Mixing
Why I can't get some data from Firebase when I use dataSnapshot
1
I struggle to get data from Firebase for Android.
Please see my code.
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
Logger.log("onChildAdded:" + previousChildName);
// Logger.log( dataSnapshot.child("topicid").getValue(String.class));
//dataSnapshot.child("topicid").getValue();
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
}
Here is ArticleComment class
public class ArticleComment {
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
public ArticleComment(){
}
public ArticleComment(Date time, String comment,String name,String uid,int color){
this.mCommentTime = time;
this.mComment = comment;
this.mName = name;
this.mUID = uid;
this.mColorRed=color[0];
this.mColorGreen=color[1];
this.mColorBlue=color[2];
}
public Date getTime(){
return mCommentTime;
}
public void setTime(Date time){
mCommentTime =time;
}
public String getComment(){
return mComment;
}
public void setComment(String comment){
mComment =comment;
}
public String getName(){
return mName;
}
public void setName(String name){
mName=name;
}
public String getUID(){
return mUID;
}
public void setUID(String uid){
mUID=uid;
}
public int getColorRed(){
return mColorRed;
}
public int getColorGreen(){
return mColorGreen;
}
public int getColorBlue(){
return mColorBlue;
}
public void setColor(int red,int green, int blue)
{
mColorRed=red;
mColorGreen=green;
mColorBlue=blue;
}
@Exclude
public Map<String, Object> toMap(){
HashMap<String, Object> hashmap = new HashMap<>();
hashmap.put("time", mCommentTime);
hashmap.put("UID", mUID);
hashmap.put("name", mName);
hashmap.put("comment", mComment);
hashmap.put("colorRed", mColorRed);
hashmap.put("colorBlue", mColorBlue);
hashmap.put("colorGreen", mColorGreen);
return hashmap;
}
}
And here is my DB information.
I could get only
mCommentTime;
mComment;
mName;
But I can't get
mUID;
mColorRed;
mColorGreen;
mColorBlue;
Is there something wrong with my code?
Actually datasnapshot has data but it didn't copy to mComment
Hi! Thank you, friends, gave me feedback here is all code.
public class CommentsActivity extends AppCompatActivity {
private DatabaseReference myRef;
private DatabaseReference mTopicRef;
private RecyclerView mRecyclerView;
private RecyclerArticleAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private List<ArticleComment> myDataset = new ArrayList<ArticleComment>();
private ArticleComment mComment;
private Topic mTopic;
private EditText mTitleEditText;
private String mUserName;
private String mUid;
private int mRedColor=100;
private int mBlueColor=100;
private int mGreenolor=100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comments);
//Add action button
Intent intent =getIntent();
String id = intent.getStringExtra("ID");
String date = intent.getStringExtra("Date");
String title = intent.getStringExtra("Title");
String topic = intent.getStringExtra("Topic");
mUserName = intent.getStringExtra("UserName");
mUid = intent.getStringExtra("UID");
SharedPreferences pref=PreferenceManager.getDefaultSharedPreferences(this);
mRedColor= pref.getInt("ColorRed",255);
mGreenolor=pref.getInt("ColorGreen",255);
mBlueColor=pref.getInt("ColorBlue",255);
mRecyclerView = findViewById(R.id.recyclerView_article);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
//Reference DB
FirebaseDatabase database = FirebaseDatabase.getInstance();
myRef = database.getReference("Main").child("Comments").child(id);
mTopicRef = database.getReference("Main").child("Topics").child(id);
List<String> topicinfo=new ArrayList<String >();
topicinfo.add(date);
topicinfo.add(title);
topicinfo.add(topic);
// Set TestAdapter as the adapter for RecyclerView.
