I'm looking for a list of movies in an API, the project is in MVVM and the search is being done perfectly. However, when opening the app, the user has to exit and open it again for the list to display the results. How to solve this?
In onStart I use Observe
override fun onStart() {
super.onStart()
Log.d("TESTE", "onStart")
viewModel.movieList.observe(this, Observer {
Log.d("TAG", "onCreate: $it")
for (i in it.results){
list.add(i)
}
if (page < 66){
page
}
})
In onResume
override fun onResume() {
super.onResume()
val scope = MainScope()
adapter.setDataSet(list)
scope.launch {
viewModel.getAllMovies(page)
viewModel.getAllGenre()
}
val recyclerView : RecyclerView = findViewById(R.id.recycler_vie_movie_list)
val layoutManager = GridLayoutManager(applicationContext, 3, GridLayoutManager.VERTICAL, false)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
CodePudding user response:
You are using activity callbacks incorrectly. White all of these code in onCreate (if you use Activity or use onViewCreated if it is Fragment).
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
viewModel.getMovieList() // realize this method in your ViewModel
// and don't forget to set data to your movieList LiveData
val recyclerView : RecyclerView = findViewById(R.id.recycler_vie_movie_list)
val layoutManager = GridLayoutManager(applicationContext, 3, GridLayoutManager.VERTICAL, false)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
viewModel.movieList.observe(this, Observer { list->
adapter.setDataSet(list)
})
Inside the method setDataSet call notifyDataSetChanged()
Good luck in your endeavors!