在項目中有時會遇到自己寫的分類和其他分類方法命名一樣，導(dǎo)致自己分類的方法不執(zhí)行問題，所以寫了一個類檢查項目中有無category重復(fù)方法名問題

#import <objc/runtime.h>

#import <dlfcn.h>

#import <mach-o/ldsyms.h>

@implementation CheckCategoryMethod

+ (void)checkCategoryRepeatMethod{

    NSArray*allClassesInfo = [[self class] bundleAllClassesInfo];

    for(NSString* clsName in allClassesInfo) {

        [[self class] printRepeatMethodNamesOfClass:NSClassFromString(clsName)];

    }
}

+ (NSArray <NSString *> *)bundleAllClassesInfo {

    NSMutableArray *resultArray = [NSMutableArray new];

    intclassCount =objc_getClassList(NULL,0);



    Class*classes =NULL;

    classes = (__unsafe_unretainedClass*)malloc(sizeof(Class) *classCount);

    classCount =objc_getClassList(classes, classCount);



    dispatch_semaphore_t semaphore = dispatch_semaphore_create(1);

    dispatch_apply(classCount, dispatch_get_global_queue(0, 0), ^(size_t index) {

        dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);

        Classclass = classes[index];

        NSString*className = [[NSString alloc]initWithUTF8String:class_getName(class)];

        [resultArray addObject:className];

        dispatch_semaphore_signal(semaphore);

    });

    free(classes);

    return resultArray.mutableCopy;

}

+ (void)printRepeatMethodNamesOfClass:(Class)cls{

    unsigned int count;

    /** 獲得方法數(shù)組*/

    Method*methodList =class_copyMethodList(cls, &count);

    NSMutableArray *methodNames = [[NSMutableArray alloc] init];

    for(inti =0; i < count; i++) {

        Methodmethod = methodList[i];

        NSString*methodName =NSStringFromSelector(method_getName(method));

        if([methodNames containsObject:methodName]){

            NSLog(@"category 重復(fù)方法 class = %@ method = %@",cls,methodName);

        }

         [methodNames addObject:methodName];

    }

    /** 釋放(因為是C語言函數(shù)，所以需要手動的內(nèi)存管理，釋放內(nèi)存)*/

    free(methodList);
}