mRecyclerView.setAdapter(mAdapter);
mAdapter = new RecyclerArticleAdapter(myDataset,topicinfo){
/* @Override
protected void onCheckedChangedRecycle(CompoundButton comButton, final boolean isChecked){
mTopicRef.runTransaction(new Transaction.Handler() {
@Override
public Transaction.Result doTransaction(MutableData mutableData) {
Topic t = mutableData.getValue(Topic.class);
String id = mutableData.child("topicid").getValue(String.class);
t.setTopicID(id);
if (t == null) {
return Transaction.success(mutableData);
}
if (isChecked==true) {
// Unstar the post and remove self from stars
t.setRate(t.getRate()+1);
} else {
// Star the post and add self to stars
t.setRate(t.getRate()-1);
}
// Set value and report transaction success
mutableData.setValue(t);
return Transaction.success(mutableData);
}
@Override
public void onComplete(DatabaseError databaseError, boolean b,
DataSnapshot dataSnapshot) {
// Transaction completed
}
});
} */
};
mRecyclerView.setAdapter(mAdapter);
findViewById(R.id.button2).setOnClickListener(button1ClickListener);
mTitleEditText = findViewById(R.id.editText2);
ChildEventListener childEventListener = new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
Logger.log("onChildAdded:addItem" + previousChildName);
mAdapter.addItem(mAdapter.getItemCount()-1, mComment);
Logger.log("onChildAdded:scrollToPosition" + previousChildName);
mAdapter.updateItem(mAdapter.getItemCount()-1,mComment);
mLayoutManager.scrollToPosition(mAdapter.getItemCount()-1);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
};
myRef.addChildEventListener(childEventListener);
}
View.OnClickListener button1ClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// finish();
Logger.log("onClick");
if(mTitleEditText.getText().toString().equals("")){
return;
}
//setting color
int color=new int[3];
color[0]= mRedColor;
color[1]=mGreenolor;
color[2]=mBlueColor;
mComment = new ArticleComment(new Date(),mTitleEditText.getText().toString(),mUserName,mUid,color);
sendTopic(mComment,myRef);
//Delete all text
mTitleEditText.setText("");
}
};
// Sending topic to DB
public void sendTopic(ArticleComment test,DatabaseReference ref) {
String key = ref.push().getKey();
Map<String, Object> map = new HashMap<>();
map.put(key, test.toMap());
ref.updateChildren(map);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
finish();
return true;
}
return true;
}
Is it enough information?
java
android firebase firebase-realtime-database asked Jan 2 at 4:55
tarou yamadtarou yamad
84
add a comment |
1
I struggle to get data from Firebase for Android.
Please see my code.
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
Logger.log("onChildAdded:" + previousChildName);
// Logger.log( dataSnapshot.child("topicid").getValue(String.class));
//dataSnapshot.child("topicid").getValue();
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
}
Here is ArticleComment class
public class ArticleComment {
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
public ArticleComment(){
}
public ArticleComment(Date time, String comment,String name,String uid,int color){
this.mCommentTime = time;
this.mComment = comment;
this.mName = name;
this.mUID = uid;
this.mColorRed=color[0];
this.mColorGreen=color[1];
this.mColorBlue=color[2];
}
public Date getTime(){
return mCommentTime;
}
public void setTime(Date time){
mCommentTime =time;
}
public String getComment(){
return mComment;
}
public void setComment(String comment){
mComment =comment;
}
public String getName(){
return mName;
}
public void setName(String name){
mName=name;
}
public String getUID(){
return mUID;
}
public void setUID(String uid){
mUID=uid;
}
public int getColorRed(){
return mColorRed;
}
public int getColorGreen(){
return mColorGreen;
}
public int getColorBlue(){
return mColorBlue;
}
public void setColor(int red,int green, int blue)
{
mColorRed=red;
mColorGreen=green;
mColorBlue=blue;
}
@Exclude
public Map<String, Object> toMap(){
HashMap<String, Object> hashmap = new HashMap<>();
hashmap.put("time", mCommentTime);
hashmap.put("UID", mUID);
hashmap.put("name", mName);
hashmap.put("comment", mComment);
hashmap.put("colorRed", mColorRed);
hashmap.put("colorBlue", mColorBlue);
hashmap.put("colorGreen", mColorGreen);
return hashmap;
}
}
And here is my DB information.
