Question

我在xcode中声明了一个我声明了

的常量文件

#define MyAppDelegate ((AppDelegate *)[[UIApplication sharedApplication] delegate])

然后在需要时使用MyAppDelegate。现在我收到的错误是MyAppDelegate未被声明，但是当我运行这个应用程序时。它运行正常，并向我显示错误。

#import "SearchResultViewController.h"
#import "UIImageView+AFNetworking.h"
#import "SearchResultCell.h"

@interface SearchResultViewController ()

@end

 @implementation SearchResultViewController
 @synthesize tempArray;
 - (id)initWithStyle:(UITableViewStyle)style {
self = [super initWithStyle:style];
if (self) {
    // Custom initialization
}
return self;
}

- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *btnHelp = [[UIBarButtonItem alloc] initWithTitle:@"Help" style:UIBarButtonItemStylePlain target:self action:@selector(btnHelpAction:)];
self.navigationItem.rightBarButtonItem=btnHelp;
self.title = @"Search Result";
tempArray=[[NSMutableArray alloc]init];
tempArray=[MyAppDelegate.searchResultArray mutableCopy];   // showing me error
;//

}

Answer 1

您需要导入头文件。

#import "AppDelegate.h"

Answer 2

只需将其创建为

之类的实例变量即可

YourAppDelegate *appDelegate = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
tempArray=[appDelegate.searchResultArray mutableCopy];

别忘了导入 YourAppDelegate.h

#import "YourAppDelegate.h"

Xcode在精细代码中显示错误

2 个答案: