xamarin.forms中的音頻暫停C＃

因此，我使用需要播放和控制音頻的xamarin.forms構建應用程序。我目前有我的音頻文件在Android和iOS上播放，但我無法讓其他控件工作，如.Pause（）和.Stop（）xamarin.forms中的音頻暫停C＃

播放音頻在兩個示例中都有效。

我提前感謝你！

這是我爲每個平臺代碼

ANDROID：

using System; 
using Xamarin.Forms; 
using AudioPlayEx.Droid; 
using AudioToolbox; 
using Android.Media; 
using Android.Content.Res; 
using Android.OS; 
using Android; 

[assembly: Dependency(typeof(AudioService))] 
namespace AudioPlayEx.Droid 
{ 
    public class AudioService : IAudio 
    { 
     public AudioService() 
     { 
     } 

     MediaPlayer player; 

     public void PlayAudioFile(string fileName) 
     { 
      var player = new MediaPlayer(); 
      var fd = Android.App.Application.Context.Assets.OpenFd(fileName); 
      player.Prepared += (s, e) => 
      { 
       player.Start(); 
      }; 
      player.SetDataSource(fd.FileDescriptor, fd.StartOffset, fd.Length); 
      player.Prepare(); 
     } 

     protected MediaPlayer playme; 
     public void PauseAudioFile(String fileName) 
     { 
      var player = new MediaPlayer(); 
      var fd = Android.App.Application.Context.Assets.OpenFd(fileName); 
      player.Prepared += (s, e) => 
      { 
       player.Pause(); 
      }; 
      player.SetDataSource(fd.FileDescriptor, fd.StartOffset, fd.Length); 
      player.Prepare(); 
     } 

    } 
}

的iOS：

using System; 
using Xamarin.Forms; 
using AudioPlayEx; 
using AudioPlayEx.iOS; 
using System.IO; 
using Foundation; 
using AVFoundation; 

[assembly: Dependency(typeof(AudioService))] 
namespace AudioPlayEx.iOS 
{ 
    public class AudioService : IAudio 
    { 
     public AudioService() 
     { 
     } 

     public void PlayAudioFile(string fileName) 
     { 
      string sFilePath = NSBundle.MainBundle.PathForResource(Path.GetFileNameWithoutExtension(fileName), Path.GetExtension(fileName)); 
      var url = NSUrl.FromString(sFilePath); 
      var _player = AVAudioPlayer.FromUrl(url); 
      _player.FinishedPlaying += (object sender, AVStatusEventArgs e) => { 
       _player = null; 
      }; 
      _player.Play(); 
     } 


     public void PauseAudioFile(string fileName) 
     { 
      string sFilePath = NSBundle.MainBundle.PathForResource(Path.GetFileNameWithoutExtension(fileName), Path.GetExtension(fileName)); 
      var url = NSUrl.FromString(sFilePath); 
      var _player = AVAudioPlayer.FromUrl(url); 
      _player.Pause(); 
     } 
    } 
}

來源

2016-10-11 Dave Lynch

我想你需要你的AVAudioPlayer的實例保存到一個變量，並呼籲暫停上那個對象。現在你正在創建一個新的AVAudioPlayer，並在其上調用暫停，這是無所事事。我已經添加了iOS代碼來展示我的意思。 Android應該是相似的。

的iOS：

public class AudioService : IAudio 
{ 
    AVAudioPlayer _player; 

    public void PlayAudioFile(string fileName) 
    { 
     string sFilePath = NSBundle.MainBundle.PathForResource(Path.GetFileNameWithoutExtension(fileName), Path.GetExtension(fileName)); 
     var url = NSUrl.FromString(sFilePath); 
     _player = AVAudioPlayer.FromUrl(url); 
     _player.FinishedPlaying += (object sender, AVStatusEventArgs e) => { 
      _player = null; 
     }; 
     _player.Play(); 
    } 


    public void PauseAudioFile(string fileName) 
    { 
     _player.Pause(); 
    } 
}

來源

2016-10-11 12:56:35

xamarin.forms中的音頻暫停C＃

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