Develop Reference

Images not showing in List Firebase

When using a custom adapter in Firebase, I ran into a problem that everything works, but the pictures in the sheet are not displayed. Something incomprehensible is highlighted, but not her. It is necessary that they be in a normal sheet and they can be seen. I think it's because of the context in Picasso. The guide I followed had a wish(mContext) method that I can't use now. Please help, I don't understand what is the problem. I am attaching the image_item.xml code
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/text_view_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:text="Name"
android:textColor="#android:color/black"
android:textSize="20sp" />
<ImageView
android:id="#+id/image_view_upload"
android:layout_width="match_parent"
android:layout_height="200dp" />
</LinearLayout>
</androidx.cardview.widget.CardView>
activity_images
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context=".ImagesActivity">
<ProgressBar
android:id="#+id/progress_circle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import com.squareup.picasso.Picasso;
import java.util.List;
public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ImageViewHolder> {
private Context mContext;
private List<Upload> mUploads;
public ImageAdapter(Context context, List<Upload> uploads) {
mContext = context;
mUploads = uploads;
}
#Override
public ImageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(mContext).inflate(R.layout.image_item, parent, false);
return new ImageViewHolder(v);
}
#Override
public void onBindViewHolder(ImageViewHolder holder, int position) {
Upload uploadCurrent = mUploads.get(position);
holder.textViewName.setText(uploadCurrent.getName());
Picasso.get()
.load(uploadCurrent.getImageUrl())
.placeholder(R.mipmap.ic_launcher)
.fit()
.centerCrop()
.into(holder.imageView);
}
#Override
public int getItemCount() {
return mUploads.size();
}
public class ImageViewHolder extends RecyclerView.ViewHolder {
public TextView textViewName;
public ImageView imageView;
public ImageViewHolder(View itemView) {
super(itemView);
textViewName = itemView.findViewById(R.id.text_view_name);
imageView = itemView.findViewById(R.id.image_view_upload);
}
}
}
import android.os.Bundle;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
import java.util.List;
public class ImagesActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private ImageAdapter mAdapter;
private ProgressBar mProgressCircle;
private DatabaseReference mDatabaseRef;
private List<Upload> mUploads;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_images);
mRecyclerView = findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mProgressCircle = findViewById(R.id.progress_circle);
mUploads = new ArrayList<>();
mDatabaseRef = FirebaseDatabase.getInstance().getReference("uploads");
mDatabaseRef.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
Upload upload = postSnapshot.getValue(Upload.class);
mUploads.add(upload);
}
mAdapter = new ImageAdapter(ImagesActivity.this, mUploads);
mAdapter.notifyDataSetChanged();
mRecyclerView.setAdapter(mAdapter);
mProgressCircle.setVisibility(View.INVISIBLE);
}
#Override
public void onCancelled(DatabaseError databaseError) {
Toast.makeText(ImagesActivity.this, databaseError.getMessage(), Toast.LENGTH_SHORT).show();
mProgressCircle.setVisibility(View.INVISIBLE);
}
});
}
}

How can I integrate the RecyclerView with images in android?

