github: https://github.com/hellovoidworld/HVWWeibo
A.发微博界面：自定义UITextView
1.需求
- 用UITextView做一个编写微博的输入框
- 没有输入任何文本的时候显示占位文本
- 统一占位文本和正文的字体
2.思路
- 系统自带的输入控件有UITextField和UITextView两种
- UITextField：自带占位文本属性，不能换行
- UITextView：没有占位文本属性，能换行
- 这里我们选择UITextView进行改造
- 根据是否输入文本决定是否显示占位文本(placeholder)，可能使用代理或通知机制来监听文本输入，这里我们使用通知。因为设置代理只有一个，设为view本身不合理，这样就不能设置控制器代理了。
- 在UITextView中加入一个UILabel，专门用来显示placeholder
3.实现
自定义一个集成UITextView的控件
带有一个placeHolder属性
实现相关方法
1 //
2 // HVWComposeTextView.h
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/6.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import <UIKit/UIKit.h>
10
11 @interface HVWComposeTextView : UITextView
12
13 /** placeholder 占位文本 */
14 @property(nonatomic, copy) NSString *placeHolder;
15
16 @end
17
18 //
19 // HVWComposeTextView.m
20 // HVWWeibo
21 //
22 // Created by hellovoidworld on 15/2/6.
23 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
24 //
25
26 #import "HVWComposeTextView.h"
27
28 @interface HVWComposeTextView()
29
30 @property(nonatomic, strong) UILabel *placeHolderLabel;
31
32 @end
33
34 @implementation HVWComposeTextView
35
36 - (instancetype)initWithFrame:(CGRect)frame {
37 self = [super initWithFrame:frame];
38
39 if (self) {
40 // 可以拖曳
41 self.scrollEnabled = YES;
42 self.alwaysBounceVertical = YES;
43
44 // 添加placeHolderLabel
45 [self setupPlaceHolder];
46
47 // 设置默认字体
48 [self setFont:[UIFont systemFontOfSize:14]];
49
50 // 设置通知
51 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(inputtingText) name:UITextViewTextDidChangeNotification object:self];
52 }
53
54 return self;
55 }
56
57 /** 添加placeHolder */
58 - (void) setupPlaceHolder {
59 UILabel *placeHolderLabel = [[UILabel alloc] init];
60 self.placeHolderLabel = placeHolderLabel;
61
62 placeHolderLabel.textColor = [UIColor lightGrayColor];
63 placeHolderLabel.userInteractionEnabled = NO;
64 placeHolderLabel.numberOfLines = 0; // 自动换行
65 placeHolderLabel.backgroundColor = [UIColor clearColor];
66
67 [self addSubview:placeHolderLabel];
68 }
69
70 /** 设置子控件frame */
71 - (void)layoutSubviews {
72 [super layoutSubviews];
73
74 self.placeHolderLabel.x = 5;
75 self.placeHolderLabel.y = 8;
76
77 NSMutableDictionary *attr = [NSMutableDictionary dictionary];
78 attr[NSFontAttributeName] = self.placeHolderLabel.font;
79 CGFloat placeHolderWidth = self.width - 2 * self.placeHolderLabel.x;
80
81 CGRect tempRect = [self.placeHolderLabel.text boundingRectWithSize:CGSizeMake(placeHolderWidth, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:attr context:nil];
82 self.placeHolderLabel.size = tempRect.size;
83 }
84
85 - (void)setPlaceHolder:(NSString *)placeHolder {
86 self.placeHolderLabel.text = placeHolder;
87
88 // 重新计算frame，可能不会立即调用layoutSubviews
89 [self setNeedsLayout];
90 }
91
92 /** 重写setFont，更改正文font的时候也更改placeHolder的font */
93 - (void)setFont:(UIFont *)font {
94 [super setFont:font];
95 self.placeHolderLabel.font = font;
96
97 // 重新计算frame，可能不会立即调用layoutSubviews
98 [self setNeedsLayout];
99 }
100
101 - (void)dealloc {
102 // 注销通知监听
103 [[NSNotificationCenter defaultCenter] removeObserver:self];
104 }
105
106 /** 正在输入文本 */
107 - (void) inputtingText {
108 if (self.text.length) {
109 self.placeHolderLabel.hidden = YES;
110 } else {
111 self.placeHolderLabel.hidden = NO;
112 }
113 }
114
115 @end
在控制器中使用
1 // HVWComposeViewController.m
2 - (void)viewDidLoad {
3 [super viewDidLoad];
4 // Do any additional setup after loading the view.
