java - 将 CalendarView 值与 Firebase 日期值匹配，然后在 Recycler/CardView 中显示？
问题描述
我正在尝试在另一个 SO 用户CardView的以下帮助中实现我自己的。Fragment我认为我所做的一切都是正确的，但是我没有看到预期的结果，并认为故障出在其他地方..
我所拥有的是CalendarView在 a 内Fragment显示所选日期的TextViewusing setOnDateChangeListener。然后我有一个隐藏RecyclerView的，其中有一个，如果日期与存储在我的 Firebase 数据库中的日期匹配CardView，我试图调用它。我还在吗？CalendarView
我正在创建一个活动时间表，使用一个包含活动名称、日期、时间、描述的表单，所有这些都存储为strings，见下文：
我不知道push()在引用我的数据库时如何检索该值，所以我现在只是使用事件名称来方便..
这就是我所拥有的，它有点到处都是，因为我一直在这里和那里进行测试，但是如果您有任何问题，请告诉我。我尝试分离我的数据库引用以在不同的区域使用它们，但这不起作用任何一个。
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_schedule, container, false);
intentEvent = getActivity().getIntent().getStringExtra("name");
// ------------- firebase --------------
firebaseAuth = FirebaseAuth.getInstance();
currentUser = firebaseAuth.getCurrentUser();
uid = currentUser.getUid();
databaseReference = FirebaseDatabase.getInstance().getReference("user").child(uid).child("dogs").child(intentEvent);
eventReference = databaseReference.child("events");
dateRef = eventReference.child("date");
// -------------------------------------
calendarView = view.findViewById(R.id.calendarView);
scheduleTitle = view.findViewById(R.id.scheduleTitle);
noEventPlaceholder = view.findViewById(R.id.noEventPlaceholder);
addNewEvent = view.findViewById(R.id.addNewEvent);
eventRecycler = view.findViewById(R.id.eventRecycler);
eventRecycler.setVisibility(View.GONE);
eventLayoutManager = new LinearLayoutManager(getContext());
eventRecycler.setLayoutManager(eventLayoutManager);
FirebaseRecyclerOptions<Event> options
= new FirebaseRecyclerOptions.Builder<Event>()
.setQuery(databaseReference, Event.class)
.build();
eventAdapter = new EventAdapter(options, new EventAdapter.EventCallback() {
@Override
public void onCardViewClick(Event event) {
// view event in full?
}
});
if (eventReference == null) {
addNewEvent.setVisibility(View.VISIBLE);
noEventPlaceholder.setText("Nothing planned for today.. Let's go walkies!");
} else {
eventRecycler.setVisibility(View.VISIBLE);
}
eventRecycler.setAdapter(eventAdapter);
getEventData();
dog = new Dog();
calendarView
.setOnDateChangeListener(
new CalendarView
.OnDateChangeListener() {
@Override
public void onSelectedDayChange(
@NonNull CalendarView view,
int year,
int month,
int dayOfMonth)
{
String date
= dayOfMonth + "-"
+ (month + 1) + "-" + year;
scheduleTitle.setText(date);
}
});
// this is an example of what i am trying to do..
if (String.valueOf(dateRef).equals(scheduleTitle)) {
eventRecycler.setVisibility(View.VISIBLE);
noEventPlaceholder.setText("Nothing planned for today.. Let's go walkies!");
}
// ---------------------------------------------
addNewEvent.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
databaseReference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String name = dataSnapshot.child("name").getValue(String.class);
Intent intentEventForm = new Intent(getContext(), EventForm.class);
intentEventForm.putExtra("name", name);
startActivity(intentEventForm);
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.w("TAG", "onCancelled", databaseError.toException());
}
});
}
});
return view;
}
public void getEventData() {
eventReference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String eventName = dataSnapshot.child("name").getValue(String.class);
String eventDate = dataSnapshot.child("date").getValue(String.class);
String eventTime = dataSnapshot.child("time").getValue(String.class);
String eventDescription = dataSnapshot.child("description").getValue(String.class);
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.w("TAG", "onCancelled", databaseError.toException());
}
});
}