Method for Setting the Height of the ListView dynamically. - Android User Interface

Android examples for User Interface:ListView

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Description

Method for Setting the Height of the ListView dynamically.

Demo Code


import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;

public class Main {
  /****/*from ww  w . ja  v  a 2  s  . c o m*/
   * Method for Setting the Height of the ListView dynamically. *** Hack to fix
   * the issue of not showing all the items of the ListView *** when placed inside
   * a ScrollView
   ****/
  public static void setListViewHeightBasedOnChildren(ListView listView, RecyclerView recyclerView) {
    ListAdapter listAdapter = listView.getAdapter();
    RecyclerView.Adapter adapter = recyclerView.getAdapter();

    if (listAdapter == null)
      return;

    int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(), View.MeasureSpec.UNSPECIFIED);
    int totalHeight = 0;
    View view = null;
    for (int i = 0; i < listAdapter.getCount(); i++) {
      view = listAdapter.getView(i, view, listView);
      if (i == 0)
        view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth, ViewGroup.LayoutParams.WRAP_CONTENT));

      view.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
      totalHeight += view.getMeasuredHeight();
    }
    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
  }

  public static void setListViewHeightBasedOnChildren(RecyclerView recyclerView) {
    RecyclerView.Adapter adapter = recyclerView.getAdapter();

    if (recyclerView == null)
      return;

    int desiredWidth = View.MeasureSpec.makeMeasureSpec(recyclerView.getWidth(), View.MeasureSpec.UNSPECIFIED);
    int totalHeight = 0;
    View view = null;
    for (int i = 0; i < adapter.getItemCount(); i++) {
      view = recyclerView.getChildAt(i);
      if (i == 0)
        view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth, ViewGroup.LayoutParams.WRAP_CONTENT));

      view.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
      totalHeight += view.getMeasuredHeight();
    }
    ViewGroup.LayoutParams params = recyclerView.getLayoutParams();
    params.height = totalHeight + (3 * (adapter.getItemCount() - 1));
    recyclerView.setLayoutParams(params);
  }
}

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