Develop Reference

how to upload multiple images firebase

What I want to do is load different images into ImageView and save them in DB.
My current situation has been successful in obtaining images from albums and cameras, but one image appears in two ImageViews at the same time.
If you look at what's stored in DB, the same picture is stored in two child.
I think the way I think is to give image_url differently, but I don't know if this is a normal way or not.
I'd appreciate it if you could let me know.
add
private void addCoordi() {
//3) add data to db
progressDialog.setMessage("Adding Cody...");
progressDialog.show();
String timestamp = ""+System.currentTimeMillis();
if(image_uri == null ){
//upload without image
//setup data to upload
HashMap<String,Object> hashMap = new HashMap<>();
hashMap.put("codyId",""+timestamp);
hashMap.put("codyTitle",""+coordiTitle);
hashMap.put("codyCategory",""+coordiCategory);
hashMap.put("codyIcon",""); //no image, set empty
hashMap.put("codyIcon2",""); //no image, set empty
hashMap.put("timestamp",""+timestamp);
DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Users");
reference.child(firebaseAuth.getUid()).child("Cody").child(timestamp).setValue(hashMap).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void unused) {
//added to db
progressDialog.dismiss();
Toast.makeText(AdditionCoordiActivity.this,"Cody added...",Toast.LENGTH_SHORT).show();
clearData();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
//failed adding to db
progressDialog.dismiss();
Toast.makeText(AdditionCoordiActivity.this,""+e.getMessage(),Toast.LENGTH_SHORT).show();
}
});
}
else{
//upload with image
//first upload image to storage
//name and path of image to be uploaded
String filePathAndName = "cody_images/"+""+timestamp;
StorageReference storageReference = FirebaseStorage.getInstance().getReference(filePathAndName);
storageReference.putFile(image_uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
//image uploaded
//get url of uploaded image
Task<Uri> uriTask = taskSnapshot.getStorage().getDownloadUrl();
while(!uriTask.isSuccessful());
Uri downloadImageUri = uriTask.getResult();
if(uriTask.isSuccessful()){
//url of image received, upload to db
//setup data to upload
HashMap<String,Object> hashMap = new HashMap<>();
hashMap.put("codyId",""+timestamp);
hashMap.put("codyTitle",""+coordiTitle);
hashMap.put("productCategory",""+coordiCategory);
hashMap.put("codyIcon",""+downloadImageUri); //no image, set empty
hashMap.put("codyIcon2",""+downloadImageUri); //no image, set empty
hashMap.put("timestamp",""+timestamp);
hashMap.put("uid",""+firebaseAuth.getUid());
DatabaseReference reference = FirebaseDatabase.getInstance().getReference("Users");
reference.child(firebaseAuth.getUid()).child("Cody").child(timestamp).setValue(hashMap).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void unused) {
//added to db
progressDialog.dismiss();
Toast.makeText(AdditionCoordiActivity.this,"Cody added...",Toast.LENGTH_SHORT).show();
clearData();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
//failed adding to db
progressDialog.dismiss();
Toast.makeText(AdditionCoordiActivity.this,""+e.getMessage(),Toast.LENGTH_SHORT).show();
}
});
}
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
//failed adding to image
progressDialog.dismiss();
Toast.makeText(AdditionCoordiActivity.this, "" + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
}
onActivity
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if(resultCode == RESULT_OK){
if(requestCode == IMAGE_PICK_GALLEY_CODE){
//image picked from galley
//save pick image uri
image_uri = data.getData();
//set image
productIconIvOne.setImageURI(image_uri);
productIconIvTwo.setImageURI(image_uri);
}else if(requestCode == IMAGE_PICK_CAMERA_CODE){
// image picked from camera
productIconIvOne.setImageURI(image_uri);
productIconIvTwo.setImageURI(image_uri);
}
}
super.onActivityResult(requestCode, resultCode, data);
}

