iOS： 请问大家下面这段 ViewController 的代码（ app logic 的部分）怎么优化？我不想在 VC 里面放这些琐碎的代码怎么怎么搞？

我又出了一个版本，根据大家的意见整理了下

 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //macro.h #ifndef weakify #if __has_feature(objc_arc) #define weakify( x ) autoreleasepool{} __weak __typeof__(x) __weak_##x##__ = x; #else // #if __has_feature(objc_arc) #define weakify( x ) autoreleasepool{} __block __typeof__(x) __block_##x##__ = x; #endif // #if __has_feature(objc_arc) #endif // #ifndef weakify #ifndef normalize #if __has_feature(objc_arc) #define normalize( x ) try{} @finally{} __typeof__(x) x = __weak_##x##__; #else // #if __has_feature(objc_arc) #define normalize( x ) try{} @finally{} __typeof__(x) x = __block_##x##__; #endif // #i __has_feature(objc_arc) #endif // #ifndef @normalize ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //store/pref/ASHPrefStore.h @interface ASHPrefStore : NSObject + (BOOL)haveReadBroadcastTip; + (void)setHaveReadBroadcastTip; @end //store/pref/ASHPrefStore.m @implementation ASHPrefStore static NSString *const kHaveReadBroadcastTipKey = @"haveReadBroadcastTip"; + (BOOL)haveReadBroadcastTip { return [[NSUserDefaults standardUserDefaults] boolForKey:kHaveReadBroadcastTipKey]; } + (void)setHaveReadBroadcastTip { [[NSUserDefaults standardUserDefaults] setObject:@(YES) forKey:kHaveReadBroadcastTipKey]; } @end 

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //network/ASHNetworkAPI.h @interface ASHNetworkAPI : NSObject + (void)sendBroadcastRequestWithMsg:(NSString *)msg successBlock:(void(^)(void))successBlock failureBlock:(void(^)(NSError *error))failureBlock; @end //network/ASHNetworkAPI.m @implementation ASHNetworkAPI + (void)sendBroadcastRequestWithMsg:(NSString *)msg successBlock:(void(^)(void))successBlock failureBlock:(void(^)(NSError *error))failureBlock { //send request dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ !successBlock ?: successBlock(); }); } @end 

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //utils/ui/ASHAlertUtils.h @interface ASHAlertUtils : NSObject + (void)showAlertWithController:(UIViewController *)controller msg:(NSString *)msg callback:(void(^)(void))callback; + (void)showEditAlertWithController:(UIViewController *)controller title:(NSString *)title placeholder:(NSString *)placeholder callback:(void(^)(NSString *content))callback; @end //utils/ui/ASHAlertUtils.m @implementation ASHAlertUtils #pragma mark - utils + (void)showAlertWithController:(UIViewController *)controller msg:(NSString *)msg callback:(void(^)(void))callback { UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:msg preferredStyle:UIAlertControllerStyleAlert]; [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { !callback ?: callback(); }]]; [controller presentViewController:alert animated:YES completion:nil]; } 

+ (void)showEditAlertWithController:(UIViewController *)controller title:(NSString *)title placeholder:(NSString *)placeholder callback:(void(^)(NSString *content))callback { UIAlertController *alertCOntroller= [UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleAlert]; [alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) { textField.placeholder = placeholder; }]; [alertController addAction:[UIAlertAction actionWithTitle:@"发送" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { NSString *cOntent= [[alertController textFields][0] text]; !callback ?: callback(content); }]]; [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { NSLog(@"Canelled"); }]]; [controller presentViewController:alertController animated:YES completion:nil]; } @end 

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //controller/ASHTempViewController.m @implementation ASHTempViewController #pragma mark - app logic - (void)sendBroadcastWithSuccessBlock:(void (^)(void))successBlock { @weakify(self) void (^showSendBroadcast) (void) = ^{ [ASHAlertUtils showEditAlertWithController:self title:@"发送广播'" placeholder:@"说点什么..." callback:^(NSString *content) { [ASHNetworkAPI sendBroadcastRequestWithMsg:content successBlock:successBlock failureBlock:^(NSError *error) { @normalize(self) !self ?: [ASHAlertUtils showAlertWithController:self msg:error.localizedDescription callback:nil]; }]; }]; }; if ([ASHPrefStore haveReadBroadcastTip]) { showSendBroadcast(); } else { NSString *title = @"1、发布广播，全服玩家都可以看到；\n2、禁止发布反动、政治、色情、辱骂、广告等不良言论，否则将会遭到删除、封号处理。"; [ASHAlertUtils showAlertWithController:self msg:title callback:^{ [ASHPrefStore setHaveReadBroadcastTip]; showSendBroadcast(); }]; } } @end