Apps how to change speed animation at run-time?

[kimsangyoo]

i have a list sprites in drawable folder. One xml file with:

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:drawable="@drawable/fire_00000" android:duration="400" />
    <item android:drawable="@drawable/fire_00001" android:duration="400" />
    <item android:drawable="@drawable/fire_00002" android:duration="400" />
    <item android:drawable="@drawable/fire_00003" android:duration="400" />
    <item android:drawable="@drawable/fire_00004" android:duration="400" />
</animation-list>

i used AnimationDrawable to run sprites on ImageView, now. i want to set duration properties by hand, if i have a seekbar to change this. How can i do that? Tell me
sr, my English gammar is bad!

 

[heroesgame]

Have a look at the documentation of AnimationDrawable.

You have a getFrame(index) Method that returns a single Frame. You further have a addFrame(drawable, duration) method that adds a frame to the Animation. Unfortunately, there is no "setDuration()" method.

You could however create a copy of the AnimationDrawable and adjust the duration of each frame. The code could look something like this

public AnimationDrawable resampleAnimation(AnimationDrawable input, float factor)
{
    AnimationDrawable output = new AnimationDrawable();

    for(int i = 0 ; i < input.getNumberOfFrames() ; i++)
    {
        int old_duration = input.getDuration(i);
        output.addFrame(input.getFrame(i), old_duration * factor);
    }

    output.setOneShot(input.isOneShot());
    return output;
}

In case you try that code, please tell us if it worked

 

[docco2020]

I tested the code of herosgame. The AnimationDrawable changes the frame duration in the debugger but the speed of AnimationDrawable is the same.

myAnimationDrawable = resampleAnimation(myAnimationDrawable ,100);
myAnimationDrawable = (AnimationDrawable)imageView.getDrawable();
myAnimationDrawable .setCallback(imageView);
myAnimationDrawable .start();

The speed is still the same. What's the problem?

 

[marcelpreda]

Have a look on this thread

https://stackoverflow.com/questions...an-android-animationdrawable-animation-on-the