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UIView 等会效果简单实现,哪一个登录页面的demo来举例子吧.
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations;
UIView的一个类方法,可以看出这个方法里面只有两个参数:
duration: 动画持续时间;
animations:动画闭包,在这个闭包中你可以改变UIView的各种动画属性(这个方法中可以同时改变多个属性);
// 闭包里面是textField最终出现的位置,前提是你已经设置好了textField的位置.
[UIView animateWithDuration:0.5 animations:^{ self.emailTextField.frame = CGRectMake(30, self.userImg.frame.origin.y + self.userImg.bounds.size.height + 30, screen_width - 60, 40); self.pwdTextField.frame = CGRectMake(30, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); } completion:nil];
这个就是上面的代码动画出现的过程截图,emailText 和 pwdTextField 分别重两次移动到中间位置;
+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion;
这个方法多了几个参数:
delay:延时时间;
options:动画效果,比如重复动画、前后运动等;
[UIView animateWithDuration:0.5 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{ self.emailTextField.frame = CGRectMake(30, self.userImg.frame.origin.y + self.userImg.bounds.size.height + 30, screen_width - 60, 40); } completion:nil]; CGAffineTransform rotation = CGAffineTransformMakeRotation(M_PI);
[UIView animateWithDuration:0.5 delay:0.3 options:UIViewAnimationOptionCurveLinear animations:^{ self.pwdTextField.frame = CGRectMake(30, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); self.userImg.transform = rotation; } completion:nil];
这个过程里有头像的转动,emailText 和 pwdTextField 分别重两次移动到中间位置;
这两个添加动画效果的方法的代码附在下面:
// // ViewController.m // loginDemo20160330 // // Created by miaoguodong on 16/3/30. // Copyright © 2016年 miaoguodong. All rights reserved. // #import "ViewController.h" #define screen_width ([UIScreen mainScreen].bounds.size.width) #define screen_height ([UIScreen mainScreen].bounds.size.height) @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *loginBgImg; @property (weak, nonatomic) IBOutlet UIImageView *userImg; @property (weak, nonatomic) IBOutlet UITextField *emailTextField; @property (weak, nonatomic) IBOutlet UITextField *pwdTextField; @end @implementation ViewController - (void)dealloc { self.loginBgImg = nil; self.userImg = nil; self.emailTextField = nil; self.pwdTextField = nil; } - (void)viewDidLoad { [super viewDidLoad]; self.loginBgImg.frame = CGRectMake(0, 0, screen_width, screen_height); self.loginBgImg.image = [UIImage imageNamed:@"BgImage"]; self.userImg.frame = CGRectMake((self.loginBgImg.bounds.size.width - 100)/2, 80, 100, 100); self.userImg.image = [UIImage imageNamed:@"usrIcon"]; self.emailTextField.frame = CGRectMake(screen_width, self.userImg.frame.origin.y + self.userImg.bounds.size.height + 30, screen_width - 60, 40); self.pwdTextField.frame = CGRectMake(-screen_width, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); // self.emailTextField.frame = CGRectMake(30, self.userImg.frame.origin.y + self.userImg.bounds.size.height, screen_width - 60, 40); // self.pwdTextField.frame = CGRectMake(30, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); UIView *emailLeftView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.emailTextField.bounds.size.height, self.emailTextField.bounds.size.height)]; UIImageView *eleftImg = [[UIImageView alloc]initWithFrame:CGRectMake(4, 4, 32, 32)]; eleftImg.image = [UIImage imageNamed:@"user"]; [emailLeftView addSubview:eleftImg]; self.emailTextField.leftView = emailLeftView; self.emailTextField.leftViewMode = UITextFieldViewModeAlways; UIView *pwdLeftView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.pwdTextField.bounds.size.height, self.pwdTextField.bounds.size.height)]; UIImageView *pleftImg = [[UIImageView alloc]initWithFrame:CGRectMake(4, 4, 32, 32)]; pleftImg.image = [UIImage imageNamed:@"pwd"]; [pwdLeftView addSubview:pleftImg]; self.pwdTextField.leftView = pwdLeftView; self.pwdTextField.leftViewMode = UITextFieldViewModeAlways; // 简单设置 text输入框出现 // [UIView animateWithDuration:0.5 animations:^{ // self.emailTextField.frame = CGRectMake(30, self.userImg.frame.origin.y + self.userImg.bounds.size.height + 30, screen_width - 60, 40); // self.pwdTextField.frame = CGRectMake(30, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); // // } completion:nil]; // 设置 text输入框有动画效果的飞入 [UIView animateWithDuration:0.5 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{ self.emailTextField.frame = CGRectMake(30, self.userImg.frame.origin.y + self.userImg.bounds.size.height + 30, screen_width - 60, 40); } completion:nil]; CGAffineTransform rotation = CGAffineTransformMakeRotation(M_PI); [UIView animateWithDuration:0.5 delay:0.3 options:UIViewAnimationOptionCurveLinear animations:^{ self.pwdTextField.frame = CGRectMake(30, self.emailTextField.frame.origin.y + self.emailTextField.bounds.size.height, screen_width - 60, 40); self.userImg.transform = rotation; } completion:nil]; // Do any additional setup after loading the view, typically from a nib. } - (void)viewWillAppear:(BOOL)animated { } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
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原文地址：http://www.cnblogs.com/ting-miao/p/5338230.html
