hi guys how can i send a data to firebase when i logging in want to see different info from other accounts now i see the save data that i sent. this is a code:
This is my Activity_category Activity
public class Activity_category extends Activity {
class Layout{
Layout(){
textView2= (TextView)findViewById(R.id.textView2);
listview1=(RecyclerView)findViewById(R.id.listview1);
registerForContextMenu(listview1);
}
TextView textView2;
RecyclerView listview1;
}
class Events{
Events(){
firebaseDatabase = FirebaseDatabase.getInstance();
myRef = FirebaseDatabase.getInstance().getReference("User_Details");
l.listview1.setLayoutManager(new LinearLayoutManager(Activity_category.this));
Toast.makeText(Activity_category.this, "Wait ! Fetching List...", Toast.LENGTH_SHORT).show();
// l.listview1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
// #Override
// public void onItemClick(AdapterView<?> adapterView, View view, int i, long id) {
// }
// });
}
}
Layout l;
Events e;
FirebaseDatabase firebaseDatabase;
DatabaseReference myRef;
FirebaseRecyclerAdapter<showdataitems, ShowDataViewHolder> mFirebaseAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
l = new Layout(); e = new Events();
}
public Activity_category() {
// Required empty public constructor
}
#Override
public void onStart() {
super.onStart();
//Log.d("LOGGED", "IN onStart ");
mFirebaseAdapter = new FirebaseRecyclerAdapter<showdataitems, ShowDataViewHolder>(showdataitems.class, R.layout.category, ShowDataViewHolder.class, myRef) {
public void populateViewHolder(final ShowDataViewHolder viewHolder, showdataitems model, final int position) {
viewHolder.Image_URL(model.getImage_URL());
viewHolder.Image_Title(model.getImage_Title());
//OnClick Item
viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(Activity_category.this);
builder.setMessage("Do you want to Delete this data ?").setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
int selectedItems = position;
mFirebaseAdapter.getRef(selectedItems).removeValue();
mFirebaseAdapter.notifyItemRemoved(selectedItems);
l.listview1.invalidate();
onStart();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.setTitle("Confirm");
dialog.show();
}
});
}
};
l.listview1.setAdapter(mFirebaseAdapter);
}
//View Holder For Recycler View
public static class ShowDataViewHolder extends RecyclerView.ViewHolder {
private final TextView text1;
private final ImageView imageView3;
public ShowDataViewHolder(final View itemView) {
super(itemView);
imageView3 = (ImageView) itemView.findViewById(R.id.imageView3);
text1 = (TextView) itemView.findViewById(R.id.text1);
}
private void Image_Title(String title) {
text1.setText(title);
}
private void Image_URL(String title) {
// image_url.setImageResource(R.drawable.loading);
Glide.with(itemView.getContext())
.load(title)
.crossFade()
.placeholder(R.drawable.newmenu1)
.thumbnail(0.1f)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageView3);
}
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()){
case 1:
break;
}
return super.onContextItemSelected(item);
}
This is my Uploadinfo Activity
public class Uploadinfo extends Activity{
class Layout{
Layout(){
menuBtn= (Button)findViewById(R.id.menuBtn);
cancelBtn= (Button)findViewById(R.id.cancelBtn);
btnAddimage= (Button)findViewById(R.id.btnAddimage);
imageView= (ImageView)findViewById(R.id.imageView);
editText= (EditText)findViewById(R.id.editText);
}
Button menuBtn , cancelBtn,btnAddimage;
ImageView imageView;
EditText editText;
}
class Events{
Events(){
mProgressDialog = new ProgressDialog(Uploadinfo.this);
l.btnAddimage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getApplicationContext(), "Call for Permission", Toast.LENGTH_SHORT).show();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
{
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, READ_EXTERNAL_STORAGE);
}
}
else
{
callgalary();
}
}
});
mdatabaseRef = FirebaseDatabase.getInstance().getReference();
mRoofRef = new Firebase("https://restaurant-menu-4bdf2.firebaseio.com/").child("User_Details").push(); // Push will create new child every time we upload data
mStorage = FirebaseStorage.getInstance().getReferenceFromUrl("gs://restaurant-menu-4bdf2.appspot.com/");
l.menuBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final String mName = l.editText.getText().toString().trim();
if(mName.isEmpty())
{
Toast.makeText(getApplicationContext(), "Fill all Field", Toast.LENGTH_SHORT).show();
return;
}
Firebase childRef_name = mRoofRef.child("Image_Title");
childRef_name.setValue(mName);
Toast.makeText(getApplicationContext(), "Updated Info", Toast.LENGTH_SHORT).show();
}
});
}
}
Layout l;
Events e;
public static final int READ_EXTERNAL_STORAGE = 0;
private static final int GALLERY_INTENT = 2;
private ProgressDialog mProgressDialog;
private Firebase mRoofRef;
private Uri mImageUri = null;
private DatabaseReference mdatabaseRef;
private StorageReference mStorage;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
l = new Layout(); e = new Events();
}
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case READ_EXTERNAL_STORAGE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
callgalary();
return;
}
Toast.makeText(getApplicationContext(), "...", Toast.LENGTH_SHORT).show();
}
private void callgalary() {
Intent intent1 = new Intent();
intent1.setType("image/*");
intent1.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent1, "Select Picture"), GALLERY_INTENT);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_INTENT && resultCode == RESULT_OK) {
mImageUri = data.getData();
l.imageView.setImageURI(mImageUri);
StorageReference filePath = mStorage.child("User_Images").child(mImageUri.getLastPathSegment());
mProgressDialog.setMessage("Uploading Image....");
mProgressDialog.show();
filePath.putFile(mImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Uri downloadUri = taskSnapshot.getDownloadUrl(); //Ignore This error
mRoofRef.child("Image_URL").setValue(downloadUri.toString());
Glide.with(getApplicationContext())
.load(downloadUri)
.crossFade()
.placeholder(R.drawable.newmenu1)
.diskCacheStrategy(DiskCacheStrategy.RESULT)
.into( l.imageView);
Toast.makeText(getApplicationContext(), "Updated.", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
}
});
}
}
Related
This is the error i am getting i am trying to upload/update/delete information to firebase on the app. It shows and the dialog box but when I click save/view changes it crashes and does not work.
ERROR
Process: com.coffeeshopapp.ruhul08.myapplication, PID: 1131
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.coffeeshopapp.ruhul08.myapplication/com.coffeeshopapp.ruhul08.myapplication.FoodDetails}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.design.widget.FloatingActionButton.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3086)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3229)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:6981)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.design.widget.FloatingActionButton.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at com.coffeeshopapp.ruhul08.myapplication.FoodDetails.onCreate(FoodDetails.java:52)
at android.app.Activity.performCreate(Activity.java:7326)
at android.app.Activity.performCreate(Activity.java:7317)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3066)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3229)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:6981)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
I/Process: Sending signal. PID: 1131 SIG: 9
Process 1131 terminated.
CODE
public class AdminFoodList extends AppCompatActivity {
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
//RelativeLayout rootLayout;
FloatingActionButton fab;
//Firebase
FirebaseDatabase database;
DatabaseReference foodList;
FirebaseStorage storage;
StorageReference storageReference;
String categoryId="";
FirebaseRecyclerAdapter<Foods, FoodViewHolder> adapter;
DrawerLayout drawer;
private EditText editName, editDescription, editPrice, editDiscount;
private Button btnSelect;
private Button btnUpload;
Foods newFood;
Uri saveUri;
private final int PICK_IMAGE_REQUEST = 71;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin_food_list);
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
database = FirebaseDatabase.getInstance();
foodList = database.getReference("Foods");
storage = FirebaseStorage.getInstance();
storageReference = storage.getReference();
//Init
recyclerView = (RecyclerView)findViewById(R.id.recycler_food);
recyclerView.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
if (getIntent() != null){
categoryId = getIntent().getStringExtra("CategoryId");
}
if(!categoryId.isEmpty() && categoryId != null){
loadListFood(categoryId);
}
// rootLayout = (RelativeLayout)findViewById(R.id.rootLayout);
fab = (FloatingActionButton)findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showAddFoodDialog();
}
});
}
private void showAddFoodDialog() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(com.coffeeshopapp.app.myapplication.AdminFoodList.this);
alertDialog.setTitle("Add new Food");
alertDialog.setMessage("Please fill full information");
LayoutInflater inflater = this.getLayoutInflater();
View add_menu_layout = inflater.inflate(R.layout.add_new_food_layout,null);
editName = add_menu_layout.findViewById(R.id.edit_Name);
editDescription = add_menu_layout.findViewById(R.id.edit_Description);
editPrice = add_menu_layout.findViewById(R.id.edit_Price);
editDiscount = add_menu_layout.findViewById(R.id.edit_Discount);
btnSelect = add_menu_layout.findViewById(R.id.btn_select);
btnUpload = add_menu_layout.findViewById(R.id.btn_upload);
//event for button
btnSelect.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
chooseImage(); //let user choose image from gallery and then save it to url of this image
}
});
btnUpload.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
uploadImage();
}
});
alertDialog.setView(add_menu_layout);
alertDialog.setIcon(R.drawable.ic_shopping_cart);
alertDialog.setPositiveButton("Save/View Changes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
if(newFood != null)
{
foodList.push().setValue(newFood);
Snackbar.make(drawer, "New Food "+newFood.getName()+" was added", Snackbar.LENGTH_SHORT)
.show();
}
}
});
alertDialog.setNegativeButton("Back", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
alertDialog.show();
}
private void uploadImage() {
if (saveUri != null)
{
final ProgressDialog mDialog = new ProgressDialog(this);
mDialog.setMessage("Uploading..");
mDialog.show();
String imageName = UUID.randomUUID().toString();
final StorageReference imageFolder = storageReference.child("images/"+imageName);
imageFolder.putFile(saveUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>(){
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
mDialog.dismiss();
Toast.makeText(com.coffeeshopapp.app.myapplication.AdminFoodList.this, "Uploaded!!!", Toast.LENGTH_SHORT).show();
imageFolder.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
newFood = new Foods();
newFood.setName(editName.getText().toString());
newFood.setDescription(editDescription.getText().toString());
newFood.setPrice(editPrice.getText().toString());
newFood.setDiscount(editDiscount.getText().toString());
newFood.setMenuId(categoryId);
newFood.setImage(uri.toString());
}
});
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e){
mDialog.dismiss();
Toast.makeText(com.coffeeshopapp.app.myapplication.AdminFoodList.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
})
.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress = (100.0 * taskSnapshot.getBytesTransferred() / taskSnapshot.getTotalByteCount());
mDialog.setMessage("Uploaded"+progress+"%");
}
});
}
}
private void chooseImage() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data !=null && data.getData()!=null)
{
saveUri = data.getData();
btnSelect.setText("Your image is selected!");
}
}
#Override
public boolean onContextItemSelected(MenuItem item) {
if(item.getTitle().equals(Common.UPDATE))
{
showUpdateFoodDialog(adapter.getRef(item.getOrder()).getKey(),adapter.getItem(item.getOrder()));
}
else if(item.getTitle().equals(Common.Delete))
{
deleteFood(adapter.getRef(item.getOrder()).getKey());
}
return super.onContextItemSelected(item);
}
private void showUpdateFoodDialog(final String key, final Foods item) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(com.coffeeshopapp.app.myapplication.AdminFoodList.this);
alertDialog.setTitle("Edit Food");
alertDialog.setMessage("Please fill full information");
LayoutInflater inflater = this.getLayoutInflater();
View add_menu_layout = inflater.inflate(R.layout.add_new_food_layout,null);
editName = add_menu_layout.findViewById(R.id.edit_Name);
editDescription = add_menu_layout.findViewById(R.id.edit_Description);
editPrice = add_menu_layout.findViewById(R.id.edit_Price);
editDiscount = add_menu_layout.findViewById(R.id.edit_Discount);
editName.setText(item.getName());
editDescription.setText(item.getDescription());
editPrice.setText(item.getPrice());
editDiscount.setText(item.getDiscount());
btnSelect = add_menu_layout.findViewById(R.id.btn_select);
btnUpload = add_menu_layout.findViewById(R.id.btn_upload);
//event for button
btnSelect.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
chooseImage(); //let user choose image from gallery and then save it to url of this image
}
});
btnUpload.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
changeImage(item);
}
});
alertDialog.setView(add_menu_layout);
alertDialog.setIcon(R.drawable.ic_shopping_cart);
alertDialog.setPositiveButton("Save/View Changes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
//update info
item.setName(editName.getText().toString());
item.setPrice(editPrice.getText().toString());
item.setDiscount(editDiscount.getText().toString());
item.setDescription(editDescription.getText().toString());
foodList.child(key).setValue(item);
Snackbar.make(drawer, "food "+item.getName()+" was updated", Snackbar.LENGTH_SHORT)
.show();
}
});
alertDialog.setNegativeButton("Back", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
alertDialog.show();
}
private void loadListFood(String categoryId) {
adapter = new FirebaseRecyclerAdapter<Foods, FoodViewHolder>(
Foods.class,
R.layout.food_item,
FoodViewHolder.class,
foodList.orderByChild("MenuId").equalTo(categoryId))
{
#Override
protected void populateViewHolder(FoodViewHolder viewHolder, Foods model, int position) {
viewHolder.food_name.setText(model.getName());
Picasso.get().load(model.getImage()).into(viewHolder.food_image);
final Foods local = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
//code later
}
});
}
};
adapter.notifyDataSetChanged();
recyclerView.setAdapter(adapter);
}
private void changeImage(final Foods item){
if (saveUri != null)
{
final ProgressDialog mDialog = new ProgressDialog(this);
mDialog.setMessage("Uploading..");
mDialog.show();
String imageName = UUID.randomUUID().toString();
final StorageReference imageFolder = storageReference.child("images/"+imageName);
imageFolder.putFile(saveUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>(){
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
mDialog.dismiss();
Toast.makeText(com.coffeeshopapp.app.myapplication.AdminFoodList.this, "Uploaded!!!", Toast.LENGTH_SHORT).show();
imageFolder.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
item.setImage(uri.toString());
}
});
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e){
mDialog.dismiss();
Toast.makeText(com.coffeeshopapp.app.myapplication.AdminFoodList.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
})
.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
double progress = (100.0 * taskSnapshot.getBytesTransferred() / taskSnapshot.getTotalByteCount());
mDialog.setMessage("Uploaded"+progress+"%");
}
});
}
}
private void deleteFood(String key){
foodList.child(key).removeValue();
}
}
this is the code for the xml activity_admin_food_list. I am not sure about the floating action button as this is included in the code for this xml page.
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rootLayout"
tools:context=".FoodList">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_food"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
app:layout_constraintBottom_toBottomOf="parent"
tools:layout_editor_absoluteX="61dp" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:layout_marginStart="16dp"
android:layout_marginTop="712dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toEndOf="#+id/recycler_food"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/addicon" />
</android.support.design.widget.CoordinatorLayout>
fab = (FloatingActionButton)findViewById(R.id.fab);
is not being found in your XML R.layout.activity_admin_food_list, check if you have your fab button there
I face a problem when I send a comment, that comment does not appear in RecyclerView, I have to go back and reopen Activity again to see my reply.
BlogSingleActivity.java
public class BlogSingleActivity extends AppCompatActivity {
private String mPost_key = null;
DatabaseReference mDatabase;
private ImageView mBlogSingleImage;
private TextView mBlogSingleTitle;
private TextView mBlogSingleDesc;
private TextView mBlogSingleUsername, mNumbersOfComments;
private TextView mBlogSingleDate;
private DatabaseReference ReplayDatabase;
private RecyclerView mReplayBlogList;
private TextView emptyView;
FirebaseRecyclerAdapter<Blog, BlogViewHolder> mAdapter;
private EditText mReplayText;
private FirebaseAuth mAuth;
private FirebaseUser mCurrentUser;
private DatabaseReference mDatabaseUser;
private Uri mImagUri = null;
private static final int GALLERY_REQUEST = 2;
private StorageReference mStorage;
private ImageButton mselectImage;
Button sendBTN;
private ProgressDialog mProgress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_blog_single);
mPost_key = getIntent().getExtras().getString("blog_id");
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
ReplayDatabase = FirebaseDatabase.getInstance().getReference().child("Replay");
mBlogSingleDesc = findViewById(R.id.singleBlogDesc);
mBlogSingleTitle = findViewById(R.id.post_Tittle);
mBlogSingleImage = findViewById(R.id.singleBlogImage);
mBlogSingleUsername = findViewById(R.id.singleBlogUsername);
mBlogSingleDate = findViewById(R.id.singleBlogDate);
mNumbersOfComments = findViewById(R.id.numberofcomments);
assert getSupportActionBar() != null;
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mReplayBlogList = findViewById(R.id.replay_blog_list);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setReverseLayout(true);
layoutManager.setStackFromEnd(true);
mReplayBlogList.setLayoutManager(layoutManager);
mReplayBlogList.setNestedScrollingEnabled(false);
emptyView = findViewById(R.id.empty_view);
chickitem();
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();
mDatabaseUser = FirebaseDatabase.getInstance().getReference().child("Users").child(mCurrentUser.getUid());
mReplayText = findViewById(R.id.ReplayField);
mStorage = FirebaseStorage.getInstance().getReference();
mselectImage = findViewById(R.id.replayImageSelect);
sendBTN = findViewById(R.id.send_BTN);
getfirebaseData();
mProgress = new ProgressDialog(this);
mselectImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GALLERY_REQUEST);
}
});
sendBTN.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startReplay();
getfirebaseData();;
disappearKeyboard();
mReplayText.getText().clear();
mselectImage.setImageResource(R.mipmap.add_btn);
mselectImage.setBackgroundColor(getResources().getColor(R.color.image_background_color));
}
});
mDatabase.child(mPost_key).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
String post_title = (String) dataSnapshot.child("tittle").getValue();
String post_desc = (String) dataSnapshot.child("desc").getValue();
String post_image = (String) dataSnapshot.child("image").getValue();
String post_username = (String) dataSnapshot.child("username").getValue();
Object post_date = dataSnapshot.child("date").getValue();
Blog timeStamp = new Blog();
timeStamp.setDate(post_date);
if (timeStamp.getDate() != null) {
String datee = timeStamp.getDate().toString();
long time = Long.parseLong(datee);
String timeAgo = TimeAgo.getTimeAgo(time);
mBlogSingleDate.setText(timeAgo);
}
mBlogSingleTitle.setText(post_title);
mBlogSingleDesc.setText(post_desc);
mBlogSingleUsername.setText(post_username);
Picasso.with(BlogSingleActivity.this)
.load(post_image)
.into(mBlogSingleImage);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
private void disappearKeyboard() {
InputMethodManager inputManager =
(InputMethodManager) this.
getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(
this.getCurrentFocus().getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
private void startReplay() {
{
final String replay_val = mReplayText.getText().toString().trim();
//send date to firebase database
if (!TextUtils.isEmpty(replay_val) && mImagUri != null) {
mProgress.setMessage("جاري الإرسال....");
mProgress.show();
StorageReference filepath = mStorage.child("Replay_Images").child(mImagUri.getLastPathSegment());
filepath.putFile(mImagUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
if (mAuth.getCurrentUser() != null) {
#SuppressWarnings("VisibleForTests") final Uri downloadUrl = taskSnapshot.getDownloadUrl();
final DatabaseReference newPost = ReplayDatabase.child(mPost_key).push();
mDatabaseUser.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.getValue() != null) {
newPost.child("replayimage").setValue(downloadUrl.toString());
newPost.child("replay").setValue(replay_val);
newPost.child("replaydate").setValue(ServerValue.TIMESTAMP);
newPost.child("uid").setValue(mCurrentUser.getUid());
newPost.child("replayname").setValue(dataSnapshot.child("name").getValue()).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
chickitem();
mAdapter.notifyDataSetChanged();
}
}
});
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProgress.dismiss();
}
}
});
} else if ((!TextUtils.isEmpty(replay_val))) {
mProgress.setMessage("جاري الإرسال....");
mProgress.show();
if (mAuth.getCurrentUser() != null) {
final DatabaseReference newPost = ReplayDatabase.child(mPost_key).push();
mDatabaseUser.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.getValue() != null) {
newPost.child("replay").setValue(replay_val);
newPost.child("replaydate").setValue(ServerValue.TIMESTAMP);
newPost.child("uid").setValue(mCurrentUser.getUid());
newPost.child("replayname").setValue(dataSnapshot.child("name").getValue()).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
chickitem();
mAdapter.notifyDataSetChanged();
}
}
});
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mProgress.dismiss();
}
}
}
}
private void getfirebaseData() {
mAdapter = new FirebaseRecyclerAdapter<Blog, BlogViewHolder>(
Blog.class,
R.layout.replay_row,
BlogViewHolder.class,
ReplayDatabase.child(mPost_key)
) {
#Override
protected void populateViewHolder(final BlogViewHolder viewHolder, final Blog model, int position) {
viewHolder.setReplay(model.getReplay());
viewHolder.setReplayname(model.getReplayname());
viewHolder.setReplaydate(model.getReplaydate());
viewHolder.setReplayimage(getApplicationContext(), model.getReplayimage());
}
};
mReplayBlogList.setAdapter(mAdapter);
}
public static class BlogViewHolder extends RecyclerView.ViewHolder {
View mView;
ImageView replay_imagee;
TextView recive_replay, post_replayname, post_replaydate;
public BlogViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setReplay(String replay) {
recive_replay = mView.findViewById(R.id.replay_text);
recive_replay.setText(replay);
}
public void setReplayname(String replayname) {
post_replayname = mView.findViewById(R.id.replayer_name_field);
post_replayname.setText(replayname);
}
public void setReplaydate(Object relaydate) {
post_replaydate = mView.findViewById(R.id.post_replaydate);
Blog timeStamps = new Blog();
timeStamps.setDate(relaydate);
if (timeStamps.getDate()!=null){
String dateee = timeStamps.getDate().toString();
long times = Long.parseLong(dateee);
String timeAgoo = TimeAgo.getTimeAgo(times);
post_replaydate.setText(timeAgoo);
}
}
public void setReplayimage(final Context ctx, final String replayimage) {
replay_imagee = mView.findViewById(R.id.replay_image);
Picasso.with(ctx).load(replayimage).networkPolicy(NetworkPolicy.OFFLINE).into(replay_imagee, new Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
Picasso.with(ctx).load(replayimage).into(replay_imagee);
}
});
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_REQUEST && resultCode == RESULT_OK) {
Uri imageUri = data.getData();
CropImage.activity(imageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1, 1)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
mImagUri = result.getUri();
mselectImage.setImageURI(mImagUri);
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
private void chickitem() {
final AtomicInteger count = new AtomicInteger();
ReplayDatabase.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
long numChildren = dataSnapshot.child(mPost_key).getChildrenCount();
if (numChildren == 0) {
emptyView.setVisibility(View.VISIBLE);
emptyView.setText("لا توجد تعليقات");
mReplayBlogList.setVisibility(View.INVISIBLE);
mNumbersOfComments.setText("لا توجد تعليقات");
} else {
mNumbersOfComments.setText("" + numChildren);
emptyView.setVisibility(View.VISIBLE);
emptyView.setText("التعليقات...");
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
#Override
public void onStart(){
super.onStart();
getfirebaseData();
}
#Override
public void onResume(){
super.onResume();
getfirebaseData();
}
#Override
public boolean onCreateOptionsMenu(Menu menu){
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
The screen looks like .
There are two comments. To see these comment I have to go back and reopen this Activity.
I'm not 100% sure about this, but I think you're missing the mReplayBlogList.notifyDataSetChanged(); after the line mReplayBlogList.setAdapter(mAdapter); in getfirebaseData().
Maybe you could give it a try. Let me know if it solved :)
I am following the Codelab tutorial on firebase of the FriendlyChat app. I have reached the Indexing section. I have implemented the code as required but I do not see the app indexing work when I search google on the emulator.
Here is the manifest section.
