Add iOS and Android Unity pause/resume functions

Author: Wesley Bos

android/src/main/java/com/reactnative/unity/view/UnityViewManager.java

@@ -19,6 +19,8 @@ public class UnityViewManager extends SimpleViewManager<UnityView> implements Li
     private static final String REACT_CLASS = "UnityView";
 
     public static final int COMMAND_POST_MESSAGE = 1;
+    public static final int COMMAND_PAUSE = 2;
+    public static final int COMMAND_RESUME = 3;
 
     private ReactApplicationContext context;
 
@@ -36,7 +38,9 @@ public String getName() {
     @Override
     public @Nullable Map<String, Integer> getCommandsMap() {
         return MapBuilder.of(
-                "postMessage", COMMAND_POST_MESSAGE
+                "postMessage", COMMAND_POST_MESSAGE,
+                "pause", COMMAND_PAUSE,
+                "resume", COMMAND_RESUME
         );
     }
 
@@ -49,6 +53,12 @@ public void receiveCommand(UnityView root, int commandId, @Nullable ReadableArra
                 String message = args.getString(2);
                 UnityUtils.postMessage(gameObject, methodName, message);
                 break;
+            case COMMAND_PAUSE:
+                UnityUtils.getPlayer().pause();
+                break;
+            case COMMAND_RESUME:
+                UnityUtils.getPlayer().resume();
+                break;                
         }
     }
 

ios/RNUnityViewManager.m

@@ -84,4 +84,14 @@ - (void)setBridge:(RCTBridge *)bridge {
     UnityPostMessage(gameObject, methodName, message);
 }
 
+RCT_EXPORT_METHOD(pause:(nonnull NSNumber *)reactTag)
+{
+    UnityPauseCommand();
+}
+
+RCT_EXPORT_METHOD(resume:(nonnull NSNumber *)reactTag)
+{
+    UnityResumeCommand();
+}
+
 @end

ios/UnityUtils.h

@@ -13,6 +13,10 @@ void InitUnity(void);
 
 void UnityPostMessage(NSString* gameObject, NSString* methodName, NSString* message);
 
+void UnityPauseCommand();
+
+void UnityResumeCommand();
+
 #ifdef __cplusplus
 } // extern "C"
 #endif

ios/UnityUtils.mm

@@ -62,6 +62,20 @@
     UnitySendMessage([gameObject UTF8String], [methodName UTF8String], [message UTF8String]);
 }
 
+extern "C" void UnityPauseCommand()
+{
+    dispatch_async(dispatch_get_main_queue(), ^{
+        UnityPause(1);
+    });
+}
+
+extern "C" void UnityResumeCommand()
+{
+    dispatch_async(dispatch_get_main_queue(), ^{
+        UnityPause(0);
+    });
+}
+
 @implementation UnityUtils
 
 static NSHashTable* mUnityEventListeners = [NSHashTable weakObjectsHashTable];

src/index.tsx

@@ -38,6 +38,28 @@ export default class UnityView extends React.Component<UnityViewProps> {
         );
     };
 
+    /**
+     * Pause the unity player
+     */
+    public pause() {
+        UIManager.dispatchViewManagerCommand(
+            this.getViewHandle(),
+            UIManager.UnityView.Commands.pause,
+            []
+        );
+    };
+
+    /**
+     * Resume the unity player
+     */
+    public resume() {
+        UIManager.dispatchViewManagerCommand(
+            this.getViewHandle(),
+            UIManager.UnityView.Commands.resume,
+            []
+        );
+    };
+
     /**
      * Send Message to UnityMessageManager.
      * @param message The message will post.