Question

我无法弄清楚如何在iPhone游戏中播放音乐文件。

我创建一个游戏，我试图找出每当应用程序启动时如何播放音乐。

我试过了：

- (void)awakeFromNib {

    NSString *path = [[NSBundle mainBundle] pathForResource:@"musicamenu" ofType:@"mp3"];

    AVAudioPlayer *theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];

    [theAudio play];


}

Answer 1

这是你如何做到的。在v1AppDelegate.h文件中添加

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <AudioToolbox/AudioToolbox.h>

@interface v1AppDelegate : UIResponder <UIApplicationDelegate>
{
    AVAudioPlayer *myAudioPlayer;
}

@property (nonatomic, retain) AVAudioPlayer *myAudioPlayer;

@property (strong, nonatomic) UIWindow *window;

@end

现在在v1AppDelegate.m文件中添加此

#import "v1AppDelegate.h"
#import <AVFoundation/AVFoundation.h>
#import <AudioToolbox/AudioToolbox.h>

@implementation v1AppDelegate

@synthesize window = _window;

@synthesize myAudioPlayer;


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    //start a background sound
    NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:@"Soothing_Music2_Long" ofType: @"mp3"];
    NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:soundFilePath ];    
    myAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil];
    myAudioPlayer.numberOfLoops = -1; //infinite loop
    [myAudioPlayer play];


    // Override point for customization after application launch.
    return YES;
}

如果您希望从代码中的任何其他位置停止或启动此音乐，只需添加此

即可

#import "v1AppDelegate.h"    
- (IBAction)stopMusic
    {
        v1AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
        [appDelegate.myAudioPlayer stop];
    }


    - (IBAction)startMusic
    {
        v1AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
        [appDelegate.myAudioPlayer play];
    }

Answer 2

我建议在applicationDidBecomeActive:方法中添加播放音乐方法。因为您希望每次启动应用程序时都播放音乐。请注意，您应该持有对玩家的引用。否则音乐将无法播放。

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Play music on another queue so that the main queue is not blocked.
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        [self playMusic];
    });
}

- (void)playMusic
{
    NSString *path = [[NSBundle mainBundle] pathForResource:@"done" ofType:@"mp3"];
    NSError *error = nil;
    NSURL *url = [NSURL fileURLWithPath:path];
    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
    [self.player play];
}

Answer 3

对于Swift 3.1：

使用这两个导入：

import AVFoundation
import AudioToolbox

为AVAudioPlayer创建一个引用：

private var mAudioPlayer : AVAudioPlayer?

使用此功能播放存储在应用中的声音：

func onTapSound(){
        let soundFile = Bundle.main.path(forResource: "slap_placeholder.wav", ofType: nil)
        let url = URL(fileURLWithPath: soundFile!)
        self.mAudioPlayer = try! AVAudioPlayer(contentsOf: url as URL)
        self.mAudioPlayer?.play()
}

在iOS应用中播放mp3文件

3 个答案: