键盘弹出和消失View的上下移动效果
键盘弹出和消失View的上下移动效果
YunHe_Lee 发表于3年前
键盘弹出和消失View的上下移动效果
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#pragma mark 设置textView并在设置view随键盘的移动而移动

-(void)setTextView

{

    [self.myTextView.layer setCornerRadius:5.0];

    //监听键盘弹出

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];

    //监听键盘消失

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHidden:) name:UIKeyboardWillHideNotification object:nil];

    UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 45)];

    [topView setBarStyle:UIBarStyleBlackTranslucent];

    //定义两个flexibleSpacebutton,放在toolBar上,这样完成按钮就会在最右边

    UIBarButtonItem * button1 =[[UIBarButtonItem  alloc]initWithBarButtonSystemItem:                                        UIBarButtonSystemItemFlexibleSpace target:self action:nil];

    

    UIBarButtonItem * button2 = [[UIBarButtonItem  alloc]initWithBarButtonSystemItem:                                        UIBarButtonSystemItemFlexibleSpace target:self action:nil];

    //定义完成按钮

    UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStyleDone  target:self action:@selector(resignKeyboard)];

    //toolBar上加上这些按钮

    NSArray * buttonsArray = [NSArray arrayWithObjects:button1,button2,doneButton,nil];

    [topView setItems:buttonsArray];

    [self.myTextView setInputAccessoryView:topView];

}




#pragma mark 隐藏键盘

-(void)resignKeyboard

{   //取消键盘为第一相应者

    [self.myTextView resignFirstResponder];

}

#pragma mark 键盘弹出View向上移动

-(void)keyboardDidShow:(NSNotification *)notification

{

    

    NSDictionary *userInfo = [notification userInfo];

    NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

    CGRect keyboardRect = [aValue CGRectValue];

    int height = keyboardRect.size.height; //获取键盘高度

    

    CGContextRef context = UIGraphicsGetCurrentContext();

    //开始播放动画

    [UIView beginAnimations:nil context:context];

    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

    [UIView setAnimationDuration:0.3];

    [self.myView setFrame:CGRectMake(0,-height, 320, 480)];

    

    [UIView commitAnimations];

    

}



#pragma mark 键盘消失View向下移动

-(void)keyboardDidHidden:(NSNotification *)notification

{

    

    CGContextRef context = UIGraphicsGetCurrentContext();

    //开始播放动画

    [UIView beginAnimations:nil context:context];

    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

    [UIView setAnimationDuration:0.3];

    [self.myView setFrame:CGRectMake(0,0, 320, 480)];

    

    [UIView commitAnimations];

    

    

}

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