Make all methods static

Author: kengoon

sjfirebase/src/main/java/com/simplejnius/sjfirebase/SJFirebaseAuthEmail.java

@@ -7,18 +7,18 @@
 
 public class SJFirebaseAuthEmail {
     private static final String TAG = "EmailPassword";
-    private FirebaseAuth m_auth;
+    private static FirebaseAuth m_auth;
 
-    public FirebaseAuth get_instance() {
+    public static FirebaseAuth get_instance() {
         m_auth = FirebaseAuth.getInstance();
         return m_auth;
     }
 
-    public String get_uid() {
+    public static String get_uid() {
         return m_auth.getUid();
     }
 
-    public boolean check_user_signed_in() {
+    public static boolean check_user_signed_in() {
         // Check if user is signed in (non-null) and update UI accordingly.
         FirebaseUser current_user = m_auth.getCurrentUser();
         if(current_user != null){
@@ -28,13 +28,13 @@ public boolean check_user_signed_in() {
         return false;
     }
 
-    public void create_user_with_email_and_password(
+    public static void create_user_with_email_and_password(
             String email, String password, OnCompleteListener<AuthResult> callback) {
         m_auth.createUserWithEmailAndPassword(email, password)
                 .addOnCompleteListener(callback);
     }
 
-    public void sign_in_with_email_and_password(
+    public static void sign_in_with_email_and_password(
             String email, String password, OnCompleteListener<AuthResult> callback) {
         m_auth.signInWithEmailAndPassword(email, password)
                 .addOnCompleteListener(callback);

sjfirebase/src/main/java/com/simplejnius/sjfirebase/SJFirebaseDatabase.java

@@ -3,7 +3,7 @@
 import com.google.firebase.database.FirebaseDatabase;
 
 public class SJFirebaseDatabase {
-    public FirebaseDatabase get_db() {
+    public static FirebaseDatabase get_db() {
         return FirebaseDatabase.getInstance();
     }
 }

sjfirebase/src/main/java/com/simplejnius/sjfirebase/SJFirebaseFirestore.java

@@ -3,7 +3,7 @@
 import com.google.firebase.firestore.FirebaseFirestore;
 
 public class SJFirebaseFirestore {
-    public FirebaseFirestore get_db() {
+    public static FirebaseFirestore get_db() {
         return FirebaseFirestore.getInstance();
     }
 }

sjfirebase/src/main/java/com/simplejnius/sjfirebase/SJFirebaseUser.java

@@ -12,11 +12,11 @@
 
 public class SJFirebaseUser {
 
-    public FirebaseUser get_current_user() {
+    public static FirebaseUser get_current_user() {
         return FirebaseAuth.getInstance().getCurrentUser();
     }
 
-    public void update_profile(String name, String photo_url, OnCompleteListener<Void> callback) {
+    public static void update_profile(String name, String photo_url, OnCompleteListener<Void> callback) {
         // [START update_profile]
         UserProfileChangeRequest.Builder profile_updates = new UserProfileChangeRequest.Builder();
         UserProfileChangeRequest user_profile_change_request;
@@ -36,19 +36,19 @@ public void update_profile(String name, String photo_url, OnCompleteListener<Voi
         // [END update_profile]
     }
 
-    public void update_email(String email, OnCompleteListener<Void> callback) {
+    public static void update_email(String email, OnCompleteListener<Void> callback) {
         get_current_user().updateEmail(email)
                 .addOnCompleteListener(callback);
     }
 
-    public void send_email_verification(OnCompleteListener<Void> callback) {
+    public static void send_email_verification(OnCompleteListener<Void> callback) {
         // [START send_email_verification]
         get_current_user().sendEmailVerification()
                 .addOnCompleteListener(callback);
         // [END send_email_verification]
     }
 
-    public void send_email_verification_with_continue_url(
+    public static void send_email_verification_with_continue_url(
             String app_package_name, String url, OnCompleteListener<Void> callback) {
         // [START send_email_verification_with_continue_url]
         ActionCodeSettings actionCodeSettings = ActionCodeSettings.newBuilder()
@@ -62,7 +62,7 @@ public void send_email_verification_with_continue_url(
                 .addOnCompleteListener(callback);
     }
 
-    public void send_password_reset_email(String email, OnCompleteListener<Void> callback) {
+    public static void send_password_reset_email(String email, OnCompleteListener<Void> callback) {
         // [START send_password_reset]
         FirebaseAuth auth = FirebaseAuth.getInstance();
 
@@ -71,15 +71,15 @@ public void send_password_reset_email(String email, OnCompleteListener<Void> cal
         // [END send_password_reset]
     }
 
-    public void deleteUser(OnCompleteListener<Void> callback) {
+    public static void deleteUser(OnCompleteListener<Void> callback) {
         // [START delete_user]
 
         get_current_user().delete()
                 .addOnCompleteListener(callback);
         // [END delete_user]
     }
 
-    public void reauthenticate(String email, String password, OnCompleteListener<Void> callback) {
+    public static void reauthenticate(String email, String password, OnCompleteListener<Void> callback) {
         // [START reauthenticate]
 
         // Get auth credentials from the user for re-authentication. The example below shows