How to change value of string from onSucces class

Here i read some input which i want to use for creating "Produs" object which i upload it to the firebase storage, then i want to retrieve it to display a list of objects, i have a problem when i want to update the path to the image storage, to retrieve it later.
public class Add extends AppCompatActivity {
DatabaseReference mDatabase;
EditText etNume, etCantitate, etPret;
Button btnSubmit, btnImage;
Uri mImage;
ImageView ivTest;
public static String path="";
StorageReference mStorageRef;
final int GALLERY_INTENT = 2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add);
mDatabase = FirebaseDatabase.getInstance().getReference();
etNume = findViewById(R.id.etNume);
etCantitate = findViewById(R.id.etCantitate);
etPret = findViewById(R.id.etPret);
btnSubmit = findViewById(R.id.btnSubmit);
btnImage = findViewById(R.id.btnImage);
ivTest =findViewById(R.id.ivTest);
mStorageRef = FirebaseStorage.getInstance().getReference();
btnImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.setType("image/*");
startActivityForResult(i, GALLERY_INTENT);
}
});
btnSubmit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String nume, pret,cantitate;
nume = etNume.getText().toString().trim();
pret = etPret.getText().toString().trim();
cantitate = etCantitate.getText().toString().trim();
if(TextUtils.isEmpty(nume)){
etNume.setError("Email is required.");
return;
}
if(TextUtils.isEmpty(pret)){
etPret.setError("Email is required.");
return;
}
if(TextUtils.isEmpty(cantitate)){
etCantitate.setError("Email is required.");
return;
}
StorageReference file = mStorageRef.child("Produs").child(nume + ".jpg");
file.putFile(mImage).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
path += taskSnapshot.getMetadata().toString(); /// good path
Toast.makeText(Add.this, path, Toast.LENGTH_SHORT).show();
}
});
Toast.makeText(Add.this, path, Toast.LENGTH_SHORT).show();/// null path
Produs p=new Produs(nume,cantitate,pret,path);
Task task =mDatabase.child("Produs").child(nume).setValue(p);
task.addOnSuccessListener(new OnSuccessListener() {
#Override
public void onSuccess(Object o) {
Toast.makeText(Add.this, "Produsul a fost adaugat cu succes", Toast.LENGTH_SHORT).show();
startActivity(new Intent(getApplicationContext(),MainActivity.class));
}
});
task.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(Add.this, e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == GALLERY_INTENT && resultCode == RESULT_OK && data != null && data.getData() != null){
mImage = data.getData();
ivTest.setImageURI(mImage);
}
}
}
How to have path changed from the onSuccess method?
Basically i want to change the path after i upload an image to build " Produs " object
Also, this is the good path to the image storage? As taskSnapshot.getdownloadURL() doesn't work for me.

The problem is not where you set and read the path variable, the problem is when you do this. Since the getDownloadURL() method makes a call to the server, its onSuccess may run much later than you think.
If you're seeing the wrong value for path, it's very likely that the onSuccess that sets it hasn't run yet. The easiest way to verify that is by either setting breakpoints on the read and write and running in a debugger, or by adding some logging and checking the order of that in your logcat.
The solution for this type of problem is always the same: any code that needs the download URL, needs to either be inside onSuccess, be called from there, or be synchronized in some other way.
So in your case, move the `` into the onSuccess:
StorageReference file = mStorageRef.child("Produs").child(nume + ".jpg");
file.putFile(mImage).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
path += taskSnapshot.getMetadata().toString(); /// good path
Toast.makeText(Add.this, path, Toast.LENGTH_SHORT).show();
Toast.makeText(Add.this, path, Toast.LENGTH_SHORT).show();
Produs p=new Produs(nume,cantitate,pret,path);
Task task =mDatabase.child("Produs").child(nume).setValue(p);
task.addOnSuccessListener(new OnSuccessListener() {
...
});
task.addOnFailureListener(new OnFailureListener() {
...
});
}
});
For more on this, see:
How to store download image url in realtime database firebase android
How to store Url into ArrayList from Firebase Storage?
Can someone help me with logic of the firebase on success listener
getContactsFromFirebase() method return an empty list
Setting Singleton property value in Firebase Listener
Not all of these are directly about Cloud Storage for Firebase, but the explanation applies here as well.