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
<data
android:host="friendlychat.firebase.google.com"
android:scheme="http"
android:pathPrefix="/message"/>
</intent-filter>
Here is the MainActivity.java
The tutorial is on this page https://codelabs.developers.google.com/codelabs/firebase-android/#8
Could the problem be that I am using the emulator?
Here is the MainActivity.java
public class MainActivity extends AppCompatActivity
implements GoogleApiClient.OnConnectionFailedListener {
public static class MessageViewHolder extends RecyclerView.ViewHolder {
TextView messageTextView;
ImageView messageImageView;
TextView messengerTextView;
CircleImageView messengerImageView;
public MessageViewHolder(View v) {
super(v);
messageTextView = (TextView) itemView.findViewById(R.id.messageTextView);
messageImageView = (ImageView) itemView.findViewById(R.id.messageImageView);
messengerTextView = (TextView) itemView.findViewById(R.id.messengerTextView);
messengerImageView = (CircleImageView) itemView.findViewById(R.id.messengerImageView);
}
}
private static final String TAG = "MainActivity";
public static final String MESSAGES_CHILD = "messages";
private static final int REQUEST_INVITE = 1;
private static final int REQUEST_IMAGE = 2;
private static final String LOADING_IMAGE_URL = "https://www.google.com/images/spin-32.gif";
public static final int DEFAULT_MSG_LENGTH_LIMIT = 10;
public static final String ANONYMOUS = "anonymous";
private static final String MESSAGE_SENT_EVENT = "message_sent";
private String mUsername;
private String mPhotoUrl;
private SharedPreferences mSharedPreferences;
private GoogleApiClient mGoogleApiClient;
private static final String MESSAGE_URL = "http://friendlychat.firebase.google.com/message/";
private Button mSendButton;
private RecyclerView mMessageRecyclerView;
private LinearLayoutManager mLinearLayoutManager;
private ProgressBar mProgressBar;
private EditText mMessageEditText;
private ImageView mAddMessageImageView;
// Firebase instance variables
private FirebaseAuth mFirebaseAuth;
private FirebaseUser mFirebaseUser;
private DatabaseReference mFirebaseDatabaseReference;
private FirebaseRecyclerAdapter<FriendlyMessage, MessageViewHolder> mFirebaseAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
// Set default username is anonymous.
mUsername = ANONYMOUS;
// Initialize Firebase Auth
mFirebaseAuth = FirebaseAuth.getInstance();
mFirebaseUser = mFirebaseAuth.getCurrentUser();
if(mFirebaseUser == null){
// Not signed in, launch the Sign in activity
startActivity(new Intent(this, SignInActivity.class));
finish();
return;
} else {
mUsername = mFirebaseUser.getDisplayName();
if(mFirebaseUser.getPhotoUrl() != null){
mPhotoUrl = mFirebaseUser.getPhotoUrl().toString();
}
}
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
.addApi(Auth.GOOGLE_SIGN_IN_API)
.build();
// Initialize ProgressBar and RecyclerView.
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mMessageRecyclerView = (RecyclerView) findViewById(R.id.messageRecyclerView);
mLinearLayoutManager = new LinearLayoutManager(this);
mLinearLayoutManager.setStackFromEnd(true);
mMessageRecyclerView.setLayoutManager(mLinearLayoutManager);
// New child entries
mFirebaseDatabaseReference = FirebaseDatabase.getInstance().getReference();
mFirebaseAdapter = new FirebaseRecyclerAdapter<FriendlyMessage, MessageViewHolder>(
FriendlyMessage.class,
R.layout.item_message,
MessageViewHolder.class,
mFirebaseDatabaseReference.child(MESSAGES_CHILD)) {
#Override
protected FriendlyMessage parseSnapshot(DataSnapshot snapshot){
FriendlyMessage friendlyMessage = super.parseSnapshot(snapshot);
if(friendlyMessage != null){
friendlyMessage.setId(snapshot.getKey());
}
return friendlyMessage;
}
#Override
protected void populateViewHolder(final MessageViewHolder messageViewHolder,
FriendlyMessage friendlyMessage, int position) {
mProgressBar.setVisibility(ProgressBar.INVISIBLE);
if(friendlyMessage.getText() != null){
// write this message to the on-device index
FirebaseAppIndex.getInstance().update(getMessageIndexable(friendlyMessage));
Log.d(TAG, friendlyMessage.getText());
// log a view action on it
FirebaseUserActions.getInstance().end(getMessageViewAction(friendlyMessage));
messageViewHolder.messageTextView.setText(friendlyMessage.getText());
messageViewHolder.messageTextView.setVisibility(TextView.VISIBLE);
messageViewHolder.messageImageView.setVisibility(ImageView.GONE);
} else {
String imageUrl = friendlyMessage.getImageUrl();
if(imageUrl.startsWith("gs://")){
StorageReference storageReference = FirebaseStorage.getInstance()
.getReferenceFromUrl(imageUrl);
storageReference.getDownloadUrl().addOnCompleteListener(
new OnCompleteListener<Uri>() {
#Override
public void onComplete(#NonNull Task<Uri> task) {
if (task.isSuccessful()){
String downloadUrl = task.getResult().toString();
Glide.with(messageViewHolder.messageImageView.getContext())
.load(downloadUrl)
.into(messageViewHolder.messageImageView);
} else {
Log.w(TAG, "Getting download url was not successful.",
task.getException());
}
}
}
);
} else {
Glide.with(messageViewHolder.messageImageView.getContext())
.load(friendlyMessage.getImageUrl())
.into(messageViewHolder.messageImageView);
}
messageViewHolder.messageImageView.setVisibility(ImageView.VISIBLE);
messageViewHolder.messageTextView.setVisibility(TextView.GONE);
}
messageViewHolder.messengerTextView.setText(friendlyMessage.getName());
if( friendlyMessage.getPhotoUrl() == null){
messageViewHolder.messengerImageView.setImageDrawable(ContextCompat.getDrawable(MainActivity.this,
R.drawable.ic_account_circle_black_36dp));
} else {
Glide.with(MainActivity.this)
.load(friendlyMessage.getPhotoUrl())
.into(messageViewHolder.messengerImageView);
}
}
};
mFirebaseAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver(){
#Override
public void onItemRangeInserted(int positionStart, int itemCount) {
super.onItemRangeInserted(positionStart, itemCount);
int friendlyMessageCount = mFirebaseAdapter.getItemCount();
int lastVisiblePosition = mLinearLayoutManager.findLastCompletelyVisibleItemPosition();
// If the recycler view is initially being loaded or the
// user is at the bottom of the list, scroll to the bottom
// of the list to show the newly added message
if (lastVisiblePosition == -1 ||
(positionStart >= (friendlyMessageCount - 1) &&
lastVisiblePosition == (positionStart -1))){
mMessageRecyclerView.scrollToPosition(positionStart);
}
}
});
mMessageRecyclerView.setAdapter(mFirebaseAdapter);
mMessageEditText = (EditText) findViewById(R.id.messageEditText);
mMessageEditText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(mSharedPreferences
.getInt(CodelabPreferences.FRIENDLY_MSG_LENGTH, DEFAULT_MSG_LENGTH_LIMIT))});
mMessageEditText.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
#Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if (charSequence.toString().trim().length() > 0) {
mSendButton.setEnabled(true);
} else {
mSendButton.setEnabled(false);
}
}
#Override
public void afterTextChanged(Editable editable) {
}
});
mSendButton = (Button) findViewById(R.id.sendButton);
mSendButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Send messages on click.
