Open button's image on Android when button is visible -

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i have large canvas placed multiple buttons. each button has image opened based on button click event. want change such way when button enters screen area, automatically open button image.

i guess need find current button view (that visible on screen) , use functions simulate button click event (view.performclick();). not entirely sure, suggestion highly appreciated.

enter image description here

can try take both view button view , image @ same position, when click on button view view hide , show image.


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