音频文件无法在目标 C 中播放

Posted 2023-02-25

【中文标题】音频文件无法在目标 C 中播放

【英文标题】：Audio file not play in objective C

【发布时间】：2017-03-31 06:10:01

【问题描述】：

- (void)play 
    NSURL *imgPath = [[NSBundle mainBundle] URLForResource:@"sound" withExtension:@"mp3"];
    NSString *path = [imgPath path];
    NSData *data = [[NSFileManager defaultManager] contentsAtPath:path];
    NSLog(@"%@",data);
    NSError *error;   
    self.avPlayer = [[AVAudioPlayer alloc] initWithData:data error:&error];
    [self.avPlayer play];
    

【参考方案1】：

与其转换成 NSData，不如将 URL 传递给 AVAudioPlayer。

    NSURL *imgPath = [[NSBundle mainBundle] URLForResource:@"sound" withExtension:@"mp3"];

    NSError *error;

    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:imgPath
                                                         error:&error];
    self.player.numberOfLoops = 0; //Infinite
    self.player.delegate  = self;
    [self.player prepareToPlay];
    [self.player play];

【讨论】：

另外，请确保您进行了正确的导入：#import #import 参考：- ***.com/a/11528463

【参考方案2】：

您的代码运行良好。问题出在您尝试记录数据时。 或者尝试使用initWithContentsOfURL 方法。

#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>


@interface ViewController ()

@property (nonatomic, strong) AVAudioPlayer *avPlayer;

@end

@implementation ViewController

- (void)viewDidLoad 
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSURL *imgPath = [[NSBundle mainBundle] URLForResource:@"1" withExtension:@"mp3"];

    NSString *path = [imgPath path];

    NSData *data = [[NSFileManager defaultManager] contentsAtPath:path];

   // NSLog(@"%@",data);

    NSError *error;

    self.avPlayer = [[AVAudioPlayer alloc] initWithData:data error:&error];

 //   self.avPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:imgPath error:&error];

    [self.avPlayer play];