053点击按钮后改变按钮的文字

1 #import <UIKit/UIKit.h>
2 
3 @interface ViewController : UIViewController
4 @property (strong, nonatomic) UIButton *btnState;
5 
6 @end

 1 #import "ViewController.h"
 2 
 3 @interface ViewController ()
 4 
 5 - (void)disableStateSwitch:(UISwitch *)sender;
 6 @end
 7 
 8 @implementation ViewController
 9 
10 - (void)viewDidLoad {
11     [super viewDidLoad];
12     self.view.backgroundColor = [UIColor whiteColor];
13     self.navigationItem.title = @"点击按钮后改变按钮的文字";
14     UISwitch *swtDisableState = [[UISwitch alloc] init];
15     swtDisableState.on = YES;
16     [swtDisableState addTarget:self action:@selector(disableStateSwitch:) forControlEvents:UIControlEventValueChanged];
17     UIBarButtonItem *barBtnDisableState = [[UIBarButtonItem alloc] initWithCustomView:swtDisableState];
18     [self setToolbarItems:@[barBtnDisableState] animated:YES];
19     
20     _btnState = [UIButton buttonWithType:UIButtonTypeCustom];
21     _btnState.frame = CGRectMake(0, 0, 200, 60);
22     _btnState.center = self.view.center;
23     _btnState.backgroundColor = [UIColor colorWithRed:0.513 green:0.894 blue:1.000 alpha:1.000];
24     _btnState.layer.masksToBounds = YES;
25     _btnState.layer.cornerRadius = 10.0;
26     _btnState.layer.borderColor = [UIColor colorWithRed:1.000 green:0.572 blue:0.894 alpha:1.000].CGColor;
27     _btnState.layer.borderWidth = 2.0;
28     //设置按钮标题字体及阴影颜色
29     _btnState.titleLabel.font = [UIFont boldSystemFontOfSize:22];
30     _btnState.titleLabel.shadowOffset = CGSizeMake(2.0, 2.0);
31     //设置普通状态下的显示特征
32     [_btnState setTitle:@"点我" forState:UIControlStateNormal];
33     [_btnState setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
34     [_btnState setTitleShadowColor:[UIColor grayColor] forState:UIControlStateNormal];
35     //设置按钮被触摸时，即高亮状态下的显示特征
36     [_btnState setTitle:@"变样子了" forState:UIControlStateHighlighted];
37     [_btnState setTitleColor:[UIColor brownColor] forState:UIControlStateHighlighted];
38     [_btnState setTitleShadowColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
39     //设置按钮非活性（无效）状态下的显示特征
40     [_btnState setTitle:@"禁用按钮了" forState:UIControlStateDisabled];
41     [_btnState setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];
42     [_btnState setTitleShadowColor:[UIColor blackColor] forState:UIControlStateDisabled];
43     [self.view addSubview:_btnState];
44 }
45 
46 - (void)didReceiveMemoryWarning {
47     [super didReceiveMemoryWarning];
48     // Dispose of any resources that can be recreated.
49 }
50 
51 - (void)viewWillAppear:(BOOL)animated {
52     [super viewWillAppear:animated];
53     [self.navigationController setNavigationBarHidden:NO animated:animated];
54     [self.navigationController setToolbarHidden:NO animated:animated];
55 }
56 
57 - (void)disableStateSwitch:(UISwitch *)sender {
58     _btnState.enabled = sender.on;
59 }
60 
61 @end

1 #import <UIKit/UIKit.h>
2 
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 @property (strong, nonatomic) UIWindow *window;
5 @property (strong, nonatomic) UINavigationController *navigationController;
6 
7 @end

 1 #import "AppDelegate.h"
 2 #import "ViewController.h"
 3 
 4 @interface AppDelegate ()
 5 @end
 6 
 7 @implementation AppDelegate
 8 
 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
10     _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
11     ViewController *viewController = [[ViewController alloc] init];
12     _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
13     _window.rootViewController = _navigationController;
14     [_window addSubview:_navigationController.view];
15     [_window makeKeyAndVisible];
16     return YES;
17 }
18 
19 - (void)applicationWillResignActive:(UIApplication *)application {
20 }
21 
22 - (void)applicationDidEnterBackground:(UIApplication *)application {
23 }
24 
25 - (void)applicationWillEnterForeground:(UIApplication *)application {
26 }
27 
28 - (void)applicationDidBecomeActive:(UIApplication *)application {
29 }
30 
31 - (void)applicationWillTerminate:(UIApplication *)application {
32 }
33 
34 @end