5
6 // 初始化一些功能按钮
7 self.title = @"发微博";
8
9 self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"退出" style:UIBarButtonItemStylePlain target:self action:@selector(dismiss)];
10
11 // 添加自定义UITextView
12 HVWComposeTextView *composeView = [[HVWComposeTextView alloc] init];
13 self.composeView = composeView;
14 composeView.frame = self.view.bounds;
15 composeView.delegate = self;
16
17 composeView.placeHolder = @"分享点滴精彩阿里山的会计法律考试大姐夫；拉可接受的；浪费空间阿斯顿；离开房间啊；数量的会计法律；阿克苏交电费；拉可接受的分；垃圾可适当；浪费就卡死；老地方就卡死；懒得看积分；阿里快速的减肥；拉等级考试...";
18
19 [self.view addSubview:composeView];
20 }
B.使用代理监听UITextView的拖曳，缩回键盘
1 // HVWComposeViewController.m
2 #pragma mark - UIScrollViewDelegate
3 /** 开始拖曳 */
4 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
5 // 缩回键盘
6 [self.composeView resignFirstResponder];
7 }
整理一下“发微博”控制器代码：
1 //
2 // HVWComposeViewController.m
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/3.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import "HVWComposeViewController.h"
10 #import "HVWComposeTextView.h"
11
12 @interface HVWComposeViewController () <UITextViewDelegate, UIScrollViewDelegate>
13
14 @property(nonatomic, strong) HVWComposeTextView *composeView;
15
16 @end
17
18 @implementation HVWComposeViewController
19
20 - (void)viewDidLoad {
21 [super viewDidLoad];
22 // Do any additional setup after loading the view.
23
24
25 // 设置导航栏
26 [self setupNavigationBar];
27
28 // 添加自定义UITextView
29 [self setupTextView];
30
31 // 添加工具栏
32 [self setupToolBar];
33 }
34
35 /** 设置工具栏 */
36 - (void) setupToolBar {
37
38 }
39
40 /** 设置输入控件 */
41 - (void) setupTextView {
42 HVWComposeTextView *composeView = [[HVWComposeTextView alloc] init];
43 self.composeView = composeView;
44 composeView.frame = self.view.bounds;
45 composeView.delegate = self;
46
47 composeView.placeHolder = @"分享点滴精彩...";
48
49 [self.view addSubview:composeView];
50 }
51
52 /** 设置导航栏 */
53 - (void) setupNavigationBar {
54 // 标题
55 self.title = @"发微博";
56
57 // 导航栏左方按钮
58 self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"退出" style:UIBarButtonItemStylePlain target:self action:@selector(dismiss)];
59 }
60
61 - (void)viewDidAppear:(BOOL)animated {
62 // 自动弹出键盘
63 [self.composeView becomeFirstResponder];
64 }
65
66 - (void) dismiss {
67 [self.composeView resignFirstResponder];
68 [self dismissViewControllerAnimated:YES completion:nil];
69
70 }
71
72
73 #pragma mark - UIScrollViewDelegate
74 /** 开始拖曳 */
75 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
76 // 缩回键盘
77 [self.composeView resignFirstResponder];
78 }
79
80 @end
C.键盘上方的工具条
1.需求
紧贴在键盘上方的工具栏，可随键盘伸缩，始终可视
工具栏上的功能按钮有：照相机、相册、提到@、话题、表情
2.思路
自定义一个UIView，封装上述功能
使用代理监听按钮点击
监听键盘弹出缩回通知，使用transform移动工具条
3.实现
（1）自定义UIView
1 //
2 // HVWComposeToolBar.h
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/7.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import <UIKit/UIKit.h>
10
11 typedef enum {
12 HVWComposeToolBarButtonTagCamera, // 照相机
13 HVWComposeToolBarButtonTagPhotoLib, // 相册
14 HVWComposeToolBarButtonTagMention, // 提到@
15 HVWComposeToolBarButtonTagTrend, // 话题
16 HVWComposeToolBarButtonTagEmotion // 表情
17 } HVWComposeToolBarButtonTag;
18
19 @class HVWComposeToolBar;
20 @protocol HVWComposeToolBarDelegate <NSObject>
21
22 @optional
23 - (void) composeToolBar:(HVWComposeToolBar *) composeToolBar didButtonClicked:(HVWComposeToolBarButtonTag) tag;
24
25 @end
26
27 @interface HVWComposeToolBar : UIView
28
29 /** 代理 */
30 @property(nonatomic, weak) id<HVWComposeToolBarDelegate> delegate;
31
32 @end
1 //
2 // HVWComposeToolBar.m
