Question

This may not be the correct approach, if there is a better way pleas tell me.
I’ve created a class of Custom Adapter & in my getView method I inflate the view I want to use

public View getView(int position, View convertView, ViewGroup parent) 
    {
        View v = mInflater.inflate(R.layout.wherelayout, null);
        if (convertView != null) 
        {
            v = convertView;
        }
        HashMap<String, Object> whereHash = (HashMap<String, Object>) this.getItem(position);
        if (whereHash != null) 
        {
            TextView whereId = (TextView) v.findViewById(R.id.tvWhere);
            TextView whereDetails = (TextView) v.findViewById(R.id.tvWhereDetails);
            ImageButton ibDelWhere = (ImageButton) v.findViewById(R.id.ibDelWhere);

            whereId.setText((CharSequence) whereHash.get("where"));
            whereDetails.setText((CharSequence) whereHash.get("details"));
            if (ibDelWhere != null)
            {
                ibDelWhere.setId(position);
                ibDelWhere.setOnClickListener(new OnClickListener() 
                  {

                    @Override
                    public void onClick(View v) 
                    {
                        //do stuff when clicked
                    }
                  }
                );
            }
        }
        return v;
    }

The view consists of 2 TextView aligned to the left & an ImageButton aligned to the right, I want to be able to delete the item from the ListView when the button is clicked. the layout is like this –

    <RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="horizontal" android:clickable="true">
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:textSize="25sp" android:id="@+id/tvWhere" android:textColor="#00FF00" android:text="TextView" android:gravity="top|left" android:layout_alignParentTop="true" android:layout_alignParentLeft="true"></TextView>
<TextView android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/tvWhereDetails" android:textColor="#0000FF" android:text="TextView" android:textSize="18sp" android:layout_below="@+id/tvWhere" android:gravity="bottom|left" android:layout_alignParentLeft="true"></TextView>
<ImageButton android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="@drawable/eraser" android:id="@+id/ibDelWhere" android:layout_alignParentRight="true" android:layout_alignParentTop="true"></ImageButton>
</RelativeLayout>

The problem is that when the ImageButton is in the layout, I can click it & the onClick() fires as expected, but I can’t click the actual list item itself, i.e. click on the TextView items to fire the ListView.onItemClick that was assigned to it already. If I remove the ImageButton from the layout, then the ListView.onItemClick event fires when I click the item. Is there any way I can enable clicking both the ListView item & the button within the layout ?
Thanks guys & gals.

Answer 1

You have to set the imagebutton as non focusable and non focusableInTouchMode (clickable is ok).

Please note, as opposed as other views, you can’t do that in xml because the android:focusable gets overwritten in ImageButton‘s constructor.
To be more precise, that’s one of the few differences between ImageView and ImageButton. See for yourself, this is the complete source of ImageButton.

@RemoteView
public class ImageButton extends ImageView {
    public ImageButton(Context context) {
        this(context, null);
    }

    public ImageButton(Context context, AttributeSet attrs) {
        this(context, attrs, com.android.internal.R.attr.imageButtonStyle);
    }

    public ImageButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        setFocusable(true);
    }

    @Override
    protected boolean onSetAlpha(int alpha) {
        return false;
    }
}

To solve, just call setFocusable(false) from java. Or use an ImageView 🙂

myImageButton.setFocusable(false);

Hope it helps.