关于ViewPager高度自适应（随着页面高度改变Viewpager的高度）

重写Viewpager

public class MyViewPager extends ViewPager {
   
   
    private int current;
    private int viewHeight = 0;

    private boolean scrollble = true;

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

    public MyViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        View childView = getChildAt(getCurrentItem());
        if (childView != null)  //有可能没有子view
        {
            childView.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            viewHeight = childView.getMeasuredHeight();   //得到父元素对自身设定的高
            // UNSPECIFIED(未指定),父元素部队自元素施加任何束缚，子元素可以得到任意想要的大小
            //EXACTLY(完全)，父元素决定自元素的确切大小，子元素将被限定在给定的边界里而忽略它本身大小；
            //AT_MOST(至多)，子元素至多达到指定大小的值。
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(viewHeight, MeasureSpec.EXACTLY);
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    public void resetHeight(int current) {
        this.current = current;
        if (getChildCount() > current) {
            LinearLayout.LayoutParams layoutParams = (Li