Android 让你的SeekBar 也支持长按事件(2)

3、实现长按事件的接口函数

/**
     * 获取一个handler 对象
     * @param 0代表onTouch 1代表onChange
     * @param 视图对象
     * @param 进度
     * @return 返回一个handler对象
     */
    public Handler getHandler(final int j, final View v, final int progress) {
        Handler h = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                // TODO Auto-generated method stub
                switch (j) {
                case 0:
                    if (msg.arg1 == 3) {
                        if (longClick != null) {
                            longClick.onLongClick(v);
                        }
                    }
                    break;
                case 1:
                    if (msg.arg1 == 1) {
                        pp = progress;
                    }
                    if (msg.arg1 == 2) {
                        if (pp != progress) {
                            i = 0;
                        }
                    }
                    if (msg.arg1 == 3) {
                        i = 0;
                        if (pp == progress) {
                            if (longClick != null) {
                                longClick.onLongClick(seekBarDemo.this);
                            }
                        }
                    }
                    break;
                }
                super.handleMessage(msg);
            }
        };
        return h;
    }

4、并为重写的SeekBar 添加自己的OnSeekBarChangeListener 监听事件

这里我们首先定义一个onChange 接口 ，接口中有三未实现的方法，分别代表SeekBar 的三种状态

/**
     * 进度改变接口
     * @author terry
     *
     */
    public interface onChange {
        public void onStopTrackingTouch(seekBarDemo seekBar);

public void onStartTrackingTouch(seekBarDemo seekBar);

public void onProgressChanged(seekBarDemo seekBar, int progress,
                boolean fromUser);
    }