The button is always enabled at startup regardless of the state of Enabled property.
In the attached test app. the second button is disabled in the Designer, but you still can click it when the app is started. The first button switch the enabled state of the second button between True and False.
Workaround: Disable it in Activity_Resume.
In the attached test app. the second button is disabled in the Designer, but you still can click it when the app is started. The first button switch the enabled state of the second button between True and False.
Workaround: Disable it in Activity_Resume.