Exception [login to view URL]: Attempt to invoke virtual method 'double [login to view URL]()' on a null object reference
[login to view URL] ([login to view URL])
That's a crash report you need to fix the crash.
and press button to run the app(add this features)
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Hi, could you send me the existing source code to check it first? and could you explain the last sentence "and press button to run the app(add this features)"? I'm using android studio with java.
Hi, I'm Ashraf, an expert android developer, please check my profile for references. Once you send me the code I'll start working on getting the problem fixed. Regards.