I could get only
mCommentTime;
mComment;
mName;
But I can't get
mUID;
mColorRed;
mColorGreen;
mColorBlue;
Is there something wrong with my code?
Actually datasnapshot has data but it didn't copy to mComment
Hi! Thank you, friends, gave me feedback here is all code.
public class CommentsActivity extends AppCompatActivity {
private DatabaseReference myRef;
private DatabaseReference mTopicRef;
private RecyclerView mRecyclerView;
private RecyclerArticleAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private List<ArticleComment> myDataset = new ArrayList<ArticleComment>();
private ArticleComment mComment;
private Topic mTopic;
private EditText mTitleEditText;
private String mUserName;
private String mUid;
private int mRedColor=100;
private int mBlueColor=100;
private int mGreenolor=100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comments);
//Add action button
Intent intent =getIntent();
String id = intent.getStringExtra("ID");
String date = intent.getStringExtra("Date");
String title = intent.getStringExtra("Title");
String topic = intent.getStringExtra("Topic");
mUserName = intent.getStringExtra("UserName");
mUid = intent.getStringExtra("UID");
SharedPreferences pref=PreferenceManager.getDefaultSharedPreferences(this);
mRedColor= pref.getInt("ColorRed",255);
mGreenolor=pref.getInt("ColorGreen",255);
mBlueColor=pref.getInt("ColorBlue",255);
mRecyclerView = findViewById(R.id.recyclerView_article);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
//Reference DB
FirebaseDatabase database = FirebaseDatabase.getInstance();
myRef = database.getReference("Main").child("Comments").child(id);
mTopicRef = database.getReference("Main").child("Topics").child(id);
List<String> topicinfo=new ArrayList<String >();
topicinfo.add(date);
topicinfo.add(title);
topicinfo.add(topic);
// Set TestAdapter as the adapter for RecyclerView.
mRecyclerView.setAdapter(mAdapter);
mAdapter = new RecyclerArticleAdapter(myDataset,topicinfo){
/* @Override
protected void onCheckedChangedRecycle(CompoundButton comButton, final boolean isChecked){
mTopicRef.runTransaction(new Transaction.Handler() {
@Override
public Transaction.Result doTransaction(MutableData mutableData) {
Topic t = mutableData.getValue(Topic.class);
String id = mutableData.child("topicid").getValue(String.class);
t.setTopicID(id);
if (t == null) {
return Transaction.success(mutableData);
}
if (isChecked==true) {
// Unstar the post and remove self from stars
t.setRate(t.getRate()+1);
} else {
// Star the post and add self to stars
t.setRate(t.getRate()-1);
}
// Set value and report transaction success
mutableData.setValue(t);
return Transaction.success(mutableData);
}
@Override
public void onComplete(DatabaseError databaseError, boolean b,
DataSnapshot dataSnapshot) {
// Transaction completed
}
});
} */
};
mRecyclerView.setAdapter(mAdapter);
findViewById(R.id.button2).setOnClickListener(button1ClickListener);
mTitleEditText = findViewById(R.id.editText2);
ChildEventListener childEventListener = new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
Logger.log("onChildAdded:addItem" + previousChildName);
mAdapter.addItem(mAdapter.getItemCount()-1, mComment);
Logger.log("onChildAdded:scrollToPosition" + previousChildName);
mAdapter.updateItem(mAdapter.getItemCount()-1,mComment);
mLayoutManager.scrollToPosition(mAdapter.getItemCount()-1);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
};
myRef.addChildEventListener(childEventListener);
}
View.OnClickListener button1ClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// finish();
Logger.log("onClick");
if(mTitleEditText.getText().toString().equals("")){
return;
}
//setting color
int color=new int[3];
color[0]= mRedColor;
color[1]=mGreenolor;
color[2]=mBlueColor;
mComment = new ArticleComment(new Date(),mTitleEditText.getText().toString(),mUserName,mUid,color);
sendTopic(mComment,myRef);
//Delete all text
mTitleEditText.setText("");
}
};
// Sending topic to DB
public void sendTopic(ArticleComment test,DatabaseReference ref) {
String key = ref.push().getKey();
Map<String, Object> map = new HashMap<>();
map.put(key, test.toMap());
ref.updateChildren(map);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
finish();
return true;
}
return true;
}
Is it enough information?
