协议和委托不访问方法

Question

我想通过一些数据回到我的UIView，它的高频复杂的情况我会尝试解释它。

我有我的

mainViewController // request is made to RequestClass 
requestClass // Request is sent off to DB for data, data is returned then passed to seriesDataClass 
seriesDataClass // sorts the data and then sends back the needed info to mainViewController using protocol & delegates 

这是我的代码是什么样子设立协议和委托

mainViewController.h

#import "SeriesDataClass.h" 

@interface MatchingSeriesViewController : UIViewController <GetSeriesViewParsedData> 
{ 

mainViewController.m

#import "SeriesDataClass.h" 
// this is where I set up my protocols delegate. 
- (void)viewDidLoad 
{ 
    //.. 
    // get delegate ready 
    SeriesDataClass *seriesDataClass = [[SeriesDataClass alloc] init]; 

    [seriesDataClass setDelegate:self]; 
//.. 

// pass data over to requestClass so you can get the info from the DB 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
//.. 
    [requestClass GetSeries:requestID]; 
//.. 
} 

requestClass.m

// dose a bunch of stuff then calls seriesDataClass and passes all of its information over to it 

//.. 
SeriesDataClass *seriesDataClass = [[SeriesDataClass alloc] init]; 
[seriesDataClass recivedData:uncompressedData]; 
//.. 

seriesDataClass.h

#import <Foundation/Foundation.h> 

// This passes data back to the mainViewController 
@protocol GetSeriesViewParsedData <NSObject> 
- (void)sendGetSeriesArrays:(NSDictionary *)series LSeries:(NSDictionary *)lSeries; 
@end 

@interface SeriesDataClass : NSObject <NSXMLParserDelegate> { 
//.. 

} 
@property (assign, nonatomic) id <GetSeriesViewParsedData> delegate; 

seriesDataClass.m

@implementation SeriesDataClass 

@synthesize delegate; 

// then in a method later on i call the delegate to pass the information back to mainViewController but this dosnt do anything atm. 

//.. 
[self.delegate sendGetSeriesArrays:seriesDictionary LSeries:lSeriesDictionary]; 
//.. 

mainViewController.m

// then back in the mainViewController class I Have the method 

- (void)sendGetSeriesArrays:(NSDictionary *)series LSeries:(NSDictionary *)lSeries { 
// this method is never accessed 
} 

所以我的问题是我失去了在它没有被正确的工作该协议/ delgate的设置什么？

我希望问题的结构是有道理的，如果你需要更多的信息，请让我知道。

Answer 1

你的问题是，你正在创建你的SeriesDataClass的两个实例，一个在MainViewController，另一个在RequestClass。所以，调用委托方法的实例不是主视图控制器自己设置为委托的实例。当您在MainViewController中创建RequestClass的实例时，需要将seriesDataClass（您创建的实例）传递给RequestClass中的一个属性，以便它将与相同的实例一起工作。

您应该创造MainViewController属性：

@property (strong,nonatomic) SeriesDataClass *seriesDataClass; 

然后viewDidLoad方法应该是这样的：

- (void)viewDidLoad { 
    self.seriesDataClass = [[SeriesDataClass alloc] init]; 
    [self.seriesDataClass setDelegate:self]; 
} 

然后在didSelectRowAtIndexPath方法，创建你RequestClass实例，并把它传递seriesDataClass：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    RequestClass *requestClass = [[RequestClass alloc] init]; 
    requestClass.seriesDataInstance = self.seriesDataClass; 
    [requestClass GetSeries:requestID]; 
} 

在。你需要创建了财产RequestClass的H：

@property (strong,nonatomic) SeriesDataClass *seriesDataInstance; 

然后在RequestClass，这样的：

SeriesDataClass *seriesDataClass = [[SeriesDataClass alloc] init]; 
[seriesDataClass recivedData:uncompressedData]; 

应该只是更换：

[self.seriesDataInstance recivedData:uncompressedData]; 

我已经改变了一些大写，以反映你应该这样做的方式。类应以大写字母开头，实例和方法应以小写字母开头。

Answer 2

更改此：

#import "SeriesDataClass.h" 
// this is where I set up my protocols delegate. 
- (void)viewDidLoad 
{ 
//.. 
// get delegate ready 
SeriesDataClass *seriesDataClass = [[GetSeriesResultItem alloc] init]; 

[seriesDataClass setDelegate:self];