所以我注意到在iPad上的iOS8 beta 3(更新:仍然发生在iOS 11.2中),当尝试从a的委托方法中呈现视图控制器时UIActionSheet,"没有"发生并且日志消息输出到调试控制台,说明在转换警报控制器时尝试演示:
Warning: Attempt to present <UIViewController: 0x...> on <ViewController: 0x...> which is already presenting <UIAlertController: 0x...>
我将我的Xcode更新为7,将Facebook更新为4.6 sdk.
这是我的警告:
Warning: Attempt to present <FBSDKContainerViewController: 0x159337700> on <UIAlertController: 0x159262700> whose view is not in the window hierarchy!
在我的项目中BitCode是NO - 因为如果我把它变为是,我得到了这个错误:
ld:'/Users/MyName/Desktop/MyProjectName/ProjectName/ProjectName/Resources/Frameworks/Fabric.framework/Fabric(Fabric.o)' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target. for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
这是解析方法:
-(void)signInWithFacebookClicked
{
NSArray *permissions = [NSArray arrayWithObjects:@"email",@"user_friends", nil];
[PFFacebookUtils logInInBackgroundWithReadPermissions:permissions block:^(PFUser …