转载：MediaPlayer cant play audio files from program data folder?

由于权限的问题，安卓里的MediaPlayer是无法播放其它应用程序私有的数据目录里的媒体文件的。绕过的办法是，由该应用程序自己打开该媒体文件，然后向 MediaPlayer的setDataSource函数中传递该文件的描述符。

亮点：

6 down vote

i had the same issues... whenever i used setDataSource with filepaths, it would not work; kept getting IOException.

changing my code to use setDataSource(FileDescriptor) does work... and with this i don't have to copy the files to SDCard or anything like that.

So, with a simple File object, create a new FileInputStream and pass the actual file descriptor as data source as in:

setDataSource((new FileInputStream(myFileInstance)).getFD());

creating an input stream pulls the file data into memory and thereby addresses /data/data access violations.

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