[Fix] App crash when no handler (_messageHandler) for message from JS.

ruslanskorb · ruslanskorb · commit 68a37a2287e1 · 2014-08-05T19:28:21.000+03:00
diff --git a/WebViewJavascriptBridge/WebViewJavascriptBridge.m b/WebViewJavascriptBridge/WebViewJavascriptBridge.m
@@ -196,6 +196,10 @@ - (void)_flushMessageQueue {
                 }
             } else {
                 handler = _messageHandler;
+                if (!handler) {
+                    NSLog(@"WVJB Warning: No handler for message from JS: %@", message);
+                    return responseCallback(@{});
+                }
             }
             
             @try {

Original file line number	Diff line number	Diff line change
`@@ -196,6 +196,10 @@ - (void)_flushMessageQueue {`
`196`	`196`	`}`
`197`	`197`	`} else {`
`198`	`198`	`handler = _messageHandler;`
	`199`	`+ if (!handler) {`
	`200`	`+ NSLog(@"WVJB Warning: No handler for message from JS: %@", message);`
	`201`	`+ return responseCallback(@{});`
	`202`	`+ }`
`199`	`203`	`}`
`200`	`204`
`201`	`205`	`@try {`