handle warning

Author: YangSen-qn

QiniuDemo/QiniuDemo.xcodeproj/project.pbxproj

@@ -512,7 +512,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = W2TP34G2MM;
 				INFOPLIST_FILE = QiniuDemo/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.qiniu.QiniuDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -526,7 +526,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = W2TP34G2MM;
 				INFOPLIST_FILE = QiniuDemo/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.qiniu.QiniuDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";

QiniuSDK/Http/UrlProtocol/NSURLRequest+QNRequest.m

@@ -83,7 +83,7 @@ - (NSData *)qn_getHttpBody{
 }
 
 - (BOOL)qn_isHttps{
-    if ([self.URL.absoluteString containsString:@"https://"]) {
+    if ([self.URL.absoluteString rangeOfString:@"https://"].location != NSNotFound) {
         return YES;
     } else {
         return NO;