Android App crashes after capturing image using camera intent

The application attempts to capture an image using the device's camera and upload it to FireBase. However, after an image is captured, the app crashes.
It shows the error: java.lang.NullPointerException: Attempt to invoke virtual method 'android.net.Uri android.content.Intent.getData()' on a null object reference
Functions in MainActivity:
private File createImageFile() throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
Log.e("MainActivity", "Error creating file", e);
}
if (photoFile != null) {
photoURI = FileProvider.getUriForFile(this,
"com.example.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
}
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
storage = FirebaseStorage.getInstance().getReference();
take_pic = (Button) findViewById(R.id.take_pic);
imageView = (ImageView) findViewById(R.id.pic_view);
progressDialog = new ProgressDialog(this);
take_pic.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
dispatchTakePictureIntent();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
progressDialog.setMessage("Uploading...");
progressDialog.show();
StorageReference filepath;
Uri uri = data.getData();
filepath = storage.child("Photos").child(uri.getLastPathSegment());
filepath.putFile(photoURI).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(MainActivity.this, "Upload Successful!", Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(MainActivity.this, "Upload Failed!", Toast.LENGTH_SHORT).show();
}
});
}
}

You are getting that errror because your intent.getData is null. It happened to me too, your onActivityResult when using the take picture intent always brings the data as null. As a workaround I made the photoURI a global variable in the activity and onActivityResult called it again. It would be something like this:
First you declare the variable
Uri myPhotoUri = null;
Then, you initiate it in your dispatchTakePictureIntent function:
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
Log.e("MainActivity", "Error creating file", e);
}
if (photoFile != null) {
//you are adding initializing the uri
myPhotoUri = FileProvider.getUriForFile(this,
"com.example.android.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
}
}
}
And on your onActivityResult, you use that uri to call to your firebase function. It will now have the information necessary to upload it:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
progressDialog.setMessage("Uploading...");
progressDialog.show();
StorageReference filepath;
//you delete the Uri uri = data.getData();
filepath = storage.child("Photos").child(uri.getLastPathSegment());
//here you call it
filepath.putFile(myPhotoUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(MainActivity.this, "Upload Successful!", Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(MainActivity.this, "Upload Failed!", Toast.LENGTH_SHORT).show();
}
});
}
}

First check that you have permission for using the camera, then
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQ);
Then onActivityResult
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQ && resultCode == Activity.RESULT_OK) {
bitmap = (Bitmap) data.getExtras().get("data");
Bitmap.createScaledBitmap(bitmap, 150, 150, true);
}
}
then from bitmap to byte[]
public static byte[] getByteArrayFromBitmap(Bitmap bitmap) {
if(bitmap == null) return null;
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 50, byteArrayOutputStream);
return byteArrayOutputStream.toByteArray();
}
You can now do whatever you want with the bitmap or byte[]

