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java – 在RecyclerView中从ViewHolder调用活动?

发布时间:2020-12-15 02:50:33 所属栏目:Java 来源:网络整理
导读:我有一个RecyclerView加载我的String数组的内容工作正常,但我想根据他们按下的视图打开一个新的活动. 我所做的是创建一个名为类的数组,如下所示: array name="classes" itemClassOne/item itemClassTwo/item itemClassThree/item itemClassFour/item/array
我有一个RecyclerView加载我的String数组的内容工作正常,但我想根据他们按下的视图打开一个新的活动.

我所做的是创建一个名为类的数组,如下所示:

<array name="classes">
    <item>ClassOne</item>
    <item>ClassTwo</item>
    <item>ClassThree</item>
    <item>ClassFour</item>
</array>

它们存储在一个数组中,并传递给我的MainActivityList适配器:

String[] classes = resource.getStringArray(R.array.classes);
MainActivityList adapter = new MainActivityList(titles,content,images,classes);
recyclerView.setAdapter(adapter);

我已经设法将OnClickListener添加到ViewHolder并输出为每个视图分配给日志的??类,但是我无法弄清楚或开始工作,如何启动另一个活动.

例如,类名将类似于ClassOne.class

public class MainActivityList extends RecyclerView.Adapter<MainActivityList.ViewHolder>  {
    private String[] mTitles;
    private String[] mContent;
    private String[] mClasses;
    private TypedArray mImages;
    private Context context;

    public MainActivityList(String[] titles,String[] content,TypedArray images,String[] classes) {
        this.mTitles = titles;
        this.mContent = content;
        this.mImages = images;
        this.mClasses = classes;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup,int i) {
        final View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_main_card,viewGroup,false);
        ViewHolder vh = new ViewHolder(v);

        v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                ViewHolder vh = (ViewHolder)v.getTag();
                Log.v("DEBUG","Clicked" + vh.classes);
            }
        });
        return vh;
    }

    public void onBindViewHolder(ViewHolder holder,int position) {
        holder.titleView.setText(mTitles[position]);
        holder.contentView.setText(mContent[position]);
        holder.imageView.setImageDrawable(mImages.getDrawable(position));
        holder.classes = mClasses[position];
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        public  TextView titleView;
        public  TextView contentView;
        public  ImageView imageView;
        public String classes;

        public ViewHolder(View v) {
            super(v);
            titleView = (TextView) v.findViewById(R.id.card_title);
            contentView = (TextView) v.findViewById(R.id.card_content);
            imageView = (ImageView)v.findViewById(R.id.card_image);
            v.setTag(this);
        }
    }

    @Override
    public int getItemCount() {
        return mTitles.length;
    }

}

解决方法

我也在寻找解决方案,我找到了这篇文章:
http://venomvendor.blogspot.sg/2014/07/setting-onitemclicklistener-for-recycler-view.html

通过使用OnItemClickListener接口,您应该能够在活动中调用startActivity.

adapter.SetOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(View v,int position) {
        // This is in an Activity so should be able to start new activity,etc.


    }
});

更新:我已经测试过,博客中提到的方法适合我.

(编辑:李大同)

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