간단한 Android 앱을 만들어서 몇 가지 멋진 것들을 가지고 놀고 Android가 실제로 어떻게 작동하는지 테스트 해 볼 수 있습니다. 지금까지 Navigation Drawer, 하나의 액티비티에 여러 프래그먼트 및 데이터 소스 연결을 성공적으로 통합 할 수있었습니다. 내 문제는 목록에서 항목을 삭제할 수 있도록 긴 클릭 수신기를 만들려고 할 때 앱이 '예기치 않게 닫힙니다'입니다. WeekFragment, MonthFragment 및 CustomFragment라는 3 개의 조각이 있습니다.Android long click listener
public static WeekFragment newInstance(String param1, String param2) {
WeekFragment fragment = new WeekFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public WeekFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_week, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MainActivity)activity).onSectionAttached(getArguments().getInt(ARG_SECTION_NUMBER));
}
@Override
public void onDetach() {
super.onDetach();
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
dataSource = new DataSource(getActivity());
dataSource.open();
trans = dataSource.getAllTransactions("Date");
itemAdapter = new ItemAdapter(getActivity(), R.layout.list_item, trans);
listView = (ListView) getView().findViewById(R.id.transactionListWeek);
listView.setLongClickable(true);
listView.setAdapter(itemAdapter);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
listView.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View view, int position, long row_id) {
Toast.makeText(getActivity(), "PLS WORK", Toast.LENGTH_LONG).show();
return true;
}
});
}
다른 두 조각은 동일한 문제를 일으키며 로그에 오류가 표시되지 않았습니다. (저는 Android Studio를 사용하고 있습니다).
도움이 될 것입니다.
편집 :
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
에 : 위해 로그 캣 스택 추적
07-11 22:54:48.125 25117-25117/financialtracker.app E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: financialtracker.app, PID: 25117
java.lang.NullPointerException
at com.android.internal.policy.impl.PhoneWindow$DecorView$ActionModeCallbackWrapper.onCreateActionMode(PhoneWindow.java:3005)
at com.android.internal.app.ActionBarImpl$ActionModeImpl.dispatchOnCreate(ActionBarImpl.java:1021)
at com.android.internal.app.ActionBarImpl.startActionMode(ActionBarImpl.java:550)
at android.app.Activity.onWindowStartingActionMode(Activity.java:5191)
at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.onWindowStartingActionMode(ActionBarActivityDelegateICS.java:341)
at com.android.internal.policy.impl.PhoneWindow$DecorView.startActionMode(PhoneWindow.java:2617)
at com.android.internal.policy.impl.PhoneWindow$DecorView.startActionModeForChild(PhoneWindow.java:2604)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.ViewGroup.startActionModeForChild(ViewGroup.java:675)
at android.view.View.startActionMode(View.java:4731)
at android.widget.AbsListView.performLongPress(AbsListView.java:3565)
at android.widget.AbsListView$CheckForLongPress.run(AbsListView.java:3521)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)
logcat에서 stacktrace를 게시하십시오. –
또한 minSdkVersion은 어떻게 설정됩니까? –
minSdkVersion이 19로 설정되었습니다 – Macon