Passing Image Captured to FilePathUri

I have problem to pass the Captured Image to the FilePathUri where the image will be stored and then uploaded to Firebase. I need to integrate them together cause the FilePathUri is always returning null.
Hope somebody can show me an Example with Code. Thanks
On-Create Method
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_takephoto);
// Assign FirebaseStorage instance to storageReference.
storageReference = FirebaseStorage.getInstance().getReference();
// Assign FirebaseDatabase instance with root database name.
databaseReference = FirebaseDatabase.getInstance().getReference(Database_Path);
//Assign ID'S to button.
ChooseButton = (Button)findViewById(R.id.ButtonChooseImage);
UploadButton = (Button)findViewById(R.id.ButtonUploadImage);
// Assign ID's to EditText.
ImageName = (EditText)findViewById(R.id.ImageNameEditText);
// Assign ID'S to image view.
SelectImage = (ImageView)findViewById(R.id.ShowImageView);
// Assigning Id to ProgressDialog.
progressDialog = new ProgressDialog(PhotoActivity.this);
// Adding click listener to Choose image button.
ChooseButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, FilePathUri);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
});
OnActivity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
// Line 1:
FilePathUri = data.getData();
// Line 2:
Bitmap photo = (Bitmap) data.getExtras().get("data");
SelectImage.setImageBitmap(photo);
ChooseButton.setText("Image Selected");
}
}
Uploading Image Part
// Creating UploadImageFileToFirebaseStorage method to upload image on storage.
public void UploadImageFileToFirebaseStorage() {
// Checking whether FilePathUri Is empty or not.
if (FilePathUri != null) {
// Setting progressDialog Title.
progressDialog.setTitle("Image is Uploading...");
// Showing progressDialog.
progressDialog.show();
// Creating second StorageReference.
StorageReference storageReference2nd = storageReference.child(Storage_Path + System.currentTimeMillis() + "." + FilePathUri);
// Adding addOnSuccessListener to second StorageReference.
storageReference2nd.putFile(FilePathUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
// Getting image name from EditText and store into string variable.
String TempImageName = ImageName.getText().toString().trim();
// Hiding the progressDialog after done uploading.
progressDialog.dismiss();
// Showing toast message after done uploading.
Toast.makeText(getApplicationContext(), "Image Uploaded Successfully ", Toast.LENGTH_LONG).show();
#SuppressWarnings("VisibleForTests")
ImageUploadInfo imageUploadInfo = new ImageUploadInfo(TempImageName, taskSnapshot.getDownloadUrl().toString());
// Getting image upload ID.
String ImageUploadId = databaseReference.push().getKey();
// Adding image upload id s child element into databaseReference.
databaseReference.child(ImageUploadId).setValue(imageUploadInfo);
}
})
// If something goes wrong .
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
// Hiding the progressDialog.
progressDialog.dismiss();
// Showing exception erro message.
Toast.makeText(PhotoActivity.this, exception.getMessage(), Toast.LENGTH_LONG).show();
}
})
// On progress change upload time.
.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
#Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
// Setting progressDialog Title.
progressDialog.setTitle("Image is Uploading...");
}
});
}
else {
Toast.makeText(PhotoActivity.this, "Please Select Image or Add Image Name", Toast.LENGTH_LONG).show();
}

How to Retrieve videos from Firebase in app?

I want to add videos in firebase storage and retrieve all upload videos in-app through recycler view with card view.
Please give some reference or source code for this.
I am trying this for uploading video in firebase it is successfully uploaded but I am unable to retrieve it.
Thanks in advance.
public class VideoUplod extends AppCompatActivity
{
private static final int RC_PDF_PICKER = 2;
private FirebaseStorage mFirebaseStorage;
private StorageReference mChatPDFStorageReference;
public static final int RC_SIGN_IN = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_video_uplod);
VideoView videoView =(VideoView)findViewById(R.id.image);
//Creating MediaController
MediaController mediaController= new MediaController(this);
mediaController.setAnchorView(videoView);
//specify the location of media file
Uri uri=Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/media/1.mp4");
//Setting MediaController and URI, then starting the videoView
videoView.setMediaController(mediaController);
videoView.setVideoURI(uri);
videoView.requestFocus();
videoView.start();
mFirebaseStorage =FirebaseStorage.getInstance();
mChatPDFStorageReference = mFirebaseStorage.getReference().child("Video");
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("video/*");
intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent, "Complete action using"), RC_PDF_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();
}
//for photo storage check
} else if (requestCode == RC_PDF_PICKER && resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
// Get a reference to store file at chat_photos/<FILENAME>
StorageReference photoRef = mChatPDFStorageReference.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
#SuppressWarnings("VisibleForTests") Uri downloadUrl = taskSnapshot.getDownloadUrl();
// Set the download URL to the message box so that the user can send it to the database
}
});
}
}
}

I'd take a look at:
Zero to App (video, source)
How to get an array with all pictures?
Firebase SDK for Cloud Storage docs
From the docs, it's pretty simple to download a file:
StorageReference videoRef = storageRef.child("videos/myvideo.mp4");
final long ONE_MEGABYTE = 1024 * 1024;
videoRef.getBytes(ONE_MEGABYTE).addOnSuccessListener(new OnSuccessListener<byte[]>() {
#Override
public void onSuccess(byte[] bytes) {
// Transform bytes to a video, play
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
// Handle any errors
}
});