How To Show Interstitial Ads in The getView Function in Kotlin? - android-studio

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
}
}
}

Related

Firebase Realtime Database images are not showing up in fragment kotlin class

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.

MainActivity is not showing log statements

Hi I am new to android development and the problem is Whenever I am using MainActivity in logcat as a filter it is not showing me Log statements for this Log.i(TAG, "TAG on Fb")(my tag is also MainActivity) and Log.i(TAG, "onitemclick $position") for this it is shown by its function that is onItemClick but the same happen with this statement whenever I am trying to filter it on the basis of MainActivity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
userMaps = generateSampleData() as MutableList<user>
//set layout manager on the screen => RV
rvmaps.layoutManager = LinearLayoutManager(this)
//set adapter on RV
mapAdapter = mapadapter(this, userMaps, object: mapadapter.OnClickListener{
override fun onitemclick(position: Int) {
Log.i(TAG, "onitemclick $position")
val intent = Intent(this#MainActivity, googlemaps::class.java)
// here we will use putextra which help us to put extra data to another activity through data
intent.putExtra(user_data_map, userMaps[position])
startActivity(intent)
}
})
rvmaps.adapter = mapAdapter
fabcreatemap.setOnClickListener{
Log.i(TAG, "TAG on Fb")
val intent = Intent(this#MainActivity, createmap::class.java)
intent.putExtra(user_map_title, "new map name")
startActivityForResult(intent, requestcode)
}
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
if(requestcode == requestCode && resultCode == Activity.RESULT_OK)
{
val usermap = data?.getSerializableExtra(user_data_map) as user
// userMaps.add(usermap)
// mapAdapter.notifyItemChanged(userMaps.size-1)
}
super.onActivityResult(requestCode, resultCode, data)
}
}

kotlin adapter give me error in mainactivity

I have a class called medicine, I got an error when writing adapter = MedicineAdapter(this, this.medicineList!!) in main activity I saw the error in run window.
My app is crashing when I want to run and I saw one error which is about adapter's line
Also, I have medicine_items it is my custom design I assigned it to the adapter in my adapter also I checked my ids but ı don t know why am I got an error
MainActivity
class MainActivity : AppCompatActivity() {
private var adapter: MedicineAdapter? = null
private var medicineList : ArrayList<Medicine>? = null
private var recyclerView: RecyclerView? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
recyclerView =
findViewById<View>(R.id.recycler) as RecyclerView
adapter = MedicineAdapter(this, this.medicineList!!)
val layoutManager = LinearLayoutManager(applicationContext)
recyclerView!!.layoutManager = layoutManager
recyclerView!!.itemAnimator = DefaultItemAnimator()
// Add a neat dividing line between items in the list
recyclerView!!.addItemDecoration(
DividerItemDecoration(this,
LinearLayoutManager.VERTICAL))
// set the adapter
recyclerView!!.adapter = adapter
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
menuInflater.inflate(R.menu.menu, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem): Boolean = when (item.itemId) {
R.id.addBtn -> {
val intent = Intent(this,AddNewMedicine::class.java)
startActivity(intent)
true
}
else -> super.onOptionsItemSelected(item)
}
fun addMedicine(m: Medicine){
medicineList!!.add(m)
adapter!!.notifyDataSetChanged()
}
}
MyAdapter
class MedicineAdapter(
private val mainActivity: MainActivity,
private val medicineList: ArrayList<Medicine>)
: RecyclerView.Adapter<MedicineAdapter.ListItemHolder>(){
override fun onCreateViewHolder(
parent: ViewGroup, viewType: Int): ListItemHolder {
val itemView = LayoutInflater.from(parent.context).inflate(R.layout.medicine_items, parent, false)
return ListItemHolder(itemView)
}
inner class ListItemHolder(view: View) :
RecyclerView.ViewHolder(view),
View.OnClickListener {
internal var name = view.findViewById<TextView>(R.id.name)
internal var amount = view.findViewById<TextView>(R.id.amount)
internal var description = view.findViewById<TextView>(R.id.description)
init {
view.isClickable = true
view.setOnClickListener(this)
}
override fun onClick(view: View) {
//val intentToCarPager = Intent(view!!.context, CarPagerActivity::class.java)
//view.context.startActivity(intentToCarPager)
}
}
override fun onBindViewHolder(holder: ListItemHolder, position: Int) {
val medicine = medicineList!![position]
holder.name.text = medicine.name.toString()
holder.amount.text = medicine.amount.toString()
holder.description.text = medicine.desription.toString()
}
override fun getItemCount(): Int {
if (medicineList != null) {
return medicineList.size
}
return -1
}
}
my run window
It's because here:
private var medicineList : ArrayList<Medicine>? = null
you have initialized medicineList as null and you haven't given it a proper value along the way and here:
adapter = MedicineAdapter(this, this.medicineList!!)
you have asserted that it is not null and tried to assign it to the adapter.
If you have no elements to add to your array at first, initialize it this way:
private var medicineList : ArrayList<Medicine> = arrayListOf()
and then you can add elements to it:
medicineList.add(myMedicine)

Error "None of the following functions can be called with the arguments supplied:" with Toast

