类：
public class FixedSpeedScroller extends Scroller {
private int mDuration = 1500;
public FixedSpeedScroller(Context context) {
super(context);
}
public FixedSpeedScroller(Context context, Interpolator interpolator) {
super(context, interpolator);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy, int duration) {
// Ignore received duration, use fixed one instead
super.startScroll(startX, startY, dx, dy, mDuration);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy) {
// Ignore received duration, use fixed one instead
super.startScroll(startX, startY, dx, dy, mDuration);
}
public void setmDuration(int time) {
mDuration = time;
}
public int getmDuration() {
return mDuration;
}
}
调用该方法即可：
/**
* 滑动 500ms 至最下面的位置
*/
try {
Field field = VerticalViewPager.class.getDeclaredField("mScroller");
field.setAccessible(true);
FixedSpeedScroller scroller = new FixedSpeedScroller(verticalViewPager.getContext(),
new AccelerateInterpolator());
field.set(verticalViewPager, scroller);
scroller.setmDuration(500);
} catch (Exception e) {
}
