CODEWITHSUNDEEP
androidlistview
Sam Svenbjorgchristiensensen
Sam Svenbjorgchristiensensen

Reputation: 2709

How do I get the row ID of the row from a ListView, which contains a clickable item?

Before I added a button to the layout XML for my rows, the row ID was returned in the callback onListItemClick() upon a list item being clicked. Now that I added a button to the list row layout, this callback doesn't work anymore. I read that this is normal. I have been able to get the text and the new button to refer to new callbacks via the inclusion of this sort of thing in the layout XML file for my list row:

<Button
    android:onClick="newCallBackFunctionName"/>

The problem is that I can't seem to find a way to retrieve the row id number corresponding to the list item in which the particular button that was pressed lies. In the case of onListItemClick() this was passed as part of the callback, but in the above case only the View object that is clicked is passed back to the callback newCallBackFunctionName. What can I do about this?

*Edit: My list is populated by a SimpleCursorAdaptor, in case that's important.

*Edit: My list and list row XML layouts are as follows:

List:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/basic_linear_layout_v1">

<TextView 
    android:id="@+id/category_selection_page_name"
    style="@style/page_heading_v1"/>

<ListView
    android:id="@id/android:list"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_weight="1"
    android:drawSelectorOnTop="false"/>

<TextView
    android:id="@id/android:empty"
    style="@style/problem_text_v1"
    android:text="@string/search_list_empty" />

<Button
    android:id="@+id/select_category_button"
    android:textSize="20sp"
    android:layout_weight="10"
    android:layout_height="wrap_content"
    android:layout_width="fill_parent"
    android:onClick="reload"/>

Row:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<TextView android:id="@+id/category_browse_name" style="@style/basic_list_item_v1"
    android:layout_weight="1"
    android:layout_gravity="left"
    android:focusable="true"
    android:clickable="true"/>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:layout_gravity="right">
    <Button 
        android:text="..." 
        android:id="@+id/subcategories_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:focusable="true"
        android:onClick="onSubcategoryButtonClick">
    </Button>
</LinearLayout>

Upvotes: 3

Views: 6923

Answers (2)

Jeff Gilfelt
Jeff Gilfelt

Reputation: 26149

You can tag your Buttons with the appropriate id or position in your adapter's getView method. For example:

myButton.setTag(id);

Then in your onClick handler, retrieve the tag from the view that was clicked. For example:

public void newCallBackFunctionName(View v) {
    long id = (Long) v.getTag();
    // ...
}

Upvotes: 5

Sunil Pandey
Sunil Pandey

Reputation: 7102

you have to take little diff aproach you have to create your own cursorAdapter if it SimpleCursorAdapter then code will be some thing like this

first create a subclass of cursoradapter then override getView Method and then define onclicklistener for them

public class SMSimpleCursorAdapter extends SimpleCursorAdapter{

Context context;
Activity activity;
public SMSimpleCursorAdapter(Context context, int layout, Cursor c,
        String[] from, int[] to) {
    super(context, layout, c, from, to);
    this.context=context;
    this.activity=(Activity) context;
}


@Override
public View getView(int position, View convertView, ViewGroup parent){
    View view = super.getView(position, convertView, parent);
    long id=getItemId(position);
    Button button = (Button)view.findViewById(R.id.btnDelete);
     //pass id in your handler
    button.setOnClickListener(new DeleteItemHandler(id, activity,this));        
}

and your handle class will be something like this

public class DeleteItemHandler implements OnClickListener,
        android.view.View.OnClickListener {
long id;
Activity activity;
SMSimpleCursorAdapter smSimpleCursorAdapter;
public DeleteItemHandler(long id, Activity activity,
        SMSimpleCursorAdapter smSimpleCursorAdapter) {
    super();
    this.id = id;
    this.activity = activity;
    this.smSimpleCursorAdapter = smSimpleCursorAdapter;
}
@Override
public void onClick(View v) {
          //your own item click code
}
}

Upvotes: 2

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