Analyzer报告以下代码泄漏

Question

Analyzer报告以下代码存在潜在的内存泄漏。有谁能解释一下这件事吗？我正在释放已分配的注释。

  -(AddressAnnotation *)addAdress:(NSString*)placeTitle SubTitle:(NSString*)placeSubTitle Coordinate:(CLLocationCoordinate2D)coord withId:(NSInteger) placeId{
        AddressAnnotation *annotation = [[AddressAnnotation alloc] initWithCoordinate:coord];
        annotation.placeTitle = placeTitle;
        annotation.placeSubTitle = placeSubTitle;
        annotation.museumId = placeId;
        [mapView addAnnotation:annotation]; 
        return annotation;

        [annotation release];
    }

Answer 1

变化

return annotation;
[annotation release];

至

return [annotation autorelease];

Answer 2

你是在返回后释放的，所以永远不会被调用。另请注意，当您添加地图视图时，它会保留注释。