Serialization and Deserialization

10 Oct 2018 / 2 minutes to read

The image editor control provides support to serialize and deserialize the shapes (circle, arrow, and rectangle), free hand drawing, text and toolbar settings. You can save the current state of the image editor and load it back when it is needed.

Serialization

The SaveEdits() method is used to serialize the current edits of shapes. The serialized object will be returned in the form of JSON stream.

public override void ViewDidLoad()
        {
            editor = new SfImageEditor();
            UIButton saveEdits = new UIButton();
            saveEdits.Frame = new CoreGraphics.CGRect(0, 10, View.Frame.Width, 100);
            saveEdits.SetTitle("Serialize", UIControlState.Normal);
            saveEdits.SetTitleColor(UIColor.Black, UIControlState.Normal);
            saveEdits.TouchUpInside += SaveEdits_TouchUpInside;
            editor.Frame = new CoreGraphics.CGRect(0, 110, View.Frame.Width, View.Frame.Height - 100);
            this.Add(editor);
            this.Add(saveEdits);
            base.ViewDidLoad();
        }

        private void SaveEdits_TouchUpInside(object sender, EventArgs e)
        {
            Stream stream = editor.SaveEdits();
        }

you can save stream into .txt format file. if you saved as .txt format file to deserialize the shapes then set as BundleResource in project.

Sample text file: Chart.txt

Deserialization

LoadEdits() method used to deserialize the shapes.

Stream stream = this.GetType().GetTypeInfo().Assembly.GetManifestResourceStream("namespace_name.Resources.Chart.txt");
            if (stream != null)
                editor.LoadEdits(stream);
            this.Add(editor);

SfImageEditor