AvAudioPlayer設置委託以釋放委託對象？

Question

@implementation MyClass 

-(id) init 
{ 
    NSString *path0 = [ [NSBundle mainBundle] pathForResource:@"myfile" ofType:@"m4a" ]; 
    mSound = [[AVAudioPlayer alloc]initWithContentsOfURL:[NSURL fileURLWithPath:path0] error:NULL]; 
    mSound.delegate = self; 
} 

-(void) release 
{ 

    mSound.delegate = nil; //<- this line causes MyClass release function to be called recursively 
    [ mSound release ];  //<- removing the line above makes this line do the same, i.e. calls myclass release recursively 
} 

似乎釋放AvAudioPlayer也釋放委託對象，我試圖在將其分配給委託時手動調用retain，但它沒有幫助。

即使我做這樣的事情：

-(id) init 
{ 
    NSString *path0 = [ [NSBundle mainBundle] pathForResource:@"myfile" ofType:@"m4a" ]; 
    mSound = [[AVAudioPlayer alloc]initWithContentsOfURL:[NSURL fileURLWithPath:path0] error:NULL]; 
    mSound.delegate = self; 
    mSound.delegate = nil; //<- (just for test), causes MyClass release to be invoked,  
} 

我得到MYCLASS的釋放時我分配委託零

任何想法怎麼回事從初始化馬上叫什麼名字？

Answer 1

通常，代表不會保留，只能分配。代表應保留在其他地方。除此之外，這保持了保留週期的發生。