java
android firebase firebase-realtime-database asked Jan 2 at 4:55
tarou yamadtarou yamad
84
can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46
add a comment |
1
1
1
1
I struggle to get data from Firebase for Android.
Please see my code.
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
Logger.log("onChildAdded:" + previousChildName);
// Logger.log( dataSnapshot.child("topicid").getValue(String.class));
//dataSnapshot.child("topicid").getValue();
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
}
Here is ArticleComment class
public class ArticleComment {
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
public ArticleComment(){
}
public ArticleComment(Date time, String comment,String name,String uid,int color){
this.mCommentTime = time;
this.mComment = comment;
this.mName = name;
this.mUID = uid;
this.mColorRed=color[0];
this.mColorGreen=color[1];
this.mColorBlue=color[2];
}
public Date getTime(){
return mCommentTime;
}
public void setTime(Date time){
mCommentTime =time;
}
public String getComment(){
return mComment;
}
public void setComment(String comment){
mComment =comment;
}
public String getName(){
return mName;
}
public void setName(String name){
mName=name;
}
public String getUID(){
return mUID;
}
public void setUID(String uid){
mUID=uid;
}
public int getColorRed(){
return mColorRed;
}
public int getColorGreen(){
return mColorGreen;
}
public int getColorBlue(){
return mColorBlue;
}
public void setColor(int red,int green, int blue)
{
mColorRed=red;
mColorGreen=green;
mColorBlue=blue;
}
@Exclude
public Map<String, Object> toMap(){
HashMap<String, Object> hashmap = new HashMap<>();
hashmap.put("time", mCommentTime);
hashmap.put("UID", mUID);
hashmap.put("name", mName);
hashmap.put("comment", mComment);
hashmap.put("colorRed", mColorRed);
hashmap.put("colorBlue", mColorBlue);
hashmap.put("colorGreen", mColorGreen);
return hashmap;
}
}
And here is my DB information.
I could get only
mCommentTime;
mComment;
mName;
But I can't get
mUID;
mColorRed;
mColorGreen;
mColorBlue;
Is there something wrong with my code?
Actually datasnapshot has data but it didn't copy to mComment
Hi! Thank you, friends, gave me feedback here is all code.
public class CommentsActivity extends AppCompatActivity {
private DatabaseReference myRef;
private DatabaseReference mTopicRef;
private RecyclerView mRecyclerView;
private RecyclerArticleAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private List<ArticleComment> myDataset = new ArrayList<ArticleComment>();
private ArticleComment mComment;
private Topic mTopic;
private EditText mTitleEditText;
private String mUserName;
private String mUid;
private int mRedColor=100;
private int mBlueColor=100;
private int mGreenolor=100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comments);
//Add action button
Intent intent =getIntent();
String id = intent.getStringExtra("ID");
String date = intent.getStringExtra("Date");
String title = intent.getStringExtra("Title");
String topic = intent.getStringExtra("Topic");
mUserName = intent.getStringExtra("UserName");
mUid = intent.getStringExtra("UID");
SharedPreferences pref=PreferenceManager.getDefaultSharedPreferences(this);
mRedColor= pref.getInt("ColorRed",255);
mGreenolor=pref.getInt("ColorGreen",255);
mBlueColor=pref.getInt("ColorBlue",255);
mRecyclerView = findViewById(R.id.recyclerView_article);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
//Reference DB
FirebaseDatabase database = FirebaseDatabase.getInstance();
myRef = database.getReference("Main").child("Comments").child(id);
mTopicRef = database.getReference("Main").child("Topics").child(id);
List<String> topicinfo=new ArrayList<String >();
topicinfo.add(date);
topicinfo.add(title);
topicinfo.add(topic);
// Set TestAdapter as the adapter for RecyclerView.
