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

通过触摸停止滚动,但通过命令继续滚动:

如果(appTopBarMessagesRV == null) { appTopBarMessagesRV = findViewById(R.id.mainBarScrollMessagesRV);

        appTopBarMessagesRV.addOnItemTouchListener(new RecyclerView.SimpleOnItemTouchListener() {
            @Override
            public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {

                if ( rv.getScrollState() == RecyclerView.SCROLL_STATE_DRAGGING)
                {
                     // Stop  scrolling by touch

                    return false;
                }
                return  true;
            }
        });
    }

其他回答

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) {

    }
});
recyclerView.addOnItemTouchListener(new RecyclerView.SimpleOnItemTouchListener() {
        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
            // Stop only scrolling.
            return rv.getScrollState() == RecyclerView.SCROLL_STATE_DRAGGING;
        }
    });

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 
     ...
     ... 
  />

如果你只是禁用RecyclerView的滚动功能,那么你可以使用setLayoutFrozen(true);RecyclerView的方法。但它不能禁用触摸事件。

your_recyclerView.setLayoutFrozen(true);

你可以创建一个不可滚动的回收器视图,它扩展了一个回收器视图类,如下所示:

import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;

import androidx.annotation.Nullable;
import androidx.recyclerview.widget.RecyclerView;

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 widthMeasure, int heightMeasure) {
        int heightMeasureCustom = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasure, heightMeasureCustom);
        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
}