if init not call before getInstance functions, null pointer exception happend

persiancal / android-sdk

Android SDK for Persian calendar events

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if init not call before getInstance functions, null pointer exception happend #24

Open bkhezry opened 4 years ago

bkhezry commented 4 years ago

before the return instance of each LocalCalendarEvents or RemoteCalendarEvents classes, we should check to sure instance is not null or return custom exception message for help developer found the problem.