Question

我试图在其中声明一个包含几个块的函数，当我从viewdidload方法调用该函数时，这些参数应该按顺序执行

-(void) alertViewOn:(UILabel*)LabelTextX :(UIButton*)ButtonA :(UIButton*)ButtonB :(UIImage*)ImageX {


UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Enter Pet Name" message:nil preferredStyle:UIAlertControllerStyleAlert];

//Show TextField
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField)
 {
     textField.placeholder = NSLocalizedString(@"Pet Name", @"Name");
 }];

//Set Ok Button
UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

    UITextField *textField = alert.textFields.firstObject;
    self.labelText2.text   = textField.text;

}];
[alert addAction:ok];

//Set ADD Button
UIAlertAction* addPet = [UIAlertAction actionWithTitle:@"Add More" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

    self.button4.hidden = NO;
    self.button5.hidden = NO;
    self.image2.hidden = NO;

}];
[alert addAction:addPet];

//Set Cancel Button
UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

}];
[alert addAction:cancel];
[self presentViewController:alert animated:YES completion:nil];
}

这里我想将参数LabelTextX传递给labelText2; ButtonA到button4; ButtonY到button5和ImageX到image2。我在objective-c中是全新的，甚至宣布一个函数也很困难！请任何善良的人帮助......

Answer 1

-(void) alertViewOn:(UILabel*)LabelTextX :(UIButton*)ButtonA :   (UIButton*)ButtonB :(UIImageView*)ImageX {

UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Enter Pet Name" message:nil preferredStyle:UIAlertControllerStyleAlert];

//Show TextField
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField)
 {
     textField.placeholder = NSLocalizedString(@"Pet Name", @"Name");
 }];

//Set Ok Button
UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

    UITextField *textField = alert.textFields.firstObject;
    LabelTextX.text   = textField.text;

}];

[alert addAction:ok];

//Set ADD Button
UIAlertAction* addPet = [UIAlertAction actionWithTitle:@"Add More" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

    ButtonA.hidden = NO;
    ButtonB.hidden = NO;
    ImageX.hidden = NO;

}];

[alert addAction:addPet];

//Set Cancel Button
UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action){

    [alert dismissViewControllerAnimated:YES completion:nil];

}];

[alert addAction:cancel];
[self presentViewController:alert animated:YES completion:nil];
}

然后调用这个函数......

- (IBAction)buttonPressed15:(id)sender {
         [self alertViewOn:_labelText15 :_button30 :_button31 :_image15];
}

如何在objective-c

1 个答案: