我的应用程序中有一个 FloatingSearchView
,用于对我的 Firestore 数据库执行一些查询。当我检查每个查询的大小时,结果符合预期,但我的 View 没有随结果更新。我不明白这是查询还是我处理不同适配器的方式。
对于每个查询,我都有一个 FirestoreRecyclerAdapter
。我不明白怎么了。感谢您的帮助!
floatingSearchView.setOnSearchListener(new
FloatingSearchView.OnSearchListener() {
@Override
public void onSuggestionClicked(SearchSuggestion
searchSuggestion) {
mLastQuery = searchSuggestion.getBody();
com.google.firebase.firestore.Query qSuggestion =
db
.collection("article")
.whereEqualTo("category", category_key)
.whereEqualTo("type", mLastQuery);
qSuggestion
.get()
.addOnSuccessListener(new
OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot
documentSnapshots) {
int size = documentSnapshots
.getDocuments()
.size();
Toast.makeText(Blog.this, "size " + size,
Toast.LENGTH_LONG).show();
}
});
FirestoreRecyclerOptions<Blog_model> opt = new FirestoreRecyclerOptions.Builder<Blog_model>()
.setQuery(qSuggestion, Blog_model.class)
.build();
Log.d("option", opt.getSnapshots().toString());
suggestionAdapter = new FirestoreRecyclerAdapter<Blog_model, Blog.BlogViewHolder>(opt) {
@Override
public void onBindViewHolder(@NonNull Blog.BlogViewHolder holder, int position, @NonNull final Blog_model model) {
holder.setTitle(model.getTitle());
holder.setDesc(model.getDesc());
holder.setImage(getApplicationContext(), model.getPicture());
final String post_key = getSnapshots().getSnapshot(position).getId();
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Ordinary Intent for launching a new activity
final Intent intent = new Intent(Blog.this, BlogDetails.class);
intent.putExtra("article_id", post_key);
intent.putExtra("category_key", category_key);
intent.putExtra("image", model.getPicture());
intent.putExtra("title", model.getTitle());
startActivity(intent);
}
});
}
@Override
public Blog.BlogViewHolder onCreateViewHolder(ViewGroup group, int i) {
// Create a new instance of the ViewHolder, in this case we are using a custom
// layout called R.layout.message for each item
View view = LayoutInflater.from(group.getContext())
.inflate(R.layout.blog_row, group, false);
return new Blog.BlogViewHolder(view);
}
};
floatingSearchView.clearSearchFocus();
mBlogList.setAdapter(suggestionAdapter);
}
@Override
public void onSearchAction(String currentQuery) {
mLastQuery = currentQuery;
// query to firebase
com.google.firebase.firestore.Query qSuggestion =
db
.collection("article")
.whereEqualTo("keyword."+mLastQuery, true);
FirestoreRecyclerOptions<Blog_model> options1 = new FirestoreRecyclerOptions.Builder<Blog_model>()
.setQuery(qSuggestion, Blog_model.class)
.build();
Log.d("option", options1.getSnapshots().toString());
searchAdapter = new FirestoreRecyclerAdapter<Blog_model, Blog.BlogViewHolder>(options1) {
@Override
public void onBindViewHolder(@NonNull Blog.BlogViewHolder holder, int position, @NonNull final Blog_model model) {
holder.setTitle(model.getTitle());
holder.setDesc(model.getDesc());
holder.setImage(getApplicationContext(), model.getPicture());
final String post_key = getSnapshots().getSnapshot(position).getId();
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Toast.makeText(Blog.this, "title", Toast.LENGTH_LONG).show();
// Ordinary Intent for launching a new activity
final Intent intent = new Intent(Blog.this, BlogDetails.class);
intent.putExtra("article_id", post_key);
intent.putExtra("category_key", category_key);
intent.putExtra("image", model.getPicture());
intent.putExtra("title", model.getTitle());
startActivity(intent);
}
});
}
@Override
public Blog.BlogViewHolder onCreateViewHolder(ViewGroup group, int i) {
// Create a new instance of the ViewHolder, in this case we are using a custom
// layout called R.layout.message for each item
View view = LayoutInflater.from(group.getContext())
.inflate(R.layout.blog_row, group, false);
return new Blog.BlogViewHolder(view);
}
};
mBlogList.setAdapter(searchAdapter);
}
});
@Override
public void onStart() {
super.onStart();
adapter.startListening();
if(suggestionAdapter != null){
suggestionAdapter.startListening();
}
if(searchAdapter != null){
searchAdapter.startListening();
}
}
@Override
public void onStop() {
super.onStop();
adapter.stopListening();
if(suggestionAdapter != null){
suggestionAdapter.stopListening();
}
if(searchAdapter != null){
searchAdapter.stopListening();
}
}
最佳答案
您正在使用两个 FirestoreRecyclerAdapter
对象,这是正确的,但您代码中的问题是您没有在正确的位置监听第二个适配器的变化。要解决这个问题,请在 onSearchAction
方法中添加:
searchAdapter.startListening();
在您创建适配器对象之后。这意味着对于您在 FloatingSearchView
中键入的每个字符,您都会创建一个新的适配器并使用来自数据库的结果填充它。如果您在 onStart
方法中开始收听,它对您根本没有帮助。
关于java - FirestoreRecyclerAdapter 在新的 firestore 查询后未更新,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49584886/