如何以滑动刷新布局检索特定用户
问题描述 投票：0回答：1
我正在创建一个婚姻应用程序，并使用firebase作为数据库，其中第一个片段是搜索配置文件。在搜索配置文件中，它显示了数据库中的所有配置文件，可能是男性还是女性，但我想显示女性用户的男性配置文件，反之亦然。反之亦然。并且每个用户都是经过身份验证的用户。我尝试了不同的查询，但没有成功。请帮助解决问题。
这些是firebase中的用户：
这些是每个用户中的字段：
下面是搜索配置文件的代码：
public class Search_fragment extends Fragment {
private SwipeRefreshLayout mSwipeRefreshLayout;
DatabaseReference databaseReference;
Firebase firebase;
// List<User> list = new ArrayList<User>();
RecyclerView recyclerView;
Boolean isScrolling = false;
Context context;
FirebaseAuth mAuth;
Button filter;
FirebaseRecyclerPagingAdapter<User, UserViewHolder> adapter;
User user10=new User();
FirebaseUser firebaseUser;
public Search_fragment() {
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.search__profile, container, false);
((AppCompatActivity) getActivity()).getSupportActionBar().hide();
String authgender=user10.getGender();
filter=(Button)view.findViewById(R.id.button9);
filter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent it=new Intent(getActivity(),FilterMain.class);
startActivity(it);
}
});
mSwipeRefreshLayout =view.findViewById(R.id.swipe_refresh_layout);
recyclerView = (RecyclerView)view.findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
databaseReference = FirebaseDatabase.getInstance().getReference().child("User");
PagedList.Config config = new PagedList.Config.Builder()
.setEnablePlaceholders(false)
.setPrefetchDistance(2)
.setPageSize(1)
.build();
DatabasePagingOptions<User> options = new DatabasePagingOptions.Builder<User>()
.setLifecycleOwner(this)
.setQuery(databaseReference, config, User.class)
.build();
adapter = new FirebaseRecyclerPagingAdapter<User, UserViewHolder>(options) {
@NonNull
@Override
public UserViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
return new UserViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler, parent, false),context) {
};
}
@Override
protected void onBindViewHolder(@NonNull final UserViewHolder viewHolder, final int i, @NonNull final User user) {
viewHolder.setItem(user, i);
int newPosition = viewHolder.getAdapterPosition();
}
@Override
protected void onLoadingStateChanged(@NonNull LoadingState state) {
switch (state) {
case LOADING_INITIAL:
case LOADING_MORE:
// Do your loading animation
mSwipeRefreshLayout.setRefreshing(true);
break;
case LOADED:
// Stop Animation
mSwipeRefreshLayout.setRefreshing(false);
break;
case FINISHED:
//Reached end of Data set
mSwipeRefreshLayout.setRefreshing(false);
break;
case ERROR:
retry();
break;
}
}
@Override
protected void onError(@NonNull DatabaseError databaseError) {
super.onError(databaseError);
mSwipeRefreshLayout.setRefreshing(false);
databaseError.toException().printStackTrace();
// Handle Error
retry();
}
};
recyclerView.setAdapter(adapter);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
adapter.refresh();
}
});
return view;
}
}
下面是UserViewHolder的代码：
class UserViewHolder extends RecyclerView.ViewHolder {
DatabaseReference databaseReference;
Firebase firebase;
FirebaseAuth mAuth;
List<User> MainImageUploadInfoList;
ImageView imageView,invite;
CircleImageView shortlist;
public TextView FirstNameTextView;
public TextView DateTextView;
public TextView HeightTextView;
public TextView EducationTextView;
public TextView OccupationTextView;
public TextView UserIDTextView;
public Button send_invitation,shortlist_profile;
public TextView income;
public TextView city_state;
public TextView hobbies;
public TextView marital_status;
public TextView family_members;
public TextView mothers_name;
public TextView fathers_name;
public TextView fathers_occupation;
public TextView mothers_occupation;
public TextView gendertv;
public CardView mCardView;
String sluidgl,sluidtemp;
public List<User> mUploads;
int flag=0;
HashSet<String> set=new HashSet<String>();
User user=new User();
private final Context context;
// private Object Context;
public UserViewHolder(@NonNull final View itemView, final Context context) {
super(itemView);
this.context=context;
itemView.setTag(user.getUser_id());
mCardView = (CardView) itemView.findViewById(R.id.cardview1);
FirstNameTextView = (TextView) itemView.findViewById(R.id.textView1);
DateTextView = (TextView) itemView.findViewById(R.id.textView3);
HeightTextView = (TextView) itemView.findViewById(R.id.textView4);
EducationTextView = (TextView) itemView.findViewById(R.id.textView5);
OccupationTextView = (TextView) itemView.findViewById(R.id.textView6);
UserIDTextView = (TextView) itemView.findViewById(R.id.textView7);
income = (TextView) itemView.findViewById(R.id.income);
city_state = (TextView) itemView.findViewById(R.id.city_state);
hobbies = (TextView) itemView.findViewById(R.id.hobbies);
marital_status = (TextView) itemView.findViewById(R.id.marital_status);
family_members = (TextView) itemView.findViewById(R.id.family_members);
mothers_name = (TextView) itemView.findViewById(R.id.mothers_name);
fathers_name = (TextView) itemView.findViewById(R.id.fathers_name);
fathers_occupation = (TextView) itemView.findViewById(R.id.fathers_occupation);
