Question

我创建了一个ListView，并且TextView中有ListView。

身份TextView为value_text。我使用viewHolder.value_text获取TextView，如下面的代码。

public View getView(final int position, View view, ViewGroup parent) {
            // TODO Auto-generated method stub

            final ViewHolder viewHolder;
            Log.d(TAG, "getView");
            if(view == null){
                view = mInflator.inflate(R.layout.streamid_data, null);
                viewHolder = new ViewHolder();
                viewHolder.value_text = (TextView) view.findViewById(R.id.Value_text);
                viewHolder.value_text.setText("1");

            }else {
                viewHolder = (ViewHolder) view.getTag();
            }
            return view;
        }

我想使用thread并更改text的{{1}}。但似乎无法获得viewHolder.value_text中的value_text。 thread位于runnable之外。

getView method

如何在final Runnable setList = new Runnable() { @Override public void run() { // TODO Auto-generated method stub //change the text of value_text } };之外获取TextView; ？

Answer 1

使ViewHolder变量全局化。然后你可以在Thread中访问textview。

     // Global in Adapter Class
     ViewHolder accessable_ViewHolder;


    public View getView(final int position, View view, ViewGroup parent) {
        // TODO Auto-generated method stub

        Log.d(TAG, "getView");
        if(view == null){
            view = mInflator.inflate(R.layout.streamid_data, null);
            ViewHolder viewHolder = new ViewHolder();
            viewHolder.value_text = (TextView) view.findViewById(R.id.Value_text);
            viewHolder.value_text.setText("1");

        }else {
            accessable_ViewHolder= (ViewHolder) view.getTag();
        }
        return view;
    }



 // Thread

 final Runnable setList = new Runnable() {

    @Override
    public void run() {
        // TODO Auto-generated method stub
        //change the text of value_text

        accessable_ViewHolder.value_text.setText("Value set from Thread");
    }
 };

如何在Android中的ListView中获取TextView？

1 个答案: