GMSPlacePicker iOS 9问题 - ios - EXC_BAD_ACCESS

Question

在iOS 9中，一旦我们按下后退按钮而没有在选择器视图上选择任何位置，GMSPlacePicker就会崩溃，同时适用于iOS 8。

错误

  

*** - [UIWindow _shouldAnimatePropertyWithKey：]：发送到解除分配的实例的消息

代码

@interface GMSViewController ()

@property(nonatomic,strong) GMSPlacePicker *placePicker;

@end

@implementation GMSViewController{}

- (instancetype)init {
if ((self = [super init])) {
    CLLocationCoordinate2D southWestSydney = CLLocationCoordinate2DMake(-33.8659, 151.1953);
    CLLocationCoordinate2D northEastSydney = CLLocationCoordinate2DMake(-33.8645, 151.1969);
    GMSCoordinateBounds *sydneyBounds =
    [[GMSCoordinateBounds alloc] initWithCoordinate:southWestSydney coordinate:northEastSydney];
    GMSPlacePickerConfig *config =
    [[GMSPlacePickerConfig alloc] initWithViewport:sydneyBounds];
    _placePicker = [[GMSPlacePicker alloc] initWithConfig:config];
}
return self;}

- (void)viewDidLoad {
[super viewDidLoad];
UITextView *textView = [[UITextView alloc] initWithFrame:self.view.bounds];
textView.delegate = self;
textView.editable = NO;
[self.view addSubview:textView];
__weak UITextView *weakResultView = textView;
[_placePicker pickPlaceWithCallback:^(GMSPlace *place, NSError *error) {
    UITextView *resultView = weakResultView;
    if (resultView == nil) {
        return;
    }
    if (place) {
        NSMutableAttributedString *text =
        [[NSMutableAttributedString alloc] initWithString:[place description]];
        [text appendAttributedString:[[NSAttributedString alloc] initWithString:@"\n\n"]];
        [text appendAttributedString:place.attributions];
        resultView.attributedText = text;
    } else if (error) {
        resultView.text =
        [NSString stringWithFormat:@"Place picking failed with error: %@", error];
    } else {
        resultView.text = @"Place picking cancelled.";
    }
}];}

有人可以帮忙吗？