mRecyclerView.setAdapter(mAdapter);
mAdapter = new RecyclerArticleAdapter(myDataset,topicinfo){
/* @Override
protected void onCheckedChangedRecycle(CompoundButton comButton, final boolean isChecked){
mTopicRef.runTransaction(new Transaction.Handler() {
@Override
public Transaction.Result doTransaction(MutableData mutableData) {
Topic t = mutableData.getValue(Topic.class);
String id = mutableData.child("topicid").getValue(String.class);
t.setTopicID(id);
if (t == null) {
return Transaction.success(mutableData);
}
if (isChecked==true) {
// Unstar the post and remove self from stars
t.setRate(t.getRate()+1);
} else {
// Star the post and add self to stars
t.setRate(t.getRate()-1);
}
// Set value and report transaction success
mutableData.setValue(t);
return Transaction.success(mutableData);
}
@Override
public void onComplete(DatabaseError databaseError, boolean b,
DataSnapshot dataSnapshot) {
// Transaction completed
}
});
} */
};
mRecyclerView.setAdapter(mAdapter);
findViewById(R.id.button2).setOnClickListener(button1ClickListener);
mTitleEditText = findViewById(R.id.editText2);
ChildEventListener childEventListener = new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
Logger.log("onChildAdded:addItem" + previousChildName);
mAdapter.addItem(mAdapter.getItemCount()-1, mComment);
Logger.log("onChildAdded:scrollToPosition" + previousChildName);
mAdapter.updateItem(mAdapter.getItemCount()-1,mComment);
mLayoutManager.scrollToPosition(mAdapter.getItemCount()-1);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
};
myRef.addChildEventListener(childEventListener);
}
View.OnClickListener button1ClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// finish();
Logger.log("onClick");
if(mTitleEditText.getText().toString().equals("")){
return;
}
//setting color
int color=new int[3];
color[0]= mRedColor;
color[1]=mGreenolor;
color[2]=mBlueColor;
mComment = new ArticleComment(new Date(),mTitleEditText.getText().toString(),mUserName,mUid,color);
sendTopic(mComment,myRef);
//Delete all text
mTitleEditText.setText("");
}
};
// Sending topic to DB
public void sendTopic(ArticleComment test,DatabaseReference ref) {
String key = ref.push().getKey();
Map<String, Object> map = new HashMap<>();
map.put(key, test.toMap());
ref.updateChildren(map);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
finish();
return true;
}
return true;
}
Is it enough information?
java
android firebase firebase-realtime-database asked Jan 2 at 4:55
tarou yamadtarou yamad
84
I struggle to get data from Firebase for Android.
Please see my code.
