[CB-7927] [WP8][cordova-plugin-file] Unable to write a binary file.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.5.0
• Component/s: cordova-plugin-file
• Labels: plugin-file wp8

Environment

Windows Phone

• Assignee: Jesse MacFadyen
• Reporter: Kamil Durkiewicz
• Created: 03/Nov/14 13:05
• Updated: 23/Aug/18 07:18
• Resolved: 04/Feb/15 18:15

Description

When this code is run on Windows Phone:

// a valid base64-encoded image:
        var imgData = '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',
            path = 'testImage.jpeg';

        var byteArray = base64DecToArr(imgData).buffer;

        window.requestFileSystem(
            LocalFileSystem.PERSISTENT,
            0,
            function(fileSystem) {
                fileSystem.root.getFile(path, { create: true }, function(fileEntry) {
                    fileEntry.createWriter(function(writer) {
                        writer.write(byteArray);
                        writer.onwriteend = function(evt) {
                            alert('write end');
                        };
                    })
                });
            });

where base64DecToArr is a function taken from here: https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding
The file that is written is not a valid jpeg file. This issue is caused by deserialization of bytes into `char[]` instead of `byte[]`.