Can't click on buttons on Android

I found that virtual joystick cause the problem in my case. Look’s like is rendering on top of everything and for that reason the buttons can not be pressed. So I disable the touch interface and I will use one from the marketplace.

You can do a virtual joystick for your self if you want, is just a pure math for clamping the position over all. To move an image you will need to override a widget function like that.

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UPDATE
Or you can use Ultimate Touch Components. For me was fine at the beginning, but after a while on PC simulation was not working the joysticks any more, but on android device I had no problems with this one.
If you want to use it be aware is a project base, not a plugin. So you will need to migrate the UTC files to your project.