1、AVAudioPlayer
2、AVPlayer
3、系統(tǒng)音頻使用
4、錄音
5、視頻播放
6、圖層
- 音樂(lè)播放,都可以實(shí)現(xiàn)本地和網(wǎng)上播放
- AVAudioPlayer
- AVPlayer
AVAudioPlayer
// 注意這里的player一定要有強(qiáng)引用不然會(huì)被銷毀
// AVAudioPlayer播放本地音樂(lè)
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"咱們屯里的人" ofType:@"mp3"];
NSURL *url = [NSURL fileURLWithPath:filePath];
self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
// AVAudioPlayer播放網(wǎng)絡(luò)音樂(lè)
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播放本地音樂(lè)
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"咱們屯里的人" 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];
系統(tǒng)音頻使用
//本地url
NSString *filePath = [[NSBundle mainBundle]pathForResource:@"44th Street Medium" ofType:@"caf"];
//將該路徑下的文件轉(zhuǎn)成url格式
NSURL *fileUrl = [NSURL fileURLWithPath:filePath];
/*
CFURLRef: Core Foundation
__bridge:橋接 Foundation <---> Core Foundation
解決兩個(gè)框架中對(duì)象轉(zhuǎn)換時(shí) 內(nèi)存管理的問(wèn)題
//橋接:讓ARC管理內(nèi)存
//手動(dòng)管理內(nèi)存:
CFRelease(fileUrl)
CFRetain(<#CFTypeRef cf#>)
*/
//(1) 注冊(cè)系統(tǒng)聲音 (C函數(shù)的調(diào)用)
//soundID:標(biāo)示音頻
AudioServicesCreateSystemSoundID((__bridge CFURLRef)fileUrl, &soundID);
//(2)播放
AudioServicesPlaySystemSound(soundID);
//(3)振動(dòng)
// AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
//(4)銷毀 (在dealloc中)
-(void)dealloc{
/*
ARC中C語(yǔ)言的函數(shù)需要自己管理內(nèi)存,所以在這里,要移除或者銷毀注冊(cè)的系統(tǒng)聲音.
*/
//移除注冊(cè)的系統(tǒng)聲音
// AudioServicesRemoveSystemSoundCompletion(soundID);
//銷毀注冊(cè)的系統(tǒng)聲音(確定不再使用該id的音頻)
AudioServicesDisposeSystemSoundID(soundID);
}
- 錄音
#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
@interface ViewController ()
{
AVAudioRecorder *recorder;//錄音對(duì)象
AVAudioPlayer *player;//播放對(duì)象
NSURL *fileUrl;//文件路徑
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
//按下錄音
- (IBAction)recoder:(id)sender {
//(1)url
NSString *urlStr = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/recoder.aac"];
//刪除之前的錄音
[[NSFileManager defaultManager]removeItemAtPath:urlStr error:nil];
fileUrl = [NSURL fileURLWithPath:urlStr];
//(2)設(shè)置錄音的音頻參數(shù)
/*
1 ID號(hào):acc
2 采樣率(HZ):每秒從連續(xù)的信號(hào)中提取并組成離散信號(hào)的采樣個(gè)數(shù)
3 通道的個(gè)數(shù):(1 單聲道 2 立體聲)
4 采樣位數(shù)(8 16 24 32) 衡量聲音波動(dòng)變化的參數(shù)
5 大端或者小端 (內(nèi)存的組織方式)
6 采集信號(hào)是整數(shù)還是浮點(diǎn)數(shù)
7 音頻編碼質(zhì)量
*/
NSDictionary *info = @{
AVFormatIDKey:[NSNumber numberWithInt:kAudioFormatMPEG4AAC],//音頻格式
AVSampleRateKey:@1000,//采樣率
AVNumberOfChannelsKey:@2,//聲道數(shù)
AVLinearPCMBitDepthKey:@8,//采樣位數(shù)
AVLinearPCMIsBigEndianKey:@NO,
AVLinearPCMIsFloatKey:@NO,
AVEncoderAudioQualityKey:[NSNumber numberWithInt:AVAudioQualityMedium],
};
/*
url:錄音文件保存的路徑
settings: 錄音的設(shè)置
error:錯(cuò)誤
*/
recorder = [[AVAudioRecorder alloc]initWithURL:fileUrl settings:info error:nil];
[recorder prepareToRecord];
[recorder record];
}
//抬手結(jié)束錄音
- (IBAction)stopRecoder:(id)sender {
[recorder stop];
//手動(dòng)釋放
recorder =nil;
}
//播放錄音
- (IBAction)playRecoder:(id)sender {
//多次播放的時(shí)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
- 視頻播放
#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 {
//通知的監(jiān)聽
//視頻播放狀態(tài)改變的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
//視頻播放完成的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playStateDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
//本地視頻
//ios中視頻格式是MP4. 電腦的流媒體格式:flv,在手機(jī)上自動(dòng)轉(zhuǎn)成MP4
NSString *path = [[NSBundle mainBundle]pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:path];
//網(wǎng)絡(luò)視頻
// 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];
//設(shè)置播放器控制按鈕的樣式
moviePlayerC.controlStyle = MPMovieControlStyleEmbedded;//默認(rèn):嵌入式
[moviePlayerC prepareToPlay];
//手動(dòng)開啟
[moviePlayerC play];
}
- (IBAction)MPMoviePlayerVIewController:(id)sender {
NSString *path = [[NSBundle mainBundle]pathForResource:@"video" ofType:@"mp4"];
NSURL *url1 = [NSURL fileURLWithPath:path];
MPVC = [[MPMoviePlayerViewController alloc]initWithContentURL:url1];
//自動(dòng)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];
//播放視頻 (依賴于 AVKit)
AVPlayerViewController *avPlayerVC = [[AVPlayerViewController alloc]init];
//視頻播放器要播放視頻 AVPlayer (依賴 AVFoundation)
//AVPlayer
avPlayerVC.player = [AVPlayer playerWithURL:url1];
//手動(dòng)開始播放
[avPlayerVC.player play];
[self presentViewController:avPlayerVC animated:YES completion:NULL];
}
-(void)playStateDidChange:(NSNotification*)noti{
NSLog(@"播放狀態(tài)改變");
MPMoviePlayerController *playerC = noti.object;
//播放狀態(tài)
MPMoviePlaybackState state = playerC.playbackState;
if (state == MPMoviePlaybackStatePaused) {
NSLog(@"暫停");
}else if (state ==MPMoviePlaybackStateSeekingForward){
NSLog(@"快進(jìn)");
}
}
//視頻播放完成調(diào)用
-(void)playStateDidFinish:(NSNotification*)noti{
NSLog(@"播放完成");
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
- AVPlayer 圖層
/** 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"];
// 根據(jù)URL創(chuàng)建播放曲目
AVPlayerItem *item = [AVPlayerItem playerItemWithURL:url];
self.player = [AVPlayer playerWithPlayerItem:item];
// 創(chuàng)建一個(gè)視頻播放圖層
AVPlayerLayer *playLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
// 設(shè)置視頻播放frame
playLayer.frame = CGRectMake(0, 200, self.view.frame.size.width, 300);
// 將播放圖層添加到父控件
[self.view.layer addSublayer:playLayer];
[self.player play];
}