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/7.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import "HVWComposeToolBar.h"
10
11 @implementation HVWComposeToolBar
12
13 - (instancetype)initWithFrame:(CGRect)frame {
14 self = [super initWithFrame:frame];
15
16 if (self) {
17 // 背景色
18 self.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithNamed:@"compose_toolbar_background"]];
19
20 // 添加按钮
21 [self addButtonWithIcon:@"compose_camerabutton_background" highlightedIcon:@"compose_camerabutton_background_highlighted" tag:HVWComposeToolBarButtonTagCamera];
22
23 [self addButtonWithIcon:@"compose_toolbar_picture" highlightedIcon:@"compose_toolbar_picture_highlighted" tag:HVWComposeToolBarButtonTagPhotoLib];
24
25 [self addButtonWithIcon:@"compose_mentionbutton_background" highlightedIcon:@"compose_mentionbutton_background_highlighted" tag:HVWComposeToolBarButtonTagMention];
26
27 [self addButtonWithIcon:@"compose_trendbutton_background" highlightedIcon:@"compose_trendbutton_background_highlighted" tag:HVWComposeToolBarButtonTagTrend];
28
29 [self addButtonWithIcon:@"compose_emoticonbutton_background" highlightedIcon:@"compose_emoticonbutton_background_highlighted" tag:HVWComposeToolBarButtonTagEmotion];
30 }
31
32
33 return self;
34 }
35
36 /** 添加一个按钮 */
37 - (void) addButtonWithIcon:(NSString *) icon highlightedIcon:(NSString *) highlightedIcon tag:(HVWComposeToolBarButtonTag) tag {
38 UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
39 [button setImage:[UIImage imageWithNamed:icon] forState:UIControlStateNormal];
40 [button setImage:[UIImage imageWithNamed:highlightedIcon] forState:UIControlStateHighlighted];
41 button.tag = tag;
42
43 // 按钮点击事件
44 [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
45
46 [self addSubview:button];
47 }
48
49 /** 设置frame */
50 - (void)layoutSubviews {
51 [super layoutSubviews];
52
53 CGFloat buttonWidth = self.width / self.subviews.count;
54
55 // 设置每个按钮
56 for (int i=0; i<self.subviews.count; i++) {
57 UIButton *button = self.subviews[i];
58
59 CGFloat buttonHeight = buttonWidth;
60 CGFloat buttonX = i * buttonWidth;
61 CGFloat buttonY = (self.height - buttonHeight) * 0.5;
62 button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
63 }
64 }
65
66 /** 按钮点击 */
67 - (void) buttonClicked:(UIButton *) button {
68 // 通知代理
69 if ([self.delegate respondsToSelector:@selector(composeToolBar:didButtonClicked:)]) {
70 [self.delegate composeToolBar:self didButtonClicked:button.tag];
71 }
72 }
73
74 @end
（2）在控制器上测试
1 // HVWComposeViewController.m
2 /** 设置工具栏 */
3 - (void) setupToolBar {
4 HVWComposeToolBar *toolBar = [[HVWComposeToolBar alloc] init];
5 toolBar.width = self.view.width;
6 toolBar.height = 44;
7 toolBar.delegate = self;
8
9 self.composeView.inputAccessoryView = toolBar;
10 }
（3）在控制器中调整工具条的位置
不要直接加载键盘的inputAccessoryView上，因为需要在键盘退出之后仍然显示在底部
所以独立设置位置，使用transform随着键盘移动
1 // HVWComposeViewController.m
2 /** 设置工具栏 */
3 - (void) setupToolBar {
4 HVWComposeToolBar *toolBar = [[HVWComposeToolBar alloc] init];
5 self.toolBar = toolBar;
6 toolBar.width = self.view.width;
7 toolBar.height = 44;
8 toolBar.delegate = self;
9
10 toolBar.x = 0;
11 // 在底部显示
12 toolBar.y = self.view.height - toolBar.height;
13
14 [self.view addSubview:toolBar];
15 }
16
17 /** 设置输入控件 */
18 - (void) setupTextView {
19 HVWComposeTextView *composeView = [[HVWComposeTextView alloc] init];
20 self.composeView = composeView;
21 composeView.frame = self.view.bounds;
22 composeView.delegate = self;
23
24 composeView.placeHolder = @"分享点滴精彩...";
25
