=(EditText)findViewById(R.id.editText1);  
20.         button1=(Button)findViewById(R.id.button1);  
21.     }  
22.     public void onClick(View v) {  
23.         editText1.setText("O android");  
24.     }  
25. }  

AndroidManifest.xml

File: AndroidManifest.xml

1. <?xml version="1.0" encoding="utf-8"?>  
2. <manifest xmlns:androclass="http://schemas.android.com/apk/res/android"  
3.     package="com.example.screenorientation"  
4.     android:versionCode="1"  
5.     android:versionName="1.0" >  
6.   
7.     <uses-sdk  
8.         android:minSdkVersion="8"  
9.         android:targetSdkVersion="16" />  
10.   
11.     <application  
12.         android:allowBackup="true"  
13.         android:icon="@drawable/ic_launcher"  
14.         android:label="@string/app_name"  
15.         android:theme="@style/AppTheme" >  
16.         <activity  
17.             android:name="com.example.screenorientation.MainActivity"  
18.             android:label="@string/app_name"   
19.             android:screenOrientation="landscape"  
20.             >  
21.             <intent-filter>  
22.                 <action android:name="android.intent.action.MAIN" />  
23.   
24.                 <category android:name="android.intent.category.LAUNCHER" />  
25.             </intent-filter>  
26.         </activity>  
27.     </application>  
28.   
29. </manifest>  

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download this android example

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