App Inventor - I need help

Unfortunately, AI does not natively support sliders, but a slider can be coded fairly easily using buttons (but the slider button cannot be dragged, you must click on the track itself). The size of the spacer button (which is emulating the track that the slider button rides on) determines the volume. Or, you can place an image sprite on a small canvas and allow the user to drag it. The position of the sprite on the canvas determines the volume.

The formula to change between user slider values and the app's native values are:​

user value = app value / (app max value - app min value) x (user max value - user min value)​

app value = user value / (user max value - user min value) x (app max value - app min value)​

Color Picker: https://groups.google.com/forum/#!topic/app-inventor-shared-utilities-repository/l5o8nDOI1u4

Android Style Sliders: https://groups.google.com/forum/#!topic/app-inventor-shared-utilities-repository/AFCb5RmTeWs

Scott Ferguson
scottfromscott@gmail.com