UIActivityViewController在iOS 7中的奇怪行为

Question

我使用了UIActivityViewController和共享选项。

NSURL *url =[NSURL URLWithString:@"google.com"];

UIImage *img = [UIImage imageNamed:@"myImage"];


NSMutableArray *ar2 = [NSMutableArray arrayWithObjects:UIActivityTypePostToWeibo, UIActivityTypeSaveToCameraRoll, UIActivityTypeMessage, UIActivityTypePrint, UIActivityTypeAssignToContact, nil];

NSArray *itemsToShare =  @[textToShare,url];

UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:itemsToShare applicationActivities:nil];
[activityVC setValue:@"Sample - Share" forKey:@"subject"];
activityVC.excludedActivityTypes = ar2;
[self presentViewController:activityVC animated:YES completion:NULL];

但它显示有一些白色视图和AirDrop名称为“null”。任何人都可以建议我一个解决方案......

Answer 1

我测试了你的代码，它对我来说很好。我正在使用iPod5 touch和iOS 7.1.2 我有一点建议。尝试延迟调用您的代码。像：

[self performSelector:@selector(shareActivityView) withObject:nil afterDelay:0.5];

您的方法shareActivityView似乎：

-(void)shareActivityView
{
    NSURL *url =[NSURL URLWithString:@"google.com"];

    UIImage *img = [UIImage imageNamed:@"myImage"];


    NSMutableArray *ar2 = [NSMutableArray arrayWithObjects:UIActivityTypePostToWeibo,       UIActivityTypeSaveToCameraRoll, UIActivityTypeMessage, UIActivityTypePrint,  UIActivityTypeAssignToContact, nil];

    NSArray *itemsToShare =  @[textToShare,url];

    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:itemsToShare applicationActivities:nil];
    [activityVC setValue:@"Sample - Share" forKey:@"subject"];
    activityVC.excludedActivityTypes = ar2;
    [self presentViewController:activityVC animated:YES completion:NULL];
}

这很奇怪，但有时却有效。