java - Android Empty Activity and Blank Activity -

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i trying make android project , there many types of activities, there see blank activity , empty activity.

does know difference between two?

blank activity not creating main_activity.xml created empty activity.

in empty activity, unable add edittext field, know why not able add it? error says :

exception raised during rendering: java.lang.system.arraycopy([ci[cii)v exception details logged in window > show view > error log

and when open error log, there no error

check api level you're using rendering view. in case api 20 (for android wear). changed api 19 , error gone.

enter image description here


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