I am trying to create the image gallery . I am using the recyclerview for the same as there can be large number of images. This is what I am trying to do :
When the user opens up the app android will ask for its permission for images (working)
After selecting either option add it to the image view present in the recyclerview (not working).
If image is saved how to re-render it back to the recyclerview (not working)
Here is what I am trying to do :
This is my Activity file named GalleryActivity.java :
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
import com.traveloholic.R;
import com.traveloholic.models.Gallery;
import java.util.ArrayList;
public class GalleryActivity extends AppCompatActivity {
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery);
RecyclerView recyclerView = (RecyclerView)findViewById(R.id.imagegallery);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getApplicationContext(),2);
recyclerView.setLayoutManager(layoutManager);
Gallery galleryObj = this.getImage();
GalleryAdapter adapter = new GalleryAdapter(GalleryActivity.this, galleryObj);
recyclerView.setAdapter(adapter);
}
private Gallery getImage(){
Gallery galleryObj = new Gallery();
galleryObj.setImageUrl("");
galleryObj.setImageTitle(null);
return galleryObj;
}
public void getImage(ImageView img){
this.imageView = img;
this.selectImage(GalleryActivity.this);
}
private void selectImage(Context context) {
final CharSequence[] options = {"Take Photo", "Choose from Gallery", "Cancel"};
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Choose your profile picture");
builder.setItems(options, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo")) {
Intent takePicture = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePicture, 0);
} else if (options[item].equals("Choose from Gallery")) {
Intent pickPhoto = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickPhoto, 1);//one can be replaced with any action code
} else if (options[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode != RESULT_CANCELED) {
switch (requestCode) {
case 0:
if (resultCode == RESULT_OK && data != null) {
Bitmap selectedImage = (Bitmap) data.getExtras().get("data");
this.imageView.setImageBitmap(selectedImage);
}
break;
case 1:
if (resultCode == RESULT_OK && data != null) {
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
if (selectedImage != null) {
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
if (cursor != null) {
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
this.imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
cursor.close();
}
}
}
break;
}
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
}
Here is the layout file activity_galler.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context=".activities.GalleryActivity">
<TextView
android:id="#+id/gallery_screen_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/gallery_screen_message"
android:textSize="#dimen/page_identifier_textSize"
android:fontFamily="#font/sanfranciscodisplay_bold"
android:textColor="#color/colorPrimary"
android:layout_marginTop="#dimen/page_identifier_marginTop"
android:textAlignment="center"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"/>
<TextView
android:id="#+id/gallery_screen_submessage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=""
android:textSize="11sp"
android:layout_below="#id/gallery_screen_message"
android:textColor="#color/black"
android:fontFamily="#font/sanfranciscodisplay_regular"
android:textAlignment="center"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"/>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/imagegallery"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/gallery_screen_submessage"
android:layout_marginBottom="85dp"
android:layout_marginTop="#dimen/activity_signup_first_marginTop">
</androidx.recyclerview.widget.RecyclerView>
<Button
android:id="#+id/continue_to_fourth"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/custom_layout_first"
android:fontFamily="#font/sanfranciscodisplay_regular"
android:text="#string/continue_msg"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="18sp"
android:layout_alignParentBottom="true"
android:layout_marginStart="16dp"
android:layout_marginBottom="#dimen/activity_signup_marginBottom"
android:layout_marginEnd="16dp">
</Button>
</RelativeLayout>
Here is the Adapter class GalleryAdapter :
import android.app.Dialog;
import android.content.Context;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.recyclerview.widget.RecyclerView;
import com.squareup.picasso.Picasso;
import com.traveloholic.R;
import com.traveloholic.models.Gallery;
import java.io.File;
import java.util.ArrayList;
public class GalleryAdapter extends RecyclerView.Adapter<GalleryAdapter.ViewHolder> {
private Gallery galleryObj;
private Context context;
public GalleryAdapter(Context context, Gallery galleryObj) {
this.galleryObj = galleryObj;
this.context = context;
}
#Override
public GalleryAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.image_cell_layout, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final GalleryAdapter.ViewHolder viewHolder, int i) {
viewHolder.img.setImageBitmap(BitmapFactory.decodeFile(galleryObj.getImageUrl()));
}
#Override
public int getItemCount() {
//return galleryList.size();
return 1;
}
public class ViewHolder extends RecyclerView.ViewHolder{
//private TextView title;
private ImageView img;
private ImageButton addRemoveButton;
public ViewHolder(View view) {
super(view);
img = (ImageView) view.findViewById(R.id.img);
addRemoveButton = (ImageButton) itemView.findViewById(R.id.add_remove_icon);
this.addOperationToAddButton();
}
private void addOperationToAddButton(){
addRemoveButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
GalleryActivity galleryActivity = (GalleryActivity)context;
galleryActivity.getImage(img);
}
}
);
}
}
}
Here is my another layout file image_cell_layout.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#drawable/custom_layout_five"
android:layout_height="150dp"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="16dp"
android:id="#+id/image_layout">
<ImageView
android:id="#+id/img"
android:layout_margin="5dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/photo_placeholder" />
<ImageButton
android:id="#+id/add_remove_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:src="#drawable/add_image" />
</RelativeLayout>
Can anyone help me with this how can I solve the three problems mentioned above . Any better aproach to do all this ??
Thanks

How to Save İmage from ViewPager?

