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Android

Posted by Jasper Lamaker
Jasper Lamaker
1,422 Points

Help needed with Animating Crystalball App

Hi there!

I'm stuck on animating the Crystalball App in Android. The problem is that I can't set the image resource to the animation file resource. I've put all the animation files in the file 'drawable-mdpi' and I'm using the vollowing code: 

private void animateCrystalBall() {
    ImageView crystalBallImage = (ImageView) findViewById(R.id.imageView1);
    crystalBallImage.setImageResource(R.drawable.)

}

When I want to link to the animationfiles, I'm only able to select 'Ball01: int R.drawable'. Click here to see a printscreen of the problem.

Could a fellow android programmer advice me what I should do to solve this problem?

Help is much appreciated :)

Regards,

Jasper

2 Answers

Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

If ever you are unable to find things through the R class (R.drawable, R.id, etc.), it usually means that the R class isn't being regenerated based on your latest changes. "R" stands for resources and this class is generated by Eclipse each time you build your project.

There are a number of reasons why R might not be regenerating. It could be errors in an XML file or even a file name, or maybe even just a wonky day for Eclipse. Sometimes you can clean and rebuild your project or sometimes you can restart Eclipse. Try those and then look at this question on StackOverflow for help: http://stackoverflow.com/questions/2041083/how-to-regenerate-r-class

Let us know what you find! If you continue to have trouble, can you paste in the code for ball_animation.xml?

Jasper Lamaker
Jasper Lamaker
1,422 Points
Jasper Lamaker
Jasper Lamaker
1,422 Points

Hi Ben,

I appreciate your quick response!

After some fiddling around I managed to find the ´Clean´ option. Everything was fine after using it. Thank you for pointing it out, and keep up the good work.

Jasper