Snail—UI学习之动画Animations

来源：互联网发布：漓江学院知乎编辑：程序博客网时间：2024/05/22 06:18
直接上代码，看的不深，以后再做详细讲解
#import "WJJRootViewController.h"@interface WJJRootViewController (){    //把view设为全局变量    UIView * _view;}@end@implementation WJJRootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view.    self.view.backgroundColor = [UIColor grayColor];    _view = [[UIView alloc] initWithFrame:CGRectMake(300, 400, 20, 20)];    _view.tag = 250;    _view.backgroundColor = [UIColor purpleColor];    [self.view addSubview:_view];    //动画执行第一种方法    UIButton * button1 = [UIButton buttonWithType:UIButtonTypeSystem];    button1.tag = 1;    button1.frame = CGRectMake(0, 460, 50, 20);    button1.backgroundColor = [UIColor yellowColor];    [button1 setTitle:@"动画1" forState:UIControlStateNormal];    [button1 addTarget:self action:@selector(change:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button1];        //动画执行第一种方法    UIButton * button2 = [UIButton buttonWithType:UIButtonTypeSystem];    button2.tag = 2;    button2.frame = CGRectMake(60, 460, 50, 20);    button2.backgroundColor = [UIColor yellowColor];    [button2 setTitle:@"动画2" forState:UIControlStateNormal];    [button2 addTarget:self action:@selector(change:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button2];        //动画执行第一种方法    UIButton * button3 = [UIButton buttonWithType:UIButtonTypeSystem];    button3.tag = 3;    button3.frame = CGRectMake(120, 460, 50, 20);    button3.backgroundColor = [UIColor yellowColor];    [button3 setTitle:@"动画3" forState:UIControlStateNormal];    [button3 addTarget:self action:@selector(change:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button3];    }- (void)change:(UIButton *)button{        if (button.tag == 1) {        //动画执行前的准备        [UIView beginAnimations:nil context:nil];        //动画执行的时间        [UIView setAnimationDuration:10];        //动画执行的 也就是要看到的动画效果        _view.frame = CGRectMake(0, 20, 50, 50);        _view.backgroundColor = [UIColor blackColor];        //动画执行        [UIView commitAnimations];    }else if (button.tag == 2){        //动画持续10s,block中写的就是要实现的最终动画结果        [UIView animateWithDuration:10 animations:^{            _view.frame = CGRectMake(0, 20, 50, 50);            _view.backgroundColor = [UIColor blackColor];        }];            }else if (button.tag == 3){        //第一个block是第一次实现的动画效果 第二个block是第一个动画效果完成后执行的另一个动画        [UIView animateWithDuration:4 animations:^{            _view.frame = CGRectMake(0, 20, 50, 50);            _view.backgroundColor = [UIColor blackColor];        } completion:^(BOOL finshed){                        [UIView animateWithDuration:10 animations:^{                _view.frame = CGRectMake(300, 440, 20, 20);                _view.backgroundColor = [UIColor blackColor];            }];        }];    }    }- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end
0 0