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
Logger.log("onChildAdded:" + previousChildName);
// Logger.log( dataSnapshot.child("topicid").getValue(String.class));
//dataSnapshot.child("topicid").getValue();
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
}
Here is ArticleComment class
public class ArticleComment {
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
public ArticleComment(){
}
public ArticleComment(Date time, String comment,String name,String uid,int color){
this.mCommentTime = time;
this.mComment = comment;
this.mName = name;
this.mUID = uid;
this.mColorRed=color[0];
this.mColorGreen=color[1];
this.mColorBlue=color[2];
}
public Date getTime(){
return mCommentTime;
}
public void setTime(Date time){
mCommentTime =time;
}
public String getComment(){
return mComment;
}
public void setComment(String comment){
mComment =comment;
}
public String getName(){
return mName;
}
public void setName(String name){
mName=name;
}
public String getUID(){
return mUID;
}
public void setUID(String uid){
mUID=uid;
}
public int getColorRed(){
return mColorRed;
}
public int getColorGreen(){
return mColorGreen;
}
public int getColorBlue(){
return mColorBlue;
}
public void setColor(int red,int green, int blue)
{
mColorRed=red;
mColorGreen=green;
mColorBlue=blue;
}
@Exclude
public Map<String, Object> toMap(){
HashMap<String, Object> hashmap = new HashMap<>();
hashmap.put("time", mCommentTime);
hashmap.put("UID", mUID);
hashmap.put("name", mName);
hashmap.put("comment", mComment);
hashmap.put("colorRed", mColorRed);
hashmap.put("colorBlue", mColorBlue);
hashmap.put("colorGreen", mColorGreen);
return hashmap;
}
}
And here is my DB information.
I could get only
mCommentTime;
mComment;
mName;
But I can't get
mUID;
mColorRed;
mColorGreen;
mColorBlue;
Is there something wrong with my code?
Actually datasnapshot has data but it didn't copy to mComment
Hi! Thank you, friends, gave me feedback here is all code.
public class CommentsActivity extends AppCompatActivity {
private DatabaseReference myRef;
private DatabaseReference mTopicRef;
private RecyclerView mRecyclerView;
private RecyclerArticleAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private List<ArticleComment> myDataset = new ArrayList<ArticleComment>();
private ArticleComment mComment;
private Topic mTopic;
private EditText mTitleEditText;
private String mUserName;
private String mUid;
private int mRedColor=100;
private int mBlueColor=100;
private int mGreenolor=100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comments);
//Add action button
Intent intent =getIntent();
String id = intent.getStringExtra("ID");
String date = intent.getStringExtra("Date");
String title = intent.getStringExtra("Title");
String topic = intent.getStringExtra("Topic");
mUserName = intent.getStringExtra("UserName");
mUid = intent.getStringExtra("UID");
SharedPreferences pref=PreferenceManager.getDefaultSharedPreferences(this);
mRedColor= pref.getInt("ColorRed",255);
mGreenolor=pref.getInt("ColorGreen",255);
mBlueColor=pref.getInt("ColorBlue",255);
mRecyclerView = findViewById(R.id.recyclerView_article);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
//Reference DB
FirebaseDatabase database = FirebaseDatabase.getInstance();
myRef = database.getReference("Main").child("Comments").child(id);
mTopicRef = database.getReference("Main").child("Topics").child(id);
List<String> topicinfo=new ArrayList<String >();
topicinfo.add(date);
topicinfo.add(title);
topicinfo.add(topic);
// Set TestAdapter as the adapter for RecyclerView.