26 [self.view addSubview:composeView];
27
28 // 监听键盘通知
29 // 键盘将弹出
30 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
31
32 // 键盘将缩回
33 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
34
35 // 添加图片显示区
36 [self setupImageDisplayView];
37 }
38
39 #pragma mark - 键盘通知处理
40 /** 键盘将弹出 */
41 - (void) keyboardWillShow:(NSNotification *) note {
42 // 键盘弹出需要时间
43 CGFloat duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
44
45 // 移动工具条
46 [UIView animateWithDuration:duration animations:^{
47 // 获取键盘高度
48 CGRect keyboardFrame = [note.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];
49 CGFloat keyboardHeight = keyboardFrame.size.height;
50
51 self.toolBar.transform = CGAffineTransformMakeTranslation(0, -1 * keyboardHeight);
52 }];
53 }
54
55 /** 键盘将缩回 */
56 - (void) keyboardWillHide:(NSNotification *) note {
57 // 键盘缩回需要时间
58 CGFloat duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
59
60 // 移动工具条
61 [UIView animateWithDuration:duration animations:^{
62 self.toolBar.transform = CGAffineTransformIdentity;
63 }];
64 }
D.相机 & 相册 选择图片功能
1.需求
点击“相机”/“相册”进入相应界面，完成后把选择的图片显示在输入框
2.思路
使用UIImagePickerController打开相机/相册
使用picker的代理方法，在完成选择后获取图片
创建一个UIView用来装载图片，然后放在输入框内
3.实现
1 // 2 // HVWComposeImageDisplayView.h 3 // HVWWeibo 4 // 5 // Created by hellovoidworld on 15/2/7. 6 // Copyright (c) 2015年 hellovoidworld. All rights reserved. 7 // 8 9 #import <UIKit/UIKit.h> 10 11 @interface HVWComposeImageDisplayView : UIView 12 13 - (void) addImage:(UIImage *) image; 14 15 @end
1 //
2 // HVWComposeImageDisplayView.m
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/7.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import "HVWComposeImageDisplayView.h"
10
11 #define MaxColumn 4
12
13 @implementation HVWComposeImageDisplayView
14
15 /** 添加图片 */
16 - (void) addImage:(UIImage *) image {
17 HVWLog(@"addImage");
18 UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
19 imageView.contentMode = UIViewContentModeScaleAspectFit;
20
21 [self addSubview:imageView];
22
23 [self setNeedsDisplay];
24 }
25
26 /** 设置frame */
27 - (void)layoutSubviews {
28 [super layoutSubviews];
29
30 UIImageView *imageView = [self.subviews lastObject];
31 int index = self.subviews.count - 1;
32 // 所在列
33 int column = index % MaxColumn;
34 // 所在行
35 int row = index / MaxColumn;
36
37 CGFloat margin = 10;
38 CGFloat imageWidth = (self.width - (MaxColumn + 1) * margin) / MaxColumn;
39 CGFloat imageHeight = imageWidth;
40 CGFloat imageX = column * (imageWidth + margin) + margin;
41 CGFloat imageY = row * (imageHeight + margin);
42
43 imageView.frame = CGRectMake(imageX, imageY, imageWidth, imageHeight);
44 }
45
46 @end
1 //
2 // HVWComposeViewController.m
3 // HVWWeibo
4 //
5 // Created by hellovoidworld on 15/2/3.
6 // Copyright (c) 2015年 hellovoidworld. All rights reserved.
7 //
8
9 #import "HVWComposeViewController.h"
10 #import "HVWComposeTextView.h"
11 #import "HVWComposeToolBar.h"
12 #import "HVWComposeImageDisplayView.h"
13
14 @interface HVWComposeViewController () <UITextViewDelegate, UIScrollViewDelegate, HVWComposeToolBarDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>
15
16 /** 输入框 */
17 @property(nonatomic, strong) HVWComposeTextView *composeView;
18
19 /** 工具条 */
20 @property(nonatomic, strong) HVWComposeToolBar *toolBar;
21
22 /** 图片显示区 */
23 @property(nonatomic, strong) HVWComposeImageDisplayView *imageDisplayView;
24
25 @end
26
27 @implementation HVWComposeViewController
28
29 - (void)viewDidLoad {
30 [super viewDidLoad];
31 // Do any additional setup after loading the view.
