We are trying to receive a specific event when it gets close to a radar... but sygic sdk is not sending this event to our callback, any ideas?
My code:
private val mApiCallback: ApiCallback = object : ApiCallback {
override fun onServiceDisconnected() {}
override fun onServiceConnected() {
try {
mApi?.registerCallback()
} catch (e: RemoteException) {
Log.e("RegisterCallback", "Error code:" + e.message)
}
}
override fun onEvent(event: Int, data: String?) {
var show = false
when (event) {
ApiEvents.EVENT_RADAR_WARNING -> show = true
}
// Handle events
}
}
override fun onCreate(
savedInstanceState: Bundle?
) {
super.onCreate(savedInstanceState)
mApi = Api.init(applicationContext, "com.sygic.fleet", "com.sygic.fleet.SygicService", mApiCallback)
mApi?.connect()
mEvents[ApiEvents.EVENT_ROUTE_FINISH] = "Radar próximo";
}
Related
I'm trying to show images from my Firebase Realtime Database storage. I've done this before with a previous version of my app, but the difference is how I implemented it. My adapter and arraylist class are exactly the same, but instead of using an activity I switched to using fragments.
What I essentially did was copy my old work and make the appropriate changes so I wouldn't run into errors, but unfortunately I ran into some. My images from Firebase are not showing up at all and I'm not sure what is the problem.
Adapter Class
class AbstractAdapter(private val mContext: Context, private val abstractList: ArrayList<Abstract>) : RecyclerView.Adapter<AbstractAdapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.abstract_image_view, parent, false)
return ViewHolder(view)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
Glide.with(mContext)
.load(abstractList[position].abstract)
.into(holder.imageView)
}
override fun getItemCount(): Int {
return abstractList.size
}
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
var imageView: ImageView = itemView.findViewById(R.id.abstractImageView)
}
companion object {
private const val Tag = "RecyclerView"
}
}
Data class
class Abstract {
var abstract: String? = null
constructor() {}
constructor(abstract: String?) {
this.abstract = abstract
}
}
Fragment in which images will be shown
class AbstractWallpapers: Fragment(), PurchasesUpdatedListener {
private lateinit var subscribeAbstract: Button
private var billingClient: BillingClient? = null
lateinit var recyclerView: RecyclerView
lateinit var abstractlist: ArrayList<Abstract>
private var recyclerAdapterAbstract: AbstractAdapter? = null
private var myRef3: DatabaseReference? = null
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_abstract_wallpaper, container, false)
recyclerView = requireView().findViewById(R.id.abstract_recyclerView)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
recyclerView = view.findViewById(R.id.abstract_recyclerView)
val layoutManager = LinearLayoutManager(requireActivity())
recyclerView.layoutManager = layoutManager
recyclerView.setHasFixedSize(true)
myRef3 = FirebaseDatabase.getInstance().reference
abstractlist = ArrayList()
ClearAll()
GetDataFromFirebase()
subscribeAbstract = view.findViewById(R.id.abstract_subscribe_btn)
subscribeAbstract.setOnClickListener {
subscribeAbstract()
}
// Establish connection to billing client
//check subscription status from google play store cache
//to check if item is already Subscribed or subscription is not renewed and cancelled
billingClient = BillingClient.newBuilder(requireActivity()).enablePendingPurchases().setListener(this).build()
billingClient!!.startConnection(object : BillingClientStateListener {
override fun onBillingSetupFinished(billingResult: BillingResult) {
if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {
val queryPurchase = billingClient!!.queryPurchases(BillingClient.SkuType.SUBS)
val queryPurchases = queryPurchase.purchasesList
if (queryPurchases != null && queryPurchases.size > 0) {
handlePurchases(queryPurchases)
} else {
saveSubscribeValueToPref(false)
}
}
}
override fun onBillingServiceDisconnected() {
Toast.makeText(requireActivity(), "Service Disconnected", Toast.LENGTH_SHORT).show()
}
})
//item subscribed
if (subscribeValueFromPref) {
subscribeAbstract.visibility = View.GONE
} else {
subscribeAbstract.visibility = View.VISIBLE
}
}
// Code related to Firebase
#SuppressLint("NotifyDataSetChanged")
private fun GetDataFromFirebase() {
val query: Query = myRef3!!.child("Abstract")
query.addListenerForSingleValueEvent(object : ValueEventListener {
#SuppressLint("NotifyDataSetChanged")
override fun onDataChange(snapshot: DataSnapshot) {
for (dataSnapshot: DataSnapshot in snapshot.children) {
val abstract = Abstract()
abstract.abstract = dataSnapshot.child("abstract").value.toString()
abstractlist.add(abstract)
}
recyclerAdapterAbstract = abstractlist.let { AbstractAdapter(requireActivity(), it) }
recyclerView.adapter = recyclerAdapterAbstract
recyclerAdapterAbstract!!.notifyDataSetChanged()
}
override fun onCancelled(error: DatabaseError) {}
})
if (recyclerAdapterAbstract != null) recyclerAdapterAbstract!!.notifyDataSetChanged()
}
private fun ClearAll() {
abstractlist.clear()
abstractlist = ArrayList()
}
I fixed my problem. It turns out my rules in Firebase Realtime Database rules for read were set to false instead. My code works perfect. It was only a stupid error on my part.
