NSObject+Extension.h

#import <Foundation/Foundation.h>

@interface NSObject (Extension)
- (id)performSelector:(SEL)selector withObjects:(NSArray *)objects;
@end

NSObject+Extension.m

#import "NSObject+Extension.h"

@implementation NSObject (Extension)

- (id)performSelector:(SEL)selector withObjects:(NSArray *)objects{
    
    // 方法簽名(方法的描述)
    NSMethodSignature *signature = [[self class] instanceMethodSignatureForSelector:selector];
    
    if (signature == nil) {
        // @throw [NSException exceptionWithName:@"錯(cuò)誤" reason:@"方法找不到" userInfo:nil];
        [NSException raise:@"錯(cuò)誤" format:@"%@方法找不到", NSStringFromSelector(selector)];
    }
    
    // NSInvocation : 利用一個(gè)NSInvocation對(duì)象包裝一次方法調(diào)用（方法調(diào)用者、方法名、方法參數(shù)、方法返回值）
    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
    invocation.target = self;
    invocation.selector = selector;
    
    // 設(shè)置參數(shù)
    NSInteger paramsCount = signature.numberOfArguments - 2; // 除self、_cmd以外的參數(shù)個(gè)數(shù)
    paramsCount = MIN(paramsCount, objects.count);
    for (NSInteger i = 0; i < paramsCount; i++) {
        id object = objects[i];
        if ([object isKindOfClass:[NSNull class]]) continue;
        [invocation setArgument:&object atIndex:i + 2];
    }
    
    // 調(diào)用方法
    [invocation invoke];
    
    // 獲取返回值
    id returnValue = nil;
    if (signature.methodReturnLength) { // 有返回值類型，才去獲得返回值
        [invocation getReturnValue:&returnValue];
    }
    
    return returnValue;
}

@end

在AppDelegate.m中可以捕獲異常

@implementation AppDelegate

/**
 * 崩潰統(tǒng)計(jì)
 * 1.友盟
 * 2.Flurry
 * 3.Crashlytics
 */

/**
 * 攔截異常
 */
void handleException(NSException *exception){
    NSMutableDictionary *info = [NSMutableDictionary dictionary];
    info[@"callStack"] = [exception callStackSymbols]; // 調(diào)用棧信息（錯(cuò)誤來(lái)源于哪個(gè)方法）
    info[@"name"] = [exception name]; // 異常名字
    info[@"reason"] = [exception reason]; // 異常描述（報(bào)錯(cuò)理由）
    // [info writeToFile:<#(NSString *)#> atomically:<#(BOOL)#>];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    // 將沙盒中的錯(cuò)誤信息傳遞給服務(wù)器
    // 設(shè)置捕捉異常的回調(diào)
    NSSetUncaughtExceptionHandler(handleException);
    
    return YES;
}

@end