模特课程:
@IgnoreExtraProperties
public class Points {
public String score;
public Points(){
}
public Points(String score) {
this.score = score;
}
public String getScore() {
return score;
}
public void setScore(String score) {
this.score = score;
}
}
更新代码:
private void updateUser(String name) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (!name.equals("")) {
dbRefer.child("User").child(user.getUid()).child("score").setValue(name);
Toast.makeText(this, "update Done", Toast.LENGTH_SHORT).show();
}
}
检索代码:
private void addUserChangeListener() {
final FirebaseUser getData = firebaseAuth.getCurrentUser();
// User data change listener
dbRefer.child("User").child(getData.getUid()).child("score").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Points user = dataSnapshot.getValue(Points.class);
Toast.makeText(GameActivity.this, "Retrieved Data is: " + getData, Toast.LENGTH_SHORT).show();
// Check for null
if (user == null) {
Log.e(TAG, "User data is null!");
return;
}
Log.e(TAG, "User data is changed!" + user.getScore());
// Display newly updated name and email
mTvShowData.setText(user.getScore());
// clear edit text
mTxtEdtData.setText("");
toggleButton();
}
@Override
public void onCancelled(DatabaseError databaseError) {
Toast.makeText(GameActivity.this, "Can't Get data", Toast.LENGTH_SHORT).show();
}
});
}
更新代码正在运行,我现在面临的是检索部分,我似乎无法从我的数据库中获取数据。需要帮助和指导,谢谢。
答案 0 :(得分:0)
通常情况下,我会像你一样提取信息,作为对象,但是因为你只提取一条信息,而不是创建一个点对象而且所有这些我只需手动拉动并放置它。
dbRefer.child("User").child(getData.getUid()).addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String name = (String) dataSnapshot.child("score").getValue();
mTvShowData.setText(name);