在Android中上传多个文件到firebase firestore

FirebaseFirestore db = FirebaseFirestore.getInstance();

Uri fileUri = Uri.fromFile(new File(filePath));
StorageReference storageRef = FirebaseStorage.getInstance().getReference();
StorageReference fileRef = storageRef.child("files/" + uniqueFileName);
UploadTask uploadTask = fileRef.putFile(fileUri);

uploadTask.addOnProgressListener(taskSnapshot -> {
    double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
    // 更新上传进度
}).addOnSuccessListener(taskSnapshot -> {
    // 文件上传成功
    // 获取文件的下载URL
    fileRef.getDownloadUrl().addOnSuccessListener(uri -> {
        String downloadUrl = uri.toString();
        // 将下载URL保存到Firestore数据库中
        Map<String, Object> fileData = new HashMap<>();
        fileData.put("fileName", uniqueFileName);
        fileData.put("downloadUrl", downloadUrl);
        db.collection("files").add(fileData)
                .addOnSuccessListener(documentReference -> {
                    // 文件信息保存成功
                })
                .addOnFailureListener(e -> {
                    // 文件信息保存失败
                });
    });
}).addOnFailureListener(e -> {
    // 文件上传失败
});