My problem is that it always saves the same photo when I press the Save Button. I have more than 10 photos in my Viewpager, it just saves the first one, so I can't save what I want the photo,
I want to save the open photo.
I want the photo in the open window to be saved.
items.xml
<?xml version="1.0" encoding="utf-8" ?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/gallery_root"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/layut"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:orientation="vertical"
android:weightSum="30">
<FrameLayout
android:id="#+id/wallpaper_preview_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/movie_image"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</LinearLayout>
</RelativeLayout>
fragment_simple.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Fragment.SimpleFragment">
<androidx.viewpager.widget.ViewPager
android:id="#+id/vivi_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<Button
android:id="#+id/bSave"
android:layout_width="80dp"
android:layout_height="40dp"
android:layout_alignParentTop="true"
android:layout_marginStart="15dp"
android:gravity="center"
android:layout_marginTop="150dp"
android:text="Save"
android:layout_alignParentStart="true"
android:textSize="24sp"
android:padding="0dp" />
</RelativeLayout>
SimpleFragment.java
package com.example.duvarlar.Fragment;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.viewpager.widget.ViewPager;
import android.os.Environment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
import com.example.duvarlar.Adapters.MyAdapter;
import com.example.duvarlar.Listeneer.IFirebaseLoadDone;
import com.example.duvarlar.Models.Movie;
import com.example.duvarlar.R;
import com.example.duvarlar.Transformer.DeptPageTransformer;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* A simple {#link Fragment} subclass.
*/
public class SimpleFragment extends Fragment implements IFirebaseLoadDone, ValueEventListener {
ViewPager viewPager;
MyAdapter adapter;
DatabaseReference movies;
IFirebaseLoadDone iFirebaseLoadDone;
Button save;
OutputStream outputStream;
public SimpleFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_simple, container, false);
movies = FirebaseDatabase.getInstance().getReference("Sports");
iFirebaseLoadDone = this;
loadMovie();
viewPager = (ViewPager) view.findViewById(R.id.vivi_pager);
save = (Button) view.findViewById(R.id.bSave);
save.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
viewPager.setDrawingCacheEnabled(true);
Bitmap bitmap = viewPager.getDrawingCache();
String root = Environment.getExternalStorageDirectory().toString();
File newDir = new File(root + "/Android");//directory name of your choice
newDir.mkdirs();
Random gen = new Random();
int n = 10000;
n = gen.nextInt(n);
String fotoname = "Photo-" + n + ".jpg";
File file = new File(newDir, fotoname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
Toast.makeText(getActivity(), "Saved to your folder" + fotoname, Toast.LENGTH_SHORT).show();
} catch (Exception e) {
}
}
});
return view;
}
private void loadMovie() {
movies.addValueEventListener(this);
}
#Override
public void onFirebaseLoadSuccess(List<Movie> movieList) {
adapter = new MyAdapter(getContext(), movieList);
viewPager.setAdapter(adapter);
}
#Override
public void onFirebasLoadFailed(String message) {
Toast.makeText(getContext(), "" + message, Toast.LENGTH_SHORT).show();
}
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
List<Movie> movieList = new ArrayList<>();
for (DataSnapshot moviesSnapShot : dataSnapshot.getChildren())
movieList.add(moviesSnapShot.getValue(Movie.class));
iFirebaseLoadDone.onFirebaseLoadSuccess(movieList);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
iFirebaseLoadDone.onFirebasLoadFailed(databaseError.getMessage());
}
#Override
public void onDestroy() {
movies.removeEventListener(this);
super.onDestroy();
}
#Override
public void onResume() {
super.onResume();
}
#Override
public void onStop() {
movies.removeEventListener(this);
super.onStop();
}
}
MyAdapter.java
package com.example.duvarlar.Adapters;
import android.app.WallpaperManager;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Build;
import android.os.Environment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;
import com.example.duvarlar.Models.Movie;
import com.example.duvarlar.R;
import com.google.android.material.bottomsheet.BottomSheetDialog;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.squareup.picasso.Picasso;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
public class MyAdapter extends PagerAdapter {
Context context;
List<Movie> movieList;
LayoutInflater inflater;
OutputStream outputStream;
public MyAdapter(Context context, List<Movie> movieList) {
this.context = context;
this.movieList = movieList;
inflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return movieList.size();
}
#Override
public boolean isViewFromObject(#NonNull View view, #NonNull Object object) {
return view == object;
}
#Override
public void destroyItem(#NonNull ViewGroup container, int position, #NonNull Object object) {
((ViewPager)container).removeView((View)object);
}
#NonNull
#Override
public Object instantiateItem(#NonNull final ViewGroup container, final int position) {
final View view = inflater.inflate(R.layout.items,container,false);
final ImageView movie_image = (ImageView)view.findViewById(R.id.movie_image);
Picasso.get()
.load(movieList.get(position).getImage())
.fit()
.centerCrop()
.into(movie_image);
container.addView(view);
return view;
}
}

