Why file exists statement not true in android?

Question

I am Working email attachment .I am facing one problem while attachment .Problem Is that i want to sent a mail with attachment .I have one file on this path sdcard0 then fgg then hh.html.When I debug on this File file = new File(attachments.getString(i)); it show file:/storage/sdcard0/fgg/hh.html But After this it not go to if condition why ?

File file = new File(attachments.getString(i));
                        if (file.exists()) {
                            Uri uri = Uri.fromFile(file);
                            uris.add(uri);
                        }

Here is my hole code

JSONArray attachments = parameters.getJSONArray("attachments");
        if (attachments != null && attachments.length() > 0) {
            ArrayList<Uri> uris = new ArrayList<Uri>();
            //convert from paths to Android friendly Parcelable Uri's
            for (int i=0; i<attachments.length(); i++) {
                try {
                    File file = new File(attachments.getString(i));
                    if (file.exists()) {
                        Uri uri = Uri.fromFile(file);
                        uris.add(uri);
                    }
                } catch (Exception e) {
                    LOG.e("EmailComposer", "Error adding an attachment: " + e.toString());
                }
            }
            if (uris.size() > 0) {
                emailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
            }
        }
    } catch (Exception e) {
        LOG.e("EmailComposer", "Error handling attachments param: " + e.toString());
    }

What kind of data is there in the attachements array of your JSON? file:/storage/sdcard0/fgg/file.html or things more like /storage/sdcard0/fgg/hh.html? — ol_v_er, Jul 31 '13 at 08:32

score 1 · Answer 1 · edited May 23 '17 at 12:20

1

Uri to file will need triple slashes :

file:///storage/sdcard0/fgg/hh.html

As you can see here. But i twill probably not work, so try to remove the "file:" part of your string :

File file = new File(attachments.getString(i).replace("file:","");

edited May 23 '17 at 12:20

Community

1
1

answered Jul 31 '13 at 07:57

NitroG42

5,336
2
28
32

ol_v_er · Answer 2 · 2013-07-31T08:36:35.687

in a URI, you have different parts.

First the scheme:

http://
file://
ftp://

Then the path you want to access:

myfile.txt
videos/myvideo.avi
/storage/sdcard0/fgg/hh.html

So your complete URI should be:

file:///storage/sdcard0/fgg/hh.html

More information here:

http://developer.android.com/reference/java/net/URI.html

You can then build your File and check if it exist with this snippet

Uri.Builder builder = new Uri.Builder();
builder.scheme("file");
builder.path(myFilePath);
Uri uri = builder.build();
File file = new File(uri.getPath());
if (file.exists()) {
    uris.add(uri);
    // do whatever you want
}

EDIT:

If your JSON send you complete URI path, use this code instead:

Uri uri = Uri.parse(attachments.getString(i));
File file = new File(uri.getPath());
if (file.exists()) {
    uris.add(uri);
    // do whatever you want
}

josephus · Answer 3 · 2013-07-31T09:06:05.863

0

Try two forward slashes after :

file://storage/sdcard0/fgg/hh.html

edit:

should be 3 forward slashes

edited Jul 31 '13 at 09:06

answered Jul 31 '13 at 07:51

josephus

8,284
1
37
57

Ah yes, should be 3 forward slashes. – josephus Jul 31 '13 at 09:05

Why file exists statement not true in android?

3 Answers3