iOS 退出键盘的方法

键盘现在有个框架叫IQKeyboardManager十分吊, 如果你不想集成这个框架, 那么可以用我这个方法. 大体方式是: 放出全局通知, 监听键盘的弹出与退出, 在弹出时, 在键盘的上方加一个退出按钮, 全局只设置一次, 发一次通知就可以满足所有的textfiled, 具体代码如下:

AppDelegate.h文件

 1 //
 2 //  AppDelegate.h
 3 //  HeHuJianKang
 4 //
 5 //  Created by zzt on 16/12/7.
 6 //  Copyright © 2016年 zzt. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 
11 @interface AppDelegate : UIResponder <UIApplicationDelegate>
12 
13 @property (strong, nonatomic) UIWindow *window;
14 //点击退出键盘的按钮
15 @property (nonatomic, weak)UIButton *closeKeyBoard;
16 
17 @end

 

AppDelegate.m文件

 1 //
 2 //  AppDelegate.m
 3 //  HeHuJianKang
 4 //
 5 //  Created by zzt on 16/12/7.
 6 //  Copyright © 2016年 zzt. All rights reserved.
 7 //
 8 
 9 #import "AppDelegate.h"
10 #import "ZTTabbarViewController.h"
11 @interface AppDelegate ()    
12 @end
13 
14 @implementation AppDelegate
15     
16 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
17    
18     
19     //设置根控制器
20     self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
21     ZTTabbarViewController *tab = [[ZTTabbarViewController alloc]init];
22     self.window.rootViewController = tab;
23     [self.window makeKeyAndVisible];
24 
25     //键盘退出按钮的添加, 全局的通知, 监测键盘的通知
26     //添加自动退出键盘的按钮
27     UIButton *closeKeyBoard = [[UIButton alloc]init];
28     _closeKeyBoard = closeKeyBoard;
29     _closeKeyBoard.frame = CGRectMake(0, MAXFLOAT, ZTScreenW, 30) ;
30     //发出通知
31     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
32     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHidden:) name:UIKeyboardWillHideNotification object:nil];
33 
34     return YES;
35 }
36 
37 //实现通知的方法,键盘将要隐藏
38 -(void)keyboardWillHidden:(NSNotification *)notification {
39     [UIView animateWithDuration:1.0 animations:^{
40         _closeKeyBoard.frame = CGRectMake(0, MAXFLOAT, ZTScreenW, _closeKeyBoard.zt_height);
41     }];
42 }
43     
44 //实现通知的方法,键盘将要显示
45 - (void)keyboardWillShow:(NSNotification *)notification {
46     //这样就拿到了键盘的位置大小信息frame，然后根据frame进行高度处理之类的信息
47     CGRect frame = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
48     CGFloat keyboardH = frame.size.height;
49     
50     // 取得键盘的动画时间，这样可以在视图上移的时候更连贯
51     double duration = [[notification.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
52     
53     [UIView animateWithDuration:duration animations:^{
54         UIWindow * window=[[[UIApplication sharedApplication] delegate] window];
55         _closeKeyBoard.frame = CGRectMake(0, ZTScreenH - keyboardH - _closeKeyBoard.zt_height, ZTScreenW,_closeKeyBoard.zt_height);
56         _closeKeyBoard.backgroundColor = [UIColor whiteColor];
57         [_closeKeyBoard setBackgroundImage:[UIImage imageNamed:@"pack-up"] forState:UIControlStateNormal];
58         [_closeKeyBoard setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
59         [window addSubview:_closeKeyBoard];
60         //添加事件
61         [_closeKeyBoard addTarget:self action:@selector(closeKeyboard) forControlEvents:UIControlEventTouchUpInside];
62     }];
63 }
64     
65 #pragma mark - 收起键盘
66 - (void)closeKeyboard {
67     //[self.searchBar resignFirstResponder];
68     [self.window endEditing:YES];
69 }

就可以了.

但是遮挡问题自己还要在监听键盘计算键盘的高度之后, 再确定textfiled的位置之后, 再相应修改view的Y值, 这样并不是一个好方法, IQKeyboardManager框架只要一句话都搞定了, 自己思量.

posted on 2017-02-24 16:48  loveDoDream_zzt  阅读(436)  评论(0)  编辑  收藏  举报

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