Ios 清除MKSnapshotter内存

我目前正在使用MKSnapshotter，但我注意到与MKMapView类似，它会占用大量内存，并且在应用程序运行期间从不释放它。我已尝试释放内存，但没有用：

-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[self releaseMKMapSnapshotMem];
}

-(void)releaseMKMapSnapshotMem{
    self.snapshotter=nil;//MKSnapShotter
    self.options=nil;//MKSnapShotterOptions
 }

非常感谢您的帮助

更新 包括更多细节

MKMapSnapshotOptions * snapOptions= [[MKMapSnapshotOptions alloc] init];
        self.options=snapOptions;
        CLLocation * salonLocation = [[CLLocation alloc] initWithLatitude:self.lat longitude:self.long];
        MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(location.coordinate, 300, 300);
        self.options.region = region;
        self.options.size = self.view.frame.size;
        self.options.scale = [[UIScreen mainScreen] scale];

        MKMapSnapshotter * mapSnapShot = [[MKMapSnapshotter alloc] initWithOptions:self.options];
        self.snapshotter =mapSnapShot;
        [self.snapshotter startWithCompletionHandler:^(MKMapSnapshot *snapshot, NSError *error) {
            if (error) {
                NSLog(@"[Error] %@", error);
                return;
            }

            UIImage *image = snapshot.image;
            self.mapImage = image;
            NSData *data = UIImagePNGRepresentation(image);

            [self saveMapDataToCache:data WithKey:mapName];



        }];

试试这个：

    MKMapSnapshotOptions * snapOptions= [[MKMapSnapshotOptions alloc] init];
    CLLocation * salonLocation = [[CLLocation alloc] initWithLatitude:self.lat longitude:self.long];
    //location.coordinate or salonLocation.coordinate below????
    MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(location.coordinate, 300, 300);
    snapOptions.region = region;
    snapOptions.size = self.view.frame.size;
    snapOptions.scale = [[UIScreen mainScreen] scale];

    MKMapSnapshotter * mapSnapShot = [[MKMapSnapshotter alloc] initWithOptions: snapOptions];
    [mapSnapShot startWithCompletionHandler:^(MKMapSnapshot *snapshot, NSError *error) {
        if (error) {
            NSLog(@"[Error] %@", error);
            return;
        }
        UIImage *image = snapshot.image;
        NSData *data = UIImagePNGRepresentation(image);

        [self saveMapDataToCache:data WithKey:mapName];

    }];

我做的和你做的差不多，只有两个不同点：

    options.region = _mapView.region;
    options.size = _mapView.frame.size;

---

my _mapView是视图控制器中显示的地图…

您的mapView属性声明是什么样子的？弱/强？可能需要一个弱小的…@meierjo它的弱小已经很小了更多信息？i、 e.向ViewCOntroller显示地图视图，用户保存位置，应用程序拍摄快照，保存快照，然后解除ViewCOntroller-等等。@meierjo ViewCOntroller显示，纬度和经度在MKSnapShotter中传递以拍摄图像，然后图像被缓存。@meierjo如需了解更多详细信息，请参阅上文。不显示地图，如果有意义的话，我只显示快照。你启动了跟踪堆增长的仪器了吗？谷歌/搜索这么多关于乐器的优秀图坦卡门