iOS Question Image from Control?

[Nicolás Cieri]

Hi, is possible to get and image from Control.. for example for all the content on a B4XView? Like a screenshoot of the control?.

Thanks..

 

[Semen Matusovskiy]

Probably there is better solution, but you can try following function (returns Bitmap):

#If OBJC
- (UIImage *) getViewScreenShot : (UIView *) view
    {   
    UIGraphicsBeginImageContextWithOptions (view.frame.size, NO, 0.0);
    [view.layer renderInContext: UIGraphicsGetCurrentContext ()];
    UIImage * image = UIGraphicsGetImageFromCurrentImageContext ();
    UIGraphicsEndImageContext ();
    return image;
    }
#End If

If you want opaque image, use YES instead of NO.

Examples:

    Dim noMe As NativeObject = Me
    ImageView1.Bitmap = noMe.RunMethod ("getViewScreenShot:", Array (Button1))
    ImageView2.Bitmap = noMe.RunMethod ("getViewScreenShot:", Array (B4XFloatTextField1.mBase))

 

[Erel]

Dim bmp As B4XBitmap = B4XView.Snapshot

 

[Nicolás Cieri]

Thanks Erel

 

[Nicolás Cieri]

Hi, this Snapshot is not working... any idea? Thanks

    Dim b As B4XView = pnlRo   
    Dim avc As ActivityViewController
    avc.Initialize("avc", Array("Shared with you.", b.Snapshot))
    Dim mp As Page = B4XPages.GetNativeParent(Me)
    avc.Show(mp, pnl) 'Second parameter is relevant for iPad only. The arrow will point to the view.

 

[Nicolás Cieri]

I tried also..

    Dim bmp As Bitmap = b.Snapshot.Crop(0,0,pnl.Width,pnl.Height)

But is not working

 

[Erel]

Make a test, add an ImageView and set b.Snapshot to the ImageView. Does it work? If not, please upload the project.

 

[Nicolás Cieri]

Ok, the "Snapshot" method works, what does not work is being able to attach text and image via WhatsApp.

Should I start another question for that?

 

[Erel]

Yes.