之前在 在iOS虛擬鍵盤上添加動態(tài)隱藏按鈕一文中描敘了關(guān)于鍵盤上添加動態(tài)按鈕的操作，發(fā)現(xiàn)鍵盤上的按鈕顯示出來的時候很僵硬，此處做了改進(jìn)，添加了動畫過渡，更換了圖片，能夠讓人感覺按鈕是隨著鍵盤的動畫顯示而顯示，隨著鍵盤的動畫退出而退出，看上去更加流暢些；

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效果圖:

  

  

- (void)viewDidLoad
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    [super viewDidLoad];
	exitButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [exitButton setImage:[UIImage p_w_picpathNamed:@"down.png"] forState:UIControlStateNormal];
    CGRect exitBtFrame = CGRectMake(self.view.frame.size.width-48, self.view.frame.size.height , 48.0f, 30.0f);
    
    [exitButton setFrame:exitBtFrame];
      
   
    [self.view addSubview:exitButton];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];  
    
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)handleKeyboardDidShow:(NSNotification *)notification 
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    NSDictionary *info = [notification userInfo];
    NSLog(@"-->info:%@",info);
    CGRect keyboardFrame;
    [[info objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardFrame];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue].size;
    NSValue *animationDurValue = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
//    copy value
    [animationDurValue getValue:&animationDuration];
    
//    讓鍵盤彈起的時候添加一個動畫
    [UIView beginAnimations:@"animal" context:nil];
    [UIView setAnimationDuration:animationDuration];
    
    CGFloat distanceToMove = kbSize.height;
    NSLog(@"---->動態(tài)鍵盤高度:%f",distanceToMove);
    [self adjustPanelsWithKeyBordHeight:distanceToMove];
    [UIView commitAnimations];
    exitButton.hidden=NO;
    [exitButton addTarget:self action:@selector(CancelBackKeyboard:) forControlEvents:UIControlEventTouchDown];
    

}

- (void)handleKeyboardWillHide:(NSNotification *)notification 
{
    NSLog(@"%@",NSStringFromSelector(_cmd));

    NSDictionary *info = [notification userInfo];
    CGRect keyboardFrame;
    [[info objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardFrame];
    NSValue *animationDurValue = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
    //   把a(bǔ)nimationDurvalue 值拷貝到animationDuration中
    [animationDurValue getValue:&animationDuration];
    
    [UIView beginAnimations:@"animal" context:nil];
    [UIView setAnimationDuration:animationDuration];

    if (exitButton) {

        CGRect exitBtFrame = CGRectMake(self.view.frame.size.width - 48, self.view.frame.size.height, 48.0f, 30.0f);
        exitButton.frame = exitBtFrame;
        [self.view addSubview:exitButton];

    }
    [UIView commitAnimations];
    
}

-(void)adjustPanelsWithKeyBordHeight:(float) height
{
   
    NSLog(@"%@",NSStringFromSelector(_cmd));
    if (exitButton) {

       CGRect exitBtFrame = CGRectMake(self.view.frame.size.width - 48, self.view.frame.size.height - height-30, 48.0f, 30.0f);
        exitButton.frame = exitBtFrame;

        [self.view addSubview:exitButton];


    }
    
    
}

-(void)CancelBackKeyboard:(id)sender
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    
    [textField resignFirstResponder];
    
}

- (void)viewDidUnload
{
    [self setTextField:nil];
    exitButton=nil;
    [super viewDidUnload];
    
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (void)dealloc {
    [textField release];
    [exitButton release];
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    [super dealloc];
}

源碼:http://download.csdn.net/detail/duxinfeng2010/4858444

 

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分享名稱：iOS虛擬鍵盤上添加動態(tài)按鈕-創(chuàng)新互聯(lián)
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