我的活动继承自 ListActivity 并使用AndroidAnnotations。虽然.onListItemClick
工作正常,但列表项的上下文菜单根本不会显示,甚至不会调用.onCreateContextMenu
,但在长按到列表项后会.onListItemClick
触发。这是我的代码:
@OptionsMenu(R.menu.places)
@EActivity(R.layout.places)
public class PlacesPicker extends ListActivity {
private static String[] DATA_SOURCE = { PlacesDB.PLACE_NAME, PlacesDB.PLACE_DESC };
private static int[] DATA_DESTINATION = { R.id.place_name, R.id.place_desc };
public static ListView lv;
@Bean
PlacesDB db;
Cursor cursor;
@AfterInject
public void init() {
cursor = db.getPlaces(null, null);
startManagingCursor(cursor);
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.place_item, cursor, DATA_SOURCE, DATA_DESTINATION);
setListAdapter(adapter);
lv = getListView();
registerForContextMenu(lv);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// It works fine
// It works even after long tap instead of context menu!
Toast.makeText(this, "Item clicked!", Toast.LENGTH_SHORT).show();
}
@OptionsItem
public void addPlace(){
// It works OK too
startActivity(new Intent(this, PlaceEditor_.class));
}
public void editPlace() {
// ...skipped for brevity...
}
public void deletePlace() {
// ...skipped...
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
// This isn't ever called!
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.place_options, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
// ...skipped...
}
}
有人能告诉我这里有什么问题吗?谢谢你的进步。
答案 0 :(得分:5)
我明白了!这是我自己的错误:.init()
方法必须注释为@AfterViews
,而不是@AfterInject
。它的工作原理如下: ListActivity 在创建时有一个默认的 ListView ,然后注入我的bean PlacesDB ,然后触发@AfterInject
方法,即.init()
,其中默认 ListView 已注册上下文菜单,之后 <{em>} R.layout.places
已设置作为另一个 ListView 的活动的内容视图,不已注册!因此,将注释更改为@AfterViews
会使.init()
在 .setContentView(R.layout.places)
之后运行,然后从布局中为我自己的 ListView 注册上下文菜单,一切都开始工作:)