android - 在类外更新 ArrayAdapter

Question

我在实现 ArrayAdapter 的子类之外有一个自定义 Dialog 类，有没有办法可以从另一个类或扩展 View 调用 notifyDataSetChanged()？

//This is a Subclass
public class myClass extend ArrayAdapter{


   myDialog.showPopDialog();

}


// another class
public class myDialog implements onClickListener{

  public void showPopDialog(){
    Button mybutton = (Button) findViewbyId(R.id.mybutton);
    mybutton.setOnClickListener(this)
   }

    @Override
    public void onClick(View v) {

        // I want to call notifyDataSetChanged() from here
   }
}

Answer 1

希望对你有帮助

In Your **Actitvity** Class :

PassengerListView myAdapter;


//From where u have to call u r notifyDataSetChanged

myAdapter = new PassengerListView(MainActivity.this, allValues);
listView.setAdapter(myAdapter);
myAdapter.notifyDataSetChanged();