标签:
UIViewController的生命周期:
1、运行APP
2、- (void)loadView
{
[super loadView];
}
3、- (void)viewDidLoad
{
[super viewDidLoad];
}
4、- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
5、 - (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
6、 - (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
7、 - (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
8、- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
1 UILabel标签: 2 3 #import <UIKit/UIKit.h> 4 5 @interface FirstViewController : UIViewController 6 7 @property (nonatomic, strong) UILabel *label; 8 9 @end 10 11 12 - (void)viewDidLoad 13 { 14 [super viewDidLoad]; 15 _label =[[UILabel alloc] initWithFrame:CGRectMake(100, 50, 220, 40)]; 16 _label.text = @"欢迎大家学习ios软件开发"; 17 _label.textColor = [UIColor redColor]; 18 [self.view addSubview:_label]; 19 20 }
1 UIButton和UILable交互 2 3 #import "FirstViewController.h" 4 #import "GlobalDefine.h" 5 #import "SecondViewController.h" 6 7 @interface FirstViewController () 8 9 @end 10 11 @implementation FirstViewController 12 13 - (void)loadView 14 { 15 [super loadView]; 16 17 } 18 19 - (void)viewDidLoad 20 { 21 [super viewDidLoad]; 22 _label =[[UILabel alloc] initWithFrame:CGRectMake(100, 50, 220, 40)]; 23 _label.text = @"欢迎大家学习ios软件开发"; 24 _label.tag = 1; 25 _label.textColor = [UIColor redColor]; 26 [self.view addSubview:_label]; 27 28 UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; 29 button.frame = CGRectMake(SCREENWIDTH - 90, SCREENHEIGHT - 60, 80, 40); 30 [button setTitle:@"下一页" forState:UIControlStateNormal]; 31 [self.view addSubview:button]; 32 33 //跳转 34 [button addTarget:self action:@selector(next:) forControlEvents:UIControlEventTouchUpInside]; 35 } 36 37 - (void)next:(id)sender 38 { 39 SecondViewController *tempVC = [[SecondViewController alloc] init]; 40 41 [self presentViewController:tempVC animated:YES completion:nil]; 42 } 43 44 - (void)viewWillAppear:(BOOL)animated 45 { 46 [super viewWillAppear:animated]; 47 if (_label.tag != 1) 48 { 49 _label.text = @"HAHAHAHA"; 50 } 51 else 52 _label.tag = 0; 53 54 } 55 56 #import "SecondViewController.h" 57 #import "GlobalDefine.h" 58 59 @interface SecondViewController () 60 61 @end 62 63 @implementation SecondViewController 64 65 - (void)viewDidLoad { 66 [super viewDidLoad]; 67 68 69 UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; 70 button.frame = CGRectMake(20, 20, 50, 40); 71 [button setTitle:@"返回" forState:UIControlStateNormal]; 72 73 [button setTitleColor:[UIColor yellowColor] forState:UIControlStateNormal]; 74 75 [self.view addSubview:button]; 76 77 //跳转 78 [button addTarget:self action:@selector(next:) forControlEvents:UIControlEventTouchUpInside]; 79 } 80 81 - (void)next:(id)sender 82 { 83 84 [self dismissViewControllerAnimated:YES completion:nil]; 85 }
1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 2 3 self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 4 self.window.rootViewController = [[ViewController alloc] init]; 5 self.window.backgroundColor = [UIColor grayColor]; 6 [self.window makeKeyAndVisible]; 7 8 return YES; 9 } 10 11 #import <UIKit/UIKit.h> 12 13 @interface ViewController : UIViewController 14 15 @property (nonatomic, strong) UILabel *label; 16 @property (nonatomic, strong) UIButton *button; 17 18 @end 19 20 #import "ViewController.h" 21 #import "GlobalDefine.h" 22 #import "SecondViewController.h" 23 24 @interface ViewController () 25 26 @end 27 28 @implementation ViewController 29 30 - (void)viewDidLoad 31 { 32 [super viewDidLoad]; 33 _label = [[UILabel alloc] initWithFrame:CGRectMake(SCREENWIDTH / 2 - 150, SCREENHEIGHT / 2 - 15, 300, 30)]; 34 _label.text = @"北京,你好!HELLO"; 35 _label.tag = 1; 36 _label.textColor = [UIColor whiteColor]; 37 _label.font = [UIFont systemFontOfSize:22]; 38 _label.font = [UIFont boldSystemFontOfSize:23]; 39 _label.font = [UIFont italicSystemFontOfSize:25]; 40 _label.textAlignment = NSTextAlignmentCenter; 41 [self.view addSubview:_label]; 42 43 _button = [UIButton buttonWithType:UIButtonTypeSystem]; 44 [_button setTitle:@"Next" forState:UIControlStateNormal]; 45 _button.frame = CGRectMake(SCREENWIDTH - 80, SCREENHEIGHT - 50, 60, 30); 46 [_button setTitleColor:[UIColor yellowColor] forState:UIControlStateNormal]; 47 _button.titleLabel.font = [UIFont systemFontOfSize:20];//设置按钮字体大小 48 [self.view addSubview:_button]; 49 50 //跳转 51 [_button addTarget:self action:@selector(next:) forControlEvents:UIControlEventTouchUpInside]; 52 } 53 54 - (void)next:(id)sender 55 { 56 SecondViewController *tempVC = [[SecondViewController alloc] init]; 57 [self presentViewController:tempVC animated:YES completion:nil]; 58 } 59 60 - (void)viewWillAppear:(BOOL)animated 61 { 62 if (_label.tag != 1) 63 { 64 _label.text = @"VIP"; 65 } 66 else 67 { 68 _label.tag = 0; 69 } 70 } 71 72 - (void)didReceiveMemoryWarning { 73 [super didReceiveMemoryWarning]; 74 // Dispose of any resources that can be recreated. 75 } 76 77 @end 78 79 #import "SecondViewController.h" 80 #import "GlobalDefine.h" 81 82 @interface SecondViewController () 83 84 @end 85 86 @implementation SecondViewController 87 88 - (void)viewDidLoad { 89 [super viewDidLoad]; 90 UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(SCREENWIDTH / 2 - 130, SCREENHEIGHT / 2 - 20, 260, 40)]; 91 label.font = [UIFont systemFontOfSize:21]; 92 label.text = @"IOS is so easy! most of practice"; 93 label.textColor = [UIColor greenColor]; 94 [self.view addSubview:label]; 95 96 UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; 97 button.frame = CGRectMake(SCREENWIDTH - 100, SCREENHEIGHT - 50, 80, 30); 98 [button setTitle:@"返回" forState:UIControlStateNormal]; 99 [button setTintColor:[UIColor whiteColor]]; 100 button.titleLabel.font = [UIFont systemFontOfSize:16]; 101 [self.view addSubview:button]; 102 103 //跳转 104 [button addTarget:self action:@selector(back:) forControlEvents:UIControlEventTouchUpInside]; 105 106 } 107 108 - (void)back:(id)sender 109 { 110 [self dismissViewControllerAnimated:YES completion:nil]; 111 } 112 113 - (void)didReceiveMemoryWarning { 114 [super didReceiveMemoryWarning]; 115 // Dispose of any resources that can be recreated. 116 } 117 118 /* 119 #pragma mark - Navigation 120 121 // In a storyboard-based application, you will often want to do a little preparation before navigation 122 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { 123 // Get the new view controller using [segue destinationViewController]. 124 // Pass the selected object to the new view controller. 125 } 126 */ 127 128 @end 129 130 131 #ifndef GlobalDefine_h 132 #define GlobalDefine_h 133 134 #define SCREENWIDTH [UIScreen mainScreen].bounds.size.width 135 #define SCREENHEIGHT [UIScreen mainScreen].bounds.size.height 136 137 #endif /* GlobalDefine_h */
标签:
原文地址:http://www.cnblogs.com/songlei0601/p/5769286.html