它奇怪而奇怪，但似乎当我将 AnimatorListener 附加到我用于动画片段事务的 ObjectAnimator 时，实际上在动画完成之前稍微调用了回调。我使用侦听器将内容填充到片段中（来自 DB）。该操作有时可能需要很长时间（~200ms），当我在 onCreate 左右执行此操作时，它只会破坏动画，因为在动画过程中会返回并渲染内容......然后会有很多垃圾和口吃。 . 因此，当我将填充调用添加到侦听器中时，当数据库选择也需要很长时间时，它就会起作用。但有时它几乎是瞬时的，在这种情况下，当在动画结束之前调用回调时我会遇到问题。
大佬们知道怎么解决这个问题吗？下面是该片段的几乎全部代码。
所以基本上有两种方法可以解决这个问题..我可以完全找到另一种解决方案，如何在没有垃圾动画的情况下将内容填充到片段中，或者我可以找到一种方法来解决听众的问题。
还有一种我不喜欢的额外方式。我可以创建一个处理程序并调用 postDelayed..awful 解决方案:)
public class ImportantContactsFragment extends Fragment {
public static final String TAG = ImportantContactsFragment.class.getSimpleName();
private ListView list;
private Spinner departmentsSwitcher;
private Spinner facultiesSwitcher;
private ContactsAdapter adapter;
private ArrayList<ImportantContact> currentListOfPeople;
private int currentFaculty = 1;
private Department currentDeparment = Department.STUDY_DEPARTMENT;
private PullToRefreshAttacher mPullToRefreshAttacher;
private boolean boot = true;
private AsyncTask<Integer, ArrayList<ImportantContact>, ArrayList<ImportantContact>> task;
private ArrayList<Faculty> faculties;
private SpinnerAdapter departmentsSpinnerAdapter;
private SpinnerAdapter facultiesSpinnerAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
currentListOfPeople = new ArrayList<ImportantContact>();
faculties = new ArrayList<Faculty>(2);
currentDeparment = Department.STUDY_DEPARTMENT;
faculties.add(Faculty.getFEL());
faculties.add(Faculty.getFIT());
FrameLayout view = (FrameLayout) inflater.inflate(R.layout.important_contacts_fragment_list_layout, container, false);
departmentsSwitcher = (Spinner) view.findViewById(R.id.departmentsSpinner);
facultiesSwitcher = (Spinner) view.findViewById(R.id.facultiesSpinner);
facultiesSpinnerAdapter = new ArrayAdapter<Faculty>(getActivity(), R.layout.spinner_text_view, faculties);
departmentsSpinnerAdapter = new ArrayAdapter<Department>(getActivity(), R.layout.spinner_text_view, Department.values());
departmentsSwitcher.setAdapter(departmentsSpinnerAdapter);
facultiesSwitcher.setAdapter(facultiesSpinnerAdapter);
list = (ListView) view.findViewById(R.id.list);
adapter = new ContactsAdapter(getActivity(), R.layout.important_contacts_list_item, currentListOfPeople, list);
list.setAdapter(adapter);
list.requestFocus();
departmentsSwitcher.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
currentDeparment = (Department) departmentsSpinnerAdapter.getItem(position);
fillAdapterWithData(currentFaculty, currentDeparment);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
facultiesSwitcher.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
currentFaculty = position + 1;
fillAdapterWithData(currentFaculty, currentDeparment);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
return view;
}
@Override
public void onResume() {
super.onResume();
Tracking.onResume(this);
// fillAdapterWithData(currentFaculty, currentDeparment);
}
@Override
public void onPause() {
super.onPause();
if (task != null) {
task.cancel(true);
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getActivity().getActionBar().setTitle(getString(R.string.important_contacts));
}
public void fillAdapterWithData(int facultyId, Department department) {
if (boot) {
boot = false;
return;
}
currentListOfPeople.clear();
if (task != null) {
task.cancel(true);
}
task = new AsyncTask<Integer, ArrayList<ImportantContact>, ArrayList<ImportantContact>>() {
@Override
protected ArrayList<ImportantContact> doInBackground(Integer... params) {
return Controller.peopleDBController.getListOfImportantContactFromListOfContact(Controller.contactsDBController.searchRows(params[0], params[1]));
}
@Override
protected void onPostExecute(ArrayList<ImportantContact> importantContacts) {
// adapter.notifyDataSetChanged();
adapter.addAll(importantContacts);
}
};
// getActivity().setProgressBarVisibility(true);
task.execute(facultyId, department.ordinal());
adapter.addAll(Controller.peopleDBController.getListOfImportantContactFromListOfContact(Controller.contactsDBController.searchRows(facultyId, department.ordinal())));
}
@Override
public Animator onCreateAnimator(int transit, boolean enter, int nextAnim) {
if(enter){
Animator animator = AnimatorInflater.loadAnimator(getActivity(), R.anim.fragment_slide_anim);
if(animator!=null){
animator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
// fillAdapterWithData(currentFaculty, currentDeparment);
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
}
return animator;
}
else{
return super.onCreateAnimator(transit, enter, nextAnim);
}
}