`Hello friends, good morning. What should I do to restart the pedometer? I saw many samples, but what they all had in common was to click on the desired view to restart the pedometer. But I do not want that to happen. The number of steps should be 0 every 24 hours. My codes:
Thanks for the code to explain
class Home : Fragment(), SensorEventListener {
lateinit var binding: FragmentHomeBinding
private var sensorManager: SensorManager? = null
private var running = false
private var totalStep = 0f
private var previousTotalStep = 0f
//
private lateinit var mHandler: Handler
private var calories = 0.0
val todayDate: String = DateFormat.getDateInstance(DateFormat.MEDIUM).format(Date())
val dateForCalories = "$todayDate-kcal"
override fun onResume() {
super.onResume()
running = true
val stepSensor = sensorManager?.getDefaultSensor(Sensor.TYPE_STEP_COUNTER)
sensorManager?.registerListener(this, stepSensor, SensorManager.SENSOR_DELAY_UI)
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentHomeBinding.inflate(inflater, container, false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
//load View model
detailsViewModel.messageTodayLiveData.observe(viewLifecycleOwner) {
binding.homeLayout.messageDay.text = it.message
}
materialDrawer()
loadData()
resetSteps()
calculateCalories()
sensorManager = requireContext().getSystemService(Context.SENSOR_SERVICE) as SensorManager
}
private fun resetSteps() {
}
private fun saveDate() {
Constant.editor(requireContext()).putFloat(STEPNUMBER, previousTotalStep).apply()
}
private fun loadData() {
previousTotalStep = Constant.getSharePref(requireContext()).getFloat(STEPNUMBER, 0f)
}
override fun onSensorChanged(event: SensorEvent?) {
if (running)
totalStep = event!!.values[0]
val currentSteps = totalStep.toInt() - previousTotalStep.toInt()
binding.homeLayout.txtSteps.text = ("$currentSteps")
binding.homeLayout.txtKilometers.text =
String.format(getString(R.string.meters_today), stepsToMeters(currentSteps))
binding.homeLayout.progressStep.apply {
setProgressWithAnimation(currentSteps.toFloat())
}
}
override fun onAccuracyChanged(p0: Sensor?, p1: Int) {
}
}
Service codes
class MyService : Service(), SensorEventListener {
private var sensorManager: SensorManager? = null
private var running = false
private var totalStep = 0f
private var previousTotalStep = 0f
val todayDate: String = DateFormat.getDateInstance(DateFormat.MEDIUM).format(Date())
private lateinit var sharedPref: SharedPreferences
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
try {
running = true
val stepSensor = sensorManager?.getDefaultSensor(Sensor.TYPE_STEP_COUNTER)
sensorManager?.registerListener(this, stepSensor, SensorManager.SENSOR_DELAY_UI)
} catch (e: Exception) {
}
return START_STICKY
}
override fun onBind(p0: Intent?): IBinder? {
return null
}
override fun onSensorChanged(event: SensorEvent?) {
if (running) {
totalStep = event!!.values[0]
val currentSteps = totalStep.toInt() - previousTotalStep.toInt()
Constant.editor(this).putFloat(STEPNUMBER, previousTotalStep).apply()
}
}
override fun onAccuracyChanged(p0: Sensor?, p1: Int) {
TODO("Not yet implemented")
}
override fun stopService(name: Intent?): Boolean {
return super.stopService(name)
}
override fun onDestroy() {
val intent = Intent(this, MyPhoneReceiver::class.java)
sendBroadcast(intent)
super.onDestroy()
}
}
Broadcast codes
class MyPhoneReceiver : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
if (intent.action?.equals(Intent.ACTION_BOOT_COMPLETED, ignoreCase = true) == true) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(Intent(context, MyService::class.java))
} else {
context.startService(Intent(context, MyService::class.java))
}
}
}
}
I have made an app that uses an API to make a request and then shows the results in a RecyclerView.
