Repository
https://github.com/princessdharmy/triviums
History
Fixes
One of the major problems Android Developers encounter is App Crash with some Exceptions. In order to tackle this problem, here is my implementation:
- Firstly, I added a NetworkBoundResource class
FirestoreResultResponse.javato encapsulate both the data and state
public class FirestoreResultResponse {
Map<String, Object> data;
String error;
public FirestoreResultResponse() {
}
public FirestoreResultResponse(Map<String, Object> data, String error) {
this.data = data;
this.error = error;
}
}
- Secondly, I had some issues while fetching data from Firestore; once there is a bad internet connection, the app crashes. So, in order to avoid the FirebaseFirestoreException, I used a try-catch in the
StageRepository.javaclass :
private void fetchProgress(String categoryName, ProgressCallback callback) {
...
docRef.get().addOnCompleteListener(task -> {
if (task.isSuccessful()) {
}
try {
callback.onCallback(new FirestoreResultResponse(task.getResult().getData(), null));
} catch (Exception e) {
if (e instanceof FirebaseFirestoreException) {
callback.onCallback(new FirestoreResultResponse(null, e.getLocalizedMessage()));
}
e.printStackTrace();
}
})
.addOnFailureListener(error -> {
callback.onCallback(new FirestoreResultResponse(null, error.toString()));
});
}
New Features
- Show Users
As stated in the roadmap of my previous post, it's somewhat interesting to know how many people are playing the game you are involved in. So, I decided to get and display all users that are using the app or playing the game.
Implementation
- This code snippet fetches all the users in the database - Firestore in the
LeaderboardRepository.java
private void fetchUsers(UserCallback callback){
CollectionReference collection = firestore.collection("users");
collection.get().addOnCompleteListener(task -> {
if (task.isSuccessful()) {
document = task.getResult().getDocuments();
}
try {
callback.onCallback(document);
} catch (Exception e) {
if (e instanceof FirebaseFirestoreException) {
}
e.printStackTrace();
}
})
.addOnFailureListener(error -> {
});
}
- The
LeaderboardFragment.javaclass gets the user data and display
public void getUsers() {
viewModel.getUsers().observe(getViewLifecycleOwner(), response -> {
binding.loader.setVisibility(View.GONE);
binding.peopleRecyclerview.setVisibility(View.VISIBLE);
if (response != null) {
adapter.updateData(response);
}
});
}
Important resources
Roadmap
- Leaderboard implementation:
Display all users
Add users to compete
Remove users from competition - Display of users' quiz achievements
Thank you for your contribution. A nice little update to the project and its good to see you are continually progressing with the app. Few thoughts :
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[utopian-moderator]
@codingdefined thank you for your review and comments.
I would like to comment on your thoughts:
I am saying that since you are using the full path as C:......, its better to not use like this and usr a relative path.
Alright thanks. Noted!
Thank you for your review, @codingdefined! Keep up the good work!
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