如何以Xamarin形式播放音频? [英] How to play audio in xamarin forms?

问题描述

我正在尝试播放本地存储的音频文件.我正在使用 Xam.Plugin.SimpleAudioPlayer 播放音频.对于UWP和Android，分别在Assets文件夹中添加文件，并将Build Action分别设置为Content和Android Asset.

I am trying to play an audio file which is stored locally. I am using Xam.Plugin.SimpleAudioPlayer for playing audio. For UWP and Android, added the files in the Assets folder with the Build Action set to Content and Android Asset respectively.

我的代码:

private void PlayAudio()
    {
        try
        {
            var stream = GetStreamFromFile("audio.mp3");
            var audio = Plugin.SimpleAudioPlayer.CrossSimpleAudioPlayer.Current;
            audio.Load(stream);
            audio.Play();
        }
        catch (Exception e)
        {
            Debug.WriteLine("exception:>>" + e);
        }
    }

    Stream GetStreamFromFile(string filename)
    {
        var assembly = typeof(App).GetTypeInfo().Assembly;

        var stream = assembly.GetManifestResourceStream("AudioPlay." + filename);

        return stream;
    }

但是在android和UWP中出现异常却没有在IOS中签入.

But getting an exception in android and UWP, didn't check in IOS.

Android异常:

Android Exception:

[0:]异常:>> System.NullReferenceException:对象引用未设置为对象的实例.在C:\ dev \ open \ Xamarin-Plugins \ SimpleAudioPlayer \ SimpleAudioPlayer \ Plugin.SimpleAudioPlayer.Android \ SimpleAudioPlayerImplementation.cs:100中的Plugin.SimpleAudioPlayer.SimpleAudioPlayerImplementation.Load(System.IO.Stream audioStream)[0x00050]处在F:\ AudioPlay \ AudioPlay \ AudioPlay \ MainPage.xaml.cs:63的AudioPlay.MainPage.PlayAudio()[0x00014]

[0:] exception:>>System.NullReferenceException: Object reference not set to an instance of an object. at Plugin.SimpleAudioPlayer.SimpleAudioPlayerImplementation.Load (System.IO.Stream audioStream) [0x00050] in C:\dev\open\Xamarin-Plugins\SimpleAudioPlayer\SimpleAudioPlayer\Plugin.SimpleAudioPlayer.Android\SimpleAudioPlayerImplementation.cs:100 at AudioPlay.MainPage.PlayAudio () [0x00014] in F:\AudioPlay\AudioPlay\AudioPlay\MainPage.xaml.cs:63

我正在使用.mp3文件.我在此实现中缺少什么吗?请帮助我解决此问题?

I am using .mp3 file. Am I missing something in this implementation? Please help me to fix this issue?

推荐答案

您只需要将mp3文件直接放在共享项目中即可.并调用方法

You just need to directly put the mp3 file in share project . And call the method

var stream = GetStreamFromFile("xxx.mp3");
var audio = Plugin.SimpleAudioPlayer.CrossSimpleAudioPlayer.Current;
audio.Load(stream );
audio.Play();

Stream GetStreamFromFile(string filename)
{
   var assembly = typeof(App).GetTypeInfo().Assembly;

   var stream = assembly.GetManifestResourceStream("yourprojectname." + filename);

   return stream;
}

更新

我检查了您的演示，以及是否要在项目中播放mp3文件.您需要将mp3的构建操作设置为嵌入式资源

右键单击mp3文件->属性

Right click the mp3 file -> Property

这篇关于如何以Xamarin形式播放音频?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！