Android RecyclerView:notifyDataSetChanged()IllegalStateException

找到一个简单的解决方

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

    private RecyclerView mRecyclerView; 

    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);
        mRecyclerView = recyclerView;
    }

    private CompoundButton.OnCheckedChangeListener checkedChangeListener 
    = (compoundButton, b) -> {
        final int position = (int) compoundButton.getTag();
        // This class is used to make changes to child view
        final Event event = mDataset.get(position);
        // Update state of checkbox or some other computation which you require
        event.state = b;
        // we create a runnable and then notify item changed at position, this fix crash
        mRecyclerView.post(new Runnable() {
            @Override public void run() {
                notifyItemChanged(position));
            }
        });
    }
}

在这里,我们为recyclerview准备好处理它时创建一个可运行的notifyItemChanged.

当您有消息错误时:

Cannot call this method while RecyclerView is computing a layout or scrolling

简单,只需执行导致异常的原因:

RecyclerView.post(new Runnable() {
    @Override
    public void run() {
        /** 
        ** Put Your Code here, exemple:
        **/
        notifyItemChanged(position);
    }
});

您应该将方法'setOnCheckedChangeListener()'移动到ViewHolder,它是适配器上的内部类.

onBindViewHolder()不是初始化的方法ViewHolder.此方法是刷新每个回收物品的步骤.当你打电话时notifyDataSetChanged(),onBindViewHolder()会被称为每个项目的次数.

因此,如果您notifyDataSetChanged()输入onCheckChanged()并初始化checkBox onBindViewHolder(),则由于循环方法调用,您将获得IllegalStateException.

单击复选框 - > onCheckedChanged() - > notifyDataSetChanged() - > onBindViewHolder() - >设置复选框 - > onChecked ...

简单地说,你可以通过在Adapter中放一个标志来解决这个问题.

试试这个,

private boolean onBind;

public ViewHolder(View itemView) {
    super(itemView);
    mCheckBox = (CheckBox) itemView.findViewById(R.id.checkboxId);
    mCheckBox.setOnCheckChangeListener(this);
}

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    if(!onBind) {
        // your process when checkBox changed
        // ...

        notifyDataSetChanged();
    }
}

...

@Override
public void onBindViewHolder(YourAdapter.ViewHolder viewHolder, int position) {
    // process other views 
    // ...

    onBind = true;
    viewHolder.mCheckBox.setChecked(trueOrFalse);
    onBind = false;
}

我不太清楚,但我也有同样的问题.我通过使用来解决这个onClickListner问题checkbox

viewHolder.mCheckBox.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if (model.isCheckboxBoolean()) {
                model.setCheckboxBoolean(false);
                viewHolder.mCheckBox.setChecked(false);
            } else {
                model.setCheckboxBoolean(true);
                viewHolder.mCheckBox.setChecked(true);
            }
            notifyDataSetChanged();
        }
    });

试试这个,这可能会有所帮助!

protected void postAndNotifyAdapter(final Handler handler, final RecyclerView recyclerView, final RecyclerView.Adapter adapter) {
        handler.post(new Runnable() {
            @Override
            public void run() {
                if (!recyclerView.isComputingLayout()) {
                    adapter.notifyDataSetChanged();
                } else {
                    postAndNotifyAdapter(handler, recyclerView, adapter);
                }
            }
        });
    }

您可以在进行更改之前重置上一个侦听器,但不会出现此异常.

private CompoundButton.OnCheckedChangeListener checkedListener = new CompoundButton.OnCheckedChangeListener() {                      
                        @Override
                        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                            //Do your stuff
                    });;

    @Override
    public void onBindViewHolder(final ViewHolder holder, final int position) {
        holder.checkbox.setOnCheckedChangeListener(null);
        holder.checkbox.setChecked(condition);
        holder.checkbox.setOnCheckedChangeListener(checkedListener);
    }