Question

我需要将点击按钮添加到listview中，但我使用的是回收站视图适配器。

我收到此错误：

Error:(200, 54) error: no suitable constructor found for ArrayAdapter(<anonymous OnClickListener>,int,ArrayList<String>)
constructor ArrayAdapter.ArrayAdapter(Context,int,int) is not applicable
(argument mismatch; <anonymous OnClickListener> cannot be converted to Context)
constructor ArrayAdapter.ArrayAdapter(Context,int,String[]) is not applicable
(argument mismatch; <anonymous OnClickListener> cannot be converted to Context)
constructor ArrayAdapter.ArrayAdapter(Context,int,List<String>) is not applicable
(argument mismatch; <anonymous OnClickListener> cannot be converted to Context)

这是代码：

holder.button.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            //holder.lw.setA
           String commento= (holder.tw.getText().toString());
           // holder.lw.setAdapter(adapter);
             ArrayList<String> arrayList= new ArrayList<String>();
            final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayList);

            arrayList.add(commento);
            // next thing you have to do is check if your adapter has changed
            holder.lw.setAdapter(adapter);
            adapter.notifyDataSetChanged();


        }

    });

有人可以帮帮我吗？致谢

Answer 1

替换＆＃34; 此＆＃34;行

中的上下文

 final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayList);

传递VideoAdapter中的上下文

 VideoAdapter videoAdapter = new VideoAdapter (this);

VideoAdapter的构造函数

  public VideoAdapter (Context context) {
       this.mContext = context;
    }

像这样初始化

 final ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext , android.R.layout.simple_list_item_1, arrayList);

正如您所看到的，ArrayAdapter的构造函数需要Context而不是onClickListener refrence

注意：您可以在VideoAdapter构造函数中传递尽可能多的参数，这只是向您展示如何传递上下文的方法。

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