how can i customize cameras height width programmatically

[Suzzane Pinto]

hi,,

i want to change the hieght width of camera as per my need...
how can i achieve that programmatically???
found no guid link...any idea to startup??

[Tim Moores]

What do you mean by that? The camera is a hardware device that is not amenable to changes. You can influence the size of the preview and the size of the final image, though.

[Suzzane Pinto]

yes....i exactly want to do what you said.....sory for putting a wrong question.....i want to change the height and width of preview

how do i do that anyway??

[Tim Moores]

The preview size can be set in the onSurfaceChanged method of your SurfaceHolder.Callback. That's step 3 in this tutorial: http://code.google.com/p/openmobster/wiki/CameraTutorial

[Suzzane Pinto]

i have tried this code

package fortyonepost.com.pwop;//Created by DimasTheDriver Mar/2011 - Part of "Android: take a picture without displaying a preview" post. Available at: http://www.41post.com/?p=3794 .

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;

import android.app.Activity;
import android.content.ContentValues;
import android.content.pm.ActivityInfo;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.CameraDevice;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.hardware.Camera.Size;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore.Images.Media;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class TakePicture extends Activity implements SurfaceHolder.Callback{

 Camera camera;
 SurfaceView surfaceView;
 SurfaceHolder surfaceHolder;
 boolean previewing = false;
 LayoutInflater controlInflater = null;
 Size mPreviewSize;

 Button buttonTakePicture;
 TextView prompt;
 
 final int RESULT_SAVEIMAGE = 0;

 
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
      
       getWindow().setFormat(PixelFormat.UNKNOWN);
       surfaceView = (SurfaceView)findViewById(R.id.camerapreview);
       surfaceHolder = surfaceView.getHolder();
       surfaceHolder.addCallback(this);
       surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
      surfaceHolder.setFixedSize(1800, 1200);
      System.out.println("hello");
       controlInflater = LayoutInflater.from(getBaseContext());
       View viewControl = controlInflater.inflate(R.layout.control, null);
       LayoutParams layoutParamsControl
        = new LayoutParams(LayoutParams.FILL_PARENT,
        LayoutParams.FILL_PARENT);
       this.addContentView(viewControl, layoutParamsControl);
      
       buttonTakePicture = (Button)findViewById(R.id.takepicture);
       buttonTakePicture.setOnClickListener(new Button.OnClickListener(){

  
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    camera.takePicture(myShutterCallback,
      myPictureCallback_RAW, myPictureCallback_JPG);
   }});
      
       LinearLayout layoutBackground = (LinearLayout)findViewById(R.id.background);
       layoutBackground.setOnClickListener(new LinearLayout.OnClickListener(){

  
   public void onClick(View arg0) {
    // TODO Auto-generated method stub

    buttonTakePicture.setEnabled(false);
    camera.autoFocus(myAutoFocusCallback);
    
    
   }});
      
       prompt = (TextView)findViewById(R.id.prompt);
   }
  
 
  
   AutoFocusCallback myAutoFocusCallback = new AutoFocusCallback(){

  
  public void onAutoFocus(boolean arg0, Camera arg1) {
   // TODO Auto-generated method stub
   buttonTakePicture.setEnabled(true);
  }};
  
   ShutterCallback myShutterCallback = new ShutterCallback(){

  
  public void onShutter() {
   // TODO Auto-generated method stub
   
  }};
  
 PictureCallback myPictureCallback_RAW = new PictureCallback(){

  public void onPictureTaken(byte[] arg0, Camera arg1) {
   // TODO Auto-generated method stub
   
  }};
  
 PictureCallback myPictureCallback_JPG = new PictureCallback(){

 
  public void onPictureTaken(byte[] arg0, Camera arg1) {
   // TODO Auto-generated method stub
   /*Bitmap bitmapPicture
    = BitmapFactory.decodeByteArray(arg0, 0, arg0.length); */
   
   Uri uriTarget = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, new ContentValues());

   OutputStream imageFileOS;
   try {
	   
    imageFileOS = getContentResolver().openOutputStream(uriTarget);
    imageFileOS.write(arg0);
    imageFileOS.flush();
    imageFileOS.close();
    
    prompt.setText("Image saved: " + uriTarget.toString());
    
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }


   camera.startPreview();
   //camera.startFaceDetection();
  }};


 public void surfaceChanged(SurfaceHolder holder, int format, int width,
   int height) {
	  
	 Camera.Parameters params = camera.getParameters();
     List<Camera.Size> sizes = params.getSupportedPreviewSizes();
     int mFrameWidth =  1800;
     int mFrameHeight =1200;
    		 params.setPreviewSize(mFrameWidth, mFrameHeight);     ;

  // TODO Auto-generated method stub
  if(previewing){
   //camera.stopFaceDetection();
   camera.stopPreview();
   previewing = false;
  }
  
  if (camera != null){
   try {
    camera.setPreviewDisplay(surfaceHolder);
    camera.startPreview();

//    prompt.setText(String.valueOf(
//      "Max Face: " + camera.getParameters().getMaxNumDetectedFaces()));
    //camera.startFaceDetection();
    previewing = true;
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
 }


 public void surfaceCreated(SurfaceHolder holder) {
  // TODO Auto-generated method stub
	
 camera = Camera.open();
 
 //getSupportedPreviewSizes();
 surfaceHolder.setFixedSize(1800, 1200);
// surfaceHolder.setPreviewSize(1800, 1200);
 // camera.setFaceDetectionListener(faceDetectionListener);
 }
 
 
 public void surfaceDestroyed(SurfaceHolder holder) {
  // TODO Auto-generated method stub
 // camera.stopFaceDetection();
  camera.stopPreview();
  camera.release();
  camera = null;
  previewing = false;
 }
}

it can apture image but the resolution is not changed.....which i have set in my code....it saves as default only

[Swastik Dey]

As per my suggestion, it would be better to use MediaStore.ACTION_IMAGE_CAPTURE intent, and scale the final image.