unable to set image in paint view in titanium?

Question

unable to set image in paint view in titanium?

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Hi, i have created drawing using paint and i saved it as a image and insert it in database and then placed as a image in paint image but it gives folloawing error when i set image in a paintview

CGContextSaveGState: invalid context 0x0

I have used following code to setimage in paintview

var paintView = Titanium.Painter.createPaintView({ top: 0, left: 0, right: 0,
bottom: 0, strokeColor: '#0f0', //strokeColor: '#ffffff', strokeAlpha: 255, strokeWidth: 10, });

paintView.addEventListener('touchend',function(e) {

          var paintimage = paintView.toImage();
          imagedb.addtempImage(paintimage);


    });

exports.addtempImage = function(imageitem) {
  var  db = Ti.Database.open('db');
  db.execute('INSERT INTO Tempdrawingimage (tempimage) values (?)', imageitem);
  var dbrows =db.execute('SELECT tempimage FROM Tempdrawingimage');
   Ti.API.info( dbrows.getRowCount());
   dbrows.close();
  db.close();
};

sliderbar.addEventListener('swipe',function(e) {
var tempimg = imagedb.gettempImage(Ti.App.myglobaltempimage); paintView.clear(); paintView.image = tempimg; }

});

2 Answers

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Accepted Answer

Accepted Answer

I think the best solution is to actually save the image to the filesystem. Here are a couple of functions I've created that do just that:

var getPaintImage = function(){
    var filename = "savedPainting.jpg";
    var file = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,filename);
    if(!file.exists()){
        return 'File not found.';
    } else {
        return Titanium.Filesystem.applicationDataDirectory+filename;
    }
},
 
var savePaintImage = function(imageBlob){
    var filename = "savedPainting.jpg";
    var file = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,filename);
    file.write(cover);
}

So, then, you would do the following to save the image:

var savedPainting = paintView.toImage();
savePaintImage(savedPainting);

You could, of course, add a parameter to the save and retrieve functions allowing you to use a custom filename as well.

Hope that helps!

Answer 2

you cannot save that image to the database... unless you convert it to a string representation