android - 更改由 ArrayAdapter 填充的 ListView 的文本

Question

有什么方法可以更改由 ArrayAdapter 填充的 ListView 中的文本？

我的数组:

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

数组适配器

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

android.R.layout.simple_list_item_1, trainingstage);

setListAdapter(adapter);

ListView listView = getListView();

listView.setOnItemClickListener(this);

在项目上:

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

你可以这样实现你想要的:

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 布局作为它的第二个参数，这个布局有一个 child - TextView 与ID android.R.id.text1.