Android Open Source - screenstandby Number Picker Button

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*******************************************************************************
 * Copyright (c) 2014 Hoang Nguyen.// www.  j a v a 2s  .  co m
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Hoang Nguyen - initial API and implementation
 ******************************************************************************/
package com.nkahoang.screenstandby;

import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.ImageButton;

/**
 * This class exists purely to cancel long click events.
 */
public class NumberPickerButton extends ImageButton {

    private NumberPicker mNumberPicker;
    
    public NumberPickerButton(Context context, AttributeSet attrs,
            int defStyle) {
        super(context, attrs, defStyle);
    }

    public NumberPickerButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public NumberPickerButton(Context context) {
        super(context);
    }
    
    public void setNumberPicker(NumberPicker picker) {
        mNumberPicker = picker;
    }
    
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        cancelLongpressIfRequired(event);
        return super.onTouchEvent(event);
    }
    
    @Override
    public boolean onTrackballEvent(MotionEvent event) {
        cancelLongpressIfRequired(event);
        return super.onTrackballEvent(event);
    }
    
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_DPAD_CENTER)
                || (keyCode == KeyEvent.KEYCODE_ENTER)) {
            cancelLongpress();
        }
        return super.onKeyUp(keyCode, event);
    }
    
    private void cancelLongpressIfRequired(MotionEvent event) {
        if ((event.getAction() == MotionEvent.ACTION_CANCEL)
                || (event.getAction() == MotionEvent.ACTION_UP)) {
            cancelLongpress();
        }
    }

    private void cancelLongpress() {
        if (R.id.increment == getId()) {
            mNumberPicker.cancelIncrement();
        } else if (R.id.decrement == getId()) {
            mNumberPicker.cancelDecrement();
        }
    }
}

Java Source Code List