Translucent png become black opaque or even brown opaque in app?
Here, I have a png for customing the appearance of my table or something,

and after our designer, who draws these pictures, completed a png, and part of it is translucent which is designed for a shadow effect, and she says that she just change the alpha value of that part to make it translucent.

And the results is, when I put this png into the app, all the places of the png that are supposed to be translucent and leave a shadow, turn out to become totally opaque, black or brown, some strange dark color.

Hoping anyone could help me to solve this!

Thanks a lot!
Translucent png become black opaque or even brown opaque in app?
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Here, I have a png for customing the appearance of my table or something,

and after our designer, who draws these pictures, completed a png, and part of it is translucent which is designed for a shadow effect, and she says that she just change the alpha value of that part to make it translucent.

And the results is, when I put this png into the app, all the places of the png that are supposed to be translucent and leave a shadow, turn out to become totally opaque, black or brown, some strange dark color.

Hoping anyone could help me to solve this!

Thanks a lot!