Question

如果您有类似这样的课程

，是否可能

type

从Android首先上传图片，此图片保存在firebase存储中。在下一步中，您将使用上次上传的图像发布您的姓名，年龄和存储空间，并将此图像与姓名和年龄相关联

例如

姓名：'John'

年龄：50

url：firebase url image

Answer 1

创建模型类

   public class Model implements Serializable {
   public String name;
   public String age;
   public String photoUrl;

   public Model (){
   }

public Model (String name, String age,String photoUrl){
   this.name= name;
   this.age= age;
   this.photoUrl= photoUrl;
}
}

在firebase存储中插入图片，

  UploadTask uploadTask;
  uploadTask = imagePathReference.putBytes(dataNew);
  uploadTask.addOnFailureListener(new OnFailureListener() {
  @Override
  public void onFailure(@NonNull Exception exception) {
   Log.e("firebase ", " addOnFailureListener ");
  }
 }).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {

 @Override
 public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
 //taskSnapShot u will get the download url.
 }
 });

保存下载网址，然后在获取姓名和年龄后的下一步

    Model user = new Model (name,age,url);

此对象（用户）中将包含所有数据。现在将对象保存在实时firebase表中。

Answer 2

是。您只需使用Firebase Storage上传图片，在回调中即可获得该图片的可下载网址。然后将所有值放在自定义对象中，并将该对象保存在Firebase的RealTime数据库中。

Answer 3

我已经使用过这种类型的任务

根据您的要求尝试此代码，

  StorageReference riversRef = mStorageRef.child("posts/images" + userId + "/" + String.valueOf(System.currentTimeMillis()) + ".jpg");
                            riversRef.putBytes(bytes)
                                    .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                                        @Override
                                        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                                            // Get a URL to the uploaded content
                                            Uri downloadUrl = taskSnapshot.getDownloadUrl();
                                            Log.d("downloadUrl", "" + downloadUrl);

                                            writeNewPost(userId, user.getUsername(), user.getProfilePic(), String.valueOf(downloadUrl), body);
                                        }
                                    })
                                    .addOnFailureListener(new OnFailureListener() {
                                        @Override
                                        public void onFailure(@NonNull Exception exception) {
                                            // Handle unsuccessful uploads
                                            // ...

                                        }
                                    }).addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
                                @Override
                                public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                                    //calculating progress percentage
                                    double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();

                                    //displaying percentage in progress dialog
                                }
                            });

和 writeNewPost 功能如下 -

private void writeNewPost(String userId, String username, String userImage, String img, String body) {
    // Create new post at /user-posts/$userid/$postid and at
    // /posts/$postid simultaneously
    String key = mDatabase.child(KeyTAG.TAG_POSTS).push().getKey();
    Post post = new Post(userId, username, body, img, userImage, key, DateTimeUtil.GetUTCdatetimeAsDate(),"image","noThumb");
    Map<String, Object> postValues = post.toMap();

    Map<String, Object> childUpdates = new HashMap<>();
    childUpdates.put("/" + KeyTAG.TAG_POSTS + "/" + key, postValues);

    mDatabase.updateChildren(childUpdates);
    mDialog.hide();

}

Firebase实时数据库，链接同一对象中的图像

3 个答案: