#import "AppDelegate.h"
#import "FirstVC.h"
@implementation AppDelegate

?

- (void)dealloc
{
??? [_window release];
??? [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
??? self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
??? // Override point for customization after application launch.
???
??? FirstVC *firstVC = [[FirstVC alloc] init];
??? self.window.rootViewController = firstVC;
??? [firstVC release];
???
??? self.window.backgroundColor = [UIColor whiteColor];
??? [self.window makeKeyAndVisible];
??? return YES;
}

?

?

#import <UIKit/UIKit.h>

//要想使用封裝好的音頻類,導入框,導入類頭文件,缺一不可;
#import <AVFoundation/AVFoundation.h>

@interface FirstVC : UIViewController<AVAudioPlayerDelegate>
{
??? AVAudioPlayer *avAudioPlayer;?? //播放器player
??? UIProgressView *progressV;????? //播放進度
??? UISlider *volumeSlider;???????? //聲音控制
??? NSTimer *timer;???????????????? //監控音頻播放進度
}

@end

- (void)viewDidLoad
{
??? [super viewDidLoad];
??? // Do any additional setup after loading the view.
??? //初始化三個button
??? UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
??? [button setFrame:CGRectMake(100, 100, 60, 40)];
??? [button setTitle:@"Play" forState:UIControlStateNormal];
??? [button addTarget:self action:@selector(play) forControlEvents:UIControlEventTouchUpInside];
??? [self.view addSubview:button];
???
??? UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
??? [button1 setFrame:CGRectMake(100, 150, 60, 40)];
??? [button1 setTitle:@"pause" forState:UIControlStateNormal];
??? [button1 addTarget:self action:@selector(pause) forControlEvents:UIControlEventTouchUpInside];
??? [self.view addSubview:button1];
???
??? UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
??? [button2 setFrame:CGRectMake(100, 200, 60, 40)];
??? [button2 setTitle:@"stop" forState:UIControlStateNormal];
??? [button2 addTarget:self action:@selector(stop) forControlEvents:UIControlEventTouchUpInside];
??? [self.view addSubview:button2];
???
??? //從budle路徑下讀取音頻文件　　輕音樂 - 薩克斯回家 這個文件名是你的歌曲名字,mp3是你的音頻格式
??? NSString *string = [[NSBundle mainBundle] pathForResource:@"輕音樂 - 薩克斯回家" ofType:@"mp3"];
??? //把音頻文件轉換成url格式
??? NSURL *url = [NSURL fileURLWithPath:string];
??? //初始化音頻類 并且添加播放文件
??? avAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
??? //設置代理
??? avAudioPlayer.delegate = self;
???
??? //設置初始音量大小
?? // avAudioPlayer.volume = 1;
???
??? //設置音樂播放次數? -1為一直循環
??? avAudioPlayer.numberOfLoops = -1;
???
??? //預播放
??? [avAudioPlayer prepareToPlay];
???
??? //初始化一個播放進度條
??? progressV = [[UIProgressView alloc] initWithFrame:CGRectMake(20, 50, 200, 20)];
??? [self.view addSubview:progressV];
??? [progressV release];
???
??? //用NSTimer來監控音頻播放進度
??? timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self
???????????????????????????????????????????????????? selector:@selector(playProgress)
???????????????????????????????????????????????????? userInfo:nil repeats:YES];
??? //初始化音量控制
??? volumeSlider = [[UISlider alloc] initWithFrame:CGRectMake(20, 70, 200, 20)];
??? [volumeSlider addTarget:self action:@selector(volumeChange)
?????????????????????? forControlEvents:UIControlEventValueChanged];
??? //設置最小音量
??? volumeSlider.minimumValue = 0.0f;
??? //設置最大音量
??? volumeSlider.maximumValue = 10.0f;
??? //初始化音量為多少
??? volumeSlider.value = 5.0f;
???
??? [self.view addSubview:volumeSlider];
??? [volumeSlider release];

?

??? //聲音開關控件(靜音)
??? UISwitch *swith = [[UISwitch alloc] initWithFrame:CGRectMake(100, 20, 60, 40)];
??? [swith addTarget:self action:@selector(onOrOff:) forControlEvents:UIControlEventValueChanged];
??? //默認狀態為打開
??? swith.on = YES;
??? [self.view addSubview:swith];
??? [swith? release];
}

//播放
- (void)play
{?
??? [avAudioPlayer play];
}
??? //暫停
- (void)pause
{
??? [avAudioPlayer pause];
}
??? //停止
- (void)stop
{
??? avAudioPlayer.currentTime = 0;? //當前播放時間設置為0
??? [avAudioPlayer stop];
}
//播放進度條
- (void)playProgress
{
??? //通過音頻播放時長的百分比,給progressview進行賦值;
??? progressV.progress = avAudioPlayer.currentTime/avAudioPlayer.duration;
}
//聲音開關(是否靜音)
- (void)onOrOff:(UISwitch *)sender
{
??? avAudioPlayer.volume = sender.on;
}

?

//播放音量控制
- (void)volumeChange
{
?? avAudioPlayer.volume = volumeSlider.value;
}

//播放完成時調用的方法? (代理里的方法),需要設置代理才可以調用
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
??? [timer invalidate]; //NSTimer暫停?? invalidate? 使...無效;
}

- (void)dealloc
{
??? [avAudioPlayer release];
??? [progressV release];
??? [volumeSlider release];
??? [timer release];
??? [super dealloc];
}

NSString *urlStr = @"http://…………xxx.mp3";?
NSURL *url = [[NSURL alloc]initWithString:urlStr];?
NSData * audioData = [NSData dataWithContentsOfURL:url];?
?
//將數據保存到本地指定位置??????????
NSString *docDirPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];?
NSString *filePath = [NSString stringWithFormat:@"%@/%@.mp3", docDirPath , @"temp"];?
[audioData writeToFile:filePath atomically:YES];?
???????
//播放本地音樂???????????
NSURL *fileURL = [NSURL fileURLWithPath:filePath];?
player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil];?
[player play];

[[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryPlaybackerror:nil];

上文是詳解iOS App中調用AVAudioPlayer播放音頻文件的用法，相信大家都了解了吧，收藏武林技術頻道網，可以讓大家學習更多的技術知識。