Add change server ability and respond to design feedback.

- Changed style of input boxes
- Updated button behavior to only enable when values have changed
- Added simple loading screen
- Added error handling messages when the change server fails
- Switched button order and simplified button text
- Added red validation messages below input
- Respond to user input, as they type
- Reformatted title area to match other screens
- Adjusted layouts to be percentage based to work more consistently on smaller screens
- Implemented logic for restoring the original server values

app/src/main/java/cash/z/ecc/android/ext/Const.kt

@@ -17,7 +17,18 @@ object Const {
     object Pref {
         const val FIRST_USE_VIEW_TX = "const.pref.first_use_view_tx"
         const val FEEDBACK_ENABLED = "const.pref.feedback_enabled"
-        const val SERVER_NAME = "const.pref.server_name"
+        const val SERVER_HOST = "const.pref.server_host"
         const val SERVER_PORT = "const.pref.server_port"
     }
+
+    /**
+     * Default values to use application-wide. Ideally, this set of values should remain very short.
+     */
+    object Default {
+        object Server {
+            // If you've forked the ECC repo, change this to your hosted lightwalletd instance
+            const val HOST = "lightwalletd.electriccoin.co"//"your.hosted.lightwalletd.org"
+            const val PORT = 9067
+        }
+    }
 }

app/src/main/java/cash/z/ecc/android/ext/Dialogs.kt

@@ -5,7 +5,10 @@ import android.app.Dialog
 import android.content.Context
 import android.content.Intent
 import android.provider.Settings
+import android.view.View
 import androidx.core.content.getSystemService
+import cash.z.ecc.android.sdk.exception.LightWalletException
+import cash.z.ecc.android.ui.MainActivity
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 
 
@@ -94,4 +97,32 @@ fun Context.showCriticalProcessorError(error: Throwable?, onRetry: () -> Unit =
             throw error ?: RuntimeException("Critical error while processing blocks and the user chose to exit.")
         }
         .show()
+}
+
+fun Context.showUpdateServerCriticalError(userFacingMessage: String, onConfirm: () -> Unit = {}): Dialog {
+    return MaterialAlertDialogBuilder(this)
+        .setTitle("Failed to Change Server")
+        .setMessage(userFacingMessage)
+        .setCancelable(false)
+        .setPositiveButton("Ok") { d, _ ->
+            d.dismiss()
+            onConfirm()
+        }
+        .show()
+}
+
+fun Context.showUpdateServerDialog(positiveText: String = "Update", onCancel: () -> Unit = {}, onUpdate: () -> Unit = {}): Dialog {
+    return MaterialAlertDialogBuilder(this)
+        .setTitle("Modify Lightwalletd Server?")
+        .setMessage("WARNING: Entering an invalid or untrusted server might result in misconfiguration or loss of funds!")
+        .setCancelable(false)
+        .setPositiveButton(positiveText) { dialog, _ ->
+            dialog.dismiss()
+            onUpdate()
+        }
+        .setNegativeButton("Cancel") { dialog, _ ->
+            dialog.dismiss()
+            onCancel
+        }
+        .show()
 }

app/src/main/java/cash/z/ecc/android/ui/settings/SettingsFragment.kt

@@ -1,13 +1,21 @@
 package cash.z.ecc.android.ui.settings
 
+import android.content.res.ColorStateList
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
-import cash.z.ecc.android.di.viewmodel.viewModel
+import android.widget.Toast
+import androidx.core.widget.doAfterTextChanged
+import cash.z.ecc.android.R
+import cash.z.ecc.android.ZcashWalletApp
 import cash.z.ecc.android.databinding.FragmentSettingsBinding
-import cash.z.ecc.android.ext.onClickNavBack
+import cash.z.ecc.android.di.viewmodel.viewModel
+import cash.z.ecc.android.ext.*
+import cash.z.ecc.android.sdk.exception.LightWalletException
+import cash.z.ecc.android.sdk.ext.collectWith
+import cash.z.ecc.android.sdk.ext.twig
 import cash.z.ecc.android.ui.base.BaseFragment
-import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import kotlinx.coroutines.launch
 
 class SettingsFragment : BaseFragment<FragmentSettingsBinding>() {
 
@@ -16,61 +24,131 @@ class SettingsFragment : BaseFragment<FragmentSettingsBinding>() {
     override fun inflate(inflater: LayoutInflater): FragmentSettingsBinding =
         FragmentSettingsBinding.inflate(inflater)
 
+    //
+    // Lifecycle
+    //
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        getCurrentServer()
+        mainActivity?.preventBackPress(this)
-        binding.hitAreaClose.onClickNavBack()
+        viewModel.init()
-        binding.buttonUpdate.setOnClickListener(View.OnClickListener {
+        binding.apply {
-            validateServerHost(view)
+            groupLoading.gone()
-        })
+            hitAreaExit.onClickNavBack()
-        binding.buttonReset.setOnClickListener(View.OnClickListener {
+            buttonReset.setOnClickListener(::onResetClicked)
-            resetServer()
+            buttonUpdate.setOnClickListener(::onUpdateClicked)
-            showUpdateServerDialog(view)
+            buttonUpdate.isActivated = true
-        })
+            buttonReset.isActivated = true
-    }
+            inputHost.doAfterTextChanged {
-
+                viewModel.pendingHost = it.toString()
-    private fun getCurrentServer() {
-        binding.inputTextLightwalletdServer.setText(viewModel.getServerHost())
-        binding.inputTextLightwalletdPort.setText(viewModel.getServerPort().toString())
-    }
-
-    private fun resetServer() {
-    }
-
-    private fun validateServerHost(view: View) {
-        var isError = false
-        if (binding.inputTextLightwalletdServer.text.toString().contains("http")) {
-            binding.lightwalletdServer.error = "Please remove http:// or https://"
-            isError = true
-        } else {
-            binding.lightwalletdServer.error = null
-        }
-        if (Integer.valueOf(binding.inputTextLightwalletdPort.text.toString()) > 65535) {
-            binding.lightwalletdPort.error = "Please enter port number below 65535"
-            isError = true
-        } else {
-            binding.lightwalletdPort.error = null
-        }
-        if (!isError) {
-            showUpdateServerDialog(view)
-        }
-    }
-
-    private fun showUpdateServerDialog(view: View) {
-        MaterialAlertDialogBuilder(view.context)
-            .setTitle("Modify lightwalletd Server?")
-            .setMessage("WARNING: Entering an invalid or compromised lighthttpd server might result in misconfiguration or loss of funds.")
-            .setCancelable(false)
-            .setPositiveButton("Update") { dialog, _ ->
-                dialog.dismiss()
-                updateServer()
             }
-            .setNegativeButton("Cancel") { dialog, _ ->
+            inputPort.doAfterTextChanged {
-                dialog.dismiss()
+                viewModel.pendingPortText = it.toString()
             }
-            .show()
+        }
     }
 
