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Editorial Team
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Asked: 2026-05-28T06:13:49+00:00

I have been trying to update a TextView field, when i Tap on the

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I have been trying to update a TextView field, when i Tap on the screen. I have implemented the Overlay class successfully, but I am unable to get a reference to the TextView field from the overlay class. I have passed ‘context’ from my activity class to overlay class.
What are the ways to get reference to the Textview in the overlay class ?

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  1. Editorial Team

    You have some options:

    • You can pass the TextView itself to the overlay constructor.
    • If the overlay is defined inside the activity, you can create a setTextViewText method in the activity that does it and call it from the Overlay.
    • You can create a public setTextViewText method in the activity, not a general activity, and pass the activity to the overlay object.

    Keep in mind that you can’t modify an UI element from a non UI thread.

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