mRecyclerView.setAdapter(mAdapter);
mAdapter = new RecyclerArticleAdapter(myDataset,topicinfo){
/* @Override
protected void onCheckedChangedRecycle(CompoundButton comButton, final boolean isChecked){
mTopicRef.runTransaction(new Transaction.Handler() {
@Override
public Transaction.Result doTransaction(MutableData mutableData) {
Topic t = mutableData.getValue(Topic.class);
String id = mutableData.child("topicid").getValue(String.class);
t.setTopicID(id);
if (t == null) {
return Transaction.success(mutableData);
}
if (isChecked==true) {
// Unstar the post and remove self from stars
t.setRate(t.getRate()+1);
} else {
// Star the post and add self to stars
t.setRate(t.getRate()-1);
}
// Set value and report transaction success
mutableData.setValue(t);
return Transaction.success(mutableData);
}
@Override
public void onComplete(DatabaseError databaseError, boolean b,
DataSnapshot dataSnapshot) {
// Transaction completed
}
});
} */
};
mRecyclerView.setAdapter(mAdapter);
findViewById(R.id.button2).setOnClickListener(button1ClickListener);
mTitleEditText = findViewById(R.id.editText2);
ChildEventListener childEventListener = new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
mComment = new ArticleComment();
mComment = dataSnapshot.getValue(ArticleComment.class);
Logger.log("onChildAdded:addItem" + previousChildName);
mAdapter.addItem(mAdapter.getItemCount()-1, mComment);
Logger.log("onChildAdded:scrollToPosition" + previousChildName);
mAdapter.updateItem(mAdapter.getItemCount()-1,mComment);
mLayoutManager.scrollToPosition(mAdapter.getItemCount()-1);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
};
myRef.addChildEventListener(childEventListener);
}
View.OnClickListener button1ClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// finish();
Logger.log("onClick");
if(mTitleEditText.getText().toString().equals("")){
return;
}
//setting color
int color=new int[3];
color[0]= mRedColor;
color[1]=mGreenolor;
color[2]=mBlueColor;
mComment = new ArticleComment(new Date(),mTitleEditText.getText().toString(),mUserName,mUid,color);
sendTopic(mComment,myRef);
//Delete all text
mTitleEditText.setText("");
}
};
// Sending topic to DB
public void sendTopic(ArticleComment test,DatabaseReference ref) {
String key = ref.push().getKey();
Map<String, Object> map = new HashMap<>();
map.put(key, test.toMap());
ref.updateChildren(map);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
finish();
return true;
}
return true;
}
Is it enough information?
java
android firebase firebase-realtime-database java
android firebase firebase-realtime-database asked Jan 2 at 4:55
tarou yamadtarou yamad
84
asked Jan 2 at 4:55
tarou yamadtarou yamad
84
edited Jan 2 at 13:59
tarou yamad
asked Jan 2 at 4:55
tarou yamadtarou yamad
84
asked Jan 2 at 4:55
tarou yamadtarou yamad
84
asked Jan 2 at 4:55
tarou yamadtarou yamad
84
84
can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46
add a comment |
can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46
can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46
add a comment |
2 Answers
2
active
oldest
votes
0
Firebase follows JavaBean naming conventions to determine the name of the JSON property from the Java code. And in that convention getUID and setUID map to a property uID with a lowercase u.
To make the Firebase client adopt your naming convention, annotate the getter and setter with a @PropertyName:
@PropertyName("UID")
public String getUID(){
return mUID;
}
@PropertyName("UID")
public void setUID(String uid){
mUID=uid;
}
I'm not immediately sure why the other properties don't work. When this happens, I find it most useful to write an object of the type of Firebase, to see what it generates.
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
add a comment |
0
**
If you want to store values in a model .Then your variable name should
be same as Firebase node or else you need to typeConvert it .
**
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
Replace above with
private int time;
private String comment;
private String UID;
private String name;
private int colorRed;
private int colorBlue;
private int colorGreen;
now make getters,setters,constructor etc. using above nodes. (Now you will be able to get all the values ) .
Hope its gonna help you :)
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Firebase follows JavaBean naming conventions to determine the name of the JSON property from the Java code. And in that convention getUID and setUID map to a property uID with a lowercase u.
To make the Firebase client adopt your naming convention, annotate the getter and setter with a @PropertyName:
@PropertyName("UID")
public String getUID(){
return mUID;
}
@PropertyName("UID")
public void setUID(String uid){
mUID=uid;
}
I'm not immediately sure why the other properties don't work. When this happens, I find it most useful to write an object of the type of Firebase, to see what it generates.
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
add a comment |
0
Firebase follows JavaBean naming conventions to determine the name of the JSON property from the Java code. And in that convention getUID and setUID map to a property uID with a lowercase u.
