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RuntimeDemo.xcworkspace/xcuserdata/huangyibiao.xcuserdatad/UserInterfaceState.xcuserstate
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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // HYBMethodExchange.h | ||
| // RuntimeDemo | ||
| // | ||
| // Created by huangyibiao on 16/1/4. | ||
| // Copyright © 2016年 huangyibiao. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @interface HYBMethodExchange : NSObject | ||
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| + (void)test; | ||
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| @end | ||
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| // | ||
| // HYBMethodExchange.m | ||
| // RuntimeDemo | ||
| // | ||
| // Created by huangyibiao on 16/1/4. | ||
| // Copyright © 2016年 huangyibiao. All rights reserved. | ||
| // | ||
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| #import "HYBMethodExchange.h" | ||
| #import <objc/runtime.h> | ||
| #import "NSMutableArray+Swizzling.h" | ||
| #import "NSArray+Swizzling.h" | ||
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| @implementation HYBMethodExchange | ||
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| + (void)test { | ||
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| // Method originalMethod = class_getInstanceMethod([NSArray class], @selector(lastObject)); | ||
| // Method newMedthod = class_getInstanceMethod([NSArray class], NSSelectorFromString(@"hdf_lastObject")); | ||
| // method_exchangeImplementations(originalMethod, newMedthod); | ||
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| NSMutableArray *array = [@[@"value", @"value1"] mutableCopy]; | ||
| [array lastObject]; | ||
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| [array removeObject:@"value"]; | ||
| [array removeObject:nil]; | ||
| [array addObject:@"12"]; | ||
| [array addObject:nil]; | ||
| [array insertObject:nil atIndex:0]; | ||
| [array insertObject:@"sdf" atIndex:10]; | ||
| [array objectAtIndex:100]; | ||
| [array removeObjectAtIndex:10]; | ||
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| NSMutableArray *anotherArray = [[NSMutableArray alloc] init]; | ||
| [anotherArray objectAtIndex:0]; | ||
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| NSString *nilStr = nil; | ||
| NSArray *array1 = @[@"ara", @"sdf", @"dsfdsf", nilStr]; | ||
| NSLog(@"array1.count = %lu", array1.count); | ||
| } | ||
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| // C语言版 | ||
| void swizzleSelector(Class class, SEL originalSelector, SEL swizzledSelector) { | ||
| Method originalMethod = class_getInstanceMethod(class, originalSelector); | ||
| Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector); | ||
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| // 若已经存在，则添加会失败 | ||
| BOOL didAddMethod = class_addMethod(class, | ||
| originalSelector, | ||
| method_getImplementation(swizzledMethod), | ||
| method_getTypeEncoding(swizzledMethod)); | ||
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| // 若原来的方法并不存在，则添加即可 | ||
| if (didAddMethod) { | ||
| class_replaceMethod(class, | ||
| swizzledSelector, | ||
| method_getImplementation(originalMethod), | ||
| method_getTypeEncoding(originalMethod)); | ||
| } else { | ||
| method_exchangeImplementations(originalMethod, swizzledMethod); | ||
| } | ||
| } | ||
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| @end |
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| // | ||
| // HYBMethodLearn.h | ||
| // RuntimeDemo | ||
| // | ||
| // Created by huangyibiao on 16/1/12. | ||
| // Copyright © 2016年 huangyibiao. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @interface HYBMethodLearn : NSObject | ||
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| + (void)test; | ||
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| @end |
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| // | ||
| // HYBMethodLearn.m | ||
| // RuntimeDemo | ||
| // | ||
| // Created by huangyibiao on 16/1/12. | ||
| // Copyright © 2016年 huangyibiao. All rights reserved. | ||
| // | ||
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| #import "HYBMethodLearn.h" | ||
| #import <objc/runtime.h> | ||
| #import <objc/message.h> | ||
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| @implementation HYBMethodLearn | ||
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| - (int)testInstanceMethod:(NSString *)name andValue:(NSNumber *)value { | ||
| NSLog(@"%@", name); | ||
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| return value.intValue; | ||
| } | ||
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| - (NSArray *)arrayWithNames:(NSArray *)names { | ||
| NSLog(@"%@", names); | ||
| return names; | ||
| } | ||
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| - (void)getMethods { | ||
| unsigned int outCount = 0; | ||
| Method *methodList = class_copyMethodList(self.class, &outCount); | ||
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| for (unsigned int i = 0; i < outCount; ++i) { | ||
| Method method = methodList[i]; | ||
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| SEL methodName = method_getName(method); | ||
| NSLog(@"方法名：%@", NSStringFromSelector(methodName)); | ||
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| // 获取方法的参数类型 | ||
| unsigned int argumentsCount = method_getNumberOfArguments(method); | ||
| char argName[512] = {}; | ||
| for (unsigned int j = 0; j < argumentsCount; ++j) { | ||
| method_getArgumentType(method, j, argName, 512); | ||
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| NSLog(@"第%u个参数类型为：%s", j, argName); | ||
| memset(argName, '\0', strlen(argName)); | ||
| } | ||
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| char returnType[512] = {}; | ||
| method_getReturnType(method, returnType, 512); | ||
| NSLog(@"返回值类型：%s", returnType); | ||
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| // type encoding | ||
| NSLog(@"TypeEncoding: %s", method_getTypeEncoding(method)); | ||
| } | ||
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| free(methodList); | ||
| } | ||
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| + (void)test { | ||
| HYBMethodLearn *m = [[HYBMethodLearn alloc] init]; | ||
| // [m getMethods]; | ||
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| ((void (*)(id, SEL))objc_msgSend)((id)m, @selector(getMethods)); | ||
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| // 这就是为什么有四个参数的原因 | ||
| int returnValue = ((int (*)(id, SEL, NSString *, NSNumber *)) | ||
| objc_msgSend)((id)m, | ||
| @selector(testInstanceMethod:andValue:), | ||
| @"标哥的技术博客", | ||
| @100); | ||
| NSLog(@"return value is %d", returnValue); | ||
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| // 获取方法 | ||
| Method method = class_getInstanceMethod([self class], @selector(testInstanceMethod:andValue:)); | ||
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| // 调用函数 | ||
| returnValue = ((int (*)(id, Method, NSString *, NSNumber *))method_invoke)((id)m, method, @"测试使用method_invoke", @11); | ||
| NSLog(@"call return vlaue is %d", returnValue); | ||
| } | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // | ||
| // HYBPropertyLearn.h | ||
| // RuntimeDemo | ||
| // | ||
| // Created by huangyibiao on 16/1/10. | ||
| // Copyright © 2016年 huangyibiao. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @interface HYBPropertyLearn : NSObject { | ||
| float _websiteTitle; | ||
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| @private | ||
| float _privateAttribute; | ||
| } | ||
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| @property (nonatomic, copy) NSString *title; | ||
| @property (nonatomic, strong) NSArray *names; | ||
| @property (nonatomic, assign) int count; | ||
| @property (nonatomic, weak) id delegate; | ||
| @property (atomic, strong) NSNumber *atomicProperty; | ||
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| + (void)test; | ||
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| @end |
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