IOS开发（15）之UITextView控件

来源：互联网发布：淘宝申请售后淘宝介入编辑：程序博客网时间：2024/05/23 18:55

1 前言

UITextView可以在一个滑动视图里面显示多行文本。

2 代码实例

ZYViewController.h：

#import <UIKit/UIKit.h>@interface ZYViewController : UIViewController@property(nonatomic,strong) UITextView *myTextView;@end

ZYViewController.m：

@synthesize myTextView;- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.    self.view.backgroundColor = [UIColor whiteColor];    myTextView = [[UITextView alloc] initWithFrame:self.view.bounds];//设置该文行文本框边框与整个手机视图相匹配    myTextView.text = @"Some text here...";//内容    myTextView.font = [UIFont systemFontOfSize:16.0f];//字体样式    [self.view addSubview:myTextView];//添加视图}

ZYUITextViewViewController.h:

#import <UIKit/UIKit.h>@interface ZYUITextViewViewController : UIViewController@property(nonatomic,strong) UITextView *myTextView;@end

ZYUITextViewViewController.m:

-(void)viewWillAppear:(BOOL)animated{    [super viewWillAppear:animated];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];//通知中心键盘即将显示时候触发事件    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];//通知中心键盘即将消失时刻触发事件    self.view.backgroundColor = [UIColor whiteColor];    myTextView = [[UITextView alloc] initWithFrame:self.view.bounds];//设置该文行文本框边框与整个手机视图相匹配    myTextView.text = @"handleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHide";//内容    myTextView.font = [UIFont systemFontOfSize:16.0f];//字体样式    [self.view addSubview:myTextView];//添加视图}-(void)handleKeyboardDidShow:(NSNotification *)paramNotifation{    //paramNotifation userInfo 返回接受的用户信息字典。UIKeyboardFrameEndUserInfoKey 获得键盘结束时候的位置    NSValue *keyboardRectAsObject = [[paramNotifation userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey];    CGRect keyboardRect;    [keyboardRectAsObject getValue:&keyboardRect];//获取键盘控件大小    myTextView.contentInset = UIEdgeInsetsMake(0.0f, 0.0f, keyboardRect.size.height, 0.0f);}-(void)handleKeyboardWillHide:(NSNotification *)paramNotification{    self.myTextView.contentInset = UIEdgeInsetsZero;}- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view.}-(void)viewWillDisappear:(BOOL)animated{    [super viewWillDisappear:animated];    [[NSNotificationCenter defaultCenter] removeObserver:self];//删除通知中心所有的信息}

运行结果：

3 结语

以上就是有关UITextView视图的简单介绍，希望对大家有所帮助。

Demo实例下载：http://download.csdn.net/detail/u010013695/5297455