-    private fun updateServer() {
+    override fun onResume() {
+        super.onResume()
+        viewModel.uiModels.collectWith(resumedScope, ::onUiModelUpdated)
+    }
+
+
+    //
+    // Event handlers
+    //
+
+    private fun onResetClicked(unused: View?) {
+        mainActivity?.hideKeyboard()
+        context?.showUpdateServerDialog("Restore Defaults") {
+            resumedScope.launch {
+                binding.groupLoading.visible()
+                binding.loadingView.requestFocus()
+                viewModel.resetServer()
+            }
+        }
+    }
+
+    private fun onUpdateClicked(unused: View?) {
+        mainActivity?.hideKeyboard()
+        context?.showUpdateServerDialog {
+            resumedScope.launch {
+                binding.groupLoading.visible()
+                binding.loadingView.requestFocus()
+                viewModel.submit()
+            }
+        }
+    }
+
+    private fun onUiModelUpdated(uiModel: SettingsViewModel.UiModel) {
+        twig("onUiModelUpdated:::::$uiModel")
+        binding.apply {
+            if (handleCompletion(uiModel)) return@onUiModelUpdated
+
+            // avoid moving the cursor on instances where the change originated from the UI
+            if (inputHost.text.toString() != uiModel.host) inputHost.setText(uiModel.host)
+            if (inputPort.text.toString() != uiModel.portText) inputPort.setText(uiModel.portText)
+
+            buttonReset.isEnabled = uiModel.submitEnabled
+            buttonUpdate.isEnabled = uiModel.submitEnabled && !uiModel.hasError
+
+            uiModel.hostErrorMessage.let { it ->
+                textInputLayoutHost.helperText = it
+                    ?: R.string.settings_host_helper_text.toAppString()
+                textInputLayoutHost.setHelperTextColor(it.toHelperTextColor())
+            }
+            uiModel.portErrorMessage.let { it ->
+                textInputLayoutPort.helperText = it
+                    ?: R.string.settings_port_helper_text.toAppString()
+                textInputLayoutPort.setHelperTextColor(it.toHelperTextColor())
+            }
+        }
+    }
+
+    /**
+     * Handle the exit conditions and return true if we're done here.
+     */
+    private fun handleCompletion(uiModel: SettingsViewModel.UiModel): Boolean {
+        return if (uiModel.changeError != null) {
+            binding.groupLoading.gone()
+            onCriticalError(uiModel.changeError)
+            true
+        } else {
+            if (uiModel.complete) {
+                binding.groupLoading.gone()
+                mainActivity?.safeNavigate(R.id.nav_home)
+                Toast.makeText(ZcashWalletApp.instance, "Successfully changed server!", Toast.LENGTH_SHORT).show()
+                true
+            }
+            false
+        }
+    }
+
+    private fun onCriticalError(error: Throwable) {
+        val details = if (error is LightWalletException.ChangeServerException.StatusException) {
+            error.status.description
+        } else {
+            error.javaClass.simpleName
+        }
+        val message = "An error occured while changing servers. Please verify the info" +
+                " and try again.\n\nError: $details"
+        twig(message)
+        Toast.makeText(ZcashWalletApp.instance, "Failed to change server!", Toast.LENGTH_SHORT).show()
+        context?.showUpdateServerCriticalError(message)
+    }
+
+
+    //
+    // Utilities
+    //
+
+    private fun String?.toHelperTextColor(): ColorStateList {
+        val color =  if (this == null) {
+            R.color.text_light_dimmed
+        } else {
+            R.color.zcashRed
+        }
+       return ColorStateList.valueOf(color.toAppColor())
     }
 }
+

app/src/main/java/cash/z/ecc/android/ui/settings/SettingsViewModel.kt

@@ -1,30 +1,99 @@
 package cash.z.ecc.android.ui.settings
 
 import androidx.lifecycle.ViewModel
-import cash.z.ecc.android.di.module.InitializerModule
+import cash.z.ecc.android.ext.Const
+import cash.z.ecc.android.lockbox.LockBox
 import cash.z.ecc.android.sdk.Synchronizer
 import cash.z.ecc.android.sdk.ext.twig
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.cancellable
 import javax.inject.Inject
+import javax.inject.Named
+import kotlin.properties.Delegates.observable
+import kotlin.reflect.KProperty
 
 class SettingsViewModel @Inject constructor() : ViewModel() {
 
     @Inject
     lateinit var synchronizer: Synchronizer
 
-    fun updateServer(host: String, port: Int) {
+    @Inject
-        // TODO: Update the SecurePrefs here
+    @Named(Const.Name.APP_PREFS)
+    lateinit var prefs: LockBox
+
+    lateinit var uiModels: MutableStateFlow<UiModel>
+
+    private lateinit var initialServer: UiModel
+
+    var pendingHost by observable("", ::onUpdateModel)
+    var pendingPortText by observable("", ::onUpdateModel)
+
+
+    private fun getHost(): String {
+        return prefs[Const.Pref.SERVER_HOST] ?: Const.Default.Server.HOST
     }
 
-    fun getServerHost(): String {
+    private fun getPort(): Int {
-        return InitializerModule.defaultHost
+        return prefs[Const.Pref.SERVER_PORT] ?: Const.Default.Server.PORT
     }
 
