问题
How can you make ObjectAnimator independent of the "Animator duration scale" developer options setting when constant and unmodifiable speed is critical?
回答1:
I noticed there is no explicit answer for this. You can do this by calling the hidden API via reflection:
// Get duration scale from the global settings.
float durationScale = Settings.Global.getFloat(context.getContentResolver(),
Settings.Global.ANIMATOR_DURATION_SCALE, 0);
// If global duration scale is not 1 (default), try to override it
// for the current application.
if (durationScale != 1) {
try {
ValueAnimator.class.getMethod("setDurationScale", float.class).invoke(null, 1f);
durationScale = 1f;
} catch (Throwable t) {
// It means something bad happened, and animations are still
// altered by the global settings. You should warn the user and
// exit application.
}
}
For more details you can check this blog post: https://arpytoth.com/2016/12/20/android-objectanimator-independent-of-global-animator-duration/
回答2:
Had to use hidden API to access the setDurationScale
method on the ValueAnimator
object.
回答3:
If you dont want to mess with setDurationScale, just do this
//in activity, kotlin
val animScale = Settings.Global.getFloat(this.contentResolver, Settings.Global.ANIMATOR_DURATION_SCALE, 1f)
animator.setDuration((timeInMs/animScale).toLong())
来源:https://stackoverflow.com/questions/28516100/make-objectanimator-animation-duration-independent-of-global-animator-duration-s