camera.setParameters failed in android

Question

I have included the camera functionality in my application. I have also launched the app in the market. I got an error message from one of the users that he is getting an er

Answer 1

It is failing because not all devices support arbitrary preview sizes. Apparently some do but you can't rely on it. In your surfaceChanged method you need to do something like this:

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    Camera.Parameters parameters = camera.getParameters();
    List<Camera.Size> previewSizes = parameters.getSupportedPreviewSizes();

    // You need to choose the most appropriate previewSize for your app
    Camera.Size previewSize = // .... select one of previewSizes here

    parameters.setPreviewSize(previewSize.width, previewSize.height);
    camera.setParameters(parameters);
    camera.startPreview();
}

You'll have to figure out a way to scale this so that you don't lose the aspect ratio etc.

For reference here is the Android SDK doc.