Shulou(Shulou.com)06/03 Report--

The question in the Kotlin definition of variables or attributes need to initialize the value, and the definition of variables or attributes are private by default, then there is a way not to assign values at the time of definition, the answer is yes. The definition of attribute or variable is divided into the following two cases: 1, ordinary attribute / variable definition; 2, using annotations to define variable / attribute; for 1 case, the solution is ordinary definition, with the keyword lateinit modified.

For two cases: it may change slightly, if you use kapt to process annotations before using lateiinit to modify:

After decorating with lateinit:

Note: lateinit-decorated variables / attributes cannot be primitive data types

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