core/java/android/widget/ImageButton.java

/*
 * Copyright (C) 2007 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 android.widget;

import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.RemoteViews.RemoteView;

import java.util.Map;

/**
 * <p>
 * An image button displays an image that can be pressed, or clicked, by the
 * user.
 * </p>
 *
 * <p><strong>XML attributes</strong></p>
 * <p>
 * See {@link android.R.styleable#ImageView Button Attributes},
 * {@link android.R.styleable#View View Attributes}
 * </p>
 */
@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;
    }
}