1 前言
UITextView可以在一個滑動視圖裡面顯示多行文本。

2 代碼實例
ZYViewController.h：

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

#import <UIKit/UIKit.h>

@interface ZYViewController : UIViewController

@property(nonatomic,strong) UITextView *myTextView;

@end
ZYViewController.m：

[plain]  @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];//設置該文行文本框邊框與整個手機視圖相匹配 
    myTextView.text = @"Some text here...";//內容 
    myTextView.font = [UIFont systemFontOfSize:16.0f];//字體樣式 
    [self.view addSubview:myTextView];//添加視圖 
} 

@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];//設置該文行文本框邊框與整個手機視圖相匹配
    myTextView.text = @"Some text here...";//內容
    myTextView.font = [UIFont systemFontOfSize:16.0f];//字體樣式
    [self.view addSubview:myTextView];//添加視圖
}
ZYUITextViewViewController.h:

 

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

#import <UIKit/UIKit.h>

@interface ZYUITextViewViewController : UIViewController

@property(nonatomic,strong) UITextView *myTextView;

@end
ZYUITextViewViewController.m:

[plain]  (void)viewWillAppear:(BOOL)animated{ 
    [super viewWillAppear:animated]; 
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];//通知中心鍵盤即將顯示時候觸發事件 
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];//通知中心鍵盤即將消失時刻觸發事件 
    self.view.backgroundColor = [UIColor whiteColor]; 
    myTextView = [[UITextView alloc] initWithFrame:self.view.bounds];//設置該文行文本框邊框與整個手機視圖相匹配 
    myTextView.text = @"handleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHide";//內容 
    myTextView.font = [UIFont systemFontOfSize:16.0f];//字體樣式 
    [self.view addSubview:myTextView];//添加視圖 
} 
 
-(void)handleKeyboardDidShow:(NSNotification *)paramNotifation{ 
    //paramNotifation userInfo 返回接受的用戶信息字典。UIKeyboardFrameEndUserInfoKey 獲得鍵盤結束時候的位置 
    NSValue *keyboardRectAsObject = [[paramNotifation userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey]; 
    CGRect keyboardRect; 
    [keyboardRectAsObject getValue:&keyboardRect];//獲取鍵盤控件大小 
    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];//刪除通知中心所有的信息 
} 

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];//通知中心鍵盤即將顯示時候觸發事件
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];//通知中心鍵盤即將消失時刻觸發事件
    self.view.backgroundColor = [UIColor whiteColor];
    myTextView = [[UITextView alloc] initWithFrame:self.view.bounds];//設置該文行文本框邊框與整個手機視圖相匹配
    myTextView.text = @"handleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHidehandleKeyboardWillHide";//內容
    myTextView.font = [UIFont systemFontOfSize:16.0f];//字體樣式
    [self.view addSubview:myTextView];//添加視圖
}

-(void)handleKeyboardDidShow:(NSNotification *)paramNotifation{
    //paramNotifation userInfo 返回接受的用戶信息字典。UIKeyboardFrameEndUserInfoKey 獲得鍵盤結束時候的位置
    NSValue *keyboardRectAsObject = [[paramNotifation userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey];
    CGRect keyboardRect;
    [keyboardRectAsObject getValue:&keyboardRect];//獲取鍵盤控件大小
    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];//刪除通知中心所有的信息
}
運行結果：