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With the code below I recover data from a post, ok,
with FirebaseRecyclerAdapter I retrieve the comments that are on recyclerview, okay,
but the comment appears in all posts, what I want, is to recover the comments only for the commented post.
Then I send one child with the post id along with the comment, ok, I tried to use orderByChild and equalTo, but without success.
I read the documentation and I couldn’t solve it :)
public class BlogSingleActivity extends AppCompatActivity {
private String mPost_key = null;
private DatabaseReference mDatabase;
private ImageView mBlogSingleImage;
private TextView mBlogSingleTitle;
private TextView mBlogSingleDesc;
private TextView mBlogSingleCont;
private Button mSingleRemoveBtn;
private FirebaseAuth mAuth;
private TextView mSingleBlogComent;
private Button mSingleComentBtn;
private ProgressDialog mProgress;
private Uri mImageUri = null;
private DatabaseReference mDatabaseComent;
private RecyclerView mComentList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_blog_single);
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
mPost_key = getIntent().getExtras().getString("blog_id");
mAuth = FirebaseAuth.getInstance();
mBlogSingleDesc = (TextView) findViewById(R.id.singleBlogDesc);
mBlogSingleTitle = (TextView) findViewById(R.id.singleBlogTitle);
mBlogSingleImage = (ImageView) findViewById(R.id.singleBlogImage);
mBlogSingleCont = (TextView) findViewById(R.id.singleBlogCont);
mSingleRemoveBtn = (Button) findViewById(R.id.singleRemoveBtn);
mSingleBlogComent = (TextView) findViewById(R.id.singleBlogComent);
mSingleComentBtn = (Button) findViewById(R.id.singleComentBtn);
mProgress = new ProgressDialog(this);
mDatabaseComent = FirebaseDatabase.getInstance().getReference().child("Coment");
mComentList = (RecyclerView) findViewById(R.id.coment_list);
mComentList.setHasFixedSize(true);
mComentList.setLayoutManager(new LinearLayoutManager(this));
}
@Override
protected void onStart() {
super.onStart();
FirebaseRecyclerAdapter<Cont, BloviewHolderr> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Cont, BloviewHolderr>(
Cont.class,
R.layout.coment_row,
BloviewHolderr.class,
mDatabaseComent
) {
@Override
protected void populateViewHolder(BloviewHolderr viewHolder, Cont model, int position) {
final String post_key = getRef(position).getKey();
//viewHolder.set_nome(model.getName());
viewHolder.setComentario(model.getComentario());
}
};
mComentList.setAdapter(firebaseRecyclerAdapter);
mDatabase.child(mPost_key).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String post_title = (String) dataSnapshot.child("title").getValue();
String post_desc = (String) dataSnapshot.child("desc").getValue();
String post_image = (String) dataSnapshot.child("image").getValue();
String post_uid = (String) dataSnapshot.child("uid").getValue();
String post_cont = (String) dataSnapshot.child("cont").getValue();
mBlogSingleTitle.setText(post_title);
mBlogSingleDesc.setText(post_desc);
mBlogSingleCont.setText(post_cont);
Picasso.with(BlogSingleActivity.this).load(post_image).into(mBlogSingleImage);
if(mAuth.getCurrentUser().getUid().equals(post_uid)){
//Toast.makeText(BlogSingleActivity.this, post_uid, Toast.LENGTH_LONG).show();
//Toast.makeText(BlogSingleActivity.this, mAuth.getCurrentUser().getUid(), Toast.LENGTH_LONG).show();
mSingleRemoveBtn.setVisibility(View.VISIBLE);
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
mSingleRemoveBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
mDatabase.child(mPost_key).removeValue();
Intent mainIntent = new Intent(BlogSingleActivity.this, MainActivity.class);
startActivity(mainIntent);
}
});
mSingleComentBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startComent();
}
private void startComent() {
mProgress.setMessage("Postando");
final String coment_val = mSingleBlogComent.getText().toString().trim();
if (!TextUtils.isEmpty(coment_val)) {
mProgress.show();
final String user_id = mAuth.getCurrentUser().getUid();
final String post_key = getKey();
final DatabaseReference newComent = mDatabaseComent.push();
mDatabase.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
newComent.child("comentario").setValue(coment_val);
newComent.child("id_post").setValue(mPost_key);
//newComent.child("comentario").setValue(coment_val);
//mDatabase.child(post_key).child(user_id).child("coment").setValue(coment_val);
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProgress.dismiss();
}
}
});}
public static class BloviewHolderr extends RecyclerView.ViewHolder{
View mView;
public BloviewHolderr(View itemView) {
super(itemView);
mView = itemView;
public void setComentario (String comentario){
TextView post_coment = (TextView)mView.findViewById(R.id.comentComent);
post_coment.setText(comentario);
}
}}
RESOLVED
String currentUserId =mPost_key = getIntent().getExtras().getString("blog_id");
mDatabaseCurrentUser = FirebaseDatabase.getInstance().getReference().child("Coment");
mQueryCurrentUser = mDatabaseCurrentUser.orderByChild("id_post").equalTo(currentUserId);
}
@Override
protected void onStart() {
super.onStart();
FirebaseRecyclerAdapter<Cont, BloviewHolderr> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Cont, BloviewHolderr>(
Cont.class,
R.layout.coment_row,
BloviewHolderr.class,
mQueryCurrentUser
)