FriendlyMessage friendlyMessage = new
FriendlyMessage(mMessageEditText.getText().toString(),
mUsername,
mPhotoUrl,
null /* no image */);
mFirebaseDatabaseReference.child(MESSAGES_CHILD)
.push().setValue(friendlyMessage);
mMessageEditText.setText("");
}
});
mAddMessageImageView = (ImageView) findViewById(R.id.addMessageImageView);
mAddMessageImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Select image for image message on click.
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
startActivityForResult(intent, REQUEST_IMAGE);
}
});
}
#Override
public void onStart() {
super.onStart();
// Check if user is signed in.
// TODO: Add code to check if user is signed in.
}
#Override
public void onPause() {
super.onPause();
}
#Override
public void onResume() {
super.onResume();
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
Log.d(TAG, "onActivityResult: requestCode=" + requestCode + ", resultCode=" + resultCode);
if(requestCode == REQUEST_IMAGE){
if(resultCode == RESULT_OK) {
if(data != null){
final Uri uri = data.getData();
Log.d(TAG, "Uri: " + uri.toString());
FriendlyMessage tempMessage = new FriendlyMessage(null, mUsername, mPhotoUrl,
LOADING_IMAGE_URL);
mFirebaseDatabaseReference.child(MESSAGES_CHILD).push()
.setValue(tempMessage, new DatabaseReference.CompletionListener(){
#Override
public void onComplete(DatabaseError databaseError,
DatabaseReference databaseReference){
if(databaseError == null){
String key = databaseReference.getKey();
StorageReference storageReference =
FirebaseStorage.getInstance()
.getReference(mFirebaseUser.getUid())
.child(key)
.child(uri.getLastPathSegment());
putImageInStorage(storageReference, uri, key);
} else {
Log.w(TAG, "Unable to write message to database.",
databaseError.toException());
}
}
});
}
}
}
}
private void putImageInStorage(StorageReference storageReference, Uri uri, final String key){
storageReference.putFile(uri).addOnCompleteListener(MainActivity.this,
new OnCompleteListener<UploadTask.TaskSnapshot>() {
#Override
public void onComplete(#NonNull Task<UploadTask.TaskSnapshot> task) {
if(task.isSuccessful()){
FriendlyMessage friendlyMessage =
new FriendlyMessage(null, mUsername, mPhotoUrl,
task.getResult().getMetadata().getDownloadUrl()
.toString());
mFirebaseDatabaseReference.child(MESSAGES_CHILD).child(key)
.setValue(friendlyMessage);
} else {
Log.w(TAG, "Image upload task was not successful.",
task.getException());
}
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.sign_out_menu:
mFirebaseAuth.signOut();
Auth.GoogleSignInApi.signOut(mGoogleApiClient);
mUsername = ANONYMOUS;
startActivity(new Intent(this, SignInActivity.class));
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
// An unresolvable error has occurred and Google APIs (including Sign-In) will not
// be available.
Log.d(TAG, "onConnectionFailed:" + connectionResult);
Toast.makeText(this, "Google Play Services error.", Toast.LENGTH_SHORT).show();
}
private Indexable getMessageIndexable(FriendlyMessage friendlyMessage) {
PersonBuilder sender = Indexables.personBuilder()
.setIsSelf(mUsername.equals(friendlyMessage.getName()))
.setName(friendlyMessage.getName())
.setUrl(MESSAGE_URL.concat(friendlyMessage.getId() + "/sender"));
PersonBuilder recipient = Indexables.personBuilder()
.setName(mUsername)
.setUrl(MESSAGE_URL.concat(friendlyMessage.getId() + "/recipient"));
Indexable messageToIndex = Indexables.messageBuilder()
.setName(friendlyMessage.getText())
.setUrl(MESSAGE_URL.concat(friendlyMessage.getId()))
.setSender(sender)
.setRecipient(recipient)
.build();
return messageToIndex;
}
private Action getMessageViewAction(FriendlyMessage friendlyMessage){
return new Action.Builder(Action.Builder.VIEW_ACTION)
.setObject(friendlyMessage.getName(), MESSAGE_URL.concat(friendlyMessage.getId()))
.setMetadata(new Action.Metadata.Builder().setUpload(false))
.build();
}
If you take from copy/paste, that is only about wrong place code, try
From Android Studio, on toolbar Click "CODE" then select "REARRANGE
CODE" than try "RUN" again.