-    fun getServerPort(): Int {
+    fun init() {
-        return InitializerModule.defaultPort
+        initialServer = UiModel(getHost(), getPort().toString())
+        uiModels = MutableStateFlow(initialServer)
     }
 
-    override fun onCleared() {
+    suspend fun resetServer() {
-        super.onCleared()
+        UiModel(
-        twig("SettingsViewModel cleared!")
+            Const.Default.Server.HOST,
+            Const.Default.Server.PORT.toString()
+        ).let { default ->
+            uiModels.value = default
+            submit()
+        }
     }
-}
+
+    suspend fun submit() {
+        var error: Throwable? = null
+        val host = uiModels.value.host
+        val port = uiModels.value.portInt
+        synchronizer.changeServer(uiModels.value.host, uiModels.value.portInt) {
+            error = it
+        }
+        if (error == null) {
+            prefs[Const.Pref.SERVER_HOST] = host
+            prefs[Const.Pref.SERVER_PORT] = port
+        }
+        uiModels.value = uiModels.value.copy(changeError = error, complete = true)
+    }
+
+    private fun onUpdateModel(kProperty: KProperty<*>, old: String, new: String) {
+        val pendingPort = pendingPortText.toIntOrNull() ?: -1
+        uiModels.value = UiModel(
+            pendingHost,
+            pendingPortText,
+            pendingHost != initialServer.host || pendingPortText != initialServer.portText,
+            if (!pendingHost.isValidHost()) "Please enter a valid host name or IP" else null,
+            if (pendingPort >= 65535) "Please enter a valid port number below 65535" else null
+        ).also {
+            twig("updated model with $it")
+        }
+    }
+
+    data class UiModel(
+        val host: String = "",
+        val portText: String = "",
+        val submitEnabled: Boolean = false,
+        val hostErrorMessage: String? = null,
+        val portErrorMessage: String? = null,
+        val changeError: Throwable? = null,
+        val complete: Boolean = false
+    ) {
+        val portInt get() = portText.toIntOrNull() ?: -1
+        val hasError get() = hostErrorMessage != null || portErrorMessage != null
+    }
+
+    // we can beef this up later if we want to but this is enough for now
+    private fun String.isValidHost(): Boolean {
+        return !contains("://")
+    }
+}

app/src/main/res/color/selector_secondary_button_activatable.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_enabled="false" android:color="@color/text_light_dimmed" />
+    <item android:state_activated="false" android:color="@color/text_light_dimmed"/>
+
+    <item android:state_activated="true" android:color="@color/text_light" />
+</selector>

app/src/main/res/layout/fragment_settings.xml

@@ -1,13 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.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:layout_height="match_parent"
     android:background="@drawable/background_home">
 
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/guideline_hit_area_top"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        app:layout_constraintGuide_percent="0.04" />
+
+    <View
+        android:id="@+id/hit_area_exit"
+        android:layout_width="68dp"
+        android:layout_height="68dp"
+        android:layout_marginStart="24dp"
+        android:alpha="0.3"
+        android:background="@android:color/transparent"
+        android:elevation="6dp"
+        app:layout_constraintStart_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="@id/guideline_hit_area_top" />
+
     <ImageView
-        android:id="@+id/icon_profile"
+        android:id="@+id/icon_exit"
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:elevation="6dp"
@@ -15,107 +34,128 @@
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintDimensionRatio="H,1:1"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.912"
+        app:layout_constraintHorizontal_bias="0.088"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.064"
+        app:layout_constraintVertical_bias="0.065"
         app:layout_constraintWidth_percent="0.08"
         app:srcCompat="@drawable/ic_cancel" />
 
