* [ios]  check whether the WXDebugLoggerBridge class is existed

Project: http://git-wip-us.apache.org/repos/asf/incubator-weex/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-weex/commit/9b024080
Tree: http://git-wip-us.apache.org/repos/asf/incubator-weex/tree/9b024080
Diff: http://git-wip-us.apache.org/repos/asf/incubator-weex/diff/9b024080

Branch: refs/heads/0.16-dev
Commit: 9b024080ac60c8fbf4c06b157044c72d503c0e87
Parents: 4d122d4
Author: acton393 <[email protected]>
Authored: Fri Jul 21 16:45:17 2017 +0800
Committer: acton393 <[email protected]>
Committed: Fri Jul 21 16:45:17 2017 +0800

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 ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/9b024080/ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m
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diff --git a/ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m 
b/ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m
index f5ddc64..c96caef 100644
--- a/ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m
+++ b/ios/sdk/WeexSDK/Sources/Bridge/WXBridgeContext.m
@@ -589,7 +589,9 @@ _Pragma("clang diagnostic pop") \
 
 - (void)connectToWebSocket:(NSURL *)url
 {
-    _devToolSocketBridge = [[NSClassFromString(@"WXDebugLoggerBridge") alloc] 
initWithURL:url];
+    if (NSClassFromString(@"WXDebugLoggerBridge")) {
+        _devToolSocketBridge = [[NSClassFromString(@"WXDebugLoggerBridge") 
alloc] initWithURL:url];
+    }
 }
 
 - (void)logToWebSocket:(NSString *)flag message:(NSString *)message

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