[英]Fragment content does not show up until I switch it and select it again
在這里,您獲得了Fragment的onCreate方法,該方法可以加載所有內容:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bundle = this.getArguments();
debts = bundle.getParcelableArrayList("list");
adapter = new CardAdapter(getActivity(), android.R.color.holo_blue_dark);
for (int i=0; i<debts.size();++i) {
Debt d = debts.get(i);
Card card = new Card(d.getSecondUser(),d.getSubject());
adapter.add(card);
}
}
在這里的onActivityCreated方法中,我為列表設置了適配器:
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
CardListView list = (CardListView) getView().findViewById(R.id.newCard);
list.setCardTheme(CardTheme.Light);
list.setAdapter(adapter);
}
如果我使用已經加載的卡的ArrayList,它會起作用,但不是這樣。 我幾乎嘗試了所有東西...非常感謝。
更新:即使我嘗試了您提供給我的解決方案,它也在不斷發生,現在我的代碼:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bundle = this.getArguments();
debts = bundle.getParcelableArrayList("list");
adapter = new CardAdapter(getActivity(), android.R.color.holo_blue_dark);
for (int i=0; i<debts.size();++i) {
Debt d = debts.get(i);
Card card = new Card(d.getSecondUser(),d.getSubject());
adapter.add(card);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_debts, container,
false);
CardListView list = (CardListView) rootView.findViewById(R.id.newCard);
list.setCardTheme(CardTheme.Light);
list.setAdapter(adapter);
return rootView;
}
您應該在onCreateView()方法中初始化cardListView。 在onActivityCreated()方法之前調用onCreateView()。 onCreateView()應該是片段視圖初始化時的關鍵點。
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//use your layout file instead of R.layout.fragment_main
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
CardListView list = rootView.findViewById(R.id.newCard);
list.setCardTheme(CardTheme.Light);
list.setAdapter(adapter);
}
請查看Fragments的生命周期 。
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