implements rxbinders in edit text textwatchers

app/src/main/java/chat/rocket/android/fragment/server_config/LoginFragment.kt

@@ -5,9 +5,7 @@ import android.support.constraint.ConstraintLayout
 import android.support.design.widget.Snackbar
 import android.support.design.widget.TextInputLayout
 import android.support.v4.app.Fragment
-import android.text.Editable
 import android.text.TextUtils
-import android.text.TextWatcher
 import android.view.View
 import android.widget.Button
 import android.widget.TextView
@@ -18,8 +16,10 @@ import chat.rocket.android.log.RCLog
 import chat.rocket.core.models.LoginServiceConfiguration
 import chat.rocket.persistence.realm.repositories.RealmLoginServiceConfigurationRepository
 import chat.rocket.persistence.realm.repositories.RealmPublicSettingRepository
+import com.jakewharton.rxbinding2.widget.RxTextView
 import java.util.*
 
+
 /**
  * Login screen.
  */
@@ -57,43 +57,29 @@ class LoginFragment : AbstractServerConfigFragment(), LoginContract.View {
         textInputUsername = rootView.findViewById(R.id.text_input_username)
         textInputPassword = rootView.findViewById(R.id.text_input_passwd)
 
-        //setting text change listeners to username and password edit texts
-        txtUsername.addTextChangedListener(object :TextWatcher
-        {
-            override fun afterTextChanged(p0: Editable?) {
-            }
+        setUpRxBinders()
 
-            override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
-            }
+        waitingView = rootView.findViewById(R.id.waiting)
 
-            override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
-                if(!TextUtils.isEmpty(txtUsername.text.toString()) && textInputUsername.isErrorEnabled)
-                    textInputUsername.setErrorEnabled(false)
-            }
-        })
+        btnEmail.setOnClickListener { _ -> presenter.login(txtUsername.text.toString(), txtPasswd.text.toString()) }
 
-        txtPasswd.addTextChangedListener(object :TextWatcher
-        {
-            override fun afterTextChanged(p0: Editable?) {
+        btnUserRegistration.setOnClickListener { _ ->
+            UserRegistrationDialogFragment.create(hostname, txtUsername.text.toString(), txtPasswd.text.toString())
+                    .show(fragmentManager!!, "UserRegistrationDialogFragment")
+        }
     }
 
-            override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
+    fun setUpRxBinders() {
+        RxTextView.textChanges(txtUsername).subscribe { text ->
+            if (!TextUtils.isEmpty(text) && textInputUsername.isErrorEnabled)
+                textInputUsername.setErrorEnabled(false)
         }
 
-            override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
-                if(!TextUtils.isEmpty(txtPasswd.text.toString()) && textInputPassword.isErrorEnabled)
+        RxTextView.textChanges(txtPasswd).subscribe { text ->
+            if (!TextUtils.isEmpty(text) && textInputPassword.isErrorEnabled)
                 textInputPassword.setErrorEnabled(false)
         }
-        })
-        
-        waitingView = rootView.findViewById(R.id.waiting)
-
-        btnEmail.setOnClickListener { _ -> presenter.login(txtUsername.text.toString(), txtPasswd.text.toString()) }
 
-        btnUserRegistration.setOnClickListener { _ ->
-            UserRegistrationDialogFragment.create(hostname, txtUsername.text.toString(), txtPasswd.text.toString())
-                    .show(fragmentManager!!, "UserRegistrationDialogFragment")
-        }
     }
 
     override fun showLoader() {
@@ -101,12 +87,12 @@ class LoginFragment : AbstractServerConfigFragment(), LoginContract.View {
         waitingView.visibility = View.VISIBLE
     }
 
-    override fun showErrorInUsernameEditText(){
+    override fun showErrorInUsernameEditText() {
         textInputUsername.setErrorEnabled(true);
         textInputUsername.setError("Enter a Username")
     }
 
-    override fun showErrorInPasswordEditText(){
+    override fun showErrorInPasswordEditText() {
         textInputPassword.setErrorEnabled(true);
         textInputPassword.setError("Enter a Password")
     }

app/src/main/java/chat/rocket/android/fragment/server_config/LoginPresenter.kt

@@ -32,7 +32,6 @@ class LoginPresenter(private val loginServiceConfigurationRepository: LoginServi
     }
 
 
-
     override fun goBack() {
         val context = RocketChatApplication.getInstance()
         val hostname = RocketChatCache.getSelectedServerHostname()
@@ -47,7 +46,7 @@ class LoginPresenter(private val loginServiceConfigurationRepository: LoginServi
     override fun login(username: String, password: String) {
 
         //set error to edit texts
-        if (TextUtils.isEmpty(username)&&TextUtils.isEmpty(password)) {
+        if (TextUtils.isEmpty(username) && TextUtils.isEmpty(password)) {
             view.showErrorInUsernameEditText()
             view.showErrorInPasswordEditText()
             return
@@ -56,7 +55,7 @@ class LoginPresenter(private val loginServiceConfigurationRepository: LoginServi
             view.showErrorInUsernameEditText()
             return
         }
-        if (TextUtils.isEmpty(password)){
+        if (TextUtils.isEmpty(password)) {
             view.showErrorInPasswordEditText()
             return
         }