Release 1.5.2

1. 修改 String 类型属性长度限制，256=>8192
2. 修复可视化埋点中，UIWindow对象切换导致的问题

Author: Yuhan ZOU

SensorsAnalyticsSDK/SensorsAnalyticsSDK.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "SensorsAnalyticsSDK"
-  s.version      = "1.5.1"
+  s.version      = "1.5.2"
   s.summary      = "The offical iOS SDK of Sensors Analytics."
   s.homepage     = "http://www.sensorsdata.cn"
   s.source       = { :git => 'https://github.com/sensorsdata/sa-sdk-ios.git', :tag => "v#{s.version}" } 

SensorsAnalyticsSDK/SensorsAnalyticsSDK/SAObjectSerializer.m

@@ -46,10 +46,14 @@ - (NSDictionary *)serializedObjectsWithRootObject:(id)rootObject {
 
     SAObjectSerializerContext *context = [[SAObjectSerializerContext alloc] initWithRootObject:rootObject];
 
-    while ([context hasUnvisitedObjects]) {
-        [self visitObject:[context dequeueUnvisitedObject] withContext:context];
+    @try {
+        while ([context hasUnvisitedObjects]) {
+            [self visitObject:[context dequeueUnvisitedObject] withContext:context];
+        }
+    } @catch (NSException *e) {
+        SAError(@"Failed to serialize objects: %@", e);
     }
-
+    
     return @{
             @"objects" : [context allSerializedObjects],
             @"rootObject": [_objectIdentityProvider identifierForObject:rootObject]

SensorsAnalyticsSDK/SensorsAnalyticsSDK/SensorsAnalyticsSDK.m

@@ -26,9 +26,9 @@
 #import "SASwizzler.h"
 #import "SensorsAnalyticsSDK.h"
 
-#define VERSION @"1.5.1"
+#define VERSION @"1.5.2"
 
-#define PROPERTY_LENGTH_LIMITATION 255
+#define PROPERTY_LENGTH_LIMITATION 8191
 
 @implementation SensorsAnalyticsDebugException
 
@@ -1254,10 +1254,10 @@ - (void)checkForConfigure {
                 self.eventBindings = parsedEventBindings;
                 [self archiveEventBindings];
             } else {
-                SALog(@"%@ Tracking events check response format error: %@", self, object);
+                SALog(@"%@ the configure of VTrack is not loaded: %@", self, object);
             }
         } else {
-            SALog(@"%@ Tracking events check response format error: %@", self, object);
+            SALog(@"%@ the configure of VTrack is not loaded: %@", self, object);
         }
     };