I was following a tutorial and in it they used a differCallback and a liveData so the lists updates and such. However whenever the user makes a second search, the recyclerView should only show the new results but the previous results don't dissapear and the new results just appear below the previous search.
I have debugged it for quite some time now but I don't seem to understand where the list is made and where sure it be updated (or in this case cleared).
I tried using .clear() for the diff (Asynclistdiffer), creating a new list in the onBindViewHolder and then clearing that list every time the "search" is called but without any luck. As im still a beginner I don't have a clue on where or what is happening, all your helo will be greatly appreciated
this is my adapter:
class RecipePreviewAdapter : RecyclerView.Adapter<RecipePreviewAdapter.RecipePreviewViewHolder>() {
inner class RecipePreviewViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
private val differCallback = object : DiffUtil.ItemCallback<Recipe>() {
override fun areItemsTheSame(oldItem: Recipe, newItem: Recipe): Boolean {
return oldItem.sourceUrl == newItem.sourceUrl
}
override fun areContentsTheSame(oldItem: Recipe, newItem: Recipe): Boolean {
return oldItem == newItem
}
}
val differ = AsyncListDiffer(this, differCallback)
lateinit var recipeList: MutableList<Recipe>
var isRecipeListInitialized = false
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecipePreviewViewHolder {
return RecipePreviewViewHolder(
LayoutInflater.from(parent.context).inflate(
R.layout.item_recipe_preview,
parent,
false
)
)
}
override fun onBindViewHolder(holder: RecipePreviewViewHolder, position: Int) {
recipeList = differ.currentList.toMutableList()
isRecipeListInitialized = true
// Log.d(TAG, recipeList.toString())
val recipe = recipeList[position]
holder.itemView.apply {
Glide.with(this).load(recipe.image).into(ivRecipeImagePreview)
tvRecipeTitlePreview.text = recipe.title
tvTimeToMakeTVPreview.text = "${recipe.readyInMinutes} minutes"
tvSummaryPreview.text = Jsoup.parse(recipe.summary).text()
setOnClickListener {
onItemClickListener?.let { it(recipe) }
}
}
}
override fun getItemCount(): Int {
return differ.currentList.size
}
And this is where I call it:
class SearchRecipeFragment : Fragment(R.layout.fragment_search_recipe) {
lateinit var viewModel: RecipeViewModel
lateinit var recipeAdapter: RecipePreviewAdapter
val TAG = "SearchRecipeFragment"
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
viewModel = (activity as RecipesActivity).viewModel
setupRecyclerView()
recipeAdapter.setOnItemClickListener {
val bundle = Bundle().apply {
putSerializable("recipe", it)
}
findNavController().navigate(
R.id.action_searchRecipeFragment_to_recipeFragment,
bundle
)
}
etSearch.setOnKeyListener(View.OnKeyListener { _, keyCode, event ->
if (keyCode == KeyEvent.KEYCODE_ENTER && event.action == KeyEvent.ACTION_DOWN) {
if (etSearch.text.toString().isNotEmpty()) {
viewModel.searchRecipe(etSearch.text.toString())
}
return#OnKeyListener true
}
false
})
viewModel.searchRecipeLiveData.observe(viewLifecycleOwner, Observer { response ->
when (response) {
is Resource.Success -> {
hideProgressBar()
response.data?.let { recipeResponse ->
recipeAdapter.differ.submitList(recipeResponse.results.toList())
}
}
is Resource.Error -> {
hideProgressBar()
response.message?.let { message ->
Log.e(TAG, "An error occurred: $message")
Toast.makeText(activity, "An error occurred: $message", Toast.LENGTH_LONG)
.show()
}
}
is Resource.Loading -> {
showProgressBar()
}
}
})
}
Ans this is the part of the ViewModel that I'm not really sure what it does
private fun handleSearchRecipeResponse(response: Response<SearchRecipeResponse>): Resource<SearchRecipeResponse> {
if (response.isSuccessful) {
response.body()?.let { resultResponse ->
searchRecipesPage++
if (searchRecipesResponse == null) {
searchRecipesResponse = resultResponse
} else {
val oldRecipes = searchRecipesResponse?.results
val newRecipes = resultResponse.results
oldRecipes?.addAll(newRecipes)
}
return Resource.Success(searchRecipesResponse ?: resultResponse)
}
}
return Resource.Error(response.message())
}
too late but it is because of "searchRecipesResponse". You have to set it to "null" and reset searchRecipesPage to 1 for each new search in etSearch.setOnKeyListener().
I'm a Beginner in Kotlin and I want a way to display Interstitial Ad every time I click on the button tvName, but on the contrary, the app crashes whenever I click on the button. I searched for the solution for a long time.
