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Editorial Team
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Asked: 2026-05-27T16:26:50+00:00

I wrote application that contain 2 activities. In the first one – i need

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I wrote application that contain 2 activities.
In the first one – i need to give the user the option to choose image from the gallery and i send this image to some server.
The Server return some result – and if the result is OK i need to show the second activity.

The problem that i have ..

  1. when sending the image – i see that the screen is become black …
    I want to avoid this and show some nice GUI of ‘please wait’ – how can i do it ?

  2. i want to make this sending image to the server to be from other thread – how can i do it from android ? how to define new thread with callback that will be called when the thread is done ?

Thanks for any help.

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1 Answer

  1. Editorial Team

    For question number 1:

    You should use a ProgressDialog or a ProgressBar in order to show to the user that an operation is being executed. For more information you can check here: http://developer.android.com/reference/android/app/ProgressDialog.html

    For question number 2:
    A good solution would be to use AsyncTask for this operation which gives you a set of callback functions to control the operation. For more information you can check here: http://developer.android.com/reference/android/os/AsyncTask.html

    Hope this helps for now!

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