MediaPlayer 仅在调试模式下播放音乐文件 (Android) [英] MediaPlayer plays the music files only in debug mode ( Android )

问题描述

我编写了一个 Android 应用程序(在 eclipse 中)，它播放音乐文件如下:

I have written an Android application ( in eclipse) that plays a music file as follows:

MediaPlayer mediaPlayer = new MediaPlayer();
        try
        {

            mediaPlayer.setDataSource(fileName);
            mediaPlayer.prepare();
            mediaPlayer.start();
        //  mediaPlayer.stop();

        }
        catch (Exception e)
        {
            Log.d("Exception---", e.getMessage());
        }

当我运行它时，它不播放文件(并且不显示任何异常)，但是当我切换到调试模式"并逐行跟踪它时，它会播放文件.我真的很困惑.你能帮我找出问题所在吗?

When I run it, it does not play the file ( and does not show any exception ), but when I switch to 'debug mode', and trace it line by line, it plays the file. I'm really confused. Would you please help me find out what's wrong?

谢谢.

推荐答案

在mediaPlayer.setDataSource(fileName)"之前放置一个日志，并检查您是否在发布模式下获得了有效的文件名.

Put a log before "mediaPlayer.setDataSource(fileName)" and check if you are getting a valid fileName in release mode.

这篇关于MediaPlayer 仅在调试模式下播放音乐文件 (Android)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！