Question

我正在尝试在Firebase实时数据库上保存一些数据，并且不断收到重复的字段

我试图更改模型，但没有任何改变

submitVideoButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
    String locationName;
    locationName = mLocationSpinnerName;
            if(!locationInput.getText().toString().equals("")){
                locationName = locationInput.getText().toString();
            }

            LocationData tompkins = new LocationData(locationName, 30, 
 31);


            String userid = mFirebaseUser.getEmail().substring(0, 
mFirebaseUser.getEmail().indexOf("@"));
            String cleanUserId = userid.replaceAll("\\W", "");
            updateUserInfo(cleanUserId, mFirebaseUser.getEmail(), 
"nsaofdhiqo3", tompkins);
        }
    });

}

 private void updateUserInfo(String userId, String email, String videoId, 
 LocationData location) {
    VideoEntry videoEntry = new VideoEntry(videoId, location);
    UserData user = new UserData(email, videoEntry);

    mDatabaseRef.child("users").child(userId).setValue(user);
 }

VideoEntry.Java

   public class VideoEntry {
    public String text;
    public String mVideoId;
    public LocationData mLocationData;

    public VideoEntry() {}

    public VideoEntry(String text, String videoId) {
        this.text = text;
        mVideoId = videoId;
    }

    public VideoEntry(String videoId, LocationData locationData) {
        mVideoId = videoId;
        mLocationData = locationData;
    }

    public String getText() {
        return text;
    }

    public String getVideoId() {
        return mVideoId;
    }
}

UserData.Java

public class UserData {

    public String mName;
    public String mVideoId; //TO BE REMOVED
    public LocationData mLocationData;
    public ArrayList<VideoEntry> mVideoEntries;
    public VideoEntry mVideoEntry; //TO BE REMOVED

    public UserData(){}

    public UserData(String name){
        mName = name;
    }

    public UserData(String name, String videoId, LocationData locationData){
        mName = name;
        mVideoId = videoId;
        mLocationData = locationData;
    }
    public UserData(String name, String videoId, LocationData locationData, ArrayList<VideoEntry> videoEntries){
        mName = name;
        mVideoId = videoId;
        mLocationData = locationData;
        mVideoEntries = videoEntries;
    }

    public UserData(String name, VideoEntry videoEntry){
        mName = name;
        mVideoEntry = videoEntry;
    }

    public UserData(String name, VideoEntry videoEntry, LocationData locationData){
        mName = name;
        mVideoEntry = videoEntry;
        mLocationData = locationData;
    }

}

LocationData.java

public class LocationData {

    public String mName;
    public double mLongitude;
    public double mLatitude;

    public LocationData(){}

    public LocationData(String name, double longitude, double latitude) {
        mName = name;
        mLongitude = longitude;
        mLatitude = latitude;
    }
}

我只是想拥有一个一个字段，而不是两个videoID（mVideoId和videoID），我想这可能是Java“陷阱”吗？

Answer 1

Firebase默认情况下会序列化/反序列化 public 字段和“属性”（由JavaBean标准getter和setter标识）。

将您的成员字段标记为私有字段应确保它们不会被写入数据库：

private String mVideoId;

或者，您也可以将公共领域或获取者/设置者标记为@Exclude：

@Exclude public String mVideoId;

双场火力基地混乱

1 个答案: