ViewPager滑动灵敏度调整的方法实力

private int determineTargetPage(int currentPage, float pageOffset, int velocity, int deltaX) {
    int targetPage;
    if (Math.abs(deltaX) > mFlingDistance && Math.abs(velocity) > mMinimumVelocity) {
      targetPage = velocity > 0 ? currentPage : currentPage + 1;
    } else {
      final float truncator = currentPage >= mCurItem ? 0.4f : 0.6f;
      targetPage = currentPage + (int) (pageOffset + truncator);
    }
    ......

private static final int MIN_DISTANCE_FOR_FLING = 25; // dips
  
  private static final int MIN_FLING_VELOCITY = 400; // dips
void initViewPager() {
  
    mMinimumVelocity = (int) (MIN_FLING_VELOCITY * density);

    mFlingDistance = (int) (MIN_DISTANCE_FOR_FLING * density
  }

val mFlingDistance: Field
    mFlingDistance = ViewPager::class.java.getDeclaredField("mFlingDistance")
    mFlingDistance.setAccessible(true)
    val distance = mFlingDistance.get(mViewPager)//获取值
    mFlingDistance.set(mViewPager, 10) //你定义的值

    val mMinimumVelocity: Field
    mMinimumVelocity = ViewPager::class.java.getDeclaredField("mFlingDistance")
    mMinimumVelocity.setAccessible(true)
    val velocity = mMinimumVelocity.get(mViewPager)//获取值
    mMinimumVelocity.set(mViewPager, 5)//你定义的值