iOS Question Image Zoom (Pinch)

[Giuliano Cucchiarini]

Hi
How can I Zoom an ImageView using the pinch gesture?
I did this in B4a using the TouchImageView library, but there is no similar library in B4i.
Do you have an alternative or another way?

Thank You

Giuliano C.

 

[Erel]

I think that for now the simplest option will be to use WebView for that.

 

[inakigarm]

Seems that it's possible implementing pinch zoom with an image view inside scrollview , but don't know if this is accesible from B4i directly or via nativeobject. https://developer.apple.com/library...IScrollView_pg/Introduction/Introduction.html

Another option as Erel said should be webview (there're some js clases here, like hammer.js) http://www.queness.com/post/11755/11-multi-touch-and-touch-events-javascript-libraries

 

[narek adonts]

Is it possible to load directly as Bitmap to WebView (without saving the file and loading with url) ??
It will help a lot to use the pinch to zoom feature.

Narek

 

[Erel]

Saving the image to a temporary file shouldn't be problematic. As an alternative for small images, you can convert the image to base 64 string and then embed it in a html string: http://stackoverflow.com/questions/1207190/embedding-base64-images

 

[fishwolf]

if i load a big image, i see a part of image,

i can zoom+, but not zoom-

is it possible reduce the image to size of webview, for see all image.

 

[narek adonts]

Try this

https://www.b4x.com/android/forum/threads/zoomable-imageview.55185/