iOS屏幕根据键盘自动变化高度
来源:爱站网时间:2021-03-09编辑:网友分享
在IOS开发中要变化键盘的高度通常都是通过控件进行实现的,而我们只要掌握了这2个控件,很多功能都能实现,下面请大家跟随爱站技术频道小编一起了解iOS屏幕根据键盘自动变化高度吧!
在IOS开发中要变化键盘的高度通常都是通过控件进行实现的,而我们只要掌握了这2个控件,很多功能都能实现,下面请大家跟随爱站技术频道小编一起了解iOS屏幕根据键盘自动变化高度吧!
一、效果图
二、代码
ViewController.h
#import@interface ViewController : UIViewController @end
ViewController.m
#import "ViewController.h" #define W [UIScreen mainScreen].bounds.size.width #define H [UIScreen mainScreen].bounds.size.height @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]; } #pragma -mark -UITextFieldDelegate -(BOOL)textFieldShouldReturn:(UITextField *)textField { [textField resignFirstResponder]; //self.view 恢复原位 NSTimeInterval animationDuration=0.10f; [UIView beginAnimations:@"ResizeForKeyboard" context:nil]; [UIView setAnimationDuration:animationDuration]; float width = W; float height = H; float Y = 0.0f; CGRect rect=CGRectMake(0.0f,Y,width,height); self.view.frame=rect; [UIView commitAnimations]; return YES; } -(BOOL)textFieldShouldBeginEditing:(UITextField *)textField { NSTimeInterval animationDuration=0.30f; [UIView beginAnimations:@"ResizeForKeyboard" context:nil]; [UIView setAnimationDuration:animationDuration]; float width = W; float height = H; //上移100个单位,按实际情况设置 CGRect rect=CGRectMake(0.0f,-100,width,height); self.view.frame=rect; [UIView commitAnimations]; return YES; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. }
以上就是爱站技术频道小编介绍的iOS屏幕根据键盘自动变化高度,相信人们已经都有了详细的了解,能够解决项目产生的问题,赢得更多的收益。