UIImageView的使用

1. 常见的属性

 // 1.创建UIImageView的对象
    UIImageView *imageView = [[UIImageView alloc] init];
    
    // 2.设置frame
    imageView.frame = CGRectMake(100, 100, 175, 175);
    
    // 3.设置背景颜色
    imageView.backgroundColor = [UIColor yellowColor];
    
    // 4.设置显示的图片
    imageView.image = [UIImage imageNamed:@"1"];
    
    // 5.设置内容模式
    /*
     UIViewContentModeRedraw, 重新绘制 drawRect
     
     // 带Scale比例--图片之后可能会被缩放
     UIViewContentModeScaleToFill, // 默认情况 : 压缩或者拉伸图片,让图片可以填充整个控件
     
     UIViewContentModeScaleAspectFit, // 宽度比例不变 : 图片可以被拉伸也可与被压缩,但是保持宽高比.Fit:适应,一部分填充
     UIViewContentModeScaleAspectFill,  // 宽度比例不变 : 图片可以被拉伸也可与被压缩,但是保持宽高比.Fill:填充
     
     // 图片不会被拉伸和压缩
     UIViewContentModeCenter,
     UIViewContentModeTop,
     UIViewContentModeBottom,
     UIViewContentModeLeft,
     UIViewContentModeRight,
     
     UIViewContentModeTopLeft,
     UIViewContentModeTopRight,
     UIViewContentModeBottomLeft,
     UIViewContentModeBottomRight,
     */
    imageView.contentMode = UIViewContentModeScaleAspectFill;
    
    // 将对象添加到控制器的View中
    [self.view addSubview:imageView];
    
    // 设置超出控件的部分剪切掉
    imageView.clipsToBounds = YES;

2.添加毛玻璃效果

 // 1.创建UIImageView作为背景
    UIImageView *bgImageView = [[UIImageView alloc] init];
    
    // 2.设置frame
    bgImageView.frame = self.view.bounds;
    // bgImageView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    
    // 3.设置背景颜色
    bgImageView.backgroundColor = [UIColor yellowColor];
    
    // 4.设置显示的背景图片
    bgImageView.image = [UIImage imageNamed:@"1"];
    
    // 5.设置内容模式
    bgImageView.contentMode = UIViewContentModeScaleAspectFill;
    
    // 6.添加毛玻璃效果
    // 6.1.创建UIToolbar对象
    UIToolbar *toolbar = [[UIToolbar alloc] init];
    
    // 6.2.设置toolbar的样式
    toolbar.barStyle = UIBarStyleBlack;
    
    // 6.2.设置frame
    toolbar.frame = bgImageView.bounds;
    
    // 6.3.将toolBar添加到bgImageView中
    [bgImageView addSubview:toolbar];
    
    // 添加到控制器的View
    [self.view addSubview:bgImageView];

3.UIImageView 的frame的设置的四种方式

// 1.最基本的设置frame的方式
    
    // 1.1.创建UIImageView对象
    UIImageView *imageView1 = [[UIImageView alloc] init];
    
    // 1.2.设置frame
    imageView1.frame = CGRectMake(50, 50, 267, 400);
    
    // 1.3.设置图片
    imageView1.image = [UIImage imageNamed:@"1"];
    
    
    // 2.根据图片的大小设置frame的方式(掌握)
    
    // 2.1.创建UIimageView对象
    UIImageView *imageView2 = [[UIImageView alloc] init];
    
    // 2.2.加载图片
    UIImage *image2 = [UIImage imageNamed:@"1"];
    
    // 2.3.设置frame
    imageView2.frame = CGRectMake(50, 50, image2.size.width, image2.size.height);
    
    // 2.4.设置图片
    imageView2.image = image2;
    
    
    // 3.创建UIImageView对象时,直接设置frame
    
    // 3.1.加载图片
    UIImage *image = [UIImage imageNamed:@"1"];
    
    // 3.2.创建UIImageView的对象,同时初始化frame
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(50, 50, image.size.width, image.size.height)];
    
    // 3.3.设置图片
    imageView.image = image;
    
    
    // 4.创建UIImageView对象时,直接设置图片(掌握)
    // 4.1.创建UIImageView对象,并且设置要显示的图片
    // 注意:如果初始化时设置图片,那么图片的尺寸就是imageView的尺寸
    UIImageView *imageView4 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];
    
    // 4.2.改变imageView的位置
    imageView4.center = CGPointMake(self.view.frame.size.width * 0.5, self.view.frame.size.height * 0.5);
    
    // 超出imageView的部分剪切
    imageView4.clipsToBounds = YES;
    
    // 添加到控制器的View中
    [self.view addSubview:imageView];

4.UIImageView的帧动画

1.将所有的要播放的图片添加进一个数组保存,然后复制给ImageView的animationImages属性

 // 1.加载所以的图片
    NSMutableArray *images = [NSMutableArray array];
    for (int i = 0; i < 20; i++) {
        // 1.1.获取图片的名称
        NSString *imageName = [NSString stringWithFormat:@"%d", i + 1];
        
        // 1.2.加载图片
        UIImage *image = [UIImage imageNamed:imageName];
        
        // 1.3.将image对象放入数组中
        [images addObject:image];
    }
    
    // 2.设置动画播放的图片
    self.imageView.animationImages = images;

5.通过ImageView的属性设置开启动画播放

// 3.设置动画播放的次数
    self.imageView.animationRepeatCount = 0;
    
    // 4.设置动画执行的时间
    // 默认情况下:一秒钟30帧,一秒播放30张图片.一张图片的时间:1/30.0=0.033
    // 当设置成1.0,播放一轮图片所使用的时间. 1/20.0=0.05
    self.imageView.animationDuration = 0.5;
    
    // 6.查看是否正在动画
//     self.imageView.isAnimating
}

#pragma mark - 对动画的操作
- (IBAction)startAnimating {
    [self.imageView startAnimating];
}

- (IBAction)stopAnimating {
    [self.imageView stopAnimating];
}

6.拳皇动画

1.加载图片

#pragma mark - 执行动画
#pragma mark 站立
- (IBAction)stand {
    // 1.加载图片资源
    /*
    NSMutableArray *standImages = [NSMutableArray array];
    for (int i = 0; i < 10; i++) {
        NSString *imageName = [NSString stringWithFormat:@"stand_%d", i + 1];
        UIImage *image = [UIImage imageNamed:imageName];
        [standImages addObject:image];
    }
     */
    
    // 2.设置动画的图片
    self.imageView.animationImages = self.standImages;
    
    // 3.设置动画的执行次数
    self.imageView.animationRepeatCount = 0;
    
    // 4.开始动画
    [self.imageView startAnimating];
}

#pragma mark 小招
- (IBAction)smallZhao {
    // 1.加载图片资源
    /*
    NSMutableArray *smallZhaoImages = [NSMutableArray array];
    for (int i = 0; i < 21; i++) {
        NSString *imageName = [NSString stringWithFormat:@"xiaozhao1_%d", i + 1];
        UIImage *image = [UIImage imageNamed:imageName];
        [smallZhaoImages addObject:image];
    }
     */
    
    // 2.设置动画的图片
    self.imageView.animationImages = self.smallZhaoImages;
    
    // 3.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 4.开始动画
    [self.imageView startAnimating];
}

#pragma mark 大招
- (IBAction)bigZhao {
    // 1.加载图片资源
    /*
    NSMutableArray *bigZhaoImages = [NSMutableArray array];
    for (int i = 0; i < 87; i++) {
        NSString *imageName = [NSString stringWithFormat:@"dazhao_%d", i + 1];
        UIImage *image = [UIImage imageNamed:imageName];
        [bigZhaoImages addObject:image];
    }
     */
    
    // 2.设置动画的图片
    self.imageView.animationImages = self.bigZhaoImages;
    
    // 3.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 4.开始动画
    [self.imageView startAnimating];

2.拳皇动画(放招后站立)

// 所以的图片资源
@property (nonatomic, strong) NSArray *standImages;
@property (nonatomic, strong) NSArray *smallZhaoImages;  增加属性保存照片
@property (nonatomic, strong) NSArray *bigZhaoImages;

@end

@implementation ViewController

/*
 注意:
    通过imageName:来加载的图片,指向它的强引用销毁时,图片不会随着一起销毁
    通过imageWithContentOfFile:加载的图片,指向它的强引用销毁时,图片会随着一起销毁
 */

#pragma mark - 初始化数据
// 初始化一些控件
// 初始化一些数据
- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 1.加载站立所以的图片
    self.standImages = [self loadImagesWithImagePrefix:@"stand" count:10];
    
    // 2.加载小招的所以图片
    self.smallZhaoImages = [self loadImagesWithImagePrefix:@"xiaozhao1" count:21];
    
    // 3.加载大招的所以图片
    self.bigZhaoImages = [self loadImagesWithImagePrefix:@"dazhao" count:87];
    