Android Fragment that is getting data from Firebase is not showing

I have an app with a bottom navigation view that changes between 4 fragments and I'm trying to make it so that those fragments are displayed with data from firebase using FirebaseRecyclerView Adapter.
I have everything set up but the layout that the FirebaseRecyclerView Adapter inflates is not appearing.
My MainAcitivity.java
package com.pap.diogo.pilltrack;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.firebase.ui.database.FirebaseRecyclerOptions;
import com.firebase.ui.database.SnapshotParser;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
public class MainActivity extends AppCompatActivity {
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
Fragment selectedFragment = null;
switch (item.getItemId()) {
case R.id.navigation_home:
selectedFragment = new HomeFragment();
break;
case R.id.navigation_pills:
selectedFragment = new PillsFragment();
break;
case R.id.navigation_appointment:
selectedFragment = new AppointsFragment();
break;
case R.id.navigation_account:
selectedFragment = new AccountFragment();
break;
}
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, selectedFragment).commit();
return true;
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user == null) {
Intent VerifyLogin = new Intent(MainActivity.this, Launcher.class);
VerifyLogin.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(VerifyLogin);
}
BottomNavigationView navigation = findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, new HomeFragment()).commit();
}
#Override
protected void onStart() {
super.onStart();
}
#Override
protected void onStop() {
super.onStop();
}
};
My AccountFragment.java
package com.pap.diogo.pilltrack;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.firebase.ui.database.FirebaseRecyclerOptions;
import com.firebase.ui.database.SnapshotParser;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ValueEventListener;
public class AccountFragment extends Fragment {
private RecyclerView AccountUsers;
private View mMainView;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
mMainView = inflater.inflate(R.layout.fragment_account, container, false);
AccountUsers = mMainView.findViewById(R.id.accountlist);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
AccountUsers.setLayoutManager(linearLayoutManager);
AccountUsers.setHasFixedSize(true);
return mMainView;
}
#Override
public void onStart() {
super.onStart();
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
final String userid = user.getUid();
final DatabaseReference ref = FirebaseDatabase.getInstance().getReference("Users");
FirebaseRecyclerOptions<Account> AccountQ = new FirebaseRecyclerOptions.Builder<Account>().setQuery(ref, Account.class).setLifecycleOwner(this).build();
FirebaseRecyclerAdapter<Account, AccountInfo> AccountAdapter = new FirebaseRecyclerAdapter<Account, AccountInfo>(AccountQ){
#NonNull
#Override
public AccountInfo onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
return new AccountInfo(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.account, viewGroup, false));
}
#Override
protected void onBindViewHolder(#NonNull final AccountInfo holder, int position, #NonNull final Account model) {
ref.child(userid).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
final String name = dataSnapshot.child("name").getValue().toString();
final String age = dataSnapshot.child("idade").getValue().toString();
holder.setName(name);
holder.setAge(age);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
};
AccountUsers.setAdapter(AccountAdapter);
}
public static class AccountInfo extends RecyclerView.ViewHolder{
View AccountL;
public AccountInfo(#NonNull View itemView) {
super(itemView);
AccountL = itemView;
}
public void setName(String name){
TextView AccountName = AccountL.findViewById(R.id.AccountName0);
AccountName.setText(name);
}
public void setAge(String age){
TextView AccountAge = AccountL.findViewById(R.id.AccountAge0);
AccountAge.setText(age);
}
}
}
My account.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/AccountUser"
android:layout_width="match_parent"
android:layout_height="163dp"
android:layout_marginStart="15dp"
android:layout_marginLeft="15dp"
android:layout_marginTop="15dp"
android:layout_marginEnd="15dp"
android:layout_marginRight="15dp"
android:layout_marginBottom="15dp"
android:background="#drawable/edit_bg"
android:padding="15dp">
<RelativeLayout
android:id="#+id/AccountImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_user"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/AccountInfos"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/AccountImage"
android:layout_toEndOf="#id/AccountImage"
android:layout_marginStart="15dp"
android:layout_marginLeft="15dp">
<TextView
android:id="#+id/AccountName0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:text="Nome1"
android:textColor="#color/colorWhite"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="#+id/AccountAge0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/AccountName0"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:text="Idade1"
android:textColor="#color/colorWhite"
android:textSize="20sp"
android:textStyle="bold" />
<Button
android:id="#+id/AccountChangePass"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/AccountAge0"
android:text="Mudar Palavra-Passe"
android:textColor="#color/colorWhite"
android:textSize="18sp"
android:textStyle="bold"
android:textAllCaps="false"
android:padding="10dp"
android:layout_marginTop="10dp"
android:background="#drawable/custom_button"/>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/AccountUser">
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="15dp"
android:layout_marginLeft="15dp"
android:layout_marginEnd="15dp"
android:layout_marginRight="15dp"
android:src="#drawable/ic_add"
android:padding="5dp"
android:background="#drawable/add_button"/>
</RelativeLayout>
</RelativeLayout>
My fragment_account.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/accountlist">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
GitHub of my APP

