使 ObjectAnimator 动画持续时间独立于开发人员选项中的全局动画持续时间比例设置

Question

当恒定且不可修改的速度至关重要时，如何使 ObjectAnimator 独立于 "Animator duration scale" 开发人员选项设置？

Answer 1

必须使用隐藏 API 来访问 ValueAnimator 对象上的 setDurationScale 方法。

Answer 2

我注意到没有明确的答案。您可以通过反射调用隐藏的 API 来做到这一点：

// 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.
  }
}

有关详细信息，您可以查看此博客 post：https://arpytoth.com/2016/12/20/android-objectanimator-independent-of-global-animator-duration/

Answer 3

如果你不想弄乱 setDuration Scale，就这样做

//in activity, kotlin
val animScale = Settings.Global.getFloat(this.contentResolver, Settings.Global.ANIMATOR_DURATION_SCALE, 1f)
animator.setDuration((timeInMs/animScale).toLong())

使 ObjectAnimator 动画持续时间独立于开发人员选项中的全局动画持续时间比例设置

Make ObjectAnimator animation duration independent of global animator duration scale setting in developer options

animation

android

duration

objectanimator

animator