I have an exisitng code which I integrate with Live data by using retrofit.
Now if I want to integrate databinding, where are all changes to be done to make the code looks perfect?
Here is my code.
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="#000000"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Android Versions"
android:textColor="#ffffff"
android:textSize="20sp" />
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
items.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:background="#445566"
android:layout_margin="5dp"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tvFname"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top|start"
android:layout_marginTop="8dp"
android:textColor="#ffffff"
android:layout_weight="1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:id="@+id/tvLname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|start"
android:padding="5dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:ellipsize="end"
android:textColor="#ffffff"
android:maxLines="5"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvFname"/>
</android.support.constraint.ConstraintLayout>
Here is view model class which I integrated
class AndroidViewModel:ViewModel() {
private val mService = RetrofitService()
fun getAndroidData():MutableLiveData<List<AndroidData>>?{
return mService.loadAndroidData()
}
}
Pojo class generated is just a simple one:
data class AndroidData (val name:String, val apiLevel:String)
Service integration:
class RetrofitService {
val liveUserResponse:MutableLiveData<List<AndroidData>> = MutableLiveData()
companion object Factory {
var gson = GsonBuilder().setLenient().create()
fun create(): ApiInterface {
Log.e("retrofit","create")
val retrofit = Retrofit.Builder()
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create(gson))
.baseUrl("https://learn2crack-json.herokuapp.com/api/")
.build()
return retrofit.create(ApiInterface::class.java)
}
}
fun loadAndroidData(): MutableLiveData<List<AndroidData>>? {
Log.e("loadAndroidData","yes")
val retrofitCall = create().getAndroid()
retrofitCall.enqueue(object : Callback<List<AndroidData>> {
override fun onFailure(call: Call<List<AndroidData>>, t: Throwable?) {
Log.e("on Failure :", "retrofit error")
}
override fun onResponse(call: Call<List<AndroidData>>, response: retrofit2.Response<List<AndroidData>>) {
val list = response.body()
for (i in list.orEmpty()){
Log.e("on response 1:", i.name)
}
liveUserResponse.value = list
Log.e("hasActiveObservers 1", liveUserResponse.hasActiveObservers().toString()+" check")
Log.e("on response 2 :", liveUserResponse.toString()+" check")
}
})
return liveUserResponse
}
Main Activity:
class MainActivity : AppCompatActivity(){
private lateinit var linearLayoutManager: LinearLayoutManager
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
linearLayoutManager = LinearLayoutManager(this)
recyclerView.setHasFixedSize(true)
getAndroidVersion()
}
private fun getAndroidVersion() {
Log.e("getAndroidVersion", "yes")
val mAndroidViewModel = ViewModelProviders.of(this@MainActivity).get(AndroidViewModel::class.java)
mAndroidViewModel.getAndroidData()?.observe(this, Observer<List<AndroidData>> { androidList ->
Log.e("list", androidList?.size.toString())
recyclerView.adapter = EmpAdapter(this@MainActivity, androidList as ArrayList<AndroidData>, object :
ItemClickListener {
override fun onItemClick(pos: Int, name:String) {
Toast.makeText(applicationContext, "item "+pos+ "clicked"+ name, Toast.LENGTH_LONG).show()
}
})
})
}
}
Adapter class:
class EmpAdapter(
var context: MainActivity,
var mEmpList: ArrayList<AndroidData>,
private val itemClick:ItemClickListener
) :
RecyclerView.Adapter<EmpAdapter.EmpHolder>() {
override fun getItemCount(): Int {
return mEmpList.size
}
companion object {
var mItemClickListener : ItemClickListener? = null
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): EmpHolder {
val view = LayoutInflater.from(context).inflate(R.layout.items, parent, false)
return EmpHolder(view)
}
override fun onBindViewHolder(holder: EmpHolder, position: Int) {
mItemClickListener = itemClick
holder.tvFname?.text = mEmpList[position].name
holder.tvLname?.text = mEmpList[position].apiLevel
RxView.clicks(holder.mView).subscribe {
mItemClickListener!!.onItemClick(position,mEmpList[position].name)
}
}
class EmpHolder(view: View) : RecyclerView.ViewHolder(view) {
val tvFname = view.tvFname
val tvLname = view.tvLname
val mView = view
}
}
interfaces for retrofit:
interface ApiInterface {
@GET("android")
fun getAndroid(): Call<List<AndroidData>>
}
Now my question is, if I integrate tag and in xml, which variable i need to specify for textview to integrate to connect for textview in adapter? Kindly guide me where are all I need to change to apply, if I use live data