I fixed it.
All I had to do was to remove this line of code:
AccountUsers.setHasFixedSize(true);

Null pointer exception problem with grabbing text from radio button from xml

I am trying to grab male female text from this radio button, but it give me a null pointer exception, and I am just stuck at every point of trying to fix that whether storing the text as another variable entirely or whatever. This is using firebase as it's backend, so maybe this is just a new quirk in irebase not to allow this.
package io.github.anoobishnoob.barker;
import android.content.Intent;
import android.nfc.Tag;
import android.renderscript.Sampler;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Logger;
public class RegistrationActivity extends AppCompatActivity {
//TODO: fix nullpointer eexception on line 64-67
private Button mRegister;
private EditText mEmail, mPassword, mName;
private RadioGroup mRadioGroup;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener firebaseAuthStateListener;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
mAuth = FirebaseAuth.getInstance();
firebaseAuthStateListener = new FirebaseAuth.AuthStateListener() {
#Override
public void onAuthStateChanged(#NonNull FirebaseAuth firebaseAuth) {
final FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null){
Intent intent = new Intent(RegistrationActivity.this, MainActivity.class);
startActivity(intent);
finish();
return;
}
}
};
mRegister = (Button) findViewById(R.id.register);
mEmail = (EditText) findViewById(R.id.email);
mPassword = (EditText) findViewById(R.id.password);
mName = (EditText) findViewById(R.id.name);
mRadioGroup = (RadioGroup) findViewById(R.id.radioGroup);
Log.d("test debug mRadioGroup", mRadioGroup.toString());
mRegister.setOnClickListener(new View.OnClickListener() {
int selectId = mRadioGroup.getCheckedRadioButtonId();
final RadioButton radioButton = (RadioButton) findViewById(selectId);
//String radioButtonValue = String.valueOf(radioButton.getText());
#Override
public void onClick(View v) {
final String email = mEmail.getText().toString();
final String password = mPassword.getText().toString();
final String name = mName.getText().toString();
Log.d("test debug", mRadioGroup.toString());
//Log.d("test debug", radioButton.toString());
mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(RegistrationActivity.this, new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if (!task.isSuccessful()) {
Toast.makeText(RegistrationActivity.this, "sign up error", Toast.LENGTH_SHORT);
}
else{
String userId = mAuth.getCurrentUser().getUid();
DatabaseReference currentUserDb = FirebaseDatabase
.getInstance()
.getReference()
.child("Users")
.child(radioButton.toString()).child(userId).child("name");
currentUserDb.setValue(name);
}
}
});
}
});
}
#Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(firebaseAuthStateListener);
}
#Override
protected void onStop() {
super.onStop();
mAuth.removeAuthStateListener(firebaseAuthStateListener);
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
tools:context="io.github.anoobishnoob.barker.RegistrationActivity"
android:orientation="vertical">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="name"
android:id="#+id/name"/>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/radioGroup">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Male"/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Female"/>
</RadioGroup>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="email"
android:id="#+id/email"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="password"
android:id="#+id/password"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="register"
android:id="#+id/register"/>
</LinearLayout>

Firstly give id to both RadioButton.
And after that, you can use it like below
int rid = mRadioGroup.getCheckedRadioButtonId();
RadioButton rb = (RadioButton) findViewById(rid);
String radioText = rb.getText().toString();

Instead of radioButton.toString() use radioButton.getText().toString();