同時關閉鍵盤與視圖

Question

我正在構建的應用程序有一個消息/聊天視圖控制器，該視圖帶有一個textView和一個位於視圖底部的按鈕（標籤欄設置爲隱藏）。當視圖加載時，包含這些對象（textView和按鈕）的視圖位於屏幕的底部（例如，當您進入對話時它在iMessage應用程序中的外觀）

現在當textview很明顯，鍵盤向上移動，隨着我設法讓視圖向上移動並坐在鍵盤的頂部（例如，當你要輸入新的文本信息時）。

現在我想要做的是讓視圖與鍵盤上下移動。截至目前它始於底部。當鍵盤上升時，該視圖會停留在底部一兩秒鐘，然後出現在鍵盤上方。當鍵盤被解僱時也是如此。

我希望我能提供的圖片，但我想我的名聲不太削減IT

有沒有一種方法，我可以匹配兩個讓他們一起移動的過渡或動畫，就好像它們連接？

視圖被初始化

//Create the keyboard UIView 
    self.keyboardView = [[UIView alloc] initWithFrame:CGRectMake(0, self.view.frame.origin.y + self.view.frame.size.height - (self.navigationController.tabBarController.tabBar.frame.size.height), self.view.frame.size.width, 50)]; 

選擇器用於移動

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardFrameDidChange:) name:UIKeyboardDidChangeFrameNotification object:nil]; 

選擇器實現的視圖

- (void)keyboardFrameDidChange:(NSNotification*)notification{ 
    NSDictionary* info = [notification userInfo]; 

    CGRect kKeyBoardFrame = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]; 
     [self.keyboardView setFrame:CGRectMake(0, kKeyBoardFrame.origin.y - self.keyboardView.frame.size.height, 320, self.keyboardView.frame.size.height)]; 
     self.myScrollView.contentSize = CGSizeMake(self.view.frame.size.width, self.myTableView.frame.size.height); 


} 

Answer 1

只需在動畫塊中包裝您的[keyboardView setFrame：...]即可。您可以從通知對象獲得鍵盤的動畫持續時間和曲線：

NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; 
UIViewAnimationCurve curve = [notification.userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]; 
[UIView animateWithDuration:duration delay:0 options:curve animations:^{ 
    self.keyboardView.frame = ...; 
} completion:nil]; 

Answer 2

使用UITextFieldDelegate

這將是你的標誌，鍵盤會顯示出來

-(void)textFieldDidBeginEditing:(UITextField *)textField{ 
//Animate like slide up. 
     [UIView animateWithDuration:0.3 
         animations:^{ 
          //Use offset rather than contentSize 
          scrollView.contentOffset = CGPointMake(x,y); 
         }]; 
} 

當你的鍵盤解僱（resignFirstResponder）

-(void)dismissKeyboard{ 
    [self.view endEditing:YES]; 
    [UIView animateWithDuration:0.3 
        animations:^{ 
         scrollView.contentOffset = CGPointMake(0,0); 

        }]; 
} 

Answer 3

你可以這樣做這裏是鍵盤通知

[[NSNotificationCenter defaultCenter] addObserver:self 

             selector:@selector(keyboardWasShown:) 

              name:UIKeyboardWillShowNotification object:nil]; 

[[NSNotificationCenter defaultCenter] addObserver:self 

             selector:@selector(keyboardWillBeHidden:) 

              name:UIKeyboardWillHideNotification object:nil]; 

keyboardWasShown

- (void)keyboardWasShown:(NSNotification*)aNotification 

{ 
NSDictionary* info = [aNotification userInfo]; 
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size; 
double duration = [[[aNotification userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]; 
int curve = [[[aNotification userInfo] objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]; 
[UIView beginAnimations:@"foo" context:nil]; 
[UIView setAnimationDuration:duration]; 
[UIView setAnimationCurve:curve]; 
CGRect rect=self.viewChatWindow.frame; 
rect.size.height=self.viewChatWindow.frame.size.height-kbSize.height; 
self.viewChatWindow.frame=rect; 

[UIView setAnimationDelegate:self]; 
[UIView setAnimationDidStopSelector:@selector(scrollToLast)]; 
[UIView commitAnimations]; 

} 

keyboardWillBeHidden

- (void)keyboardWillBeHidden:(NSNotification*)aNotification 

{ 
double duration = [[[aNotification userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]; 
int curve = [[[aNotification userInfo] objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]; 
[UIView beginAnimations:@"foo" context:nil]; 
[UIView setAnimationDuration:duration]; 
[UIView setAnimationCurve:curve]; 
CGRect rect=self.viewChatWindow.frame; 
rect.size.height=self.view.frame.size.height-rect.origin.y; 
self.viewChatWindow.frame=rect; 
[UIView setAnimationDelegate:self]; 
[UIView setAnimationDidStopSelector:@selector(scrollToLast)]; 
[UIView commitAnimations]; 
}