動態產生 UIViewController (三)

前一篇的實作使用了Navigation Bar來做聯結，現在要嘗試不要使用Navigation Bar，亦不用Segue。

實作如下
1. 開啓一個新的專案

2. 一樣加入一個新的UIViewController 的Class檔

3. 在storyboard上加入一個Button，來作啓動

4. 現在先從mainViewController.h開始
#import <UIKit/UIKit.h>
#import "secondViewController.h"

@interface mainViewController : UIViewController

@property (nonatomic) secondViewController  *secondView;

@end

5.在mainViewController.m加入啓動second ViewController程式碼
#import "mainViewController.h"

@interface mainViewController ()

@end

@implementation mainViewController

@synthesize secondView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)toSecondViewController:(id)sender {
    secondView = [[secondViewController alloc] init];
   
    // secondView.view.backgroundColor = [UIColor yellowColor];
   
    NSString *Stringvalue = [NSString stringWithFormat:@"%d",345];
   
    [secondView setValue:Stringvalue forKey:@"transferString"];
   
    [self presentViewController:secondView animated:YES completion:^{}];
}
@end





 

6. 在secondViewController.h加入所需傳送變數及呼叫的Function定義。
#import <UIKit/UIKit.h>

@interface secondViewController : UIViewController
{
    NSString *transferString;
}

- (void) goBackMainViewController;

@end


7. 在secondViewController.m加入顯示及回歸的程式碼
#import "secondViewController.h"

@interface secondViewController ()

@end

@implementation secondViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    NSLog(@"%@", transferString);
   
    self.view.backgroundColor = [UIColor yellowColor];
   
    UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [aButton setFrame:CGRectMake(300, 300, 75, 37)];
    aButton.backgroundColor = [UIColor  redColor];
    [aButton setTitle:transferString forState:UIControlStateNormal];
   
    [aButton addTarget:self action:@selector(goBackMainViewController) forControlEvents:UIControlEventTouchUpInside];
   
    [self.view addSubview:aButton];
   
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) goBackMainViewController
{
    
    [self dismissViewControllerAnimated:YES completion:^{}];
}
@end



8. 顯示結果