android - open failed: EROFS (Read-only file system)

》 将只读文件夹下的文件复制出来，然后自己来处理，即将原路径下文件读到相应文件夹下

public static boolean copyFile(String oldPath, String newPath) {
boolean bResult = false;
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()) { // 文件存在时
InputStream inStream = new FileInputStream(oldPath); // 读入原文件
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread; // 字节数 文件大小
// System.out.println(bytesum);
fs.write(buffer, 0, byteread);
}
inStream.close();
fs.close();
bResult = true;
}
} catch (Exception e) {
e.printStackTrace();
}


return bResult;
}