My thoughts exactly!

i love you🥺 hahahaha i was losing my head for over 10 minutes and then i found this, thank you💪💪

Still can't figure this out.... :(

my app keep crashing ... still cant figure it out

Very happy to hear it helped!

Glad you could make it work!

@Magic Wind your comment just saved me. THANKS!!

And thank you Code Palace!!

Thanks man!!

@Magic Wind please can you explain to me how you solved this problem ?

will still work as I have done it with bottom navigation already

Put into Google: Caused by: java.lang.NullPointerException: findViewById(R.id.viewPager) must not be null

just add the plugin in your app gradle: id 'kotlin-android-extensions'

@@mergenc2522 omg, yes, this was actually the solution I was looking for for an hour now! Thank you very much!

empty activity

We live and learn, good job on spotting it

it also does not reference 'tabs', have I failed to link them?

Hello Edward, unfortunately things get deprecated very fast in the world of Android. So what you're dealing with is that they deprecated what used to be known as "Kotlin synthetics", you need to explicity reference your views in your projects now.

@@Indently Hey, I think i solved the linking problem with binding, but now when i run the app in the emulator it doesn't display the tabs i made, just two default tabs. Any ideas? cheers Ed

@Edward were you able to resolve the issue? I am having the same linking problem.

@@prashantsah5901 I basically stopped using tabs and used a different base layout instead because it was more intuitive

I can't answer that unfortunately since it's too personal, I recommend searching on Google.

No, can work in constraint as I have mine working, just make sure your constraint the item to top, bottom etc

same , did u find a solution ,?

@@erzafixed5372 I have managed to get this to work so I thought I should mention how I did this. Firstly really great video. This is solution for viewPager error around 10 mins into video. Similar to adding implementation you need to add the following in same build.gradle, this is all for kotlin , viewBinding { enabled = true } then make sure you sync, then in Mainactivity.kt private lateinit var binding: ActivityMainBinding override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) setUpTabs() } private fun setUpTabs(){ val adapter = ViewPagerAdapter(supportFragmentManager) adapter.addFragment(HomeFragment(), "Home") adapter.addFragment(FavouritesFragment(), "Favourites") adapter.addFragment(SettingsFragment(), "Settings") binding.viewPager?.adapter = adapter binding.tabs?.setupWithViewPager(binding.viewPager)

I know what happened, you are using viewpage2 instead of viewpage

did you change the color of the title?

i have the same issues, could someone help?

@@Spezialagent3000 add - id 'kotlin-android-extensions' - to you gradle plugins

idk ask google

letmegooglethat.com/?q=how+to+add+a+recycler+view+to+a+fragment

Hello, did you manage to do this? im having trouble too. getting " java.lang.IllegalStateException: findViewById(R.id.recycler_capture)" on the activitys of the fragments, i did a include on the fragments, thats where "recycler_capture" is located but im gettings this error

I completely agree. I haven't tried out Compose yet, but I heard that it's intuitive as Web Dev

@@Indently also btw, thank you. Your video was really helpful.

The main reason is that Google chose Kotlin over Java, and that it's 10x faster to write the same code in Kotlin rather than in Java. I recommend you check it out since it's essentially the same language.

@@Indently Thanks for the reply. I always thought the main reason why they created Kotlin in first place was to be able to control Java. As a subset, one is able to make as many improvements to the syntax, and other aspects of the subset as necessary, like making coding faster, without being sued, like Microsoft was sued by Sun. As for being faster in performance, one would argue if any subset of Java can be faster than the actual Language it is going to be traslated to by the bytecode interpreter of the JVM. Java buildtime has at least one less hop and initial compilation is always faster. Maybe in the overall productive time of an Android developer it is worth it. Now, try going to the heavy duty world of Banking, and anything related to Finance, where Java code has been migrating COBOL/CICS platform and imprint that Kotlin is the future. Not even all developers from India would have the momentum to do that. So, for fun stuff, like Android, maybe it is a trend, for those newjoiners of programming (sorry, I meant coding, but I could not help it) who are starting now and never learned Java before, or for newjoiners of a project that is made in Kotlin because the architect is young. It is a natural tendency to try to simplify writing a piece of code. That is when Java came along in first place. C++ was just a bit too unecessarily low level for home appliances, and later for Finance. But then a Language takes a compiler, in the case of Java a JVM which is a compiler and an interpreter in a virtual machine, making the application much more secure. Kotlin is just a subset, for starters. Go came along and thumbs up to Google for that , when Blockchain, search engines and other complex application demands emerged in the internet era. Again a low level Language was necessary, with new features, multi-threading (concurrent) like Java, but with C++ low level capabilities, and an improved sintax. Google called the creators of Unix to create Go. That was something. IMHO Kotlin is just sugar for those seeking less thinking, more speed. Soon enough Kotlin will be history, because every high level code wll be generated using AI, Machine learning, Deep Learning ( low level programming) There is also Python, but that is another story. That is when Android development will be automated, like JS, and other superficial UI stuff. Like Groove, Scala, and other ones not really worh mentioning here, Kotlin is a just moment. it is amusing to see the keyword fun, though. It makes it much more fun, doesn't it? [...]s.

I can't speak for any other kind of development, but for Android, Google chose to support it 100%. Does that make me a sheep to follow what Google promotes? Yes. But again, for android development, especially if you use android studio, I personally believe you'd be complicating your life for no reason if you continued using Java . And even if it is a movement, or if it decides to no longer be supported tomorrow, it was still worth learning while it existed (Kotlin should take you no longer than a couple of hours to learn if you are familiar with Java). The fact is, it made a lot of the code more readable and easier to code in android studio. I personally don't care if people decided to use Kotlin or not, that's their choice. I'm just using what Google and the Intelij team offered and recommended for creating apps. I can't provide you any further arguments, because I'm just sharing what I learned from my own experience. But I'm sure the Intelij team and Google Inc. have some documentation to further support their decision! But I'm also concentrating on Python, because I'm certain at a certain point that a lot of these programming languages will become most certainly redundant with machine learning (including even Python lol). But thanks for the comment! Whatever decision you take for development, I'm sure you'll make it work.

@@Indently Yo uso kotlin y es mejor que java.

Same

@@eiorajlf same

@@suppp24 I have managed to get this to work so I thought I should mention how I did this. Firstly really great video. This is solution for viewPager error around 10 mins into video. Similar to adding implementation you need to add the following in same build.gradle, this is all for kotlin , viewBinding { enabled = true } then make sure you sync, then in Mainactivity.kt private lateinit var binding: ActivityMainBinding override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) setUpTabs() } private fun setUpTabs(){ val adapter = ViewPagerAdapter(supportFragmentManager) adapter.addFragment(HomeFragment(), "Home") adapter.addFragment(FavouritesFragment(), "Favourites") adapter.addFragment(SettingsFragment(), "Settings") binding.viewPager?.adapter = adapter binding.tabs?.setupWithViewPager(binding.viewPager)

did you fix it?

@@imaginefree9143 no

You need to try using findviewbyid or viewbinding , they deprecated Kotlin synthetics

@@Indently Thank you fot the fast response :) I'll try it tomorrow

@@Indently Interesting approach but didnt work 4 me.. i dont know what to do.. ty for your time tho.. ^.^

Code Palace apologises for the inconveniences this video may have caused. Code Palace also recommends that the person watching this video learns the basics of Android before trying more complex tutorials such as this one. Code Palace wishes the user a pleasant journey and a pleasant day.