我不能在RecyclerView中禁用滚动。我尝试调用rv.setEnabled(false),但我仍然可以滚动。

我如何禁用滚动?


当前回答

我知道这个问题已经有了一个公认的答案,但是这个解决方案没有考虑到我遇到的用例。

我特别需要一个标题项,仍然是可点击的,但禁用了RecyclerView的滚动机制。这可以通过以下代码来完成:

recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
                            @Override
     public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
         return e.getAction() == MotionEvent.ACTION_MOVE;
     }

     @Override
     public void onTouchEvent(RecyclerView rv, MotionEvent e) {

     }

     @Override
     public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }
});

其他回答

有一种使用标准功能禁用滚动的更直接的方法(从技术上讲,它更确切地说是拦截滚动事件,并在满足条件时结束它)。RecyclerView有一个方法叫做addOnScrollListener(OnScrollListener监听器),使用这个你可以停止滚动,就像这样:

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
        super.onScrollStateChanged(recyclerView, newState);
        if (viewModel.isItemSelected) {
            recyclerView.stopScroll();
        }
    }
});

Use case: Let's say that you want to disable scrolling when you click on one of the items within RecyclerView so you could perform some actions with it, without being distracted by accidentally scrolling to another item, and when you are done with it, just click on the item again to enable scrolling. For that, you would want to attach OnClickListener to every item within RecyclerView, so when you click on an item, it would toggle isItemSelected from false to true. This way when you try to scroll, RecyclerView will automatically call method onScrollStateChanged and since isItemSelected set to true, it will stop immediately, before RecyclerView got the chance, well... to scroll.

注意:为了更好的可用性,尝试使用GestureListener而不是OnClickListener来防止意外点击。

下面是我如何使用数据绑定:

            <android.support.v7.widget.RecyclerView
                android:id="@+id/recycler_view"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:clipChildren="false"
                android:onTouch="@{(v,e) -> true}"/>

在“true”的地方,我使用了一个基于条件改变的布尔变量,这样回收器视图就会在禁用和启用之间切换。

写了一个kotlin版本:

class NoScrollLinearLayoutManager(context: Context?) : LinearLayoutManager(context) {
    private var scrollable = true

    fun enableScrolling() {
        scrollable = true
    }

    fun disableScrolling() {
        scrollable = false
    }

    override fun canScrollVertically() =
            super.canScrollVertically() && scrollable


    override fun canScrollHorizontally() =
            super.canScrollVertically()

 && scrollable
}

用法:

recyclerView.layoutManager = NoScrollLinearLayoutManager(context)
(recyclerView.layoutManager as NoScrollLinearLayoutManager).disableScrolling()

API 21及以上版本:

不需要java代码。 你可以设置android:nestedScrollingEnabled="false" 在xml:

<android.support.v7.widget.RecyclerView
     android:id="@+id/recycler"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:clipToPadding="true"
     android:nestedScrollingEnabled="false"
     tools:listitem="@layout/adapter_favorite_place">

真正的答案是

recyclerView.setNestedScrollingEnabled(false);

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