本文介绍了Android MediaPlayer给出了空异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有人可以帮我解决这个奇怪的问题吗,我想播放SDCard的音频文件,这是代码,我知道这是正确的文件路径,但是MediaPlayer给了我一个空异常.任何帮助将不胜感激!
Can someone help me with this strange issue, I want to play an audio file from SDCard , this is the code,I know that this is the right file path, but MediaPlayer gives me a null exception. Any help will be appreciated!
File file = new File(android.os.Environment.getExternalStorageDirectory()+"/rockstar.mp3");
MediaPlayer m = MediaPlayer.create(getApplicationContext(), Uri.fromFile(file));
m.start();
这是stacktarce
This is stacktarce
java.lang.NullPointerException
java.lang.NullPointerException
推荐答案
您是否不缺少.getAbsolutePath()
?
File file = new File(android.os.Environment.getExternalStorageDirectory().getAbsolutePath()+"/rockstar.mp3");
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