我有一个带有ViewSwitcher项目的ListView。目标是点击列表项以在ViewSwitcher视图之间切换。点击按预期工作,但滚动远离点击项目然后返回有时会更改哪个项目显示ViewSwitcher中的第二个视图。
这是我的ListView项目布局,ViewSwitcher是@ + id / details:
<?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实际上并不唯一,因此在滚动时会发生未定义的行为。
如果是这种情况,那么我该如何为每个ViewSwitcher分配一个唯一的ID,或者找到正确的ViewSwitcher来调用.showNext()?
答案 0 :(得分:1)
您的错误代码在
中// Cursor/Adapter code here to populate list from SQLite DB.
请发布代码
但是这里有一些提示
一种简单的方法是使ArrayList成为ViewSwitchers的ArrayList