Making a custom progressdialog with an animation

Question

I am trying to make my own progressdialog, sort of. I'm just using a Dialog which inflates a Layout. In this layout, I have an ImageView, this imageview should rotate just like the original spinner in the ProgressDialog. I applied this animation to it:

RotateAnimation r = new RotateAnimation(ROTATE_FROM, ROTATE_TO, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
    r.setDuration(10000);
    r.setRepeatCount(r.INFINITE);
    icon.startAnimation(r);

The animation last for 10000 ms obviously. The animation start slowly and ends slowly, is it possible that the rotation speed is constant at all time?

Did you try to set a linear interpolator (with `setInterpolator`) — Henry, Jan 15 '13 at 08:28
See http://stackoverflow.com/questions/1634252/how-to-make-a-smooth-image-rotation-in-android — saschoar, Jan 15 '13 at 08:29
@Henry Make your comment into an answer, I will accept it. Thanks alot! — Tobias Moe Thorstensen, Jan 15 '13 at 08:36

score 2 · Accepted Answer · answered Jan 15 '13 at 08:46

2

You can set a LinearInterpolator to the animation:

r.setInterpolator(new LinearInterpolator());

answered Jan 15 '13 at 08:46

Henry

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+1. What's odd is that the documentation says that it's linear by default. Seems not! – Trevor Jan 31 '13 at 20:58

score 0 · Answer 2 · answered Jan 15 '13 at 08:26

0

A way to increase speed rotation is to set a duration and a number in repeatCount field that apply to you. Doing so, you can control the speed... Just put some big big numbers and add a listener to your animation and when it ends, start it again if dialog is still displayed.

answered Jan 15 '13 at 08:26

Buda Gavril

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I dont want to increase the speed rotation, I found a perfect rotation speed. But when the animation is finished it slows down, and after like 0.5 seconds it start again. I want to close this gap between the animations. – Tobias Moe Thorstensen Jan 15 '13 at 08:29
well, that this may mean that you're doing lots of things in UI thread when it stops... – Buda Gavril Jan 15 '13 at 08:33

Making a custom progressdialog with an animation

2 Answers2