SurfaceView Demo activity

//Main Activity

package com.demo;

import java.util.List;
import android.app.Activity;
import android.hardware.Camera;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class SurfaceViewDemo extends Activity implements SurfaceHolder.Callback
{
    Camera c;
    SurfaceView sv;
 
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
     
        sv=(SurfaceView) findViewById(R.id.surfaceView1);
        sv.getHolder().addCallback(this);
        sv.getHolder().setType(SurfaceHolder.SURFACE_TYPE_NORMAL);
     
        c = Camera.open();
    }

    public void onPause()
    {
        super.onPause();
        c.stopPreview();
    }
 
    public void onDestroy()
    {
        super.onDestroy();
        c.release();
    }
 
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height)
    {
        Camera.Parameters params = c.getParameters();
        List<Camera.Size> sizes = params.getSupportedPreviewSizes();
        Camera.Size selected = sizes.get(0);
        params.setPreviewSize(selected.width,selected.height);
        c.setDisplayOrientation(90);
     
        c.startPreview();     
    }

    public void surfaceCreated(SurfaceHolder holder)
    {
        try
        {
            c.setPreviewDisplay(sv.getHolder());
        }catch(Exception e)
        {
            e.printStackTrace();
        }     
    }

    public void surfaceDestroyed(SurfaceHolder holder)
    {
        Log.i("PREVIEW","surfaceDestroyed");     
    }
}


//main.xml file Coding
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
<SurfaceView android:layout_height="wrap_content" android:id="@+id/surfaceView1" android:layout_width="wrap_content"></SurfaceView>
</LinearLayout>


//manifest file Coding
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.demo"
      android:versionCode="1"
      android:versionName="1.0">
<uses-permission android:name="android.permission.CAMERA"></uses-permission>


    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".SurfaceViewDemo"
                  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>

//also add the user permission for Camera Support