代理
＊＊＊＊＊＊＊＊＊＊＊傳旨方3步（定義協(xié)議 傳遞參數(shù)）＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊
1)定義協(xié)議.方法
2)聲明一個屬性,記錄代理對象
3)在合適的時機,給代理方發(fā)消息

.h
1,@protocol PaperClickDelegate <NSObject>
-(void)BtnClick:(PaperCellModel*)viewModel;
@end
2,@property(nonatomic,assign)id delegate;
.m
3,[self.delegate BtnClick:self.paperCellModel];

＊＊＊＊＊＊＊＊＊＊＊＊接旨方3步（遵守協(xié)議 實現(xiàn)方法）＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊
1)遵守協(xié)議
2)實現(xiàn)方法
3)設置代理

.h
1, @interface PaperTestTableViewController() <PaperClickDelegate>
.m
2, cell.delegate=self;
3,-(void)BtnClick:(PaperCellModel*)viewModel{
[viewModel.paperModel.userMeta.currentPracticeId integerValue]
｝

Block
Block深究淺析(上篇)-Block本質(zhì)
Block深究淺析(中篇)-內(nèi)存管理與變量傳遞
Block深究淺析(下篇)-開發(fā)中使用場景
Objective-C中的Block

＊＊＊＊＊＊＊＊＊＊＊＊傳值回調(diào)（逆向傳值）＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊

場景:控制器的逆?zhèn)鲗崿F(xiàn)方式很多,這里講一下modal方式的block逆?zhèn)?A控制器modal出B控制器,B控制器dismiss后傳值給A控制器

1:聲明一個帶參數(shù)Block屬性
2:在需要傳值控制器中定義Block
3:在傳值控制器中調(diào)用Block

***控制器B:  （聲明block，傳值）***
// ModalVC.h (1)  <也可以是view>
// 在要modal的控制器B聲明一個帶參數(shù)block屬性
@property (nonatomic ,strong) void(^valueBlcok)(int value);
//@property(nonatomic,copy)void(^cellClickBlock)(NSString*msg);

// ModalVC.m   (3)
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    // 傳值
    if (_valueBlock) {
        _valueBlock(@"123");
    }
    
    [self dismissViewControllerAnimated:YES completion:nil];
}

   // 點擊事件觸發(fā)block傳值
//self.cellClickBlock(model.paperModel.ID);


-----------------------
***控制器A:  (2) （接收 處理后 的數(shù)據(jù)）***
2，
//回掉接值方
/*
.m
VC.cellClickBlock= ^(NSString*msg) {
DLog(@"點擊的ID==%@",msg);
};
*/

// viewContent.m  (控制器獲取點擊view事件)
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    ModalViewController *modalVc = [[ModalViewController alloc] init];
 
    modalVc.valueBlock = ^(NSString *value){
      // 回調(diào)
        NSLog(@"%@",value);
        
    };
    
    [self presentViewController:modalVc animated:YES completion:nil];
}

＊＊＊＊＊＊＊＊＊＊＊＊＊＊Block 請求回調(diào)＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊
B:

NetworkRequest.h
/**
 *  成功。
 *  @param responseObject 返回的數(shù)據(jù)。
 */
typedef void(^Succsess)(id responseObject);

/**
 *  失敗。
 *  @param error 失敗原因。
 */
typedef void(^Failure)(NSString *errorMessage);

+(void)requestWithParameter:(NSDictionary *)dic withSuccess:(Succsess)succsess andFailure:(Failure)failure;


NetworkRequset.m

+(void)requestWithParameter:(NSDictionary *)dic withSuccess:(Succsess)succsess andFailure:(Failure)failure{


   if(succsess){
                succsess(@{@"result":[NSNumber numberWithBool:YES],@"modelarray":mArray,@"myRankModel":myRank});
  }
   if(failure){
            DLog(@"error");
            failure([request.ErrorDic objectForKey:@"message"]);
     }


}



----------


HTIAPHelper.h

typedef void(^buyCompletionBlock)(NSString *identifier);
typedef void(^restoreCompletionBlock)(NSArray *products);
typedef void(^failedBlock)(NSString *reason);

// 回調(diào)塊代碼
@property (nonatomic, copy) buyCompletionBlock      buyCompletion;
@property (nonatomic, copy) restoreCompletionBlock  restoreCompletion;
@property (nonatomic, copy) failedBlock             failedBlock;


HTIAPHelper.m
- (void)buyProduct:(NSString *)identifier
        completion:(buyCompletionBlock)completion
            failed:(failedBlock)failed
{
    // 記錄回調(diào)塊代碼
    self.buyCompletion = completion;
    self.failedBlock = failed;
}


// 回調(diào)傳值
#warning -Break Cycle 是否要打破循環(huán)？
//注意：你可以直接在 block 回調(diào)中使用 self，不用擔心循環(huán)引用。因為 YTKRequest 會在執(zhí)行完 block 回調(diào)之后，將相應的 block 設置成 nil。從而打破循環(huán)引用。
   //  __weak typeof(self) wself = self;
    [requset startWithCompletionBlockWithSuccess:^(__kindof YTKBaseRequest *request) {
        NSInteger code = [[request.responseJSONObject objectForKey:@"code"] integerValue];
        if (code== 1000000) {
         //      __strong typeof(wself) sself = wself;
            self.buyCompletion(@"1000000");
       //       [sself->_buyCompletion addObject:@"1000000"];           
        }else
        {
         //     __strong typeof(wself) sself = wself;
            self.buyCompletion(@"-1");
       //       [sself->_buyCompletion addObject:@"-1"];
        }
        
        
    } failure:^(__kindof YTKBaseRequest *request) {
    if (_failedBlock) {
            _failedBlock([request.userInfo objectForKey:@"message"]);
        }
    }];

A:

    [[HTIAPHelper sharedIAPHelper] buyProduct:_Salemodel.inPurchaseProductId completion:^(NSString *identifier) {
        //identifier = self.buyCompletion(@"");
        if ([identifier isEqualToString:@"1000000"]) {
    //do SomeThings
}
    } failed:^(NSString *reason) {
//reason==  _failedBlock()
    //do SomeThings
    }];