32
33
34 // 设置导航栏
35 [self setupNavigationBar];
36
37 // 添加自定义UITextView
38 [self setupTextView];
39
40 // 添加工具栏
41 [self setupToolBar];
42 }
43
44 /** 设置工具栏 */
45 - (void) setupToolBar {
46 HVWComposeToolBar *toolBar = [[HVWComposeToolBar alloc] init];
47 self.toolBar = toolBar;
48 toolBar.width = self.view.width;
49 toolBar.height = 44;
50 toolBar.delegate = self;
51
52 toolBar.x = 0;
53 // 在底部显示
54 toolBar.y = self.view.height - toolBar.height;
55
56 [self.view addSubview:toolBar];
57 }
58
59 /** 设置输入控件 */
60 - (void) setupTextView {
61 HVWComposeTextView *composeView = [[HVWComposeTextView alloc] init];
62 self.composeView = composeView;
63 composeView.frame = self.view.bounds;
64 composeView.delegate = self;
65
66 composeView.placeHolder = @"分享点滴精彩...";
67
68 [self.view addSubview:composeView];
69
70 // 监听键盘通知
71 // 键盘将弹出
72 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
73
74 // 键盘将缩回
75 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
76
77 // 添加图片显示区
78 [self setupImageDisplayView];
79 }
80
81 /** 设置导航栏 */
82 - (void) setupNavigationBar {
83 // 标题
84 self.title = @"发微博";
85
86 // 导航栏左方按钮
87 self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"退出" style:UIBarButtonItemStylePlain target:self action:@selector(dismiss)];
88 }
89
90 /** 添加图片显示区 */
91 - (void) setupImageDisplayView {
92 HVWComposeImageDisplayView *imageDisplayView = [[HVWComposeImageDisplayView alloc] init];
93 imageDisplayView.size = self.composeView.size;
94 imageDisplayView.x = 0;
95 imageDisplayView.y = 100;
96
97 self.imageDisplayView = imageDisplayView;
98
99 [self.composeView addSubview:imageDisplayView];
100 }
101
102 - (void)viewDidAppear:(BOOL)animated {
103 // 自动弹出键盘
104 [self.composeView becomeFirstResponder];
105 }
106
107 - (void) dismiss {
108 [self.composeView resignFirstResponder];
109 [self dismissViewControllerAnimated:YES completion:nil];
110
111 }
112
113
114 #pragma mark - UIScrollViewDelegate
115 /** 开始拖曳 */
116 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
117 // 缩回键盘
118 [self.composeView resignFirstResponder];
119 }
120
121 #pragma mark - HVWComposeToolBarDelegate
122 /** 工具栏的按钮被点击了 */
123 - (void)composeToolBar:(HVWComposeToolBar *)composeToolBar didButtonClicked:(HVWComposeToolBarButtonTag)tag {
124 // 判断哪个按钮被点击
125 switch (tag) {
126 case HVWComposeToolBarButtonTagCamera: // 相机
127 [self openCamera];
128 break;
129 case HVWComposeToolBarButtonTagPhotoLib: // 相册
130 [self openAlbum];
131 break;
132 case HVWComposeToolBarButtonTagMention: // 提到@
133
134 break;
135 case HVWComposeToolBarButtonTagTrend: // 话题
136
137 break;
138 case HVWComposeToolBarButtonTagEmotion: // 表情
139
140 break;
141 default:
142 break;
143 }
144 }
145
146 /** 打开相机 */
147 - (void) openCamera {
148 UIImagePickerController *picker = [[UIImagePickerController alloc] init];
149 picker.sourceType = UIImagePickerControllerSourceTypeCamera;
150 picker.delegate = self;
151
152 [self presentViewController:picker animated:YES completion:nil];
153 }
154
155 /** 打开相册 */
156 - (void) openAlbum {
157 UIImagePickerController *picker = [[UIImagePickerController alloc] init];
158 picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
159 picker.delegate = self;
160
161 [self presentViewController:picker animated:YES completion:nil];
162 }
163
164 #pragma mark - UIImagePickerControllerDelegate
165 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
166 // 取得原图
167 UIImage *image = info[UIImagePickerControllerOriginalImage];
168 [self.imageDisplayView addImage:image];
169
170 [picker dismissViewControllerAnimated:YES completion:nil];
171 }
172
173 #pragma mark - 键盘通知处理
174 /** 键盘将弹出 */
175 - (void) keyboardWillShow:(NSNotification *) note {
176 // 键盘弹出需要时间
177 CGFloat duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
178
179 // 移动工具条
180 [UIView animateWithDuration:duration animations:^{
181 // 获取键盘高度
182 CGRect keyboardFrame = [note.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];
183 CGFloat keyboardHeight = keyboardFrame.size.height;
184
185 self.toolBar.transform = CGAffineTransformMakeTranslation(0, -1 * keyboardHeight);
186 }];
187 }
188
189 /** 键盘将缩回 */
190 - (void) keyboardWillHide:(NSNotification *) note {
191 // 键盘缩回需要时间
192 CGFloat duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
193
194 // 移动工具条
195 [UIView animateWithDuration:duration animations:^{
196 self.toolBar.transform = CGAffineTransformIdentity;
197 }];
198 }
199
200 @end
时间： 2024-08-02 16:48:47