Android ViewPager with dynamic height

Question

I have a ViewPager to show some Fragments and swipe between them but the height of the ViewPager is dynamic based on the content. Assume I have multiple list that each list placed in one tab and by changing tabs the height of ViewPager should change properly I created a custom ViewPager and overrided onMeasure but the problem is ViewPager creates the next fragment sooner that current fragment (visible one) gets It's height from next fragment measure.

Here is MyViewPager :

public class MyViewPager extends ViewPager {

    public MyViewPager(Context context) {
        super(context);
    }
    
    public MyViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int height = 0;
        for(int i = 0; i < getChildCount(); i++) {
            View child = getChildAt(i);
            child.measure(
                widthMeasureSpec,
                MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)
            );
            int h = child.getMeasuredHeight();
            if(h > height) height = h;
        }
    
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
    
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
    
}

I also tried to trigger onMeasure method of MyViewPager when the fragment become visible like below but nothing changes.

@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
    super.setUserVisibleHint(isVisibleToUser);
    if (isVisibleToUser) {
        PostDetailsActivity activity = (PostDetailsActivity) getActivity();
        activity.pagerParent.requestLayout();
        activity.pagerParent.invalidate();
    }
}

Possible duplicate of [Dynamic height viewpager](http://stackoverflow.com/questions/32330639/dynamic-height-viewpager) — MiguelHincapieC, Apr 21 '16 at 21:14

score 10 · Accepted Answer · edited May 23 '17 at 12:07

10

I found a good solution here If anyone else was wondering how to make ViewPager change It's height dynamically.

Also you can find quick answer here If you don't have time to look at Git.

edited May 23 '17 at 12:07

Community

1
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answered Feb 07 '16 at 04:47

Hamidreza Salehi

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Android ViewPager with dynamic height

1 Answers1