Anpr.java

package com.imrannazar.anpr;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.Toast;

import java.net.*;
import java.io.IOException;

import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.BasicResponseHandler;

public class Anpr extends Activity implements SurfaceHolder.Callback
{
    private static final String LOGTAG = "Anpr";
    private Camera mCam;
    private SurfaceHolder mSH;
    private SurfaceView mSV;
    private boolean mPreview = false;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        Log.v(LOGTAG, "Created");
    	try
	{
	    super.onCreate(savedInstanceState);
	    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            setContentView(R.layout.main);

	    mSV = (SurfaceView)findViewById(R.id.surface_camera);
	    mSH = mSV.getHolder();
	    mSH.addCallback(this);
	    mSH.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
	}
	catch(Exception e)
	{
	    Log.e(LOGTAG, "View creation failed");
	    e.printStackTrace();
	}
    }

    public void surfaceCreated(SurfaceHolder sh)
    {
        Log.v(LOGTAG, "Created surface");
	mCam = Camera.open();
	mPreview = false;
    }

    public void surfaceChanged(SurfaceHolder sh, int format, int w, int h)
    {
    	Log.v(LOGTAG, "Surface parameters changed: "+w+"x"+h);
        if(mPreview) mCam.stopPreview();
	Camera.Parameters p = mCam.getParameters();
	p.setPreviewSize(w, h);
	mCam.setParameters(p);
	Log.v(LOGTAG, "Preview size set");
	try
	{
	    mCam.setPreviewDisplay(sh);
	}
	catch(Exception e)
	{
	    Log.e(LOGTAG, "Preview set failed");
	    e.printStackTrace();
	}

	mCam.startPreview();
	mPreview = true;
    }

    public void surfaceDestroyed(SurfaceHolder sh)
    {
	Log.v(LOGTAG, "Destroyed surface");
	mCam.stopPreview();
	mPreview = false;
	mCam.release();
    }
}

errorlog.txt

V/Anpr    (22490): Created
V/Anpr    (22490): Created surface
E/QualcommCameraHardware(  160): openCameraHardware: call createInstance
E/QualcommCameraHardware(  160): createInstance: E
E/QualcommCameraHardware(  160):  Storing the current target type as 1
E/QualcommCameraHardware(  160): constructor EX
E/QualcommCameraHardware(  160): startCamera E
E/QualcommCameraHardware(  160): loading liboemcamera at 0x700102f4
E/QualcommCameraHardware(  160): startCamera X
E/QualcommCameraHardware(  160): initDefaultParameters E
E/QualcommCameraHardware(  160): max zoom is 50
E/QualcommCameraHardware(  160):  Using Overlay : NO
E/QualcommCameraHardware(  160): initDefaultParameters X
E/QualcommCameraHardware(  160): createInstance: X created hardware=0x934a8
E/QualcommCameraHardware(  160):  Using Overlay : NO
V/Anpr    (22490): Surface parameters changed: 320x483
E/QualcommCameraHardware(  160): setParameters: E params = 0x7ef69b28
E/QualcommCameraHardware(  160): requested preview size 320 x 483
E/QualcommCameraHardware(  160): Invalid preview size requested: 320x483
E/QualcommCameraHardware(  160): requested picture size 2048 x 1536
E/QualcommCameraHardware(  160): native_set_parm: fd 21, type 21, length 4
E/QualcommCameraHardware(  160): native_set_parm: fd 21, type 14, length 4
E/QualcommCameraHardware(  160): native_set_parm: fd 21, type 15, length 4
E/QualcommCameraHardware(  160): setFlash: flash not supported
E/QualcommCameraHardware(  160): native_get_maxzoom E
E/QualcommCameraHardware(  160): ctrlCmd.value = 0
E/QualcommCameraHardware(  160): native_get_maxzoom X
E/QualcommCameraHardware(  160): Maximum zoom value is 0
E/QualcommCameraHardware(  160): Set zoom=0, mMaxZoom=0
E/QualcommCameraHardware(  160): setZoom: mMaxZoom = 0
E/QualcommCameraHardware(  160): setParameters: setZoom failed!
E/Camera  (22490): Failed to set all parameters
E/AndroidRuntime(22490): FATAL EXCEPTION: main
E/AndroidRuntime(22490): java.lang.IllegalArgumentException: Invalid Parameters
E/AndroidRuntime(22490):        at android.hardware.Camera.setParameters(Camera.java:659)
E/AndroidRuntime(22490):        at com.imrannazar.anpr.Anpr.surfaceChanged(Anpr.java:73)
E/AndroidRuntime(22490):        at android.view.SurfaceView.updateWindow(SurfaceView.java:538)