Or try see sample from original MainActivity.java in android folder
instead android-start on
https://github.com/firebase/friendlychat-android repository
MainActivity
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
public static final String ANONYMOUS = "anonymous";
public static final int RC_SIGN_IN = 1;
private static final int RC_PHOTO_PICKER = 2;
private String mUsername;
// Firebase instance variables
private FirebaseDatabase mFirebaseDatabase;
private DatabaseReference mMessagesDatabaseReference;
private ChildEventListener mChildEventListener;
private FirebaseAuth mFirebaseAuth;
private FirebaseAuth.AuthStateListener mAuthStateListener;
private FirebaseStorage mFirebaseStorage;
private StorageReference mChatPhotosStorageReference;
private FirebaseRemoteConfig mFirebaseRemoteConfig;
private RecyclerView recyclerView;
private FloatingActionButton floatingActionButton;
PhotosAdapter contactsAdapter;
List<Photos> contactList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mUsername = ANONYMOUS;
recyclerView=(RecyclerView)findViewById(R.id.recyclerview);
floatingActionButton=(FloatingActionButton)findViewById(R.id.floatingactionbutton);
contactList = new ArrayList();
contactsAdapter=new PhotosAdapter(contactList,getApplicationContext());
// Initialize Firebase components
mFirebaseDatabase = FirebaseDatabase.getInstance();
mFirebaseAuth = FirebaseAuth.getInstance();
mFirebaseStorage = FirebaseStorage.getInstance();
mFirebaseRemoteConfig = FirebaseRemoteConfig.getInstance();
mMessagesDatabaseReference = mFirebaseDatabase.getReference().child("messages");
mChatPhotosStorageReference = mFirebaseStorage.getReference().child("chat_photos");
mAuthStateListener = new FirebaseAuth.AuthStateListener() {
#Override
public void onAuthStateChanged(#NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
onSignedInInitialize(user.getDisplayName());
} else {
// User is signed out
onSignedOutCleanup();
startActivityForResult(
AuthUI.getInstance()
.createSignInIntentBuilder()
.setIsSmartLockEnabled(false)
.setProviders(
AuthUI.EMAIL_PROVIDER,
AuthUI.GOOGLE_PROVIDER)
.build(),
RC_SIGN_IN);
}
}
};
recyclerView.setAdapter(contactsAdapter);
recyclerView.setLayoutManager(new GridLayoutManager(getApplicationContext(),5));
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/jpeg");
intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent, "Complete action using"), RC_PHOTO_PICKER);
}
});
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RC_SIGN_IN) {
if (resultCode == RESULT_OK) {
// Sign-in succeeded, set up the UI
Toast.makeText(this, "Signed in!", Toast.LENGTH_SHORT).show();
} else if (resultCode == RESULT_CANCELED) {
// Sign in was canceled by the user, finish the activity
Toast.makeText(this, "Sign in canceled", Toast.LENGTH_SHORT).show();
finish();
}
}else if (requestCode == RC_PHOTO_PICKER && resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
// Get a reference to store file at chat_photos/<FILENAME>
StorageReference photoRef = mChatPhotosStorageReference.child(selectedImageUri.getLastPathSegment());
// Upload file to Firebase Storage
photoRef.putFile(selectedImageUri)
.addOnSuccessListener(this, new OnSuccessListener<UploadTask.TaskSnapshot>() {
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
// When the image has successfully uploaded, we get its download URL
Uri downloadUrl = taskSnapshot.getDownloadUrl();
// Set the download URL to the message box, so that the user can send it to the database
Photos friendlyMessage = new Photos(downloadUrl.toString());
mMessagesDatabaseReference.push().setValue(friendlyMessage);
}
});
}
}
#Override
protected void onResume() {
super.onResume();
mFirebaseAuth.addAuthStateListener(mAuthStateListener);
}
#Override
protected void onPause() {
super.onPause();
if (mAuthStateListener != null) {
mFirebaseAuth.removeAuthStateListener(mAuthStateListener);
}
}
private void onSignedInInitialize(String username) {
mUsername = username;
attachDatabaseReadListener();
}
private void onSignedOutCleanup() {
mUsername = ANONYMOUS;
}
private void attachDatabaseReadListener() {
if (mChildEventListener == null) {
mChildEventListener = new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
Photos friendlyMessage = dataSnapshot.getValue(Photos.class);
contactsAdapter.add(friendlyMessage);
}
public void onChildChanged(DataSnapshot dataSnapshot, String s) {}
public void onChildRemoved(DataSnapshot dataSnapshot) {}
public void onChildMoved(DataSnapshot dataSnapshot, String s) {}
public void onCancelled(DatabaseError databaseError) {}
};
mMessagesDatabaseReference.addChildEventListener(mChildEventListener);
}
}
}
PhotosAdapter
public class PhotosAdapter extends RecyclerView.Adapter<PhotosAdapter.MyViewHolder> {
private List<Photos> photosList;
private Context context;
public static final String Position="AdapterPosition";
public PhotosAdapter(List<Photos> contactsList, Context context) {
this.photosList = contactsList;
this.context = context;
}
#Override
public PhotosAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.list_item, null);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(PhotosAdapter.MyViewHolder holder, int position) {
Photos contacts = photosList.get(position);
Glide.with(context).load(contacts.getPhotoUrl()).into(holder.contactimageView);
}
#Override
public int getItemCount() {
return photosList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public ImageView contactimageView;
private final Context context;
public MyViewHolder(View itemView) {
super(itemView);
context = itemView.getContext();
contactimageView = (ImageView) itemView.findViewById(R.id.imageview);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
/* Intent intent = new Intent(context, ChatActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(Position,getAdapterPosition());
context.startActivity(intent);*/
}
public void add(Photos photos){
photosList.add(photos);
}
}
Photos
public class Photos {
private String photoUrl;
public Photos() {
}
public Photos(String photoUrl) {
this.photoUrl = photoUrl;
}
public String getPhotoUrl() {
return photoUrl;
}
public void setPhotoUrl(String photoUrl) {
this.photoUrl = photoUrl;
}
}
This is my code. I am uploading an image on click of FloatingAction button to Firebase Storage.The image gets uploaded successfully, but I am not able to retrieve the image to the ImageView of my RecyclerView. What am I doing wrong? I am also able to see url of image in Storage.Still not able to retrieve message in imageview of recyclerview. Please help.......
