谷歌地图iOS SDK崩溃

Question

I use google maps iOS SDK with storyboard. Application starting with Navigation View Controller that has a Root View Controller with map.

@implementation MyViewController
@synthesize btnMyLock;
@synthesize btnNearby;

GMSMapView *mapView_;
- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:20
                                                        longitude:20
                                                             zoom:0];

     mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
     mapView_.myLocationEnabled = YES;

     self.view = mapView_;
     // Creates a marker in the center of the map.
     GMSMarker *marker = [[GMSMarker alloc] init];
     [marker setIcon:[UIImage imageNamed:@"pin"]];
     marker.position = CLLocationCoordinate2DMake(-33.86, 151.20);
     marker.title = @"Sydney";
     marker.snippet = @"Australia";
     marker.map = mapView_;

     mapView_.settings.compassButton = YES;

     [mapView_ addSubview:btnMyLock];
     [mapView_ addSubview:btnNearby]; 
}

Button btnMyLock push the Table View Controller. In iOS 7 it's ok. But iOS 6 my app crashes. Sometimes crash with EXC_BAD_ACCESS (code=1) or code=2

Answer 1

我使用Autolayout视图的问题。

Answer 2

you forgot step 4: " Drag the GoogleMaps.bundle " from the Resources folder to your project.

I suggest putting it in the Frameworks group. When prompted, ensure "Copy items into destination group's folder" is not selected. i encountered the same problem, and this fixed it.

Answer 3

I don't know if it's causing the problem, but I wouldn't do:

self.view = mapView_;

Just add the mapView_ as a subview, like:

[self.view addSubview:mapView_];

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In general EXC_BAD_ACCESS crashes are caused when you are mismanaging memory (eg an object is being deallocated prematurely). Try to find out what object the crash is happening on.

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Create your buttons in code, not from the xib as IBOutlets. Otherwise they are not loaded since you are not using the xib.

Answer 4

Use this code when you use Google map and then check its not crash when you navigate to another screen.

- (void)dealloc {
[super dealloc];
[mapView_ removeObserver:self
              forKeyPath:@"myLocation"
                 context:NULL];
}