PinInput fragment: minor updates

Change-Id: Ifa6fd4afadb06182b2c3b2acdfa94ddcdc2afb29

jami-android/app/src/main/java/cx/ring/account/pinInput/EditTextPinInputFragment.kt

@@ -32,14 +32,13 @@ import dagger.hilt.android.AndroidEntryPoint
 class EditTextPinInputFragment : Fragment() {
 
     private val viewModel: EditTextPinInputViewModel by viewModels({ requireParentFragment() })
-    private lateinit var binding: EditTextPinInputBinding
+    private var binding: EditTextPinInputBinding? = null
 
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
-    ): View =
-        EditTextPinInputBinding.inflate(inflater, container, false).apply {
+    ): View = EditTextPinInputBinding.inflate(inflater, container, false).apply {
         binding = this
     }.root
 
@@ -47,7 +46,7 @@ class EditTextPinInputFragment : Fragment() {
         super.onViewCreated(view, savedInstanceState)
         // to have the text entered in the text field
         val enterPinEditText: TextInputEditText = view.findViewById(R.id.enter_pin)
-        val startingAt: Int = 17
+        val startingAt = 17
         enterPinEditText.doOnTextChanged { pin, _, _, _ ->
             viewModel.checkPin(pin.toString()).let {
                 // if the pin is not valid and it is at length 17 (format of the pin) there is an
@@ -59,12 +58,14 @@ class EditTextPinInputFragment : Fragment() {
         }
     }
 
-    private fun showErrorPanel() {
-        binding.enterPin.error = getString(R.string.error_format_not_supported)
-        binding.enterPin.requestFocus()
+    override fun onDestroyView() {
+        super.onDestroyView()
+        binding = null
     }
 
-    companion object {
-        private val TAG = EditTextPinInputFragment::class.simpleName!!
+    private fun showErrorPanel() {
+        binding?.enterPin?.error = getString(R.string.error_format_not_supported)
+        binding?.enterPin?.requestFocus()
     }
+
 }
\ No newline at end of file

jami-android/app/src/main/res/layout/edit_text_pin_input.xml

@@ -19,8 +19,6 @@
             android:id="@+id/enter_pin"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:drawableStart="@drawable/password_24"
-            android:drawablePadding="5dp"
             android:hint="@string/account_link_prompt_pin_manually"
             android:imeOptions="actionNext"
             android:inputType="textNoSuggestions" />