我有下一段代碼,一個帶有此屬性的iVar保留並在其類dealloc
方法中發佈。 iVar在2種方法中使用,並且不斷更改該值,但有時會在使用該值時損壞 。這是爲什麼?@property中的MeMemory腐敗
@interface ChatController : NSObject <ASIHTTPRequestDelegate>{
NSTimer *timer;
NSString *_idLastMessageFromServer;
}
@property(nonatomic, retain)NSString *idLastMessageFromServer;
@end
.M
@implementation ChatController
@synthesize idLastMessageFromServer = _idLastMessageFromServer;
- (void)initLoopTimer{
timer = [NSTimer timerWithTimeInterval:5 target:self selector:@selector(update:) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];
}
- (void)update:(id)sender{
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:CONSTANT_YYYY];
[request setDelegate:self];
[request addPostValue:_idLastMessageFromServer forKey:CONSTANT_XXX];
[request setDidFinishSelector:@selector(requestUpdateFinish:)];
[request startAsynchronous];
}
- (void)requestUpdateFinish:(ASIHTTPRequest *)request{
NSString *response = [request responseString];
if(response && response.length){
if(![response isEqualToString:CHAT_RESPONSE_NO_MESSAGES]){
NSArray *array = [response componentsSeparatedByString:CHAT_PARSE_RESPONSE];
if(array && [array count] == 2){
**_idLastMessageFromServer = [array objectAtIndex:0];**
}
}
}
}
但當循環調用該方法更新.H:,它在這行代碼
[request addPostValue:_idLastMessageFromServer forKey:CONSTANT_XXX];
與EXC_BAD_ACCESS崩潰消息,但爲什麼?
您應該更正標題的拼寫,以幫助人們搜索內存損壞。 – Cthutu
謝謝@Jacky Boy – NTTake