java - 构造函数 ArrayAdapter 未定义

Question

我试图将数据从 Intent 传递到 ListView ，但出现“构造函数 ArrayAdapter 未定义”错误。这是我的代码:

   public class Loglist extends Activity {

public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.diary_edit);

    TextView Exe =(TextView) findViewById(R.id.txtName2);
    Exe.setText(getIntent().getExtras().getString("extraname"));

     populateListView1();

}

      private void populateListView1(){



          TextView Name1;
        Name1.setText(getIntent().getExtras().getString("extraname"));  

          ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this,R.layout.loglist,Name1);


         ListView List =(ListView) findViewById(R.id.listViewdiary);
         List.setAdapter(adapter2);

      }

Answer 1

Buddy，您正在尝试传入 TextView 的实例，而您应该传入 String[]。因此，声明一个要传入的 String 数组，如下所示:

private void populateListView1(){

    TextView Name1;
    String string1 = getIntent().getExtras().getString("extraname");
    Name1.setText(string1);  

    String[] array = new String[]{string1};
    ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, R.layout.loglist, array);


     ListView List =(ListView) findViewById(R.id.listViewdiary);
     List.setAdapter(adapter2);

}