Ios 在if语句中，PushViewController会中断我的程序
我已经在另一个类中创建了一个带有根视图控制器（登录屏幕）的导航控制器。当我点击登录按钮时，我想让它推到仪表板视图控制器。这是我的密码Ios 在if语句中，PushViewController会中断我的程序,ios,objective-c,xcode,uinavigationcontroller,pushviewcontroller,Ios,Objective C,Xcode,Uinavigationcontroller,Pushviewcontroller,我已经在另一个类中创建了一个带有根视图控制器（登录屏幕）的导航控制器。当我点击登录按钮时，我想让它推到仪表板视图控制器。这是我的密码 - (IBAction)logInHit:(id)sender { if (passWord == true) { DashBoardViewController *dash = [[DashBoardViewController alloc] initWithNibName:@"DashBoardViewController" bund
- (IBAction)logInHit:(id)sender {
if (passWord == true) {
DashBoardViewController *dash = [[DashBoardViewController alloc] initWithNibName:@"DashBoardViewController" bundle:nil];
[self.navigationController pushViewController:dash animated:YES];
}
else if (passWord == false){
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setTitle:@"Incorrect Password"];
[alert setMessage:@""];
[alert setDelegate:self];
[alert addButtonWithTitle:@"Try Again"];
[alert show];
}
}
NavigationViewController *navView;
我检查了你的代码，工作完全正常。。。 但您必须在appDelegate方法中设置以下内容
LogInViewController *loginVC = [[LogInViewController alloc] initWithNibName:@"LogInViewController" bundle:nil];
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:loginVC];
self.window.rootViewController = navController;
我在创建-（iAction）textEnd:（id）发送方{}时遇到了相同的错误方法并链接到UITextfield以编辑来自file Inputer的DidEnd操作，然后我从.m文件中删除了整个方法，并且在单击登录按钮时出现了相同的错误，因此请检查您的所有链接是否都有可用的链接方法。首先，您必须在appDelegate中设置根视图控制器，如
LogInViewController *loginVC = [[LogInViewController alloc] initWithNibName:@"LogInViewController" bundle:nil];
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:loginVC];
self.window.rootViewController = navController;
- (IBAction)logInHit:(id)sender {
if (passWord ) {
DashBoardViewController *dash = [[DashBoardViewController alloc] initWithNibName:@"DashBoardViewController" bundle:nil];
[self.navigationController pushViewController:dash animated:YES];
}
else {
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setTitle:@"Incorrect Password"];
[alert setMessage:@""];
[alert setDelegate:self];
[alert addButtonWithTitle:@"Try Again"];
[alert show];
}
}
您使用的是xib还是故事板请指导我。你能调试一下你的公司吗
- (IBAction)logInHit:(id)sender {
if (passWord ) {
DashBoardViewController *dash = [[DashBoardViewController alloc] initWithNibName:@"DashBoardViewController" bundle:nil];
[self.navigationController pushViewController:dash animated:YES];
}
else {
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setTitle:@"Incorrect Password"];
[alert setMessage:@""];
[alert setDelegate:self];
[alert addButtonWithTitle:@"Try Again"];
[alert show];
}
}