ViewPager自动轮播速度调节和滑动动画

public class FixedSpeedScroller extends Scroller {
    public int mDuration = 1000;

    public FixedSpeedScroller(Context context) {
        super(context);
    }

    public FixedSpeedScroller(Context context, Interpolator interpolator) {
        super(context, interpolator);
    }

    public FixedSpeedScroller(Context context, Interpolator interpolator, boolean flywheel) {
        super(context, interpolator, flywheel);
    }

    @Override
    public void startScroll(int startX, int startY, int dx, int dy) {
        startScroll(startX, startY, dx, dy, mDuration);
    }

    @Override
    public void startScroll(int startX, int startY, int dx, int dy, int duration) { 
        super.startScroll(startX, startY, dx, dy, mDuration);
    }

    public int getmDuration() {
        return mDuration;
    }

    public void setmDuration(int duration) {
        mDuration = duration;
    }
}

调用

private void setViewPagerScroller() {
        try {
            Field scrollerField = ViewPager.class.getDeclaredField("mScroller");
            scrollerField.setAccessible(true);
            Field interpolator = ViewPager.class.getDeclaredField("sInterpolator");
            interpolator.setAccessible(true);
            scrollerField.set(viewPager, new FixedSpeedScroller(getContext(), new LinearInterpolator()));
        } catch (NoSuchFieldException e) {
            // Do nothing.
        } catch (IllegalAccessException e) {
            // Do nothing.
        }
    }

滑动ViewPager需要的效果图

上一下效果图