Android读取asset目录的文件转File

writeBytesToFile(getActivity().getAssets().open("xxx文件名"),file);

public static void writeBytesToFile(InputStream is, File file) throws IOException{
FileOutputStream fos = null;
try {
byte[] data = new byte[2048];
int nbread = 0;
fos = new FileOutputStream(file);
while((nbread=is.read(data))>-1){
fos.write(data,0,nbread);
}
}
catch (Exception ex) {
logger.error("Exception",ex);
}
finally{
if (fos!=null){
fos.close();
}
}
}