AnimUtils.java 文件源码

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
static Interpolator getFastOutSlowInInterpolator(Context context) {
    if (fastOutSlowIn == null) {
        fastOutSlowIn = AnimationUtils.loadInterpolator(context,
                android.R.interpolator.fast_out_slow_in);
    }
    return fastOutSlowIn;
}