you can try this also:-
yourFragment.isResumed()
I have a problem that I do not know which is a bug, when I press the add photo button or the send button does not happen at all and I do not get any error,
The first button should open my photos, and the second should send to a RecyclerView in a fragament I give my code
Sorry for my english use the google translate
the fragment
public class PostCreateDialog extends DialogFragment implements View.OnClickListener{
private static final int RC_PHOTO_PICKER = 1;
private Post mPost;
private ProgressDialog mProgressDialog;
private ImageView mPostImageView;
private View mRootView;
private Uri mSelectedUri;
private ImageButton sendPostButton;
private ImageButton selectFotoButton;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
mPost = new Post();
mProgressDialog = new ProgressDialog(getContext());
mRootView = getActivity().getLayoutInflater().inflate(R.layout.create_post_dialog, null);
mPostImageView = (ImageView) mRootView.findViewById(R.id.post_dialog_display);
selectFotoButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_select_imageview);
sendPostButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_send_imageview);
builder.setView(mRootView);
return builder.create();
}
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.post_dialog_select_imageview:
selectImage();
break;
case R.id.post_dialog_send_imageview:
sendPost();
break;
}
}
private void sendPost() {
mProgressDialog.setMessage("Sending post...");
mProgressDialog.setCancelable(false);
mProgressDialog.setIndeterminate(true);
mProgressDialog.show();
FirebaseUtils.getUserRef(FirebaseUtils.getCurrentUser().getEmail().replace(".",",")).addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
User user = dataSnapshot.getValue(User.class);
final String postId = FirebaseUtils.getUid();
TextView postDialogText = (TextView) mRootView.findViewById(R.id.post_dialog_edittext);
String text = postDialogText.getText().toString();
mPost.setUser(user);
mPost.setNumOfLikes(0);
mPost.setNumOfComments(0);
mPost.setNumOfUnlikes(0);
mPost.setTimeOfcreation(System.currentTimeMillis());
mPost.setPostText(text);
if(mSelectedUri != null){
FirebaseUtils.getImageRef().child(mSelectedUri.getLastPathSegment()).putFile(mSelectedUri).addOnSuccessListener(getActivity(), new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
String url = Contants.POST_IMAGES + "/" + mSelectedUri.getLastPathSegment();
mPost.setImageUrl(url);
addToMyPostList(postId);
}
});
}else {
addToMyPostList(postId);
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
mProgressDialog.dismiss();
}
});
}
// ESTE DE AQUI ES COMO UN FINAL A TOODO SI SE COMPLETA O SI CANCELA
private void addToMyPostList(String postId){
FirebaseUtils.getPostRef().child(postId).setValue(mPost);
FirebaseUtils.getPostRef().child(postId).setValue(true).addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
mProgressDialog.dismiss();
dismiss();
}
});
}
// ESTOS DOS METODOS SIRVEN PARA SELECCIONAR LA IMAGEN
private void selectImage() {
Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);
intent1.setType("image/jpeg");
intent1.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent1, "Comlete action using"), RC_PHOTO_PICKER);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == RC_PHOTO_PICKER){
if(resultCode == RESULT_OK){
mSelectedUri = data.getData();
mPostImageView.setImageURI(mSelectedUri);
}
}
}
}
the dialog:
public class PostCreateDialog extends DialogFragment implements View.OnClickListener{
private static final int RC_PHOTO_PICKER = 1;
private Post mPost;
private ProgressDialog mProgressDialog;
private ImageView mPostImageView;
private View mRootView;
private Uri mSelectedUri;
private ImageButton sendPostButton;
private ImageButton selectFotoButton;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
mPost = new Post();
mProgressDialog = new ProgressDialog(getContext());
mRootView = getActivity().getLayoutInflater().inflate(R.layout.create_post_dialog, null);
mPostImageView = (ImageView) mRootView.findViewById(R.id.post_dialog_display);
selectFotoButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_select_imageview);
sendPostButton = (ImageButton) mRootView.findViewById(R.id.post_dialog_send_imageview);
builder.setView(mRootView);
return builder.create();
}
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.post_dialog_select_imageview:
selectImage();
break;
case R.id.post_dialog_send_imageview:
sendPost();
break;
}
}
private void sendPost() {
mProgressDialog.setMessage("Sending post...");
mProgressDialog.setCancelable(false);
mProgressDialog.setIndeterminate(true);
mProgressDialog.show();
FirebaseUtils.getUserRef(FirebaseUtils.getCurrentUser().getEmail().replace(".",",")).addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
User user = dataSnapshot.getValue(User.class);
final String postId = FirebaseUtils.getUid();
TextView postDialogText = (TextView) mRootView.findViewById(R.id.post_dialog_edittext);
String text = postDialogText.getText().toString();
mPost.setUser(user);
mPost.setNumOfLikes(0);
mPost.setNumOfComments(0);
mPost.setNumOfUnlikes(0);
mPost.setTimeOfcreation(System.currentTimeMillis());
mPost.setPostText(text);
if(mSelectedUri != null){
FirebaseUtils.getImageRef().child(mSelectedUri.getLastPathSegment()).putFile(mSelectedUri).addOnSuccessListener(getActivity(), new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
String url = Contants.POST_IMAGES + "/" + mSelectedUri.getLastPathSegment();
mPost.setImageUrl(url);
addToMyPostList(postId);
}
});
}else {
addToMyPostList(postId);
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
mProgressDialog.dismiss();
}
});
}
// ESTE DE AQUI ES COMO UN FINAL A TOODO SI SE COMPLETA O SI CANCELA
private void addToMyPostList(String postId){
FirebaseUtils.getPostRef().child(postId).setValue(mPost);
FirebaseUtils.getPostRef().child(postId).setValue(true).addOnCompleteListener(getActivity(), new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
mProgressDialog.dismiss();
dismiss();
}
});
}
// ESTOS DOS METODOS SIRVEN PARA SELECCIONAR LA IMAGEN
private void selectImage() {
Intent intent1 = new Intent(Intent.ACTION_GET_CONTENT);
intent1.setType("image/jpeg");
intent1.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent1, "Comlete action using"), RC_PHOTO_PICKER);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == RC_PHOTO_PICKER){
if(resultCode == RESULT_OK){
mSelectedUri = data.getData();
mPostImageView.setImageURI(mSelectedUri);
}
}
}
}
Try to display any toast on button click.
If toast appears then your click event is working and if the toast is not shown then your button click is not working.