To make the Firebase client adopt your naming convention, annotate the getter and setter with a @PropertyName:
@PropertyName("UID")
public String getUID(){
return mUID;
}
@PropertyName("UID")
public void setUID(String uid){
mUID=uid;
}
I'm not immediately sure why the other properties don't work. When this happens, I find it most useful to write an object of the type of Firebase, to see what it generates.
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
add a comment |
0
0
0
Firebase follows JavaBean naming conventions to determine the name of the JSON property from the Java code. And in that convention getUID and setUID map to a property uID with a lowercase u.
To make the Firebase client adopt your naming convention, annotate the getter and setter with a @PropertyName:
@PropertyName("UID")
public String getUID(){
return mUID;
}
@PropertyName("UID")
public void setUID(String uid){
mUID=uid;
}
I'm not immediately sure why the other properties don't work. When this happens, I find it most useful to write an object of the type of Firebase, to see what it generates.
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
Firebase follows JavaBean naming conventions to determine the name of the JSON property from the Java code. And in that convention getUID and setUID map to a property uID with a lowercase u.
To make the Firebase client adopt your naming convention, annotate the getter and setter with a @PropertyName:
@PropertyName("UID")
public String getUID(){
return mUID;
}
@PropertyName("UID")
public void setUID(String uid){
mUID=uid;
}
I'm not immediately sure why the other properties don't work. When this happens, I find it most useful to write an object of the type of Firebase, to see what it generates.
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
answered Jan 2 at 15:39
Frank van PuffelenFrank van Puffelen
241k29387414
241k29387414
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
add a comment |
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day!
– tarou yamad
Jan 3 at 13:41
add a comment |
0
**
If you want to store values in a model .Then your variable name should
be same as Firebase node or else you need to typeConvert it .
**
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
Replace above with
private int time;
private String comment;
private String UID;
private String name;
private int colorRed;
private int colorBlue;
private int colorGreen;
now make getters,setters,constructor etc. using above nodes. (Now you will be able to get all the values ) .
Hope its gonna help you :)
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
add a comment |
0
**
If you want to store values in a model .Then your variable name should
be same as Firebase node or else you need to typeConvert it .
**
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
Replace above with
private int time;
private String comment;
private String UID;
private String name;
private int colorRed;
private int colorBlue;
private int colorGreen;
now make getters,setters,constructor etc. using above nodes. (Now you will be able to get all the values ) .
Hope its gonna help you :)
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
add a comment |
0
0
0
**
If you want to store values in a model .Then your variable name should
be same as Firebase node or else you need to typeConvert it .
**
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
Replace above with
private int time;
private String comment;
private String UID;
private String name;
private int colorRed;
private int colorBlue;
private int colorGreen;
now make getters,setters,constructor etc. using above nodes. (Now you will be able to get all the values ) .
Hope its gonna help you :)
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
**
If you want to store values in a model .Then your variable name should
be same as Firebase node or else you need to typeConvert it .
**
private Date mCommentTime;
private String mComment;
private String mUID;
private String mName;
private int mColorRed;
private int mColorGreen;
private int mColorBlue;
Replace above with
private int time;
private String comment;
private String UID;
private String name;
private int colorRed;
private int colorBlue;
private int colorGreen;
now make getters,setters,constructor etc. using above nodes. (Now you will be able to get all the values ) .
Hope its gonna help you :)
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
answered Jan 2 at 15:51
vinay mishravinay mishra
2113
2113
add a comment |
add a comment |
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can you show where are setting db reference?
– Zaid Mirza
Jan 2 at 5:04
Are you surely passing these values or not? Check at once carefully and print in console.
– RAHUL
Jan 2 at 5:54
please show the code where you are building the query to get data.
– Umar Hussain
Jan 2 at 6:47
Hi! Thank you, I update all code, please see it.
– tarou yamad
Jan 2 at 14:00
OMG! I can do it! You guys are so genius!! Thank you so much! I really appreciate. Have a nice day! –
– tarou yamad
Jan 3 at 13:46