Android Screen Orientation Example

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Basics of Android


Android Screen Orientation 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:
<activity
            android:name="com.example.screenorientation.MainActivity"
            android:label="@string/app_name" 
            android:screenOrientation="landscape"
            >
The common values for screenOrientation attribute are as follows:
ValueDescription
unspecifiedIt is the default value. In such case, system chooses the orientation.
portraittaller not wider
landscapewider not taller
sensororientation is determined by the device orientation sensor.

Android landscape mode screen orientation example

activity_main.xml

File: activity_main.xml
<RelativeLayout 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"
    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

File: MainActivity.java
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

File: AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="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>

Output:




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