Hi everyone,

I am sure this must be very easy to achieve, however, I am somehow too stupid to do the following:



The idea is to draw an image file that is stored in the ressources to a canvas. Unfortunatelly, I keep on getting null pointer errors ...

I'd really appreciate if anyone could get me out here ...

Best,
misterbo

I guess one reason would be that:

Code: Select all

Bitmap photoBitmap = BitmapFactory.decode("/res/drawable/photo.jpg");


should really be

Code: Select all

Bitmap photoBitmap = BitmapFactory.decode( R.drawable.photo );


Thanks for your reply.

Unfortunatelly, this does not help: BitmapFactory.decode(String) expects the filepath as String and not an Integer.

Is there another function than decode to use? Respectively, what would be the correct absolute filepath if my image is stored in res/drawable?

Cheers,
misterbo

The hint for the resource-id goes into the right direction.

You have to do something like this:



But the first argument is wrong. I don't now what to use here.
The alternative is maybe the creation of a custom Resources-object (null don't does it).

Resources(AssetManager assets, DisplayMetrics metrics, Configuration config)

ImageButton.setImageResource(int resid) is an example for the simple access by resource-id.

I think you can not access this image by its path. It's inside the dex-file. Aproaches like JarURLConnection don't work here. The way to go ist to reference it by its resource-id.

This should work:



And here comes the javadoc for the getResources() method:

Resources android.app.ApplicationContext.getResources()

public Resources getResources()
Return a Resources instance for your application's package.

Regards,
jeremian.

Sucess, this does the job!

Thank you very much, happy New Year everyone!

misterbo