block系列重新整理3:循环引用

AppDelegate.m

#import "AppDelegate.h"
#import "Person.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    
    //循环引用 第一种方式
//    __block Person *ps = [[Person alloc] init];
//    ps.myblock = ^{
//        [ps test];
//    };
//    [ps loadData];
//    [ps release];
    
    
    //循环引用 第二种方式
    Person *ps = [[Person alloc] init];
    [ps printTest];
    [ps release];
    
    return YES;
}

typedef void(^Personblock)();

@interface Person : NSObject
{
    NSString *name;
}

@property (nonatomic, copy)Personblock myblock;


- (void)test;

- (void)loadData;

- (void)printTest;

- (void)test
{
    NSLog(@"print test");
}

- (void)loadData
{
    _myblock();
}

- (void)printTest
{
    __block Person *ps = self;
    self.myblock = ^{
        ps->name = @"jack";
        [ps test];
    };
    
    self.myblock();
}


- (void)dealloc
{
    NSLog(@"%s",__FUNCTION__);
    
    //二选一
//    [_myblock release];
    Block_release(_myblock);
    [super dealloc];
}