Here's MainActivity
import ...
#Suppress("UNREACHABLE_CODE")
class MainActivity : AppCompatActivity() {
lateinit var mAdView : AdView
var adapter:ChaptersAdapter?=null
var listOfChapters= ArrayList<Chapters>()
#SuppressLint("WrongViewCast")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
MobileAds.initialize(this) {}
mAdView = findViewById(R.id.adView)
val adRequest = AdRequest.Builder().build()
mAdView.loadAd(adRequest)
loadChapters()
adapter = ChaptersAdapter(listOfChapters, this)
lvchapters.adapter = adapter
MobileAds.initialize(this,
"ca-app-pub-3940256099942544~3347511713")
mInterstitialAd = InterstitialAd(this)
mInterstitialAd.adUnitId = "ca-app-pub-3940256099942544/1033173712"
mInterstitialAd.loadAd(AdRequest.Builder().build())
}
fun loadChapters(){
listOfChapters.add(Chapters(" Chapter 1 ", applicationContext.assets.open("Chapter0.txt").bufferedReader().use {
it.readText()
}
))
listOfChapters.add(Chapters(" Chapter 2 ", applicationContext.assets.open("Chapter1.txt").bufferedReader().use {
it.readText()
}
))
}
class ChaptersAdapter: BaseAdapter {
var context:Context?=null
var listOfChaptersLocal= ArrayList<Chapters>()
constructor(listOfChapters:ArrayList<Chapters>,context:Context){
listOfChaptersLocal=listOfChapters
this.context=context
}
override fun getView(p0: Int, p1: View?, p2: ViewGroup?): View {
val chapters= listOfChaptersLocal[p0]
var inflator= context!!.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val chaptersView=inflator.inflate(R.layout.list_chapters,null)
chaptersView.tvName.text= chapters.name!!
chaptersView.**tvName.setOnClickListener** {
// **i want to show the Ads in this time frame** but like this example it didn't work
if (mInterstitialAd.isLoaded) {
mInterstitialAd.show()
} else {
Log.d("TAG", "The interstitial wasn't loaded yet.")
}
val intent =Intent(context,ChapterDetails::class.java)
intent.putExtra("name",chapters.name!!)
intent.putExtra("des",chapters.des!!)
context!!.startActivity(intent)
}
return chaptersView
}
override fun getItem(p0: Int): Any {
return listOfChaptersLocal[p0]
}
override fun getItemId(p0: Int): Long {
return p0.toLong()
}
override fun getCount(): Int {
return listOfChaptersLocal.size
}
}
}
i want to use BottomNavigationView in my app and i'm facing this problem with kotlin (never had it before with java) i see this message :
classifier 'listFragment' does not have a companion object and thus must be initialized here
this is my code :
private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
when (item.itemId) {
R.id.listNav -> {
//the problem is here in listFragment word below
setFragment(listFragment)
return#OnNavigationItemSelectedListener true
}
R.id.accountNav -> {
//the problem is here also in accountFragment word below
setFragment(accountFragment)
return#OnNavigationItemSelectedListener true
}
false
}
private fun setFragment(fragment: Fragment) {
supportFragmentManager.beginTransaction().replace(R.id.mainFrame , fragment).commit()
}
any help is appreciated :)
i edited it this way and it worked :
private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
when (item.itemId) {
R.id.listNav -> {
val mFragment = cartFragment.newInstance()
openFragment(mFragment)
return#OnNavigationItemSelectedListener true
}
R.id.cartNav -> {
val mFragment = cartFragment.newInstance()
openFragment(mFragment)
return#OnNavigationItemSelectedListener true
}
R.id.supportNav -> {
val mFragment = supportFragment.newInstance()
openFragment(mFragment)
return#OnNavigationItemSelectedListener true
}
R.id.accountNav -> {
val mFragment = accountFragment.newInstance()
openFragment(mFragment)
return#OnNavigationItemSelectedListener true
}
}
false
}
private fun openFragment(fragment: Fragment) {
val transaction = supportFragmentManager.beginTransaction()
transaction.replace(R.id.mainFrame, fragment)
transaction.addToBackStack(null)
transaction.commit()
}
fragments goes like this :
class listFragment : Fragment() {
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
inflater.inflate(R.layout.fragment_list, container, false)
companion object {
fun newInstance(): listFragment = listFragment()
}
}
If someone is struggling (like I was) with the error in the title produced in a when block,
when compared a sealed object, then don't forget the is keyword, like this:
when (someSealedClass) {
is SomeSealedClass.Foo -> ...
// ^^ don't forget this
}