Wrap content height ViewPager (Android)

WrapContentHeightViewPager.java

package org.cnii.layoutloader.ui;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.View;

/**
 * Special thanks to Daniel López Lacalle for his response 
 * (http://stackoverflow.com/questions/8394681/android-i-am-unable-to-have-viewpager-wrap-content/20784791#20784791)
 * */
public class WrapContentHeightViewPager extends ViewPager {

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

    public WrapContentHeightViewPager(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);
    }

}

Thanks for a ton.

excellent. Works like a charm :)

It doesn't work in my case, I should add super call before height calculation, because in first onMeasure call children count is zero

excellent. Works like a charm :)

in landscape orientation height are minimum height

problems with recyclerview childs. scroll don't working

Thanks! It saved me..

i need the height be as per my textview data.. currently it take height of the first index cell area height.
Please help

Thanks a lot.

But it is taking the height of the biggest child. What I need is to dynamically set the height. please help.

// @afinas-em This is what i use to meaure the size dinamically. Sorry for the styling but i'm new using github

@OverRide
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = 0;

    //View v = getChildAt(getCurrentItem());
    TabsCircleAdapter tabsCircleAdapter = (TabsCircleAdapter) getAdapter();
    //View v = tabsCircleAdapter.getCurrentItem(getCurrentItem());
    View v = null;
    if (tabsCircleAdapter != null) v = tabsCircleAdapter.getCurrentItem(getCurrentItem());

    if(v != null) {

        v.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

        height = v.getMeasuredHeight();

        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
       
    } else {
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

really save

This works and height is of tallest child, incase you need diffrent height then save height as interger array and request layout on page change listener, and populate height accordingly.

`public class WrapContentHeightViewPager extends ViewPager {

private int mCurrentPagePosition = 0;

private int[] heightArr = new int[3];  // allocating memory to array
public WrapContentHeightViewPager(Context context) {
    super(context);
}

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

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

    int mode = MeasureSpec.getMode(heightMeasureSpec);
    if (mode == MeasureSpec.UNSPECIFIED || mode == MeasureSpec.AT_MOST) {
        // super has to be called in the beginning so the child views can be initialized.
       // super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int height = 0;
        int numOfElements = getChildCount();
        for (int i = 0; i < numOfElements; i++) {
            View child = getChildAt(i);
            child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            int h = child.getMeasuredHeight();
            height = h;
            //if (h > height) height = h;
            heightArr[i]=height;
        }
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(heightArr[mCurrentPagePosition], MeasureSpec.EXACTLY);
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);

}

public void reMeasureCurrentPage(int position) {
    mCurrentPagePosition = position;
    requestLayout();
}

}
`

This is for reference not orginal by me, credit goes to TheLittleNaruto and many devs from stack overflow.

This is what is used. Just add a flag of fillViewPort

        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fillViewport="true"
            >

          <LinearLayout
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="vertical"
              >
<android.support.design.widget.TabLayout
          android:id="@+id/tabLayout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          />
      <android.support.v4.view.ViewPager
          android:id="@+id/case_data_view_pager"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          >
      </android.support.v4.view.ViewPager>
          </LinearLayout>
 </ScrollView>

Some people are born to be awesome.!! Thank you.

how i can use ? :(

Thanks, you saved me !!!

I have the same problem with @ilya-afanasev, childCount detected zero at first display, so it doesn't show until I tap the other tab. can anyone give advice?