我正在尝试将 Cardslib 库与可以刷出和撤消的卡片列表一起使用。我的问题是撤消栏总是显示并且单击撤消没有任何作用。通过调试,我意识到我的问题是 CardArrayAdapter 需要一个在尝试检索取消栏的 LinearLayout 时将使用的上下文。但是当我将主活动作为上下文传递时,它找不到撤消栏。
我的代码如下:
MainActivity.java:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate( savedInstanceState );
setContentView( R.layout.main_layout );
BudgetCardFragment budgetCardFragment = (BudgetCardFragment)getSupportFragmentManager().
findFragmentById( R.id.fragment_budget_cards );
}
main_layout.xml:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment_budget_cards"
android:name="com.test.view.fragment.BudgetCardFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.test.Main"
tools:layout="@android:layout/list_content" />
BudgetCardFragment.java:
public class BudgetCardFragment extends Fragment {
public BudgetCardFragment(){}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate( R.layout.fragment_budget_card, container, true );
CardListView listView = (CardListView)rootView.findViewById(R.id.myList);
List<Card> cards= new ArrayList<Card>();
for (int i = 0; i < 3; i++) {
BudgetCard budgetCard = new BudgetCard( getActivity(), mListCategory.get(i).getName() );
cards.add( budgetCard );
}
BudgetCardAdapter budgetCardAdapter = new BudgetCardAdapter( getActivity(), cards );
if ( listView != null ) {
listView.setAdapter( budgetCardAdapter );
}
return rootView;
}
}
fragment_budget_card.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.test.Main">
<it.gmariotti.cardslib.library.view.CardListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/myList"/>
<!-- Include undo message layout -->
<include layout="@layout/list_card_undo_message"/>
</RelativeLayout>
BudgetCardAdapter.java:
public class BudgetCardAdapter extends CardArrayAdapter {
private Context mContext;
private List<Card> cards;
public BudgetCardAdapter( Context context, List<Card> cards ) {
super( context, cards );
this.mContext = context;
this.cards = cards;
//Enable undo controller
setEnableUndo(true);
}
@Override
public int getCount() {
return cards.size();
}
@Override
public Card getItem(int position) {
return cards.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
}
我得到的结果是我的卡片列表(这很好),当我还没有刷出任何卡片时,撤消栏就在屏幕中间(这不好)。感谢您的帮助,我真的整天都在努力寻找解决方案。