ava.lang.NullPointerException: Attempt to invoke interface method

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java.lang.NullPointerException: Attempt to invoke interface method 'void com.yyxx.nsdk.a.g.init(android.app.Activity, java.util.Map)' on a null object reference

在一个未实例化的对象上调用,其方法会报该错误,经常出现在初始化阶段生成实例失败,后面在该实例上调用其方法会出现该异常
 

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