Android: How to propagate click event to LinearLayout childs and change their drawable

Question

I would like to create a linear layout which would behave similarly to ImageButton.

<LinearLayout
    android:id="@+id/container"
    style="?WidgetHomeIconContainer">            

    <ImageView
        android:id="@+id/icon"
        style="?WidgetHomeIcon" />

    <TextView
        android:id="@+id/title"
        style="?WidgetHomeLabel"             
        android:text="@string/title"
        android:textAppearance="?attr/TextHomeLabel" />
</LinearLayout>

In styles of ImageView, TextView and LinearLayout, I set a selectors for all states.

Now:

• when I click on ImageView (I tried it also with ImageButton) - it behaves correctly and the image is changed according the selector xml.
• when I click on LinearLayout - the linear layout is clicked, but the the ImageView and TextView don't change it's drawable/appearance

So I would like to do the following. When I click on parent LinearLayout, I need to change all it's childs to pressed state.

I tried to add following code to LinearLayout onClickListener to propagate the click:

@Override
public void onClick(View v)
{
    LinearLayout l = (LinearLayout) v;
    for(int i = 0; i < l.getChildCount(); i++)
    {
        l.getChildAt(i).setClickable(true);
        l.getChildAt(i).performClick();
    }
}

But it still reamins the same. Thank you very much for any help.

Answer 1

Put

android:duplicateParentState="true"

in your ImageView and TextView..then the views get its drawable state (focused, pressed, etc.) from its direct parent rather than from itself.

Answer 2

Not only make for every child:

android:duplicateParentState="true"

But also additionally:

android:clickable="false"  

This will prevent unexpected behaviour (or solution simply not working) if clickable child views are used.

SO Source

Answer 3

After having the same problem some months later, I found this solution:

private void setOnClickListeners() {
    super.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            onClick(v);
        }
    });
    for (int index = 0; index < super.getChildCount(); index++) {
        View view = super.getChildAt(index);
        view.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                onClick(v);
            }
        });
    }
}

protected void onClick(View v) {
    // something to do here...
}