Xcode 错误：预期标识符
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Xcode error : Expected identifier
提问by James Kerstan
I Get an error stating "Expected Identifier" at this line of code
我在这行代码中收到一条错误消息，指出“预期标识符”
UINavigationController *navController1 = [[[UINavigationController alloc] initWithRootViewController:viewController4]];
This code is placed in the application Delegate as follows
这段代码放在应用Delegate中如下
#import "AppDelegate.h"
#import "FirstViewController.h"
#import "SecondViewController.h"
#import "ParkTable.h"
#import "TableTest.h"
@implementation AppDelegate
@synthesize window = _window;
@synthesize tabBarController = _tabBarController;
@synthesize ParkTableDel = _tableViewController;
@synthesize navController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
UITableViewController *viewController3 = [[ParkTable alloc] initWithNibName:@"ParkTable" bundle:nil];
UITableViewController *viewController4 = [[TableTest alloc] initWithNibName:@"TableTest" bundle:nil];
UINavigationController *navController1 = [[[UINavigationController alloc] initWithRootViewController:viewController4]];
self.tabBarController = [[UITabBarController alloc] init];
self.ParkTableDel = [[UITableViewController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController3, viewController4, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
// [...] Boilerplate code removed.
@end
I was wondering what i have to change to make it correct.
我想知道我必须改变什么才能使它正确。
回答by Luke
Could it be the extra set of parentheses? [ ]
可能是额外的一组括号吗？[ ]
回答by Freddy
As pointed out by Luke you have an extra set of parentheses.
正如 Luke 所指出的，你有一组额外的括号。
To correct the black screen try..
要纠正黑屏尝试..
[self.window addSubview: self.tabBarController.view]
Instead of ..
代替 ..
self.window.rootViewController = self.tabBarController;
回答by Mayank Kapoor
Had the same problem. It is probably the extra set of [] you have around your line of code.
有同样的问题。它可能是您的代码行周围的额外 [] 集。
