iOS UI-文本视图（UITextView）

最新推荐文章于 2025-09-05 18:39:19 发布

转载最新推荐文章于 2025-09-05 18:39:19 发布 · 109 阅读

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原文链接：http://www.cnblogs.com/oc-bowen/p/5091959.html

文章标签：

#ui

本文介绍如何在 iOS 应用中使用 UITextView 控件实现文本输入功能，并通过手势识别关闭键盘，调整键盘类型及文本视图的高度。

 1 #import "ViewController.h"
 2 
 3 @interface ViewController ()<UITextViewDelegate>
 4 
 5 @property (strong, nonatomic) UITextView *textView;
 6 
 7 @end
 8 
 9 @implementation ViewController
10 
11 @synthesize textView;
12 
13 - (void)viewDidLoad {
14     [super viewDidLoad];
15     //创建视图
16     UIView *bgView = [[UIView alloc] initWithFrame:self.view.frame];
17     bgView.backgroundColor = [UIColor lightGrayColor];
18     [self.view addSubview:bgView];
19     //创建点击手势
20     UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(closeKeyBoard)];
21     [bgView addGestureRecognizer:tap];
22     
23     //初始化大小
24     self.textView = [[UITextView alloc] initWithFrame:CGRectMake(50, 150, self.view.frame.size.width-100, 300)];
25     //字体颜色
26     self.textView.textColor = [UIColor blackColor];
27     //字体名称和大小
28     self.textView.font = [UIFont fontWithName:@"Arial" size:18.0];
29     //设置委托方法
30     self.textView.delegate = self;
31     //背景颜色
32     self.textView.backgroundColor = [UIColor whiteColor];
33     //内容
34     //self.textView.text = @"qwertyuyiopasdfghjklzxcvbnm";
35     //返回键类型
36     self.textView.returnKeyType = UIReturnKeyDefault;
37     //键盘类型
38     self.textView.keyboardType = UIKeyboardTypeNamePhonePad;
39     //是否可以拖动
40     self.textView.scrollEnabled = YES;
41     //禁止编辑
42     self.textView.editable = YES;
43     //自适应高度
44     self.textView.autoresizingMask = UIViewAutoresizingFlexibleHeight;
45     //加到整个页面中
46     [self.view addSubview:self.textView];
47 }
48 
49 - (void)closeKeyBoard
50 {
51     [self.textView resignFirstResponder];
52 }
53 - (void)textViewDidBeginEditing:(UITextView *)textView
54 {
55     [UIView beginAnimations:@"test" context:nil];
56     [UIView setAnimationDuration:0.3];
57     
58     CGRect rect = self.textView.frame;
59     rect.origin.y = rect.origin.y - 80;
60     self.textView.frame = rect;
61     [UIView commitAnimations];
62 }
63 
64 - (void)textViewDidEndEditing:(UITextView *)textView
65 {
66     [UIView beginAnimations:@"test" context:nil];
67     [UIView setAnimationDuration:0.3];
68     
69     CGRect rect = self.textView.frame;
70     rect.origin.y = rect.origin.y + 80;
71     self.textView.frame = rect;
72     [UIView commitAnimations];
73 }
74 
75 - (void)didReceiveMemoryWarning {
76     [super didReceiveMemoryWarning];
77     // Dispose of any resources that can be recreated.
78 }
79 
80 @end