这篇文章主要介绍了iOS如何实现键盘自适应弹出效果，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
创新互联是专业的贵港网站建设公司，贵港接单;提供成都网站制作、成都网站建设、外贸营销网站建设,网页设计,网站设计,建网站,PHP网站建设等专业做网站服务;采用PHP框架,可快速的进行贵港网站开发网页制作和功能扩展;专业做搜索引擎喜爱的网站,专业的做网站团队,希望更多企业前来合作!一、iOS键盘自适应弹出效果图
二、工程图
三、代码
ViewController.h
#import@interface ViewController : UIViewController @end
ViewController.m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UITextField *field=[[UITextField alloc]initWithFrame:CGRectMake(100, 300, 50, 50)];
field.backgroundColor=[UIColor redColor];
field.delegate=self;
[self.view addSubview:field];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}
#pragma -mark -keyboard notificatin
- (void)keyboardWillShow:(NSNotification *)notification {
NSDictionary *info = [notification userInfo];
// keyboardHeight 为键盘高度
CGSize keyboardSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
[self animateViewWithKeyboardHeight:keyboardSize.height];
}
- (void)keyboardWillHide:(NSNotification *)notification {
[self animateViewWithKeyboardHeight:0.0];
}
- (void)animateViewWithKeyboardHeight:(CGFloat)keyboardHeight {
NSTimeInterval animationDuration = 0.3f;
CGFloat height = self.view.bounds.size.height;
CGFloat width = self.view.bounds.size.width;
CGFloat topSize = 0.0;
CGFloat viewH = self.view.frame.size.height-64;
CGFloat deviceHeight = [UIScreen mainScreen].bounds.size.height;
CGFloat animateH = deviceHeight - viewH - keyboardHeight;
if (animateH >= 0) {
topSize = 0;
CGRect toRect = CGRectMake(0, topSize, width, height);
self.view.frame = toRect;
} else {
topSize = animateH;
CGRect toRect = CGRectMake(0, topSize, width, height);
[UIView animateWithDuration:animationDuration animations:^{
self.view.frame = toRect;
}];
}
}
#pragma -mark -UITextFieldDelegate
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end感谢你能够认真阅读完这篇文章，希望小编分享的“iOS如何实现键盘自适应弹出效果”这篇文章对大家有帮助，同时也希望大家多多支持创新互联建站，关注创新互联网站建设公司行业资讯频道，更多相关知识等着你来学习!
另外有需要云服务器可以了解下创新互联建站www.cdcxhl.com，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。
