Android - Using Filechannel to copy file at sd card isn't possible?

Question

I made this method to copy file from inputpath to outputpath. It works when input is located in sdcard, and output is located in local storage, But when I change output to a file located in sdcard, it doesn't work and doesn't show any error. How can I fix this???

I checked output with file.canwrite() and it returned false.. Why??

public void copyFile(String inputPath, String outputPath) {
FileInputStream fis = null;
FileOutputStream fos = null;
FileChannel in = null;
FileChannel out = null;
try{
    fis = new FileInputStream(inputPath);
    fos = new FileOutputStream(outputPath);
    in = fis.getChannel();
    out = fos.getChannel();
    in.transferTo(0, in.size(), out);
} catch(Exception e){
    e.printStackTrace();
}
finally {
    try{
        if(out != null) out.close();
        if(in != null) in.close();
        if(fis != null) fis.close();
        if(fos != null) fos.close();
    }
    catch (Exception e) {
        e.printStackTrace();
    }
}

}

score 0 · Answer 1 · answered Jan 27 '19 at 18:33

0

Try to add fos.flush() after re row "in.transferTo(0, in.size(), out);"

answered Jan 27 '19 at 18:33

MihaiBC

472
5
15

@YooMinjun did you find a solution? If yes, what was the problem? – MihaiBC Feb 04 '19 at 12:35
1

It wasn't possible to write on sdcard directly. So I used DocumentFile. @MihaiBC – Yoo Minjun Feb 04 '19 at 17:37
@YooMinjun Write it as an answer and mark this solved please. – dknchris Aug 17 '21 at 21:39

Android - Using Filechannel to copy file at sd card isn't possible?

1 Answers1