How to wrap the height of a ViewPager to the height of its current Fragment?

Question

I made a ScrollView containing a ViewPager, but the ViewPager does not grow in height. When the content inside the ViewPager is too big, it get \'pucht\'(?) inside, the tabl

Answer 1

in my case, i created imageslider with viewpager. initial value of child is null also at the end of index, value of child is null. so, i made some upgrades for repitch answer, because it didn't handle (child==null)

ViewPager now looks like:

public class WrapContentViewPager extends ViewPager {

    public WrapContentViewPager(Context context) {
        super(context);
        initPageChangeListener();
    }

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

    private void initPageChangeListener() {
        addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                requestLayout();
            }
        });
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        View child = getChildAt(getCurrentItem());
        if (child != null) {
            child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            int h = child.getMeasuredHeight();
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(h, MeasureSpec.EXACTLY);
        } else {for(int i = 0; i < getChildCount(); i++) {
                View child2 = getChildAt(i);
                child2.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
                int h = child2.getMeasuredHeight();
                heightMeasureSpec = MeasureSpec.makeMeasureSpec(h, MeasureSpec.EXACTLY);
        }}
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

}

also, you can add amount of height whatever you want, if the last item of viewpager stick to circlepageindicator, like this : int h = child2.getMeasuredHeight()+50;