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kotlinlang

(draft)
`Day51`
• Read articles related to layout inspector
    ◦ android official document <https://developer.android.com/studio/debug/layout-inspector#layout-validation|Debug Your layout with Layout Inspector and Layout Validation>
    ◦ android official medium <https://medium.com/androiddevelopers/layout-inspector-1f8d446d048|Layout Inspector>
    ◦ Lesson today - let’s update things on time ^^,, 
• Getting grasp of current sprint (Adding a third party payment, Overall update related to store&amp;promotion section)

1. Error log
•  While I was inspecting the current sprint branch (WIP branch of my supervisor), I faced an error
```...databinding/ActivityWalletBindingImpl.java:186: 
error: reference to getCouponCount is ambiguous                    
viewModelCouponCount = viewModel.getCouponCount();
                                               ^
both method getCouponCount() in WalletViewModel and method getCouponCount() in WalletViewModel match```
• Original code was like below.
```val couponCount = MutableLiveData&lt;Int&gt;()
fun getCouponCount() { ...```
• There was only one method getCouponCount() in the view model, but error log kept saying that there were two getCouponCount. Thought this was strange, but I thought that maybe livedata thing auto produces some getter &amp; setter implicitly. So it worked after I changed the method’s name into getCouponNum.
• <https://heenustroy.tistory.com/150> -&gt; seems that my inference was right..

`Day51`
• Read articles related to layout inspector
    ◦ android official document <https://developer.android.com/studio/debug/layout-inspector#layout-validation|Debug Your layout with Layout Inspector and Layout Validation>
    ◦ android official medium <https://medium.com/androiddevelopers/layout-inspector-1f8d446d048|Layout Inspector>
    ◦ Lesson today - let’s update things on time ^^,,
• Getting grasp of current sprint (Adding a third party payment, Overall update related to store&amp;promotion section)
    ◦ Something did not work as I expected. I was subscribing an rx subject and update the UI accordingly. Subscription was working well as I printed the logs, but text did not show up. 
    ◦ It was.. really dumb reason. I just didn’t catchup my supervisor’s custom view attributes. Default text color was white.. so I was just not able to see that;;; As I changed the color, it worked. How dumb… But still it wasn’t just waste of time… I had to review the structure related to that part thoroughly