fix coding style.

app/src/main/java/chat/rocket/android/LaunchUtil.java

@@ -10,6 +10,9 @@ import chat.rocket.android.activity.ServerConfigActivity;
  */
 public class LaunchUtil {
 
+  /**
+   * launch AddServerActivity with proper flags.
+   */
   public static void showAddServerActivity(Context context) {
     Intent intent = new Intent(context, AddServerActivity.class);
     intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_CLEAR_TOP);

app/src/main/java/chat/rocket/android/RocketChatCache.java

@@ -8,6 +8,10 @@ import android.content.SharedPreferences;
  */
 public class RocketChatCache {
   public static final String KEY_SELECTED_SERVER_CONFIG_ID = "selectedServerConfigId";
+
+  /**
+   * get SharedPreference instance for RocketChat application cache.
+   */
   public static SharedPreferences get(Context context) {
     return context.getSharedPreferences("cache", Context.MODE_PRIVATE);
   }

app/src/main/java/chat/rocket/android/activity/AbstractAuthedActivity.java

@@ -24,8 +24,8 @@ abstract class AbstractAuthedActivity extends AbstractFragmentActivity {
   protected String serverConfigId;
 
   SharedPreferences.OnSharedPreferenceChangeListener preferenceChangeListener =
-      (sharedPreferences, s) -> {
-        if (RocketChatCache.KEY_SELECTED_SERVER_CONFIG_ID.equals(s)) {
+      (sharedPreferences, key) -> {
+        if (RocketChatCache.KEY_SELECTED_SERVER_CONFIG_ID.equals(key)) {
           updateServerConfigIdIfNeeded(sharedPreferences);
         }
       };

app/src/main/java/chat/rocket/android/model/ServerConfig.java

@@ -75,7 +75,10 @@ public class ServerConfig extends RealmObject {
         .continueWith(new LogcatIfError());
   }
 
-  public static Task<Void> setState(final String serverConfigId, int state) {
+  /**
+   * Update the state of the ServerConfig with serverConfigId.
+   */
+  public static Task<Void> updateState(final String serverConfigId, int state) {
     return RealmStore.getDefault().executeTransaction(realm -> {
       ServerConfig config =
           realm.where(ServerConfig.class).equalTo("serverConfigId", serverConfigId).findFirst();

app/src/main/java/chat/rocket/android/service/RocketChatService.java

@@ -113,16 +113,16 @@ public class RocketChatService extends Service {
   private Task<RocketChatWebSocketThread> findOrCreateWebSocketThread(final ServerConfig config) {
     final String serverConfigId = config.getServerConfigId();
     if (webSocketThreads.containsKey(serverConfigId)) {
-      return ServerConfig.setState(serverConfigId, ServerConfig.STATE_CONNECTED)
+      return ServerConfig.updateState(serverConfigId, ServerConfig.STATE_CONNECTED)
           .onSuccessTask(_task -> Task.forResult(webSocketThreads.get(serverConfigId)));
     } else {
-      return ServerConfig.setState(serverConfigId, ServerConfig.STATE_CONNECTING)
+      return ServerConfig.updateState(serverConfigId, ServerConfig.STATE_CONNECTING)
           .onSuccessTask(_task -> {
             webSocketThreads.put(serverConfigId, null);
             return RocketChatWebSocketThread.getStarted(getApplicationContext(), config);
           })
           .onSuccessTask(task ->
-              ServerConfig.setState(serverConfigId, ServerConfig.STATE_CONNECTED)
+              ServerConfig.updateState(serverConfigId, ServerConfig.STATE_CONNECTED)
                   .onSuccessTask(_task -> task))
           .onSuccessTask(task -> {
             webSocketThreads.put(serverConfigId, task.getResult());

app/src/main/java/chat/rocket/android/service/RocketChatWebSocketThread.java

@@ -84,7 +84,8 @@ public class RocketChatWebSocketThread extends HandlerThread {
 
   private void forceInvalidateTokens() {
     serverConfigRealm.executeTransaction(realm -> {
-      Session session = realm.where(Session.class).equalTo("sessionId", Session.DEFAULT_ID).findFirst();
+      Session session = realm.where(Session.class)
+          .equalTo("sessionId", Session.DEFAULT_ID).findFirst();
       if (session != null
           && !TextUtils.isEmpty(session.getToken())
           && (session.isTokenVerified() || !TextUtils.isEmpty(session.getError()))) {

app/src/main/java/chat/rocket/android/service/observer/MethodCallObserver.java

@@ -19,6 +19,7 @@ import org.json.JSONObject;
 public class MethodCallObserver extends AbstractModelObserver<MethodCall> {
 
   private String prevHash;
+
   /**
    * constructor.
    */
@@ -99,8 +100,7 @@ public class MethodCallObserver extends AbstractModelObserver<MethodCall> {
                   .put("methodCallId", methodCallId)
                   .put("syncstate", SyncState.SYNCED)
                   .put("resultJson", json));
-                })
-            )
+            }))
     ).continueWithTask(task -> {
       if (task.isFaulted()) {
         return realmHelper.executeTransaction(realm -> {