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Thread: Screen item not appearing when routine called

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    Default Screen item not appearing when routine called

    Hi I am a newcomer to this forum and am using java in Eclipse for Android programming. I have a method :-
    private void turnOnRedLight(){

    // Code to turn light on.....
    }
    When I call this from inside another 2nd method the light does not immediately become visble and only appears when the 2nd method exits. Is there any way to make the object visible immediately ??


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    Default Re: Screen item not appearing when routine called

    Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for new members.

    Thread moved.

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    Default Re: Screen item not appearing when routine called

    appears when the 2nd method exits
    That sounds like a threading problem. The method is using the thread the jvm uses for updating the GUI so it can't do the update until the method exits.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Screen item not appearing when routine called

    Hi norm - Many thanks for reply. I am fairly new to all this so I am afraid threading doe not mean much to me just yet. Does what you say mean that the problem is ocurring only whist running on a Virtual Machine.? If so would the APP run OK when it is installed on a real Android Tablet?

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    Default Re: Screen item not appearing when routine called

    By jvm I meant the Android OS that executes the app.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Screen item not appearing when routine called

    I am sorry Norm but that doe not mean much to me. It does not suggest anything that might help me to solve the problem. I think that I will have to try installing the App on my Android Tablet and see if it does the same thing there.

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