android - java.io.FileNotFoundException : can't create a file because of some error in filename , 仅在某些设备中面临此错误 ex :android 4. 1.2

Question

File external = getExternalFilesDir(null);

//fd is stringbuffer whose value is "year1:semester:2"

File file = new File(external,""+fd.toString()+".txt"); // <----error

FileOutputStream fos = new FileOutputStream(file);
fos.write(store.getBytes());
fos.close();

这是生成的异常:

W/System.err(29169): java.io.FileNotFoundException: /storage/sdcard0/Android/data/com.example.ddu/files/Year:1Semester:2.txt: open failed: EINVAL (Invalid argument)

Answer 1

您不能创建名称中包含冒号 (:) 的文件。用其他东西替换冒号。