Blob image problem

Question

I'm too tired with blob in winjs, someone help please ...

Open FolderPicker and select a folder with some image inside.

      Get width, height of image picked and create blob to display it <= My problem is here

            Save height, width and blob string to a local json file.

            Create a div like a bookmark with folder name in default.html

After close app and open it again -> click on bookmark -> load json file -> display image with width height saved.

The image not show after i close app, need to open FolderPicker again and select picture again.

Answer 1

Hi nhattuanbl,

There could be another easier solution instead of create blob to display it, we can save the file in StorageItemMostRecentlyUsedList class and use it once we re-open the app. See this for more information: How to track recently used files and folders, I think its much easier for you to display the image since you can re-use your current code instead of create blob.

However to answer your question, I don't know how you create the blob, but I always use this code to create blob via image stream.

var blob = MSApp.createBlobFromRandomAccessStream("image/bmp", stream);

After you have the blob data, convert it to json should not be any problem.

--James

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Answer 2

Thank for your help, i'm trying...