Read Write Image Blob

Read Write Image Blob

BY 11 Dec 2023 Web Application Development

Using Tizen 4.0 NOT 5.0
I want to be able to write image blob to directory and then retrieving the saved image to be displayed,
this is what i have so far it is not working:

for reading:

tizen.filesystem.resolve(IMAGE_DIRECTORY_PATH + “/” + slide.MediaFileName, function (dir) {
                    dir.openStream(“r”, function (fs) {
                        var mediaByteArray = fs.readBytes(1000000);
                        let uint8Array = new Uint8Array(mediaByteArray);
                        let mediaBlob = new Blob([uint8Array]);
                        var mediaUrl = URL.createObjectURL(mediaBlob);
                        console.log(mediaUrl);
                    });
                }, errorCallback, “r”
                );

for writing: 

var xhr = new XMLHttpRequest();
    xhr.open(“GET”, slide.MediaFileFullName, true);
    xhr.setRequestHeader(“Content-Type”, “application/json”);
    xhr.responseType = “blob”;
    xhr.onload = function () {
        if (xhr.readyState === 4 && xhr.status === 200) {
            var imageBlob = xhr.response;
 
tizen.filesystem.resolve(
                IMAGE_DIRECTORY_PATH,
                function (dir) {
                    imagesDir = dir;
                    dir.listFiles(function (images) {
                        for (var i = 0; i < images.length; i++) { console.log(“File name is “ + images[i].name); }
       
                        var imageFile = imagesDir.createFile(slide.MediaFileName);
                        imageFile.openStream(
                            “w”,
                            function (fs) {
                                fs.write(imageBlob, “UTF-8”);
                                fs.close();
                            },
                            function (e) {
                                console.log(“Error Writing Image: “ + e.message);
                            },
                            “UTF-8”
                        );
                    }, onerror);
                },
                function (e) { console.log(“Error: “ + e.message); },
                “w”
            );
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