為什么80%的碼農都做不了架構師？>>> ??

// Son.m#import "Son.h"@interface Son () // 將屬性放在.m文件中，使之成為私有屬性 @property (nonatomic, copy) NSString *name;@end // Father.m#import "Father.h" #import "Son.h" #import <objc/runtime.h>@implementation Father#pragma mark - KVC 方式訪問和修改私有變量- (void)printSonNameWithKVC {Son *son = [[Son alloc] init];// 修改前NSString *name = [son valueForKey:@"name"];NSLog(@"-name:%@", name);// 修改后[son setValue:@"Jabit" forKey:@"name"];NSString *nameReset = [son valueForKey:@"name"];NSLog(@"-nameReset:%@", nameReset); }#pragma mark - Runtime 方式訪問和修改私有變量- (void)printSonNameWithRuntime {Son *son = [[Son alloc] init];unsigned int count = 0;Ivar *members = class_copyIvarList([Son class], &count);for (int i = 0; i < count; i++) {Ivar ivar = members[i];const char *memberName = ivar_getName(ivar);const char *memberType = ivar_getTypeEncoding(ivar);//依次打印屬性名稱和屬性類型NSLog(@"%s : %s", memberName, memberType);if (strcmp(memberName, "_name") == 0) {// 修改前NSString *name = (NSString *)object_getIvar(son, members[i]);NSLog(@"-name:%@", name);// 修改后object_setIvar(son, members[i], @"Jabit");NSString *nameReset = (NSString *)object_getIvar(son, members[i]);NSLog(@"-nameReset:%@", nameReset);break;}} }@end

轉載于:https://my.oschina.net/Jacedy/blog/891825

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