类-(MyAnnotation注解)被释放 [英] class -(MyAnnotation annotation) was deallocated

问题描述

类-(MyAnnotation注解)的实例0x11d0ce4b0为 当关键值观察者仍在向其注册时，将其释放. 观察信息已泄漏，甚至可能被错误地附加 到其他对象.在NSKVODeallocateBreak上设置一个断点以停止 在调试器中.这是当前的观察信息:

An instance 0x11d0ce4b0 of class -(MyAnnotation annotation) was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to stop here in the debugger. Here's the current observation info:

但是我在我的dealloc方法上放置了一个断点，在那里我为这些通知取消注册.调用了Dealloc，并且我检查了它是否是同一对象，并且所有取消注册的调用都在那里.所以我不知道怎么 不能删除观察者.

But I have put a breakpoint on my dealloc method, and in there, I do deregister for those notifications. Dealloc is called, and I did check that it was the same object, and all the calls to deregister are there. So I don't know how it could not be removing the observers.

推荐答案

创建自定义AnnotationView:

#import <MapKit/MapKit.h>

@interface AnnotationView : MKPlacemark

@property (nonatomic, readwrite, assign) CLLocationCoordinate2D coordinate;

@property (nonatomic, strong) NSString *title;
@property (nonatomic, strong) NSString *subtitle;


@end

在.m file

#import "AnnotationView.h"

@implementation AnnotationView

- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate addressDictionary:(NSDictionary *)addressDictionary
{
    if ((self = [super initWithCoordinate:coordinate addressDictionary:addressDictionary]))
    {
        self.coordinate = coordinate;
    }
    return self;
}

@end

//使用注释在相关的.m file中添加#import "AnnotationView.h":

// Use Annotation Add #import "AnnotationView.h" in your relevant .m file:

CLLocationCoordinate2D pCoordinate ;
pCoordinate.latitude = LatValue;
pCoordinate.longitude = LanValue;

// Create Obj Of  AnnotationView class  

AnnotationView *annotation = [[AnnotationView alloc] initWithCoordinate:pCoordinate addressDictionary:nil] ;

    annotation.title = @"I m Here";
    annotation.subtitle = @"This is Sub Tiitle";

[self.mapView addAnnotation:annotation];

以上为简单示例，介绍了如何创建AnnotationView.

Above is simple Example of how to create AnnotationView.

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