在 iOS 应用中播放 mp3 文件
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playing a mp3 file in iOS app
提问by user2444410
I can't figure out how to play a music file in an iPhone game.
我不知道如何在 iPhone 游戏中播放音乐文件。
Im creating a Game and I am trying to figure out how to play music whenever the app is launched.
我正在创建一个游戏，我试图弄清楚在启动应用程序时如何播放音乐。
I tried this:
我试过这个：
- (void)awakeFromNib {
NSString *path = [[NSBundle mainBundle] pathForResource:@"musicamenu" ofType:@"mp3"];
AVAudioPlayer *theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
[theAudio play];
}
回答by Sam B
This is how you do it. In your v1AppDelegate.h file add
这就是你如何做到的。在您的 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
Now in your v1AppDelegate.m file add this
现在在你的 v1AppDelegate.m 文件中添加这个
#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;
}
If you wish to stop or start this music from anywhere else in your code then simply add this
如果您想从代码中的任何其他地方停止或开始播放此音乐，只需添加此
#import "v1AppDelegate.h"
- (IBAction)stopMusic
{
v1AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
[appDelegate.myAudioPlayer stop];
}
- (IBAction)startMusic
{
v1AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
[appDelegate.myAudioPlayer play];
}
回答by sunkehappy
I recommend to add the play music method in applicationDidBecomeActive:method. Because you want the music played every time the app is launched. Note you should hold a reference to the player. Else the music will not be played.
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，您应该持有对播放器的引用。否则音乐将不会播放。
- (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];
}
回答by Kevin ABRIOUX
For Swift 3.1 :
对于 Swift 3.1 ：
Use this two imports :
使用这两个导入：
import AVFoundation
import AudioToolbox
Create a reference for your AVAudioPlayer :
为您的 AVAudioPlayer 创建一个参考：
private var mAudioPlayer : AVAudioPlayer?
Use this function for play a sound you are storing in your app :
使用此功能播放您存储在应用程序中的声音：
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()
}
