Question

我有一个Pi,与一个UITextInput场和一个纽芬兰州开立了问答书。当纽芬兰人要求使用代表方法时,应当对投入进行验证,并成功执行,或再次就失败发表《国际律师组织书》。

Now I reduced it to this litte test class with two UIAlertViews. It is always possible to open the other view but when I hit the button it asks for the screen remains empty.

#import "Yesorno.h"

@implementation Yesorno
@synthesize promptYES, promptNO;

- (id)init {
    self = [super init];
    if (self) {
        promptYES = [[UIAlertView alloc] init];
        [promptYES setDelegate:self];
        [promptYES setTitle:@"Press YES"];
        [promptYES addButtonWithTitle:@"YES"];
        [promptYES addButtonWithTitle:@"NO"];
        promptNO = [[UIAlertView alloc] init];
        [promptNO setDelegate:self];
        [promptNO setTitle:@"Press NO!"];
        [promptNO addButtonWithTitle:@"YES"];
        [promptNO addButtonWithTitle:@"NO"];
    }
    return self;
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0)
        [promptYES show];
    else
        [promptNO show];
}

@end

Edit: The AppDelegate. 现在确实是一个非常基本的申请,没有任何观点的控制者。

#import "AppDelegate.h"
#import "Yesorno.h"

@implementation AppDelegate

@synthesize window, yesorno;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    [self.window makeKeyAndVisible];
    yesorno = [[Yesorno alloc] init];
    [yesorno.promptYES show];
    return YES;
}

@end

我如何再次表明同样的辩词? 感谢。

Answer 1

您应采用<条码>didDismissWithButtonIndex 代表方法:

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0)
        [promptYES show];
    else
        [promptNO show];
}

Answer 2

您需要重新实施<条码>-(避免)alertView:AlertView * 点击的观点 ButtonAtIndex:NSInteger)buttonIndex: 代表方法。

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
     if(alertView == promptYES)
     {
        if (buttonIndex == 0)
          [promptYES show];
     }
     else if(alertView == promptNO)
     {
         if (buttonIndex == 0)
          [promptNO show];
     }
}

友情链接