Image doesn't change when I shake my phone - app-inventor

Image must change to another image when I shake my phone. Application doesn't work correctly. During shaking image just dissapear. Why?

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Hero image is not responsive on mobile devices. https://kenlax.com

Hero image is not responsive on mobile devices.
https://kenlax.comn
I can Crop the image so it appears on left side and adequately shows up on mobile screens but this is Not what I'm looking for. On laptop and desktop screens I want the entire Hero image effect to render as intended.
11/16

clickable images on mobile

On a desktop, if I make an image a link, I can make the mouse change to a pointer to indicate that the image is clickable. How do people normally indicate a clickable image on mobile since there is no mouse?

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How to limiting the image zooming, dragging with the screen?

I have made an application which displays Images and i have implemented pinch zooing, translating using Silverlight for Windows Phone Toolkit, GestureService it works perfect. but when am zooming the image or dragging the image it is not the image border/ boundaries. :(
how can i limit the image with in the screen. i want same look and feel like native windows phone photo viewer or web browser ( we can drag contetnt with in the limites only in web browser)
thanks in advance
I have posted the code on my blog.. have a look here
http://invokeit.wordpress.com/2013/01/17/photoviewer-with-pinch-zoom-pan-and-flick-support/
I use the same for my app's photo viewer

Application Icon transparency issue (Windows Phone 7)

I'm writing a Windows Phone 7 app and have a icon (both tile icon and app icon). The icon has my little logo in the middle surrounded by a transparent background. But when I see the icons on the phone emulator the background is black. It stays black regardless of what theme is chosen (light or dark).
I would expect that the transparent background would've been filled in with the users chosen Accent Color like all the other icons on the phone (ie, settings etc) but this is not the case.
Do I have to do anything special to have a transparent background? Thanks!
My understanding is it was supposed to have been changed to work the way you expect, but for the moment it's only working for 1st party apps. My understanding is this is a bug. A timeframe hasn't been offered for resolution to my knowledge.

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