很多時候我們都在為鍵盤遮擋了原本就不大的屏幕時而煩惱，特別是當用戶處於編輯狀態時，鍵盤下面的內容就看不見了，用戶只能處於盲打狀態了。現在有一種簡單的解決辦法，基本思路就是，添加通知。一直監聽鍵盤事件，在鍵盤遮擋時，將編輯器上移鍵盤的高度，鍵盤消失時，編輯區回復原來位置，ok，來兩段代碼吧
[cpp] 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    self.textView=[[UITextView alloc]initWithFrame:self.view.frame]; 
    self.textView.text=@"請輸入文字"; 
    [self.view addSubview:self.textView]; 
} 
 
- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 
 
- (void)viewWillAppear:(BOOL)animated 
{ 
    //注冊通知,監聽鍵盤出現 
    [[NSNotificationCenter defaultCenter]addObserver:self 
                                            selector:@selector(handleKeyboardDidShow:) 
                                                name:UIKeyboardDidShowNotification 
                                              object:nil]; 
    //注冊通知，監聽鍵盤消失事件 
    [[NSNotificationCenter defaultCenter]addObserver:self 
                                            selector:@selector(handleKeyboardDidHidden) 
                                                name:UIKeyboardDidHideNotification 
                                              object:nil]; 
    [super viewWillAppear:YES]; 
} 
 
//監聽事件 
- (void)handleKeyboardDidShow:(NSNotification*)paramNotification 
{ 
    //獲取鍵盤高度 
    NSValue *keyboardRectAsObject=[[paramNotification userInfo]objectForKey:UIKeyboardFrameEndUserInfoKey]; 
     
    CGRect keyboardRect; 
    [keyboardRectAsObject getValue:&keyboardRect]; 
     
    self.textView.contentInset=UIEdgeInsetsMake(0, 0,keyboardRect.size.height, 0); 
} 
 
- (void)handleKeyboardDidHidden 
{ 
    self.textView.contentInset=UIEdgeInsetsZero; 
} 
 
- (void)viewDidDisappear:(BOOL)animated 
{ 
    [[NSNotificationCenter defaultCenter] removeObserver:self]; 
}