Remove workaround for bug that was fixed a while ago.

/*

 * Copyright (C) 2012 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.internal.view;

import android.content.Context;

import android.util.AttributeSet;

import android.view.ViewGroup;

import android.widget.ImageButton;

public class ImageButtonNoParentPress extends ImageButton {

    public ImageButtonNoParentPress(Context context) {

        super(context);

    }

    public ImageButtonNoParentPress(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    public ImageButtonNoParentPress(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

    }

    @Override

    public void setPressed(boolean pressed) {

        // Normally parents propagate pressed state to their children.

        // We don't want that to happen here; only press if our parent isn't.

        super.setPressed(((ViewGroup) getParent()).isPressed() ? false : pressed);

    }

}

                  android:textAppearance="?android:attr/textAppearanceSmall" />

    </LinearLayout>

    <com.android.internal.view.ImageButtonNoParentPress

    <ImageButton

        android:layout_width="56dp"

        android:layout_height="56dp"

        android:id="@+id/expand_button"