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问题描述

我要强调的项目 recyclerview 时,用户点击上的任何项目,previous项目将为未选请帮助?

I want to highlight the item of recyclerview when user click on any item and previous item will be unselected please help?

推荐答案

有关这一点,你必须写一个选择。

For this you have to write a selector.

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/colorAccent" android:state_selected="true" />
    <item android:drawable="@color/ash" android:state_selected="false" />
    <item android:drawable="@color/ash" />
</selector>

在-为了获得对的onClick所期望的行为你所做的项目中选择明确。

In-order to get the desired behavior on the onClick you have to make the item selected explicitly.

public class CellAdapter extends RecyclerView.Adapter<CellAdapter.ViewHolder> {
    private Context context;
    private View prevView;

    public CellAdapter(Context context) {
        this.context = context;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_cell, parent, false);
        CellAdapter.ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {

    }

    @Override
    public int getItemCount() {
        return 10;
    }

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public ViewHolder(View itemView) {
            super(itemView);
            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            if (prevView != null) {
                prevView.setSelected(false);
            }
            v.setSelected(true);
            prevView = v;
            Toast.makeText(context, String.valueOf(getAdapterPosition()), Toast.LENGTH_SHORT).show();
        }
    }
}

和确保你已经点击设置如此recycleView。

And make sure that you have Set clickable true for recycleView.

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycle_view"
    android:layout_width="wrap_content"
    android:clickable="true"
    android:focusable="true"
    android:layout_height="wrap_content" />

这篇关于如何跟踪回收视图项项目选择点击?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-17 14:39
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