Although I had marked 'lateinit',it's still not initialized. It's one ghost bug,last night everything is OK,but today it's can't work,it's so tiredenter image description here
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please provide an example of your code. it is nigh impossible to help without your code snippet. – Rann Lifshitz Apr 14 '18 at 07:48
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there has one img's url,I don't know how to display it – colinstark Apr 14 '18 at 09:44
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It is not initialized because you marked it lateinit and never actually initialized it.
You still need some method which will do userMapper = ..., and you must call this method before you can call userCheck.
But it would be better to remove lateinit and initialize in the constructor.
Alexey Romanov
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