Android上的相机预览-三星Galaxy S上的奇怪

camera preview on android - strange lines on 1.5 version of sdk 但那里的评论都无济于事。我试着用相机的参数来交换高度和宽度,但差别不大。

我的SurfaceHolderCallback(活动中的相关内部类)的代码:

class SurfaceHolderCallback implements SurfaceHolder.Callback {
    private static final int IMAGE_WIDTH = 512;
    private static final int IMAGE_HEIGHT = 384;
    private static final String ORIENTATION = "orientation";
    private static final String ROTATION = "rotation";
    private static final String PORTRAIT = "portrait";
    private static final String LANDSCAPE = "landscape";

    public void surfaceCreated(SurfaceHolder holder) {
        camera = Camera.open(); 

        //Surface.setOrientation(Display.DEFAULT_DISPLAY,Surface.ROTATION_90);            
        Parameters p = camera.getParameters();
        p.setPictureSize(IMAGE_WIDTH, IMAGE_HEIGHT);
        p.set(ORIENTATION, PORTRAIT);
        p.set(ROTATION, 90);
        // p.setPreviewSize(640, 480);

        Camera.Size s = p.getSupportedPreviewSizes().get(0);
        Log.d(APP, "preview params " + s.width +"/"+ s.height);            
        p.setPreviewSize( s.width,s.height );

        p.setPictureFormat(PixelFormat.JPEG);
        p.set("flash-mode", "auto");
        camera.setParameters(p);

        try {
            camera.setPreviewDisplay(surfaceHolder);
        } catch (Throwable ignored) {
            Log.e(APP, "set preview error.", ignored);
        }
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int width,
                               int height) {

        if (isPreviewRunning) {
            camera.stopPreview();
        }
        try {
            camera.startPreview();
        } catch(Exception e) {
            Log.d(APP, "Cannot start preview", e);    
        }
        isPreviewRunning = true;
    }

    ...