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OnItemClickListener and OnClickListener in ListView

开发者 https://www.devze.com 2023-03-07 11:52 出处:网络
I have a custom view for each row in a custom ListAdapter and I am trying to perform onClick action and get the row position in the list where the click came from.

I have a custom view for each row in a custom ListAdapter and I am trying to perform onClick action and get the row position in the list where the click came from.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:paddingLeft="10dip" android:id="@+id/itemRoot" android:clickable="false">

    <TextView android:layout_width="wrap_content" android:text="TextView"
        android:layout_height="wrap_content" android:id="@+id/itemTxt"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"></TextView>
    <TextView android:layout_toRightOf="@+id/itemTxt" android:text="TextView"
        android:layout_height="wrap_content" android:layout_alignBottom="@+id/itemTxt"
        android:id="@+id/amountTxt" android:paddingLeft="6dip"
        android:layout_centerVertical="true" android:layout_width="match_parent"></TextView>
    <ImageView android:id="@+id/delBtn" android:layout_height="wrap_content"
        android:src="@drawable/delete" android:layout_width="wrap_content"
        android:layout_alignParentRight="true" android:paddingRight="10dip"
        android:layout_centerVertical="true"></ImageView>

</RelativeLayout>

I want to figure out when TextView or ImageView is clicked, I also need to know what row in the list it came form. I h开发者_如何学运维ave tried using OnItemClickListener and it works fine to get the row where the click comes from. However, once I register an OnClick listener for the views, the onItemClicked() method gets skipped and onClick() is executed straight away, but there is no way of getting the row position that the view is in(or at least not that I know if).

If I set clickable to false for the views, then onItemClicked get called and I tried manually calling performClick() on the given view. But this only works for the root element (RelativeLayout), and if click comes from TextView inside the layout the click doesn't propagate.

I can't really figure out how to get both position in the list and perform onClick action.

Any thoughts are welcome.

Alex


You could assign the proper OnClickListener to each ImageView and TextView from inside your ListAdapter's overridden getView method.

Inside that method you know the item's position, so you can pass it to the custom listener classes, and use it there as you want:

@Override
public View getView(final int position, View convertView, ViewGroup parent)
{
    // TODO: instantiate the layout 
    // here I call a super method
    final View view = super.getView(position, convertView, parent);
    final TextView textView = (TextView)view.findViewById(R.id.itemTxt);
    textView.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            Log.i("Click", "TextView clicked on row " + position);
        }
    });
    final ImageView imageView = (ImageView)view.findViewById(R.id.delBtn);
    imageView.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            Log.i("Click", "ImageView clicked on row " + position);
        }
    });
    return view;
}


The other possible option to have the OnClickListener in the same class as the creating activity is to add to the activity implements OnItemClickListener.

public class DisplayListCustom extends Activity implements OnItemClickListener

Then set the custom list to listen

ListView list = (ListView)findViewById(R.id.custom_list);
list.setClickable(true);
list.setOnItemClickListener(this);
list.setAdapter(new CustomListAdapter(getApplicationContext(), listItems));

Finally in the onItemClick return, you can find the inner views by using resource ID

public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
    LinearLayout listItem = (LinearLayout) v;
    TextView clickedItemView = (TextView) listItem.findViewById(R.id.name);
    String clickedItemString = clickedItemView.getText().toString();
    Log.i("DisplayListCustom", "Click detected " + clickedItemString + ", position " + Integer.toString(position));

This is the solution I went with. I used LinearLayout for my custom layout container, but I assume the same applies to RelativeLayout.


You need to extend your TextView etc, override the click method, do the appropriate actions and then the trick is to return false so it's then propagated to the listview.

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