Getting a file mime type using PhoneGap/JavaScript

Question

Using PhoneGap is it possible to get the mime type of a file in the local file system?

Part of my app downloads a file from a remote URL on our server and saves it to the Android downloads folder. I then use the WebIntent plugin to open the file but one of the options this requires is a mime type.

I've not been able to find anything in API Documentation or Google other than here, but that is more relevant to forms.

Has anyone tried to do this before?

Simon MacDonald · Accepted Answer · 2012-11-20 15:17:32Z

3

Something like this would work on Android but YMMV on other platforms:

var medFile = new MediaFile("empty.txt", "file:///mnt/sdcard/empty.txt");
console.log("file path = " + medFile.fullPath);
medFile.getFormatData(function(metadata) {
    console.log("mimeType = " + metadata.type);
}, function() {
    console.log("fail");
});

metadata.type would be your mime type.

edited Nov 20, 2012 at 15:17

answered Nov 14, 2012 at 16:53

Simon MacDonald

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Comments

Alex from Jitbit · Accepted Answer · 2014-09-11 12:48:35Z

1

    function getType(file_URI) {
        window.resolveLocalFileSystemURI(file_URI, function(fileEntry) {
            fileEntry.file(function(filee) {
                alert(filee.type); //THIS IS MIME TYPE
            }, function() {
                alert('error getting MIME type');
            });

        }, onError);
    }

answered Sep 11, 2014 at 12:48

Alex from Jitbit

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2 Comments

Saravanan Over a year ago

resolveLocalFileSystemURL doesnot for content URI like this content://com.android.providers.media.documents/document/image%3A2119 . If you have any work around to find out the mime type of file using above url please suggest me.

Ionut Necula Over a year ago

Subscribing to above comment, on iOS the filee.type exists but is null

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