невозможно загрузить одно изображение с помощью EXTRA_ALLOW_MUTLIPLE ANDROID

Question

Я не могу загрузить одно изображение, используя EXTRA_ALLOW_MULTPLE, но я могу загрузить несколько изображений, используя этот метод.

это должно позволить мне загружать одно или несколько изображений.

загружая код этой функции для справки ниже:

Это главный 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=".function.albums.AlbumMediaListActivity">

<GridView
    android:id="@+id/fileList_gv"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:numColumns="3"/>

<android.support.design.widget.FloatingActionButton
    android:id="@+id/addPhotos_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentRight="true"
    android:contentDescription="+"
    android:backgroundTint="@color/colorPrimaryDark"
    android:src="@android:drawable/ic_input_add"
    android:tint="@android:color/white"
    android:layout_margin="16dp" />

</RelativeLayout>

это Java Код:

package com.example.thakirni.function.albums;

import android.app.ProgressDialog;
import android.content.ClipData;
import android.content.Intent;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.GridView;
import android.widget.Toast;

import com.example.thakirni.R;
import com.example.thakirni.model.AlbumMedia;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
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 com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;

import java.util.ArrayList;
import java.util.UUID;

public class AlbumMediaListActivity extends AppCompatActivity {

private FloatingActionButton addPhotos_btn;
private int CODE_MULTIPLE_IMG_GALLERY = 2;

private ArrayList<Uri> ImageList = new ArrayList<>();
private Uri imageUri;
private ProgressDialog progressDialog;

private String albumID, albumThumbnail;

String url;

private GridView fileList_gv;
private ArrayList<AlbumMedia> albumMediaArrayList;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_album_media_list);

    // getting values from previous activity
    url = "";
    Intent intent = getIntent();
    albumID = intent.getStringExtra("albumID");
    albumThumbnail = intent.getStringExtra("albumThumbnail");

    // finding XML Reference of activity
    addPhotos_btn = findViewById(R.id.addPhotos_btn);
    fileList_gv = findViewById(R.id.fileList_gv);

    /*************************************************************/
    // initializing ProgressDialog and setting its message
    progressDialog = new ProgressDialog(AlbumMediaListActivity.this);
    progressDialog.setMessage("Uploading Files Please Wait......");

    // Printing all images from Album
    printAlbumFromFirebase();

    // This button will start Gallery Screen and allow user to select files 
and will result in uploading them to firebase
    addPhotos_btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent();
            intent.setType("*/*"); // this means all types of files in 
gallery should be visible
            intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true); // allow to 
select multiple files together
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(Intent.createChooser(intent, "Select 
Multiple Files"), CODE_MULTIPLE_IMG_GALLERY);
        }
    });

}

// This Function Will print all Images and display in album
private void printAlbumFromFirebase() {
    progressDialog.setMessage("Loading Album Please Wait!...");
    progressDialog.show();
    // Write a message to the database
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference fileRef = 
database.getReference("albumMedia").child(albumID);

    fileRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            if(dataSnapshot.getValue() != null) {
                albumMediaArrayList = new ArrayList<>();
                for (DataSnapshot postSnapshot : 
dataSnapshot.getChildren()) {

                    AlbumMedia albumMedia = 
postSnapshot.getValue(AlbumMedia.class);
                    albumMediaArrayList.add(albumMedia);
                }
                fileList_gv.setAdapter(new 
AlbumMediaListAdapter(AlbumMediaListActivity.this, albumMediaArrayList));
            }
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });
    progressDialog.cancel();
}

// This function will return Links of files that will be uploaded to 
Firebase and then run openUploadDialog Function
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent 
data) {
    super.onActivityResult(requestCode, resultCode, data);

    if(requestCode == CODE_MULTIPLE_IMG_GALLERY && resultCode == RESULT_OK) 
{
        ClipData clipData = data.getClipData();

        if(data.getClipData() != null){
            // getting count of how many images selected
            int countClipData = data.getClipData().getItemCount();

            int currentImageSelect = 0;
            // running loop to increment images and add them to ArrayList
            while(currentImageSelect < countClipData)
            {
                imageUri = 
data.getClipData().getItemAt(currentImageSelect).getUri();
                ImageList.add(imageUri);

                currentImageSelect += 1;
            }

        }
        // Opening Loading
        openUploadDialog();

    }
}

// this will upload images to Firebase Storage and will run the 
uploadFilesPathToFirebase function
private void openUploadDialog() {
    // Showing Progress Dialog
    progressDialog.show();

    // Running Loop to upload multiple Images 1 by 1
    for(int i=0; i < ImageList.size(); i++)
    {
        StorageReference ImageFolder = 
FirebaseStorage.getInstance().getReference().child("Files/"+ albumID + "/" 
+ 
UUID.randomUUID().toString());
        ImageFolder.putFile(ImageList.get(i)).addOnSuccessListener(new 
OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                // Getting URL of each Image
                url = String.valueOf(taskSnapshot.getDownloadUrl());
                uploadFilesPathToFirebase(url);
            }
        }).addOnCompleteListener(new 
OnCompleteListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> 
task) {
                progressDialog.dismiss();
            }
        });
    }

    Toast.makeText(AlbumMediaListActivity.this, "Files Uploaded 
Successfully", Toast.LENGTH_SHORT).show();
}

// this function will upload values to firebase and update album Cover 
using 
updateAlbumCover Function
private void uploadFilesPathToFirebase(final String downloadUrl) {

    // Write a message to the database
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference photoRef = database.getReference("albumMedia");

    // Setting Firebase Values
    AlbumMedia albumMedia = new AlbumMedia();
    albumMedia.setFileUrl(downloadUrl);

    // this will add File Information to Firebase

photoRef.child(albumID).child(photoRef.push().getKey()).
setValue(albumMedia).ad 
dOnSuccessListener(new OnSuccessListener<Void>() {
        @Override
        public void onSuccess(Void aVoid) {
            if(albumThumbnail.equalsIgnoreCase(""))
            {
                updateAlbumCover(downloadUrl);
            }
        }
    });

}

// this function will update albumCover from UploadFilesPathToFirebase 
function
private void updateAlbumCover(String thumArt) {
    FirebaseDatabase database2 = FirebaseDatabase.getInstance();
    DatabaseReference albumRef = 
database2.getReference("album").child(albumID);
    // this will update albumThumbnail
    albumRef.child("albumThumbnail").setValue(thumArt);
}
}