rachana govilkar wrote:
>
> hey this is my ImageCapture.java......hope u [sic] get idea.....
>
>
> package com.privacygram.activity;
>
> import android.content.Context;
> import android.graphics.PixelFormat;
> import android.hardware.Camera;
> import android.hardware.Camera.Parameters;
> import android.hardware.Camera.PictureCallback;
> import android.hardware.Camera.ShutterCallback;
> import android.view.SurfaceHolder;
> import android.view.SurfaceView;
>
> public class ImageCapture extends SurfaceView{
>
> SurfaceHolder previewHolder;
>
Why did you use package-private access for these two variables?
> Camera camera;
>
protected PictureCallback raw;
>
Why 'protected' access here?
> protected ShutterCallback shutter;
> protected PictureCallback postview;
> protected PictureCallback jpeg;
>
> public ImageCapture(Context context) {
> super(context);
> // TODO Auto-generated constructor stub
>
Looks like this "TODO" was already done.
> previewHolder = this.getHolder();
>
>
>
> previewHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
> previewHolder.addCallback(surfaceHolderListener);
> }
>
> SurfaceHolder.Callback surfaceHolderListener = new
>
Conventionally, for readability, one declares variables ahead of
constructors and methods.
> SurfaceHolder.Callback()
> {
> public void surfaceCreated(SurfaceHolder holder)
> {
> camera=Camera.open();
> try {
> camera.setPreviewDisplay(previewHolder);
>
You need to use more conventional indentation and whitespace.
> }catch (Exception E ){ }
>
Don't ignore exceptions, and except for very limited use cases, don't catch
just 'Exception' but the specific exception type.
> }
>
A blank line between methods improves readability.
> public void surfaceDestroyed(SurfaceHolder arg0)
> {
> camera.stopPreview();
> camera.release();
> }
> public void surfaceChanged(SurfaceHolder holder, int
> format,
> int width, int height)
> {
> Parameters params = camera.getParameters();
> params.setPreviewSize(width, height);
> params.setPictureFormat(PixelFormat.JPEG);
> camera.setParameters(params);
> camera.startPreview();
>
> camera.takePicture(shutter, raw, postview,
> jpeg);
> camera.stopPreview();
> camera.release();
> }
> };
> }
>
> --
Lew
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