ios回呼函數的標準實現：protocol＋delegate

一、項目結構

　　

二、主要代碼

　　1、CoreManage.h

#import <Foundation/Foundation.h>@protocol SampleProtocol;//聲明核心類的屬性和方法@interface CoreManage : NSObject@property(nonatomic,assign) id<SampleProtocol> delegate;- (void)doMainWork;@end//聲明協議中的介面函數@protocol  SampleProtocol <NSObject>@required- (void)innerTaskCallBack:(int) innerTaskSerialNo;@optional- (void)resultDisplayCallBack:(NSString *)backInfo;@end

　　2、CoreManage.m

#import "CoreManage.h"@implementation CoreManage@synthesize delegate=_delegate;- (id)init{    self = [super init];    if (self) {        //初始化代碼    }        return self;}- (void)doMainWork{    NSLog(@"核心類完成工序0");    NSLog(@"核心類完成工序1");    [self.delegate innerTaskCallBack:2];//工序2通過外部類回呼函數完成    NSLog(@"核心類完成工序3");    [self.delegate resultDisplayCallBack:@"成功"];//通過外部類回呼函數顯示任務完成結果}@end

　　3、OuterClass.h

#import <Foundation/Foundation.h>#import "CoreManage.h"@interface OuterClass : NSObject<SampleProtocol>- (void)run;@end

　　4、OuterClass.m

#import "OuterClass.h"@implementation OuterClass- (void)run{    CoreManage *coreManage=[[CoreManage alloc] init];    coreManage.delegate=self;    [coreManage doMainWork];}//回呼函數1- (void)innerTaskCallBack:(int) innerTaskSerialNo{    NSLog(@"外部類的回呼函數，完成工序%d",innerTaskSerialNo);}//回呼函數2- (void)resultDisplayCallBack:(NSString *)backInfo{    NSLog(@"外部類的回呼函數，輸出完成結果：%@",backInfo);}@end

　　5、AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];            OuterClass *outerClass=[[OuterClass alloc]init];    [outerClass run];        self.window.backgroundColor = [UIColor whiteColor];    [self.window makeKeyAndVisible];    return YES;}

三、運行結果

　　

 

參考：

　　網路通訊與UI相結合的回調：

　　http://blog.csdn.net/z251257144/article/details/7175516