title: Couldn't start/open an activity when expandable listview item/child clicked and how to implement Toast here
body: <p>I created expandable listview in a fragment and it's works fine. However I want to start an activity when expandable listview child item clicked. I've looked for hours trying to find a solution to this but I couldn't find it. Someone please provide code for this problem.</p>
  
  <pre><code>import android.R.color;
  import android.app.Fragment;
  import android.content.Intent;
  import android.os.Bundle;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.BaseExpandableListAdapter;
  import android.widget.ExpandableListView;
  import android.widget.ExpandableListView.OnChildClickListener;
  import android.widget.TextView;
  import android.widget.Toast;
  
          // This is a listfragment class
          public class Categories extends Fragment {
  
              @Override
              public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                  View v = inflater.inflate(R.layout.categories, null);
                  ExpandableListView elv = (ExpandableListView) v.findViewById(R.id.expandableListView1);
                  elv.setAdapter(new SavedTabsListAdapter());
                  return v;
              }
  
              public class SavedTabsListAdapter extends BaseExpandableListAdapter {
  
                  private String[] groups = { "Men", "Women"};
  
                  private String[][] children = {
                      { "Men's accessories", "Men's trousers"},
                      { "Dresses", "Women's trousers"}
                  };
  
                  @Override
                  public int getGroupCount() {
                      return groups.length;
                  }
  
                  @Override
                  public int getChildrenCount(int i) {
                      return children[i].length;
                  }
  
                  @Override
                  public Object getGroup(int i) {
                      return groups[i];
                  }
  
                  @Override
                  public Object getChild(int i, int i1) {
                      return children[i][i1];
                  }
  
                  @Override
                  public long getGroupId(int i) {
                      return i;
                  }
  
                  @Override
                  public long getChildId(int i, int i1) {
                      return i1;
                  }
  
                  @Override
                  public boolean hasStableIds() {
                      return true;
                  }
  
                  @Override
                  public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
                      TextView textView = new TextView(CategoriesFragment.this.getActivity());
                      textView.setText(getGroup(i).toString());
                      return textView;
                  }
  
                  @Override
                  public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
                      TextView textView = new TextView(CategoriesFragment.this.getActivity());
                      textView.setText(getChild(i, i1).toString());
                      return textView;
                  }
  
                  @Override
                  public boolean isChildSelectable(int i, int i1) {
                      return true;
                  }
  
              }
  
          Intent k;
  
          @Override
          public boolean onChildClick(ExpandableListView parent, View v,
                  int groupPosition, int childPosition, long id) {
              switch(childPosition){
              case 0:
                  k = new Intent(getActivity().getApplicationContext(), Baby.class);
                  break;
              case 1:
                  k = new Intent(getActivity().getApplicationContext(), Baby1.class);
                  break;
              }
              startActivity(k);
              return true;
          }
  
          }
  </code></pre>