UI基础第二天（代码）

项目：汤姆猫动画

方法：

• 编写创建界面的方法（按钮和图片视图）
• 编写出初始化界面的方法
• 编写动画的播放动画的方法
• 编写按钮响应事件的方法

素材：

• 加载显示的图片放在Images.xcassets里
• 动画播放的图片放在根目录下

代码实现：

#import "ViewController.h"@interface ViewController ()//播放的视图@property (weak, nonatomic) UIImageView *imageView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    //创建界面并初始化界面    [self buildInterface];}//创建界面并初始化界面-(void)buildInterface{    //创建视图    self.imageView = [self buildImageView];    self.imageView.image = [UIImage imageNamed:@"cat"];    //创建按钮    UIButton* button0 = [self buildButtonWithFrame:(CGRect){16,587,60,60} andTag:0];    UIButton* button1 = [self buildButtonWithFrame:(CGRect){16,516,60,60} andTag:1];    UIButton* button2 = [self buildButtonWithFrame:(CGRect){16,443,60,60} andTag:2];    UIButton* button3 = [self buildButtonWithFrame:(CGRect){299,443,60,60} andTag:3];    UIButton* button4 = [self buildButtonWithFrame:(CGRect){299,516,60,60} andTag:4];    UIButton* button5 = [self buildButtonWithFrame:(CGRect){299,587,60,60} andTag:5];    [self buildButtonWithFrame:(CGRect){91,119,192,199} andTag:6];    [self buildButtonWithFrame:(CGRect){130,363,112,226} andTag:7];    [self buildButtonWithFrame:(CGRect){196,602,46,34} andTag:8];    [self buildButtonWithFrame:(CGRect){130,607,46,34} andTag:9];    //设置按钮背景图片    [button0 setBackgroundImage:[UIImage imageNamed:@"b0"]forState:UIControlStateNormal];    [button1 setBackgroundImage:[UIImage imageNamed:@"b1"]forState:UIControlStateNormal];    [button2 setBackgroundImage:[UIImage imageNamed:@"b2"]forState:UIControlStateNormal];    [button3 setBackgroundImage:[UIImage imageNamed:@"b3"]forState:UIControlStateNormal];    [button4 setBackgroundImage:[UIImage imageNamed:@"b4"]forState:UIControlStateNormal];    [button5 setBackgroundImage:[UIImage imageNamed:@"b5"]forState:UIControlStateNormal];}//创建视图-(UIImageView*) buildImageView{    UIImageView * imageView =[[UIImageView alloc]init];    //加入父视图    [self.view addSubview:imageView];    //设置尺寸    imageView.frame = (CGRect){0,0,375,667};    return imageView;}//创建按钮-(UIButton*) buildButtonWithFrame:(CGRect)frame andTag:(int)tag{    UIButton * button = [[UIButton alloc]init];    //加入父视图    [self.view addSubview:button];    //设置属性    button.frame = frame;    button.tag = tag;    //添加响应方法    [button addTarget:self action:@selector(start:) forControlEvents:UIControlEventTouchUpInside];    return button;}//执行动画-(void) start:(UIButton*)button{    switch (button.tag) {        case 0:            [self animationWithImageCount:81 andImageName:@"drink"];            break;        case 1:            [self animationWithImageCount:40 andImageName:@"eat"];            break;        case 2:            [self animationWithImageCount:24 andImageName:@"pie"];            break;        case 3:            [self animationWithImageCount:28 andImageName:@"fart"];            break;        case 4:            [self animationWithImageCount:13 andImageName:@"cymbal"];            break;        case 5:            [self animationWithImageCount:56 andImageName:@"scratch"];            break;        case 6:            [self animationWithImageCount:81 andImageName:@"knockout"];            break;        case 7:            [self animationWithImageCount:26 andImageName:@"angry"];            break;        case 8:            [self animationWithImageCount:30 andImageName:@"footLeft"];            break;        case 9:            [self animationWithImageCount:30 andImageName:@"footRight"];            break;    }}//加载并播放动画-(void) animationWithImageCount:(int)count andImageName:(NSString*)name{    //如果当前正在执行动画就直接退出    if (self.imageView.isAnimating) {        return;    }    //创建可变数组,用于存放动画的图片    NSMutableArray* imageArray = [NSMutableArray arrayWithCapacity:count];    //加载图片    for (int i=0; i<count; i++) {        //图片的名称        NSString* imageName = [NSString stringWithFormat:@"%@_%02d",name,i];                //根据图片名称创建图片,使用 imageNamed: 创建出来的图片默认会进行缓存        //UIImage* image = [UIImage imageNamed:imageName];                //NSBundle：应用所在文件夹，        NSBundle* bundele =[NSBundle mainBundle];        //获取图片全路径，在images.xcassets中图片会被压缩到一个包中，无法获取它的全路径        NSString* path = [bundele pathForResource:imageName ofType:@"jpg"];        //根据路径创建图片        UIImage* image = [UIImage imageWithContentsOfFile:path];                //把图片添加到数组中        [imageArray addObject:image];    }    //把图片传递给视图    self.imageView.animationImages = imageArray;    //播放的时间    self.imageView.animationDuration = count * 0.05;    //播放的次数    self.imageView.animationRepeatCount = 1;    //开始播放    [self.imageView startAnimating];    //延迟清空动画    [self.imageView performSelector:@selector(setAnimationImages:) withObject:nil afterDelay:self.imageView.animationDuration+0.05];    }@end