Restore iOS 4.0 compatibility.

Signed-off-by: Zachary Waldowski <zwaldowski@gmail.com>

AFNetworking/AFHTTPRequestOperation.m

@@ -54,9 +54,9 @@ NSSet * AFContentTypesFromHTTPHeader(NSString *string) {
     return [NSSet setWithSet:mutableContentTypes];
 }
 
-static void AFSwizzleClassMethodWithClassAndSelectorUsingBlock(Class klass, SEL selector, void *block) {
+static void AFSwizzleClassMethodWithImplementation(Class klass, SEL selector, IMP implementation) {
     Method originalMethod = class_getClassMethod(klass, selector);
-    IMP implementation = imp_implementationWithBlock(block);
+	if (method_getImplementation(originalMethod) != implementation)
 		class_replaceMethod(objc_getMetaClass([NSStringFromClass(klass) UTF8String]), selector, implementation, method_getTypeEncoding(originalMethod));
 }
 
@@ -261,6 +261,10 @@ NSString * AFCreateIncompleteDownloadDirectoryPath(void) {
 
 #pragma mark - AFHTTPRequestOperation
 
+static id AFStaticClassValueImplementation(id self, SEL _cmd) {
+	return objc_getAssociatedObject([self class], _cmd);
+}
+
 + (NSIndexSet *)acceptableStatusCodes {
     return [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(200, 100)];
 }
@@ -268,9 +272,9 @@ NSString * AFCreateIncompleteDownloadDirectoryPath(void) {
 + (void)addAcceptableStatusCodes:(NSIndexSet *)statusCodes {
     NSMutableIndexSet *mutableStatusCodes = [[[NSMutableIndexSet alloc] initWithIndexSet:[self acceptableStatusCodes]] autorelease];
     [mutableStatusCodes addIndexes:statusCodes];
-    AFSwizzleClassMethodWithClassAndSelectorUsingBlock([self class], @selector(acceptableStatusCodes), ^(id _self) {
+	SEL selector = @selector(acceptableStatusCodes);
-        return mutableStatusCodes;
+	AFSwizzleClassMethodWithImplementation([self class], selector, (IMP)AFStaticClassValueImplementation);
-    });
+	objc_setAssociatedObject([self class], selector, mutableStatusCodes, OBJC_ASSOCIATION_COPY_NONATOMIC);
 }
 
 + (NSSet *)acceptableContentTypes {
@@ -280,9 +284,9 @@ NSString * AFCreateIncompleteDownloadDirectoryPath(void) {
 + (void)addAcceptableContentTypes:(NSSet *)contentTypes {
     NSMutableSet *mutableContentTypes = [[[NSMutableSet alloc] initWithSet:[self acceptableContentTypes] copyItems:YES] autorelease];
     [mutableContentTypes unionSet:contentTypes];
-    AFSwizzleClassMethodWithClassAndSelectorUsingBlock([self class], @selector(acceptableContentTypes), ^(id _self) {
+	SEL selector = @selector(acceptableContentTypes);
-        return mutableContentTypes;
+	AFSwizzleClassMethodWithImplementation([self class], selector, (IMP)AFStaticClassValueImplementation);
-    });
+	objc_setAssociatedObject([self class], selector, mutableContentTypes, OBJC_ASSOCIATION_COPY_NONATOMIC);
 }
 
 + (BOOL)canProcessRequest:(NSURLRequest *)request {

CHANGES

@@ -1,7 +1,5 @@
 = 1.0RC1 / 2012-04-25
 
- * Note: 1.0RC1 Deprecates iOS < 4.3 compatibility because of the addition of `AFHTTPRequestOperation +addAcceptableStatusCodes / +addAcceptableContentTypes`
-
  * Add `AFHTTPRequestOperation +addAcceptableStatusCodes / 
 +addAcceptableContentTypes` to dynamically add acceptable status codes and 
 content types on the class level (Mattt Thompson)

Mac Example/AFNetworking Mac Example.xcodeproj/project.pbxproj

@@ -381,6 +381,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = Prefix.pch;
 				INFOPLIST_FILE = Info.plist;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -392,6 +393,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = Prefix.pch;
 				INFOPLIST_FILE = Info.plist;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};

README.md

@@ -143,7 +143,7 @@ operation.outputStream = [NSOutputStream outputStreamToMemory];
 
 ## Requirements
 
-AFNetworking requires either [iOS 4.3](http://developer.apple.com/library/ios/#releasenotes/General/WhatsNewIniPhoneOS/Articles/iPhoneOS4.html%23//apple_ref/doc/uid/TP40009559-SW1) and above, or [Mac OS 10.6](http://developer.apple.com/library/mac/#releasenotes/MacOSX/WhatsNewInOSX/Articles/MacOSX10_6.html#//apple_ref/doc/uid/TP40008898-SW7) and above.
+AFNetworking requires either [iOS 4.0](http://developer.apple.com/library/ios/#releasenotes/General/WhatsNewIniPhoneOS/Articles/iPhoneOS4.html) and above, or [Mac OS 10.6](http://developer.apple.com/library/mac/#releasenotes/MacOSX/WhatsNewInOSX/Articles/MacOSX10_6.html#//apple_ref/doc/uid/TP40008898-SW7) and above.
 
 AFNetworking uses [`NSJSONSerialization`](http://developer.apple.com/library/mac/#documentation/Foundation/Reference/NSJSONSerialization_Class/Reference/Reference.html) if it is available. If your app targets a platform where this class is not available you can include one of the following JSON libraries to your project for AFNetworking to automatically detect and use.
 

iOS Example/AFNetworking iOS Example.xcodeproj/project.pbxproj

@@ -392,6 +392,7 @@
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_UNUSED_PARAMETER = NO;
 				INFOPLIST_FILE = Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 4.0;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -410,6 +411,7 @@
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_UNUSED_PARAMETER = NO;
 				INFOPLIST_FILE = Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 4.0;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				VALIDATE_PRODUCT = YES;
 				WRAPPER_EXTENSION = app;