ViewSwitcher作为ListView项-如何在正确的ViewSwitcher项上调用.showNext()？

Question

我有一个带有ListView项目的ViewSwitcher。目标是点击一个列表项，在ViewSwitcher视图之间切换。点击按预期工作，但滚动离开一个被点击的项目，然后返回，有时更改哪个项目显示的第二个视图从ViewSwitcher。

下面是我的ListView项目布局，ViewSwitcher是@+id/ViewSwitcher：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android"
    android:layout_width  = "fill_parent"
    android:layout_height = "wrap_content" >

    <ViewSwitcher
        android:id                 = "@+id/details"
        android:layout_width       = "fill_parent"
        android:layout_height      = "fill_parent"
        android:measureAllChildren = "false" >

        <!-- two views I want to switch between are here -->

    </ViewSwitcher>
</RelativeLayout>

我的活动找到@id/details并调用.showNext()。

public class MyActivity extends ListActivity {
    private MySQLiteOpenHelper data;
    private SimpleCursorAdapter adapter;
    private Cursor cursor;

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

        String[] FROM = { "_id", "_id", "name", "name" };   
        int[] TO = { R.id.my_list_id, R.id.my_list_id2, R.id.my_list_name, R.id.my_list_name_details };

        data = new MySQLiteOpenHelper(this);
        cursor = data.myList();
        startManagingCursor(cursor);

        adapter = new SimpleCursorAdapter(this, R.layout.list_item, cursor, FROM, TO);
        setListAdapter(adapter);

        ListView list = getListView();
        list.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> adapter, View view, int position, long id) {
                ViewSwitcher item = (ViewSwitcher) view.findViewById(R.id.details);
                item.showNext();
            }
        });
    }
}

我认为我的问题可能是@id/details实际上并不是唯一的，因此当滚动时会发生未定义的行为。

如果是这样的话，那么如何为每个ViewSwitcher分配一个唯一的ID，或者如何找到调用.showNext()的正确的ViewSwitcher？

Answer 1

您的错误代码在

// Cursor/Adapter code here to populate list from SQLite DB.

请把密码寄出去

然而，下面是一些提示

ArrayAdapter

• Add

1. 扩展了ArrayList和
2. 中的所有项目，在ArrayList中保持每个ViewSwitcher

的状态

一个简单的方法是使ArrayList成为ArrayList of ViewSwitchers