制作播放视频 

首先先导入 以下框架

ViewController.h

引入<AVFoundation/AVFoundation.h>头文件

遵守AVAudioPlayerDelegate协议

创建控制器属性

//音频控件

@property (nonatomic,strong)AVAudioPlayer *thePlayer;

//进度条

@property (nonatomic,strong)UIProgressView *theProgress;

//按钮

@property (nonatomic,strong)UIButton *theBtn;

//定时器

@property (nonatomic,strong)NSTimer *theTimer;

//进度条

-(UIProgressView *)theProgress{

if (!_theProgress) {

//初始化进度条

_theProgress = [[UIProgressView alloc]initWithFrame:CGRectMake(100, 200, 200, 20)];

}

return _theProgress;

}

-(UIButton *)theBtn{

if (!_theBtn) {

//创建按钮状态

_theBtn  = [UIButton buttonWithType: UIButtonTypeRoundedRect];

//设置按钮位置

_theBtn.frame = CGRectMake(100, 260, 200, 44);

//添加按钮名称

[_theBtn setTitle:@"▶️" forState:UIControlStateNormal];

//给按钮添加点击事件

[_theBtn addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

}

return _theBtn;

}

-(NSTimer *)theTimer{

if (!_theTimer) {

//设置定时器

_theTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(timer) userInfo:nil repeats:YES];

}

return _theTimer;

}

-(void)timer{

//设置时间

CGFloat Number = self.thePlayer.currentTime / self.thePlayer.duration;

//赋值给进度条

[self.theProgress setProgress:Number animated:YES];

}

-(AVAudioPlayer *)thePlayer{

if (!_thePlayer) {

//取出文件路径

NSString *filePath = [[NSBundle mainBundle]pathForResource:@"十年.mp3" ofType:nil];

//转换为NSURL状态

NSURL *url = [NSURL fileURLWithPath:filePath];

//初始化音频对象

_thePlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:nil];

//设置是否单曲循环播放 0 不循环  N次 循环N次  -1无限循环

_thePlayer.numberOfLoops = 0;

//设置代理

_thePlayer.delegate = self;

//将音频添加到缓存中。  准备播放

[_thePlayer prepareToPlay];

}

return _thePlayer;

}

-(void)click:(UIButton *)btn{

NSString *newStr = btn.titleLabel.text;

if ([newStr isEqualToString:@"▶️"]) {

[self.theBtn setTitle:@"⏸" forState:UIControlStateNormal];

if (![self.thePlayer isPlaying]) {

[self.thePlayer play];

self.theTimer.fireDate = [NSDate distantPast];

}

}if ([newStr isEqualToString:@"⏸"]) {

[self.theBtn setTitle:@"▶️" forState:UIControlStateNormal];

[self.thePlayer pause];

self.theTimer.fireDate = [NSDate distantFuture];

}

}

- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{

[self.theBtn setTitle:@"▶️" forState:UIControlStateNormal];

}

ViewDidLoad 方法里添加控件到视图

- (void)viewDidLoad {

[super viewDidLoad];

[self.view addSubview:self.theProgress];

[self.view addSubview:self.theBtn];

}