How to implement different click events for child of expandable list?
In my expandable list view I have a textView
and an imagebutton
. When I click on the textView
or child view of expandable list, it should show an alertbox
. I can achieve this by using onChildClick
but I have an imagebutton
inside the child view after textView
. When I click on this, it should perform another activity. I don't know how to implement this in an expandable list.
Here is my expandable list code. Please check it. I tried android:onClick="myClickHandler"
too. I'm getting some illegalstateException
.
Here is my code:
import android.app.ExpandableListActivity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ExpandableListView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SimpleExpandableListAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.util.List;
import java.util.ArrayList;
import java.util.HashMap;
import android.util.Log;
public class CoctailsActivity extends ExpandableListActivity implements OnClickListener
{
private static final String LOG_TAG = "ElistCBox";
public static ImageButton img_button;
static final String Group[] = {
"A",
"B",
"C",
"D"
};
static final String Children[][] = {
{
"lightgrey",
"dimgray",
"sgi gray 92"
},
{
"dodgerblue 2",
"steelblue 2",
"powderblue",
},
{
"yellow 1",
"gold 1",
"darkgoldenrod 1",
},
{
"indianred 1",
"firebrick 1",
"maroon",
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.exp_list);
SimpleExpandableListAdapter expListAdapter =new SimpleExpandableListAdapter
(
this,
createGroupList(),
R.layout.group_row,
new String[] { "Group" },
new int[] { R.id.group_name },
createChildList(),
R.layout.child_row,
new String[] { "Children"},
new int[] { R.id.child_name }
);
setListAdapter( expListAdapter );
}
public void onContentChanged ()
{
super.onContentChanged();
Log.d( LOG_TAG, "onContentChanged" );
}
public void myClickHandler(View v)
{
Log.v( LOG_TAG, "insideMyHandler" );
ExpandableListView lvItems = getExpandableListView();
for (int i=0; i < lvItems.getChildCount(); i++)
{
lvItems.getChildAt(i).setBackgroundColor(Color.BLUE);
}
LinearLayout vwParentRow = (LinearLayout)v.getParent();
TextView child = (TextView)vwParentRow.getChildAt(0);
Button btnChild = (Button)vwParentRow.getChildAt(1);
btnChild.setText(child.getText());
btnChild.setText("I've been clicked!");
int c = Color.CYAN;
vwParentRow.setBackgroundColor(c);
vwParentRow.refreshDrawableState();
}
public boolean onChildClick(ExpandableListView parent,View v,int groupPosition,int childPosition,long id)
{
Log.d( LOG_TAG, "onChildClick: "+child开发者_如何学编程Position );
return false;
}
public void onGroupExpand (int groupPosition) {
Log.d( LOG_TAG,"onGroupExpand: "+groupPosition );
}
private List<HashMap<String, String>> createGroupList() {
ArrayList<HashMap<String, String>> result = new ArrayList<HashMap<String, String>>();
for( int i = 0 ; i < Group.length ; ++i ) {
HashMap<String, String> m = new HashMap<String, String>();
m.put( "Group",Group[i] );
result.add( m );
}
return (List<HashMap<String, String>>)result;
}
private List<ArrayList<HashMap<String, String>>> createChildList() {
ArrayList<ArrayList<HashMap<String, String>>> result = new ArrayList<ArrayList<HashMap<String, String>>>();
for( int i = 0 ; i < Children.length ; ++i )
{
// Second-level lists
ArrayList<HashMap<String, String>> secList = new ArrayList<HashMap<String, String>>();
for( int n = 0 ; n < Children[i].length ; n += 2 )
{
HashMap<String, String> child = new HashMap<String, String>();
child.put( "Children", Children[i][n] );
//child.put( "rgb", shades[i][n+1] );
secList.add( child );
}
result.add( secList );
}
return result;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
img_button =(ImageButton)v.findViewById(R.id.img01);
if(img_button!=null){
Log.v( LOG_TAG, "onclick clickedddddd" );
}
}
}
Please help me.
I haven't tried this myself, but I'm thinking that the button's on click event can be handled by the activity, like you would any other button onClick event.
Possible have a read through on this article: http://developer.android.com/guide/topics/ui/ui-events.html
See if that helps.
Else, I'm sure you can just build an onClick listener object and pass it through the specific button. The link should help you out.
Kris , why not implement a ExpandableListAdapte
r . They are in API demo sample -ExpandableList1.java and then override getGroupView
or getChildView
to set onClickListeners
as you want .
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