1、AVAudioPlayer
2、AVPlayer
3、系统音频使用
4、录音
5、视频播放
6、图层
- 音乐播放,都可以实现本地和网上播放
- AVAudioPlayer
- AVPlayer
AVAudioPlayer
// 注意这里的player一定要有强引用不然会被销毁
// AVAudioPlayer播放本地音乐
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"咱们屯里的人" ofType:@"mp3"];
NSURL *url = [NSURL fileURLWithPath:filePath];
self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
// AVAudioPlayer播放网络音乐
NSURL *url = [NSURL URLWithString:@"http://mp3.qqmusic.cc/yq/107771414.mp3"];
NSData *data = [NSData dataWithContentsOfURL:url];
self.player = [[AVAudioPlayer alloc] initWithData:data error:nil];
[self.player play];
AVPlayer
// AVlayer播放本地音乐
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"咱们屯里的人" ofType:@"mp3"];
NSURL *url = [NSURL fileURLWithPath:filePath];
self.player = [AVPlayer playerWithURL:url];
NSURL *url = [NSURL URLWithString:@"http://mp3.qqmusic.cc/yq/107771414.mp3"];
self.player = [AVPlayer playerWithURL:url];
[self.player play];
系统音频使用
//本地url
NSString *filePath = [[NSBundle mainBundle]pathForResource:@"44th Street Medium" ofType:@"caf"];
//将该路径下的文件转成url格式
NSURL *fileUrl = [NSURL fileURLWithPath:filePath];
/*
CFURLRef: Core Foundation
__bridge:桥接 Foundation <---> Core Foundation
解决两个框架中对象转换时 内存管理的问题
//桥接:让ARC管理内存
//手动管理内存:
CFRelease(fileUrl)
CFRetain(<#CFTypeRef cf#>)
*/
//(1) 注册系统声音 (C函数的调用)
//soundID:标示音频
AudioServicesCreateSystemSoundID((__bridge CFURLRef)fileUrl, &soundID);
//(2)播放
AudioServicesPlaySystemSound(soundID);
//(3)振动
// AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
//(4)销毁 (在dealloc中)
-(void)dealloc{
/*
ARC中C语言的函数需要自己管理内存,所以在这里,要移除或者销毁注册的系统声音.
*/
//移除注册的系统声音
// AudioServicesRemoveSystemSoundCompletion(soundID);
//销毁注册的系统声音(确定不再使用该id的音频)
AudioServicesDisposeSystemSoundID(soundID);
}
- 录音
#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
@interface ViewController ()
{
AVAudioRecorder *recorder;//录音对象
AVAudioPlayer *player;//播放对象
NSURL *fileUrl;//文件路径
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
//按下录音
- (IBAction)recoder:(id)sender {
//(1)url
NSString *urlStr = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/recoder.aac"];
//删除之前的录音
[[NSFileManager defaultManager]removeItemAtPath:urlStr error:nil];
fileUrl = [NSURL fileURLWithPath:urlStr];
//(2)设置录音的音频参数
/*
1 ID号:acc
2 采样率(HZ):每秒从连续的信号中提取并组成离散信号的采样个数
3 通道的个数:(1 单声道 2 立体声)
4 采样位数(8 16 24 32) 衡量声音波动变化的参数
5 大端或者小端 (内存的组织方式)
6 采集信号是整数还是浮点数
7 音频编码质量
*/
NSDictionary *info = @{
AVFormatIDKey:[NSNumber numberWithInt:kAudioFormatMPEG4AAC],//音频格式
AVSampleRateKey:@1000,//采样率
AVNumberOfChannelsKey:@2,//声道数
AVLinearPCMBitDepthKey:@8,//采样位数
AVLinearPCMIsBigEndianKey:@NO,
AVLinearPCMIsFloatKey:@NO,
AVEncoderAudioQualityKey:[NSNumber numberWithInt:AVAudioQualityMedium],
};
/*
url:录音文件保存的路径
settings: 录音的设置
error:错误
*/
recorder = [[AVAudioRecorder alloc]initWithURL:fileUrl settings:info error:nil];
[recorder prepareToRecord];
[recorder record];
}
//抬手结束录音
- (IBAction)stopRecoder:(id)sender {
[recorder stop];
//手动释放
recorder =nil;
}
//播放录音
- (IBAction)playRecoder:(id)sender {
//多次播放的时候
player = nil;
player = [[AVAudioPlayer alloc]initWithContentsOfURL:fileUrl error:nil];
