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

这是一个有点笨拙的方法,但它是有效的;你可以在RecyclerView中启用/禁用滚动。

这是一个空的RecyclerView。OnItemTouchListener窃取每个触摸事件,从而禁用目标RecyclerView。

public class RecyclerViewDisabler implements RecyclerView.OnItemTouchListener {

    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        return true;
    }

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

    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }
}

使用它:

RecyclerView rv = ...
RecyclerView.OnItemTouchListener disabler = new RecyclerViewDisabler();

rv.addOnItemTouchListener(disabler);        // disables scolling
// do stuff while scrolling is disabled
rv.removeOnItemTouchListener(disabler);     // scrolling is enabled again 

其他回答

重写onTouchEvent()和onInterceptTouchEvent()并返回false,如果你根本不需要OnItemTouchListener。 这不会禁用ViewHolders的OnClickListeners。

public class ScrollDisabledRecyclerView extends RecyclerView {
    public ScrollDisabledRecyclerView(Context context) {
        super(context);
    }

    public ScrollDisabledRecyclerView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public ScrollDisabledRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public boolean onTouchEvent(MotionEvent e) {
        return false;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent e) {
        return false;
    }
}

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()

另一个替代方案是setLayoutFrozen,但它带来了一堆其他副作用。

https://developer.android.com/reference/android/support/v7/widget/RecyclerView.html setLayoutFrozen(布尔)

创建继承RecyclerView类的类

public class NonScrollRecyclerView extends RecyclerView {

    public NonScrollRecyclerView(Context context) {
        super(context);
    }

    public NonScrollRecyclerView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public NonScrollRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
}

这将禁用滚动事件,但不会禁用单击事件

在XML中使用它,执行以下操作:

  <com.yourpackage.xyx.NonScrollRecyclerView 
     ...
     ... 
  />

Add

android:descendantFocusability="blocksDescendants"

在你的子SrollView或NestedScrollView(和父ListView, recyclerview和gridview任意一个)