Added some additional nil handling. Relates to #13

src/ios/Config/HCPApplicationConfig.m

@@ -46,7 +46,15 @@ - (NSString *)storeUrl {
 #pragma mark HCPJsonConvertable implementation
 
 - (id)toJson {
-    NSMutableDictionary *jsonObject = [[NSMutableDictionary alloc] initWithDictionary:[self.contentConfig toJson]];
+    NSMutableDictionary *jsonObject;
+    NSDictionary *contentConfigJsonObject = [self.contentConfig toJson];
+
+    if (contentConfigJsonObject) {
+        jsonObject = [[NSMutableDictionary alloc] initWithDictionary:contentConfigJsonObject];
+    } else {
+        jsonObject = [[NSMutableDictionary alloc] init];
+    }
+
     if (self.storeIdentifier) {
         jsonObject[STORE_PACKAGE_IDENTIFIER_JSON_KEY] = self.storeIdentifier;
     }

src/ios/Config/HCPContentConfig.m

@@ -86,11 +86,26 @@ - (HCPUpdateTime)updateTimeStringToEnum:(NSString *)updateTime {
 
 #pragma mark HCPJsonConvertable implementation
 
-- (id)toJson {    
-    return @{RELEASE_VERSION_JSON_KEY: _releaseVersion,
-             MINIMUM_NATIVE_VERSION_JSON_KEY: [NSNumber numberWithInteger:_minimumNativeVersion],
-             UPDATE_TIME_JSON_KEY: [self updateTimeEnumToString:_updateTime],
-             CONTENT_URL_JSON_KEY: _contentURL.absoluteString};
+- (id)toJson {
+    NSMutableDictionary *jsonObject = [[NSMutableDictionary alloc] init];
+    if (_releaseVersion) {
+        jsonObject[RELEASE_VERSION_JSON_KEY] = _releaseVersion;
+    }
+
+    if (_minimumNativeVersion > 0) {
+        jsonObject[MINIMUM_NATIVE_VERSION_JSON_KEY] = [NSNumber numberWithInteger:_minimumNativeVersion];
+    }
+
+    NSString *updateTimeStr = [self updateTimeEnumToString:_updateTime];
+    if (updateTimeStr) {
+        jsonObject[UPDATE_TIME_JSON_KEY] = updateTimeStr;
+    }
+
+    if (_contentURL) {
+        jsonObject[CONTENT_URL_JSON_KEY] = _contentURL.absoluteString;
+    }
+
+    return jsonObject;
 }
 
 + (instancetype)instanceFromJsonObject:(id)json {

src/ios/JS/CDVPluginResult+HCPEvents.m

@@ -72,7 +72,14 @@ + (NSDictionary *)constructErrorBlock:(NSError *)error {
  *  @return JSON dictionary with user data
  */
 + (NSDictionary *)constructDataBlock:(HCPApplicationConfig *)appConfig {
-    return @{DATA_USER_INFO_CONFIG: [appConfig toJson]};
+    NSMutableDictionary *dataBlockDict = [[NSMutableDictionary alloc] initWithDictionary:@{DATA_USER_INFO_CONFIG: @{}}];
+
+    id appConfigJsonObject = [appConfig toJson];
+    if (appConfigJsonObject) {
+        return dataBlockDict[DATA_USER_INFO_CONFIG] = appConfigJsonObject;
+    }
+
+    return dataBlockDict;
 }
 
 @end

src/ios/Utils/NSBundle+HCPExtension.m

@@ -16,7 +16,7 @@ @implementation NSBundle (HCPExtension)
 
 + (NSInteger)applicationBuildVersion {
     NSBundle *mainBundle = [NSBundle mainBundle];
-    id appBuildVersion = [mainBundle objectForInfoDictionaryKey: (NSString *)kCFBundleVersionKey];
+    id appBuildVersion = [mainBundle objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
     if (appBuildVersion == nil) {
         return 0;
     }