mothers_occupation = (TextView) itemView.findViewById(R.id.mothers_occupation);
gendertv = (TextView) itemView.findViewById(R.id.gender);
imageView=(ImageView)itemView.findViewById(R.id.imageView2);
shortlist=(CircleImageView)itemView.findViewById(R.id.shortlisted);
invite=(ImageView)itemView.findViewById(R.id.invite);
mCardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int i = (int) itemView.getTag();
for(i=0;i<=0;i++){
final Intent it = new Intent(v.getContext(), ViewProfile.class);
it.putExtra("first_name", FirstNameTextView.getText().toString());
it.putExtra("date", DateTextView.getText().toString());
it.putExtra("height", HeightTextView.getText().toString());
it.putExtra("city_state", city_state.getText().toString());
it.putExtra("hobbies", hobbies.getText().toString());
it.putExtra("highest_education", EducationTextView.getText().toString());
it.putExtra("occupation", OccupationTextView.getText().toString());
it.putExtra("income", income.getText().toString());
it.putExtra("marital_status", marital_status.getText().toString());
it.putExtra("family_members", family_members.getText().toString());
it.putExtra("fathers_name", fathers_name.getText().toString());
it.putExtra("mothers_name", mothers_name.getText().toString());
it.putExtra("fathers_occupation", fathers_occupation.getText().toString());
it.putExtra("mothers_occupation", mothers_occupation.getText().toString());
it.putExtra("user_id", UserIDTextView.getText().toString());
imageView.buildDrawingCache();
Bitmap bitmap = imageView.getDrawingCache();
it.putExtra("profile_image",bitmap);
it.putExtra("positionGroup", i);
itemView.getContext().startActivity(it);
}
}
});
}
public void setItem(final User user, final int i){
mCardView.setTag(i);
FirstNameTextView.setText(user.getFirst_name() + " " + user.getLast_name());
DateTextView.setText(user.getDate());
HeightTextView.setText(user.getHeight());
EducationTextView.setText(user.getHighest_education());
OccupationTextView.setText(user.getOccupation());
UserIDTextView.setText(user.getUser_id());
income.setText(user.getIncome());
city_state.setText(user.getCity_state());
hobbies.setText(user.getHobbies());
marital_status.setText(user.getMarital_status());
family_members.setText(user.getFamily_members());
mothers_name.setText(user.getMothers_name());
fathers_name.setText(user.getFathers_name());
fathers_occupation.setText(user.getFathers_occupation());
mothers_occupation.setText(user.getMothers_occupation());
gendertv.setText(user.getGender());
Picasso.get().load(user.getMainImage()).placeholder(R.mipmap.ic_launcher).fit().into(imageView);
}
}
编辑：
W/PersistentConnection: pc_0 - Using an unspecified index. Your data will be downloaded and filtered on the client. Consider adding '".indexOn": "gender"' at User/User to your security and Firebase Database rules for better performance
W/System.err: com.google.firebase.database.DatabaseException: Firebase Database error: Data not found at given child path!
at com.google.firebase.database.DatabaseError.toException(com.google.firebase:firebase-database@@19.2.1:229)
W/System.err: at accentra.in.Search_fragment$2.onError(Search_fragment.java:142)
at com.shreyaspatil.firebase.recyclerpagination.FirebaseRecyclerPagingAdapter$4.onChanged(FirebaseRecyclerPagingAdapter.java:76)
W/System.err: at com.shreyaspatil.firebase.recyclerpagination.FirebaseRecyclerPagingAdapter$4.onChanged(FirebaseRecyclerPagingAdapter.java:73)
at androidx.lifecycle.LiveData.considerNotify(LiveData.java:131)
at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:149)
W/System.err: at androidx.lifecycle.LiveData.setValue(LiveData.java:307)
at androidx.lifecycle.MutableLiveData.setValue(MutableLiveData.java:50)
W/System.err: at androidx.lifecycle.Transformations$2$1.onChanged(Transformations.java:155)
at androidx.lifecycle.MediatorLiveData$Source.onChanged(MediatorLiveData.java:152)
at androidx.lifecycle.LiveData.considerNotify(LiveData.java:131)
W/System.err: at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:149)
at androidx.lifecycle.LiveData.setValue(LiveData.java:307)
W/System.err: at androidx.lifecycle.MutableLiveData.setValue(MutableLiveData.java:50)
at androidx.lifecycle.LiveData$1.run(LiveData.java:91)
at android.os.Handler.handleCallback(Handler.java:794)
W/System.err: at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:6662)
at java.lang.reflect.Method.invoke(Native Method)
W/System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
W/FirebaseDataSource: retry() not valid when in state: LOADING_INITIAL
1个回答
0
投票
投票
您可以在Firebase查询中过滤出不同性别的用户。
根据您的数据，您可以应用以下查询：
FirebaseDatabase.getInstance().getReference().child("User").orderByChild("gender").equalTo("REQUIRED_GENDER_HERE");
将此数据传递到您的视图，它应该可以工作。在您的情况下，由于您是在回收站视图上使用Firebase包装器，因此在代码中更新查询就足够了。
为了警告您的数据库中不存在有关性别的索引警告，您需要在Firebase规则中指定索引。在这里查看规则文档：https://firebase.google.com/docs/database/security/indexing-data
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