Disable an ImageButton

ImageButton has different inheritance chain meaning it does not extend Button:

ImageButton < ImageView < View

It continues to receive click events

Here is what happens when you set a click listener for the View:

public void setOnClickListener(OnClickListener l) {
    if (!isClickable()) {
        setClickable(true);
    }
    mOnClickListener = l;
}

So if you set a listener the android:clickable="false" changes to android:clickable="true".

and its appearance don't change like a standard Button would

You should supply a drawable state list to the view so it could set an appropriate image based on android:enabled. Do you have this? Or you have the only image for your button?

EDIT: You can find info on StateListDrawable here. android:state_enabled is what you need to use in the list in order to tell the OS what image to use for that state.

EDIT2: Since you really need to add a listener you can make a check inside of the listener if (!isEnabled()) { return; } else { /* process the event */ }.

Here's the code I use to disable an ImageButton and make it look grayed out:

/**
 * Sets the specified image buttonto the given state, while modifying or
 * "graying-out" the icon as well
 * 
 * @param enabled The state of the menu item
 * @param item The menu item to modify
 * @param iconResId The icon ID
 */
public static void setImageButtonEnabled(Context ctxt, boolean enabled, ImageButton item,
        int iconResId) {
    item.setEnabled(enabled);
    Drawable originalIcon = ctxt.getResources().getDrawable(iconResId);
    Drawable icon = enabled ? originalIcon : convertDrawableToGrayScale(originalIcon);
    item.setImageDrawable(icon);
}

/**
 * Mutates and applies a filter that converts the given drawable to a Gray
 * image. This method may be used to simulate the color of disable icons in
 * Honeycomb's ActionBar.
 * 
 * @return a mutated version of the given drawable with a color filter
 *         applied.
 */
public static Drawable convertDrawableToGrayScale(Drawable drawable) {
    if (drawable == null) {
        return null;
    }
    Drawable res = drawable.mutate();
    res.setColorFilter(Color.GRAY, Mode.SRC_IN);
    return res;
}

Simply call setImageButtonEnabled(); the only downside is you need the image's resource ID in here because it's not possible to revert a transformed icon back into the original.

if you want to disable an image button,on click event, set the the property "setEnabled" to false

Ex: imgButton.setEnabled(false);