Question

有没有办法更改listview中的文本，该文件由ArrayAdapter填充？

我的阵列：

public String[] trainingstage = {"Hello", "Hello 2"};

ArrayAdapter

ArrayAdapter<String> adapter = new ArrayAdapter<>(this,

android.R.layout.simple_list_item_1, trainingstage);

setListAdapter(adapter);

ListView listView = getListView();

listView.setOnItemClickListener(this);

OnItem：

public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        switch (position) {
        //untrained
        case 0: 
         //here the text in the listview should change from "Hello" to "BYE"

        case 1:
        //here the text in the listview should change from "Hello 2" to "BYE 2" 
  }

感谢您的帮助！

Answer 1

你可以达到你想要的效果：

public void onItemClick(AdapterView<?> parent, View view, int position,
          long id) {

      TextView tv = (TextView)view.findViewById(android.R.id.text1);

      switch (position) {
      //untrained
      case 0: 
       //here the text in the listview should change from "Hello" to "BYE"
          tv.setText("BYE");
          break;

      case 1:
      //here the text in the listview should change from "Hello 2" to "BYE 2" 
          tv.setText("BYE 2");
          break;
      }
  }

什么是android.R.id.text1

ArrayAdapter的构造函数使用android.R.layout.simple_list_item_1 xml布局作为其第二个参数，此布局有一个孩子 - TextView ID为android.R.id.text1。

Answer 2

我认为其他解决方案是修改您的数据，然后使用notifyDataSetChanged。例如：

public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        switch (position) {
        case 0: 
            trainingstage[position] = "BYE 1"; // or trainingstage[0]
            adapter.notifyDataSetChanged();
            break;

        case 1:
            trainingstage[position] = "BYE 2"; // or trainingstage[1]
            adapter.notifyDataSetChanged();
            break;
        }
  }

由于您已经过滤了该位置，因此可以将trainingstage[position]替换为trainingstage[0]或1。

更改列表视图的文本，该文本由ArrayAdapter填充

2 个答案: