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实现思路
1、加载图片
2、播放音乐
实现思想
1、封装思想
抽取相同代码生成一个新的方法，通过传递参数调用该方法；
2、内存管理思想
不需要每次调用方法时都重新加载图片，for循环加载图片写在ViewdidLoad中
下列代码没有对运行过程中内存管理进行优化
其中加载图片有两种方法：
通过imageNmae加载有缓存
通过imageWithContentsOfFile加载无缓存
有无缓存的区别：
有缓存，使用时不需要重新加载
无缓存，使用时才加载
#import "ViewController.h" #import <AVFoundation/AVFoundation.h> @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *imageView; //播放器 @property (nonatomic, strong) AVPlayer *player; //动画 @property (nonatomic, strong) NSArray *standImages; @property (nonatomic, strong) NSArray *firstSkillImages; @property (nonatomic, strong) NSArray *secondSkillImages; @property (nonatomic, strong) NSArray *thirdSkillImages; @property (nonatomic, strong) NSArray *superSkillImages; @property (nonatomic, strong) NSArray *deadImages; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // 初始化 / / 加载动画 // 站立 self.standImages = [self loadImagesWithImagePrefix:@"stand" Count:10]; // 小招 self.firstSkillImages = [self loadImagesWithImagePrefix:@"xiaozhao1" Count:21]; self.secondSkillImages = [self loadImagesWithImagePrefix:@"xiaozhao2" Count:35]; self.thirdSkillImages = [self loadImagesWithImagePrefix:@"xiaozhao3" Count:39]; // 大招 self.superSkillImages = [self loadImagesWithImagePrefix:@"dazhao" Count:87]; // 死亡 self.deadImages = [self loadImagesWithImagePrefix:@"dead" Count:23]; // 让人物一开始就处于站立状态 [self stand]; ／／ 加载音乐 NSURL *url = [[NSBundle mainBundle] URLForResource:@"stand" withExtension:@"mp3"]; AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url]; self.player = [[AVPlayer alloc] initWithPlayerItem:item]; } #pragma mark - 功能方法 #pragma mark - 加载图片 - (NSArray *)loadImagesWithImagePrefix:(NSString *)prefix Count:(NSInteger)count { NSMutableArray *images = [NSMutableArray array]; for (int i = 0; i < count; i++) { NSString *imageName = [NSString stringWithFormat:@"%@_%i", prefix, i + 1]; NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [images addObject:image]; } return images; } #pragma mark - 执行动画并播放相应的音效 - (void)playZhaoWithImages:(NSArray *)images withSoundName:(NSString *)soundName { // 设置播放的动画 self.imageView.animationImages = images; // 设置播放的次数 self.imageView.animationRepeatCount = 1; // 执行动画 [self.imageView startAnimating]; // 恢复站立 NSTimeInterval delayTime = 1 / 30.0 *images.count - 0.1; [self performSelector:@selector(stand) withObject:nil afterDelay:delayTime]; // 播放音乐 NSURL *url = [[NSBundle mainBundle] URLForResource:soundName withExtension:@"mp3"]; AVPlayerItem *replaceItem = [[AVPlayerItem alloc] initWithURL:url]; [self.player replaceCurrentItemWithPlayerItem:replaceItem]; self.player.rate = 1.5; } #pragma mark - 执行动画 #pragma mark - 站立 - (IBAction)stand { // 设置播放的动画 self.imageView.animationImages = self.standImages; // 设置播放的次数 self.imageView.animationRepeatCount = 0; // 设置执行的时间 // self.imageView.animationDuration = 0.8; [self.imageView startAnimating]; } #pragma mark - 小招 - (IBAction)firstSkill { [self playZhaoWithImages:self.firstSkillImages withSoundName:@"xiaozhao1"]; } - (IBAction)secondSkill { [self playZhaoWithImages:self.secondSkillImages withSoundName:@"xiaozhao2"]; } - (IBAction)thirdSkill { [self playZhaoWithImages:self.thirdSkillImages withSoundName:@"xiaozhao3"]; } #pragma mark - 大招 - (IBAction)superSkill { [self playZhaoWithImages:self.superSkillImages withSoundName:@"dazhao"]; } #pragma mark - 死亡 - (IBAction)dead { // 设置播放的动画 self.imageView.animationImages = self.deadImages; // 设置播放的次数 self.imageView.animationRepeatCount = 1; [self.imageView startAnimating]; } #pragma mark - 游戏结束 - (IBAction)gameOver { self.standImages = nil; self.firstSkillImages =nil; self.secondSkillImages = nil; self.thirdSkillImages = nil; self.superSkillImages = nil; self.deadImages = nil; self.player = nil; self.imageView.animationImages = nil; } @end
优化后的代码
#import "ViewController.h" #import <AVFoundation/AVFoundation.h> @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *imageView; //播放器 @property (nonatomic, strong) AVPlayer *player; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // 初始化 // 让人物一开始就处于站立状态 [self stand]; NSURL *url = [[NSBundle mainBundle] URLForResource:@"stand" withExtension:@"mp3"]; AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url]; self.player = [[AVPlayer alloc] initWithPlayerItem:item]; } #pragma mark - 功能方法 #pragma mark - 加载图片 - (void)loadImagesWithImagePrefix:(NSString *)prefix Count:(NSInteger)count { // if ([self.imageView isAnimating]) return; NSMutableArray *images = [NSMutableArray array]; for (int i = 0; i < count; i++) { NSString *imageName = [NSString stringWithFormat:@"%@_%i", prefix, i + 1]; NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [images addObject:image]; } // 设置播放的动画 self.imageView.animationImages = images; // 设置播放的次数 self.imageView.animationRepeatCount = ![prefix isEqualToString:@"stand"]; self.imageView.image = [UIImage imageNamed:@"stand_1"]; self.imageView.animationDuration = count * 0.04; // 执行动画 [self.imageView startAnimating]; // 恢复站立 if ([prefix isEqualToString:@"stand"]) return; [self performSelector:@selector(stand) withObject:nil afterDelay:self.imageView.animationDuration]; } #pragma mark - 执行动画并播放相应的音效 - (void)playMusicWithSoundName:(NSString *)soundName { // 播放音乐 NSURL *url = [[NSBundle mainBundle] URLForResource:soundName withExtension:@"mp3"]; AVPlayerItem *replaceItem = [[AVPlayerItem alloc] initWithURL:url]; [self.player replaceCurrentItemWithPlayerItem:replaceItem]; self.player.rate = 1.5; } #pragma mark - 执行动画 #pragma mark - 站立 - (IBAction)stand { [self loadImagesWithImagePrefix:@"stand" Count:10]; [self playMusicWithSoundName:@"stand"]; } #pragma mark - 小招 - (IBAction)firstSkill { [self loadImagesWithImagePrefix:@"xiaozhao1" Count:21]; [self playMusicWithSoundName:@"xiaozhao1"]; } - (IBAction)secondSkill { } - (IBAction)thirdSkill { } #pragma mark - 大招 - (IBAction)superSkill { [self loadImagesWithImagePrefix:@"dazhao" Count:87]; [self playMusicWithSoundName:@"dazhao"]; } #pragma mark - 死亡 - (IBAction)dead { } #pragma mark - 游戏结束 - (IBAction)gameOver { self.player = nil; self.imageView.animationImages = nil; } @end
加载图片
#pragma mark - 加载一系列图片 //传入图片的名称的前缀及图片的数量 - (NSArray *)loadImagesWithImagePrefix:(NSString *)prefix Count:(NSInteger)count { NSMutableArray *images = [NSMutableArray array]; for (int i = 0; i < count; i++) { NSString *imageName = [NSString stringWithFormat:@"%@_%i", prefix, i + 1]; NSString *imagePath = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [images addObject:image]; } return images; }
加载音乐
#import <AVFoundation/AVFoundation.h> #pragma mark - 创建播放器AVPlayer， NSURL *url = [[NSBundle mainBundle] URLForResource:@"stand" withExtension:@"mp3"]; AVPlayerItem *item = [[AVPlayerItem alloc] initWithURL:url]; self.player = [[AVPlayer alloc] initWithPlayerItem:item]; #pragma mark - 传入要播放的音乐的名称（soundName）然后播放 // 播放音乐 NSURL *url = [[NSBundle mainBundle] URLForResource:soundName withExtension:@"mp3"]; AVPlayerItem *replaceItem = [[AVPlayerItem alloc] initWithURL:url]; [self.player replaceCurrentItemWithPlayerItem:replaceItem]; self.player.rate = 1.5;
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原文地址：http://www.cnblogs.com/dreamWanweidong/p/4999026.html
