android:如何增加 android 中 ListView 项目的长按时间？

Question

我有一个自定义 listview，其中的项目水平滚动。我想对 listview 项目执行单点触摸和长按项目 5 秒。这该怎么做。如何将 listview 项目的 longpress 时间间隔增加到 5 秒。

Answer 1

这会更准确地复制 onLongPress，因为它不会在执行前等待用户抬起手指。专为 ViewPager 编写，但应该能够应用类似的逻辑。

// long press duration in milliseconds
public static final int LONG_PRESS_DURATION = 2000;

private boolean mIsTouching = false;

@Override
public boolean onTouchEvent(MotionEvent event) {

    if (event.getAction() == event.ACTION_DOWN) {
        mIsTouching = true;
    } else if (event.getAction() == event.ACTION_UP) {
        mIsTouching = false;
    }

    return super.onTouchEvent(event);
}

@Override
public void onLongPress(MotionEvent event) {

    // subtracts the system set timeout since that time has already occured at this point
    int duration = LONG_PRESS_DURATION - getLongPressTimeout();

    Handler handler = new Handler();
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            if (mIsTouching) {
                do something...
            }
        }
    }, duration > 0 ? duration : 0);
}