I want to create a code to click on items of RecyclerView. I found one from Internet, however it keep getting this error:
None of the following functions can be called with the arguments supplied:
public open fun makeText(p0: Context!, p1: CharSequence!, p2: Int): Toast! defined in android.widget.Toast
public open fun makeText(p0: Context!, p1: Int, p2: Int): Toast! defined in android.widget.Toast
Here's my code:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
recyclerView.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
val users = ArrayList<User>()
val adapter = CustomAdapter(users)
recyclerView.adapter = adapter
recyclerView.addOnItemClickListener(object : OnItemClickListener {
override fun onItemClicked(position: Int, view: View) {
Toast.makeText(this, "Clicked on " + users.get(position).name, Toast.LENGTH_LONG).show()
}
})
}
interface OnItemClickListener {
fun onItemClicked(position: Int, view: View)
}
fun RecyclerView.addOnItemClickListener(onClickListener: OnItemClickListener) {
this.addOnChildAttachStateChangeListener(object : RecyclerView.OnChildAttachStateChangeListener {
override fun onChildViewDetachedFromWindow(view: View) {
view.setOnClickListener(null)
}
override fun onChildViewAttachedToWindow(view: View) {
view.setOnClickListener {
val holder = getChildViewHolder(view)
onClickListener.onItemClicked(holder.adapterPosition, view)
}
}
})
}
How can I fix that error message?
Toast.makeText(this#YOUR_ACTIVITY_NAME, "Clicked on " + users.get(position).name, Toast.LENGTH_LONG).show()
//In Activity use:
Toast.makeText(this#YOUR_ACTIVITY_NAME, "your message", Toast.LENGTH_LONG).show()
//In Fragments use:
Toast.makeText(requireActivity(), "your message", Toast.LENGTH_LONG).show()
Your problem will be solved...

Kotlin with Anko unknown resource and null reference

I Want to get Data from https://www.thesportsdb.com/api/v1/json/1/eventspastleague.php?id=4328
But I have error
java.lang.IllegalArgumentException: Parameter specified as non-null is
null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull,
parameter data at
com.yutra.jadwalbola.last_match.LastMatchFragment.showTeamList(Unknown
Source:21) at
com.yutra.jadwalbola.last_match.LastMatchPresenter$getTeamList$1$1.invoke(LastMatchPresenter.kt:21)
at
com.yutra.jadwalbola.last_match.LastMatchPresenter$getTeamList$1$1.invoke(LastMatchPresenter.kt:8)
this is my LastMatchDBApi
object LastMatchDBApi {
fun getMatch(): String {
return Uri.parse(BuildConfig.BASE_URL).buildUpon()
.appendPath("api")
.appendPath("v1")
.appendPath("json")
.appendPath(BuildConfig.TSDB_API_KEY)
.appendPath("eventspastleague.php")
.appendQueryParameter("id", "4328")
.build()
.toString()
}
}
this is my serialized
data class LastMatch(
#SerializedName("strEvent")
var eventName: String? = null
)
this is my presenter
class LastMatchPresenter(private val view: MainView,
private val apiRepository: ApiRepository,
private val gson: Gson) {
fun getTeamList() {
view.showLoading()
doAsync {
val data = gson.fromJson(apiRepository
.doRequest(LastMatchDBApi.getMatch()),
LastMatchResponse::class.java
)
uiThread {
view.hideLoading()
view.showTeamList(data.lastMatch)
}
}
}
}
this is my response
data class LastMatchResponse(
val lastMatch: List<LastMatch>
)
this is my fragment activity
class LastMatchFragment : Fragment(), MainView {
private lateinit var progressBar: ProgressBar
private lateinit var swipeRefresh: SwipeRefreshLayout
private var lastMatch: MutableList<LastMatch> = mutableListOf()
private lateinit var adapter: MainAdapter
private lateinit var listTeam: RecyclerView
private var key : String = "4328"
companion object {
fun newInstance(): LastMatchFragment {
return LastMatchFragment()
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view = UI {
linearLayout {
lparams (width = matchParent, height = wrapContent)
orientation = LinearLayout.VERTICAL
topPadding = dip(16)
leftPadding = dip(16)
rightPadding = dip(16)
// textView {
// text = "test image"
// }
relativeLayout{
lparams (width = matchParent, height = wrapContent)
listTeam = recyclerView {
lparams (width = matchParent, height = wrapContent)
layoutManager = LinearLayoutManager(ctx)
}
progressBar = progressBar {
}.lparams{
centerHorizontally()
}
}
}
}.view
adapter = MainAdapter(lastMatch)
listTeam.adapter = adapter
val request = ApiRepository()
val gson = Gson()
var presenter = LastMatchPresenter(this, request, gson)
presenter.getTeamList()
return view
}
override fun showLoading() {
progressBar.visible()
}
override fun hideLoading() {
progressBar.invisible()
}
override fun showTeamList(data: List<LastMatch>) {
lastMatch.clear()
lastMatch.addAll(data)
adapter.notifyDataSetChanged()
}
}
IF anyone have sourcode to get this data please help me
In below code you are passing list as null from LastMatchPresenter class
view.showTeamList(data.lastMatch)
By default all variables and parameters in Kotlin are non-null. If you want to pass null parameter to the method you should add ? to it's type, for example:
override fun showTeamList(data: List<LastMatch>?) {
lastMatch.clear()
lastMatch.addAll(data)
adapter.notifyDataSetChanged()
}

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