java - 如何在 Firebase 中添加图像列表？

Question

我想在 firebase 中上传图像列表，但在 firebase 上传成功监听器中不会在 OnSuccessListener 上添加图像列表。

尝试过 我在 add onSuccessListener 类之外添加字符串值，它可以工作，并且我尝试记录它也可以工作的 url。但它不会在 OnSuccessListener 的 arrayList 中添加字符串值。谢谢您的帮助。

主要代码

 public void UploadImage() {
    if (isUserSelected != null) {
        progressDialog.setTitle("Image is Uploading...");
        Log.d(TAG, "UploadImage: uploading");
        progressDialog.show();
        Log.d(TAG, "UploadImage:  after progress bar");
        for (int i = 0; i < multipleFileUploads.size(); i++) {
            Log.d(TAG, "UploadImage: " + i);
            final StorageReference storageReference2 = storageReference.child(System.currentTimeMillis() + "." + GetFileExtension(multipleFileUploads.get(i)));
            storageReference2.putFile(multipleFileUploads.get(i))
                    .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                        @Override
                        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                            Log.d(TAG, "onSuccess: ");
                            progressDialog.dismiss();
                            Toast.makeText(getApplicationContext(), "Image Uploaded Successfully ", Toast.LENGTH_LONG).show();
                            storageReference2.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                                @Override
                                public void onSuccess(Uri uri) {
                                    Log.d(TAG, "onSuccess: uri " + uri.toString());
                                    imagelist.add(uri.toString());

                                }
                            });
                        }
                    }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    Log.d(TAG, "onFailure: " + e.getMessage());
                }
            }).addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                    Log.d(TAG, "onProgress: " + taskSnapshot.getBytesTransferred());
                    Log.d(TAG, "onProgress: " + taskSnapshot.getTotalByteCount());
                }
            }).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
                    Log.d(TAG, "onComplete: " + task.getException());
                }
            });
        }
        imageList.add("custom list");
        uploadinfo imageUploadInfo = new uploadinfo(txtdata.getText().toString(), txtData1.getText().toString(), imageList.toString());
        String ImageUploadId = databaseReference.push().getKey();
        databaseReference.child(ImageUploadId).setValue(imageUploadInfo);


    } else {
        Toast.makeText(uploadimg1.this, "Please Select Image or Add Image Name", Toast.LENGTH_LONG).show();

    }

Firebase 的 POJO 代码

public class uploadinfo {
public String imageName;
public String imageName1;
public String imageListString;

public uploadinfo(String imageName, String imageName1, String imageListString) {
    this.imageName = imageName;
    this.imageName1 = imageName1;
    this.imageListString = imageListString;
}

public String getImageName() {
    return imageName;
}

public void setImageName(String imageName) {
    this.imageName = imageName;
}

public String getImageName1() {
    return imageName1;
}

public void setImageName1(String imageName1) {
    this.imageName1 = imageName1;
}

public String getImageListString() {
    return imageListString;
}

public void setImageListString(String imageListString) {
    this.imageListString = imageListString;
    }
}

在 Firebase 中

Answer 1

问题可能出在您的模型中。在 firebase 中，顺序为 imageListString、imageName、imageName1。但在构造函数的模型中，您得到了 String imageName、String imageName1、String imageListString。同时，我不确定在将其发送到 Firebase 之前如何生成您创建的列表。