ViewPager not supporting layout_height = wrap_content

Question

I'm building an android application with the following layout.

It's already known that layout_height="wrap_content" doesn't work for the ViewPager.

My question is how to change it dynamically. The content of the ViewPager is inflated from two xml layouts, vp_statistics.xml and vp_campaigns.xml.

here's the xml for the ViewPager

<LinearLayout
            android:id="@+id/topcontent_wrapper"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:orientation="vertical" >
</LinearLayout>

<LinearLayout
            android:id="@+id/viewpager_wrapper"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:orientation="vertical" >

            <android.support.v4.view.ViewPager
                android:id="@+id/viewpager"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
</LinearLayout>

Here's the code for my PagerAdapter

class MyPagerAdapter extends PagerAdapter{

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return 2;
}

public Object instantiateItem(View collection, int pos){
    LayoutInflater inflater =     (LayoutInflater)collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    int resId = 0;
    switch(pos){
    case 0:
        resId = R.layout.vp_statistics;
        break;
    case 1:
        resId = R.layout.vp_campaigns;
        break;
    }

    View view = inflater.inflate(resId, null);


    ((ViewPager)collection).addView(view, 0);

    return view;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    // TODO Auto-generated method stub
    ((ViewPager)container).removeView((View)object);
}

@Override
public boolean isViewFromObject(View arg0, Object arg1) {
    // TODO Auto-generated method stub
    return arg0 == ((View)arg1);
}

@Override
public Parcelable saveState() {
    // TODO Auto-generated method stub
    return null;
}

}

and inside my onCreate() mthod of the Activity class:

MyPagerAdapter adapter = new MyPagerAdapter();
ViewPager viewPager = (ViewPager)findViewById(R.id.viewpager);
viewPager.setAdapter(adapter);
viewPager.setCurrentItem(0);

Is there a way to get the height of the vp_statistics.xml and vp_campaigns.xml layouts and assign it dynamically to ViewPager (@id/viewpager) every time the instantiateItem() object gets called?

Answer 1

1. Add a weightSum=2 attribute to the parent LinearLayout, and set orientation=vertical.
2. Set the top child LinearLayout's layout_weight=1. Also, set layout_height=0dip
3. Wrap the ViewPager into another LinearLayout with layout_weight=1 and layout_height=0dip

Answer 2

I answered a similar question here.

The solution extends ViewPager to override onMeasure() to make wrap_content just work for the height.