Preparing to support multi user. Use the database to store accounts' info. LoginActivity is successfully refactored. Any other features are unavailable for now.

1 files changed, 47 insertions, 0 deletions

diff --git a/app/src/main/java/Account/AccountViewModel.java b/app/src/main/java/Account/AccountViewModel.java
new file mode 100644
index 00000000..b649d9a7
--- /dev/null
+++ b/app/src/main/java/Account/AccountViewModel.java
@@ -0,0 +1,47 @@
+package Account;
+
+import android.app.Application;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+
+public class AccountViewModel extends AndroidViewModel {
+    private AccountRepository mAccountRepository;
+    private LiveData<Account> mAccountLiveData;
+
+    public AccountViewModel(Application application, String id) {
+        super(application);
+        mAccountRepository = new AccountRepository(application, id);
+        mAccountLiveData = mAccountRepository.getAccountLiveData();
+    }
+
+    public LiveData<Account> getAccountLiveData() {
+        return mAccountLiveData;
+    }
+
+    public void insert(Account userData) {
+        mAccountRepository.insert(userData);
+    }
+
+    public static class Factory extends ViewModelProvider.NewInstanceFactory {
+
+        @NonNull
+        private final Application mApplication;
+
+        private final String userName;
+
+        public Factory(@NonNull Application application, String userName) {
+            mApplication = application;
+            this.userName = userName;
+        }
+
+        @Override
+        public <T extends ViewModel> T create(Class<T> modelClass) {
+            //noinspection unchecked
+            return (T) new AccountViewModel(mApplication, userName);
+        }
+    }
+}