使用Firebase更改用户个人资料图片

Question

这是我的用于将个人资料图片更新为firebase的代码，但它一直显示出问题，并且永远不会更新个人资料图片，因为从外部存储设备或相机中获取图片后，它会更新

private void uploadImage(){
                final ProgressDialog progressDialog =new ProgressDialog(this);
                progressDialog.setMessage("Uploading");
                progressDialog.show();
                if (mImageUri!=null){
                    final StorageReference filereference=storageReference.child(System.currentTimeMillis()+"."+getFileExtension(mImageUri));
                    uploadTask=filereference.putFile(mImageUri);
                    uploadTask.continueWithTask((Continuation) task -> {
                        if (!task.isSuccessful()){
                            throw task.getException();
                        }
                        return filereference.getDownloadUrl();
                    }).addOnCompleteListener((OnCompleteListener<Uri>) task -> {
                        if (task.isSuccessful()){
                            Uri downloadUri=task.getResult();
                            String myurl=downloadUri.toString();

                            DatabaseReference reference=FirebaseDatabase.getInstance().getReference("users").child(firebaseUser.getUid());
                            HashMap<String,Object> hashMap=new HashMap<>();
                            hashMap.put("imageurl",""+myurl);
                            reference.updateChildren(hashMap);
                            progressDialog.dismiss();
                        }else {
                            snackbar= Snackbar.make(view," failed",Snackbar.LENGTH_LONG);
                            setSnackbar();
                        }

                    }).addOnFailureListener(e -> {
                        snackbar= Snackbar.make(view,e.getMessage(),Snackbar.LENGTH_LONG);
                        setSnackbar();
                    });

                }
                else {
                    snackbar= Snackbar.make(view,"no Image selected",Snackbar.LENGTH_LONG);
                    setSnackbar();
                }
            }

这是我要求用户的外部存储权限

的方式

 public boolean checkPermissionREAD_EXTERNAL_STORAGE(
        final Context context) {
    int currentAPIVersion = Build.VERSION.SDK_INT;
    if (currentAPIVersion >= android.os.Build.VERSION_CODES.M) {
        if (ContextCompat.checkSelfPermission(context,
                Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale((EditProfileActivity) context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
                showDialog("External storage", context,
                        Manifest.permission.READ_EXTERNAL_STORAGE);

            } else {
                ActivityCompat
                        .requestPermissions(
                                (EditProfileActivity) context,
                                new String[] { Manifest.permission.READ_EXTERNAL_STORAGE },
                                MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
            }
            return false;
        } else {
            return true;
        }

    } else {
        return true;
    }
}
public void showDialog(final String msg, final Context context,
                       final String permission) {
    AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
    alertBuilder.setCancelable(true);
    alertBuilder.setTitle("Permission necessary");
    alertBuilder.setMessage(msg + " permission is necessary");
    alertBuilder.setPositiveButton(android.R.string.yes,
            (dialog, which) -> ActivityCompat.requestPermissions((EditProfileActivity) context,
                    new String[] { permission },
                    MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE));
    AlertDialog alert = alertBuilder.create();
    alert.show();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE:
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // do your stuff



            } else {
                Toast.makeText(EditProfileActivity.this, "GET_ACCOUNTS Denied",
                        Toast.LENGTH_SHORT).show();
            }
            break;
        default:
            super.onRequestPermissionsResult(requestCode, permissions,
                    grantResults);
    }
}

这是“活动结果”的操作方式，这是它显示错误的地方。

 @Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE && resultCode==RESULT_OK ) {
        // do your stuff..

        CropImage.ActivityResult result=CropImage.getActivityResult(data);
        mImageUri = result.getUri();
        uploadImage();

    }else {
        snackbar= Snackbar.make(view,"Something gone wrong",Snackbar.LENGTH_LONG);
        setSnackbar();
    }
}