Question

我使用自动参考计数 - ARC。我尝试在后台执行保存以避免中断UI。我试图使用@autoreleasepool构造函数，但我可能错了...那么应如何修改此代码以避免下面的错误？感谢。

2011-12-25 22:04:41.177 MakeMyDay[1106:5f5f] *** __NSAutoreleaseNoPool(): Object 0x102210 of class NSCFString autoreleased with no pool in place - just leaking


-(void)beginAutoSave {
    if (saveTimer==nil) {
        NSLog(@"Begin Autosave");
        saveTimer = [NSTimer scheduledTimerWithTimeInterval:60.0 target:self selector:@selector(saveInBackground) userInfo:nil repeats:YES];                    
    }
}


-(void)saveInBackground {
        [self performSelectorInBackground:@selector(save) withObject:nil];
}

- (void)save
{    
    [wrapper setObject:currentVersion forKey:@"version"];
    if (taskStore!=nil) [wrapper setObject:taskStore forKey:@"taskStore"];
    [NSKeyedArchiver archiveRootObject:wrapper toFile:[self dataFilePathNew]];  
    NSLog(@"saved");
}

Answer 1

将save方法包装在autoreleasePool块中：

-(void)save {

  @autoreleasepool {

    [wrapper setObject:currentVersion forKey:@"version"];
    if (taskStore!=nil) [wrapper setObject:taskStore forKey:@"taskStore"];
    [NSKeyedArchiver archiveRootObject:wrapper toFile:[self dataFilePathNew]];  
    NSLog(@"saved");

  }

}

performSelectorInBackground给出“自动释放没有池到位”错误

1 个答案: