代码：
?
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//为textField增加键盘事件
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(addKeyboardNoti) name:UITextFieldTextDidBeginEditingNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(removeKeyboardNoti) name:UITextFieldTextDidEndEditingNotification object:nil];
}
#pragma -mark -keyboard notificatin
//键盘事件
- (void)keyboardWillShow:(NSNotification *)notification {
NSDictionary *info = [notification userInfo];
// keyboardHeight 为键盘高度
CGSize keyboardSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
[self animateViewWithKeyboardHeight:keyboardSize.height];
}
- (void)keyboardWillHide:(NSNotification *)notification {
[self animateViewWithKeyboardHeight:0.0];
}
- (void)animateViewWithKeyboardHeight:(CGFloat)keyboardHeight {
NSTimeInterval animationDuration = 0.3f;
CGFloat height = self.view.bounds.size.height;
CGFloat width = self.view.bounds.size.width;
CGFloat topSize = 0.0;
CGFloat viewH = self.view.frame.size.height-64;
CGFloat deviceHeight = [UIScreen mainScreen].bounds.size.height;
CGFloat animateH = deviceHeight - viewH - keyboardHeight;
if (animateH >= 0) {
topSize = 0;
CGRect toRect = CGRectMake(0, topSize, width, height);
self.view.frame = toRect;
} else {
topSize = animateH;
CGRect toRect = CGRectMake(0, topSize, width, height);
[UIView animateWithDuration:animationDuration animations:^{
self.view.frame = toRect;
}];
}
}
#pragma -mark -UITextFieldText Notification
//增加键盘事件
-(void)addKeyboardNoti
{
NSLog(@"------addKeyboardNoti-------");
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}
//移除键盘事件
-(void)removeKeyboardNoti
{
NSLog(@"------removeKeyboardNoti---------");
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
|
总结
以上所述是小编给大家介绍的iOS中只让textField使用键盘通知的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对快网idc网站的支持！
相关文章
猜你喜欢
- ASP.NET本地开发时常见的配置错误及解决方法？ 2025-06-10
- ASP.NET自助建站系统的数据库备份与恢复操作指南 2025-06-10
- 个人网站服务器域名解析设置指南：从购买到绑定全流程 2025-06-10
- 个人网站搭建：如何挑选具有弹性扩展能力的服务器？ 2025-06-10
- 个人服务器网站搭建：如何选择适合自己的建站程序或框架？ 2025-06-10