if (player) {
[player prepareToPlay];
[player play];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
- 视频播放
#import "ViewController.h"
#import <MediaPlayer/MediaPlayer.h>
#import <AVKit/AVKit.h>
#import <AVFoundation/AVFoundation.h>
@interface ViewController ()
{
MPMoviePlayerController *moviePlayerC; //NSobject
MPMoviePlayerViewController *MPVC; //UIViewController
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)MPMoviePlayerController:(id)sender {
//通知的监听
//视频播放状态改变的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
//视频播放完成的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playStateDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
//本地视频
//ios中视频格式是MP4. 电脑的流媒体格式:flv,在手机上自动转成MP4
NSString *path = [[NSBundle mainBundle]pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:path];
//网络视频
// NSURL *url2 = [NSURL URLWithString:@"http://vf1.mtime.cn/Video/2012/04/23/mp4/120423212602431929.mp4"];
//
moviePlayerC = [[MPMoviePlayerController alloc]initWithContentURL:url1];
moviePlayerC.view.frame = CGRectMake(0, 300, 300, 150);
[self.view addSubview:moviePlayerC.view];
//设置播放器控制按钮的样式
moviePlayerC.controlStyle = MPMovieControlStyleEmbedded;//默认:嵌入式
[moviePlayerC prepareToPlay];
//手动开启
[moviePlayerC play];
}
- (IBAction)MPMoviePlayerVIewController:(id)sender {
NSString *path = [[NSBundle mainBundle]pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:path];
MPVC = [[MPMoviePlayerViewController alloc]initWithContentURL:url1];
//自动播放
[self presentViewController:MPVC animated:YES completion:NULL];
}
- (IBAction)AVPlayerVIewController:(id)sender {
NSString *path = [[NSBundle mainBundle]pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:path];
//播放视频 (依赖于 AVKit)
AVPlayerViewController *avPlayerVC = [[AVPlayerViewController alloc]init];
//视频播放器要播放视频 AVPlayer (依赖 AVFoundation)
//AVPlayer
avPlayerVC.player = [AVPlayer playerWithURL:url1];
//手动开始播放
[avPlayerVC.player play];
[self presentViewController:avPlayerVC animated:YES completion:NULL];
}
-(void)playStateDidChange:(NSNotification*)noti{
NSLog(@"播放状态改变");
MPMoviePlayerController *playerC = noti.object;
//播放状态
MPMoviePlaybackState state = playerC.playbackState;
if (state == MPMoviePlaybackStatePaused) {
NSLog(@"暂停");
}else if (state ==MPMoviePlaybackStateSeekingForward){
NSLog(@"快进");
}
}
//视频播放完成调用
-(void)playStateDidFinish:(NSNotification*)noti{
NSLog(@"播放完成");
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
- AVPlayer 图层
/** 播放器 */
@property (nonatomic, strong) AVPlayer *player;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// url
NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/resources/videos/minion_01.mp4"];
// 根据URL创建播放曲目
AVPlayerItem *item = [AVPlayerItem playerItemWithURL:url];
self.player = [AVPlayer playerWithPlayerItem:item];
// 创建一个视频播放图层
AVPlayerLayer *playLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
// 设置视频播放frame
playLayer.frame = CGRectMake(0, 200, self.view.frame.size.width, 300);
// 将播放图层添加到父控件
[self.view.layer addSublayer:playLayer];
[self.player play];
}