    // 4.让人物处于站立状态
    [self stand];
}

// 抽取加载图片的方法 将相同操作抽取成一个方法封装,将不同的变量设置成参数,传递进来
- (NSArray *)loadImagesWithImagePrefix:(NSString *)imagePrefix count:(NSInteger)count
{
    NSMutableArray *images = [NSMutableArray array];
    for (int i = 0; i < count; i++) {
        NSString *imageName = [NSString stringWithFormat:@"%@_%d", imagePrefix, i + 1];
        // UIImage *image = [UIImage imageNamed:imageName];
        NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"];
        UIImage *image = [UIImage imageWithContentsOfFile:imagePath];
        [images addObject:image];
    }
    
    return images;
}

#pragma mark - 执行动画
#pragma mark 站立
- (IBAction)stand {
    // 1.设置动画的图片
    self.imageView.animationImages = self.standImages;
    
    // 2.设置动画的执行次数
    self.imageView.animationRepeatCount = 0;
    
    // 3.开始动画
    [self.imageView startAnimating];
}

#pragma mark 小招
- (IBAction)smallZhao {
    /*
    // 1.设置动画的图片
    self.imageView.animationImages = self.smallZhaoImages;
    
    // 2.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 3.开始动画
    [self.imageView startAnimating];
    
    // 4.执行站立动画
    NSTimeInterval delayTime = 1 / 30.0 * self.smallZhaoImages.count - 0.08;
    [self performSelector:@selector(stand) withObject:nil afterDelay:delayTime];
     */设置动画执行的时间,在动画执行完毕后执行后面的语句,延迟执行的应用
    [self playZhaoWithImages:self.smallZhaoImages];
}

#pragma mark 大招
- (IBAction)bigZhao {
    /*
    // 1.设置动画的图片
    self.imageView.animationImages = self.bigZhaoImages;
    
    // 2.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 3.开始动画
    [self.imageView startAnimating];
    
    // 4.执行站立动画
    NSTimeInterval delayTime = 1 / 30.0 * self.bigZhaoImages.count - 0.08;
    [self performSelector:@selector(stand) withObject:nil afterDelay:delayTime];
     */
    [self playZhaoWithImages:self.bigZhaoImages];
}

- (void)playZhaoWithImages:(NSArray *)images
{
    // 1.设置动画的图片
    self.imageView.animationImages = images;
    
    // 2.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 3.开始动画
    [self.imageView startAnimating];
    
    // 4.执行站立动画
    NSTimeInterval delayTime = 1 / 30.0 * images.count - 0.08;
    [self performSelector:@selector(stand) withObject:nil afterDelay:delayTime];
}

#pragma mark - 游戏结束
- (IBAction)gameOver {
    self.standImages = nil;
    self.smallZhaoImages = nil;
    self.bigZhaoImages = nil;
   ARC内存管理
    self.imageView.animationImages = nil;
}

3.IOS中播放声音

import "ViewController.h"
#import <AVFoundation/AVFoundation.h>拷贝头文件

@interface ViewController ()

// 播放器
@property (nonatomic, strong) AVPlayer *player;保存播放器,离开创建的方法不会呗销毁

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    /*
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"1201111234.mp3" ofType:nil];
    NSURL *url = [NSURL fileURLWithPath:filePath];
     */
    
    // 1.获取资源的URL 从MainBun加载音频资源
    NSURL *url = [[NSBundle mainBundle] URLForResource:@"1201111234.mp3" withExtension:nil];
    
    // 2.创建AVPlayer
    AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url];
    AVPlayer *player = [[AVPlayer alloc] initWithPlayerItem:item];
    
    self.player = player;
   
}

- (IBAction)play {
    [self.player play];播放音频方法
}

- (IBAction)nextMusic {
    // 替换item
    NSURL *url = [[NSBundle mainBundle] URLForResource:@"120125029.mp3" withExtension:nil];
    AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url];
    [self.player replaceCurrentItemWithPlayerItem:item];
    
    // 播放音效
    [self.player play];
}

4.播放拳皇动画的声音

- (void)playZhaoWithImages:(NSArray *)images withSoundName:(NSString *)soundName
{
    // 1.设置动画的图片
    self.imageView.animationImages = images;
    
    // 2.设置动画的执行次数
    self.imageView.animationRepeatCount = 1;
    
    // 3.开始动画
    [self.imageView startAnimating];
    
    // 4.执行站立动画
    NSTimeInterval delayTime = 1 / 30.0 * images.count - 0.08;
    [self performSelector:@selector(stand) withObject:nil afterDelay:delayTime];
    
    // 5.播放音效
    NSURL *url = [[NSBundle mainBundle] URLForResource:soundName withExtension:@"mp3"];
    AVPlayerItem *resplaceItem = [[AVPlayerItem alloc] initWithURL:url];
    [self.player replaceCurrentItemWithPlayerItem:resplaceItem];
    [self.player play];
    
    // 调节声音的速率  匹配声音跟动画同步
    self.player.rate = 1.5;
}