-    <View
-        android:id="@+id/hit_area_close"
-        android:layout_width="68dp"
-        android:layout_height="68dp"
-        android:layout_marginTop="24dp"
-        android:layout_marginEnd="16dp"
-        android:background="@android:color/transparent"
-        android:elevation="6dp"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
-        android:id="@+id/textView"
+        android:id="@+id/text_title"
-        android:layout_width="wrap_content"
+        android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginStart="32dp"
+        style="@style/TextAppearance.MaterialComponents.Headline6"
-        android:layout_marginTop="92dp"
+        android:autoSizeTextType="uniform"
+        android:maxLines="1"
         android:text="@string/settings_change_lightwalletd_server"
-        android:textAppearance="@style/TextAppearance.MaterialComponents.Body1"
         android:textColor="@color/text_light"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="@id/icon_exit"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@id/hit_area_exit"
+        app:layout_constraintTop_toTopOf="@id/icon_exit" />
 
     <com.google.android.material.textfield.TextInputLayout
-        android:id="@+id/lightwalletd_server"
+        android:id="@+id/text_input_layout_host"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginStart="24dp"
+        android:layout_marginTop="32dp"
-        android:layout_marginTop="16dp"
+        android:hint="@string/settings_server_address"
-        android:layout_marginEnd="24dp"
         app:errorEnabled="true"
+        app:helperText="@string/settings_host_helper_text"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/textView"
+        app:layout_constraintTop_toBottomOf="@+id/text_title"
-        tools:layout_editor_absoluteX="1dp"
+        app:layout_constraintWidth_percent="0.84">
-        tools:layout_editor_absoluteY="133dp">
 
         <com.google.android.material.textfield.TextInputEditText
-            android:id="@+id/input_text_lightwalletd_server"
+            android:id="@+id/input_host"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:hint="@string/settings_server_address" />
+            android:background="@android:color/transparent"
+            android:imeOptions="actionNext"
+            android:maxLength="253"
+            android:singleLine="true"
+            android:textColor="@color/text_light"
+            android:textColorHint="@color/text_light_dimmed" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
     <com.google.android.material.textfield.TextInputLayout
-        android:id="@+id/lightwalletd_port"
+        android:id="@+id/text_input_layout_port"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginStart="24dp"
+        android:layout_marginTop="18dp"
-        android:layout_marginTop="4dp"
+        android:hint="@string/settings_server_port"
-        android:layout_marginEnd="24dp"
         app:errorEnabled="true"
+        app:helperText="@string/settings_port_helper_text"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/lightwalletd_server"
+        app:layout_constraintTop_toBottomOf="@+id/text_input_layout_host"
-        tools:layout_editor_absoluteX="1dp"
+        app:layout_constraintWidth_percent="0.84">
-        tools:layout_editor_absoluteY="133dp">
 
         <com.google.android.material.textfield.TextInputEditText
-            android:id="@+id/input_text_lightwalletd_port"
+            android:id="@+id/input_port"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:hint="@string/settings_server_port"
+            android:background="@android:color/transparent"
             android:inputType="number"
-            android:maxLength="5" />
+            android:maxLength="5"
+            android:textColor="@color/text_light"
+            android:textColorHint="@color/text_light_dimmed" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
-    <com.google.android.material.button.MaterialButton
-        android:id="@+id/button_update"
-        style="@style/Zcash.Button"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="4dp"
-        android:layout_marginStart="24dp"
-        android:layout_marginEnd="16dp"
-        android:text="@string/settings_update"
-        app:layout_constraintEnd_toStartOf="@+id/button_reset"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/lightwalletd_port" />
-
     <com.google.android.material.button.MaterialButton
         android:id="@+id/button_reset"
-        style="@style/Zcash.Button.OutlinedButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginTop="4dp"
+        android:layout_marginEnd="16dp"
-        android:layout_marginStart="16dp"
+        style="@style/Zcash.Button.OutlinedButton"
-        android:layout_marginEnd="24dp"
+        android:text="@string/settings_reset"
-        android:text="@string/settings_reset_to_default_host"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Body1"
-        android:textColor="@color/text_light"
+        android:textColor="@color/selector_secondary_button_activatable"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintEnd_toStartOf="@id/button_update"
-        app:layout_constraintStart_toEndOf="@+id/button_update"
+        app:layout_constraintTop_toTopOf="@id/button_update"
-        app:layout_constraintTop_toBottomOf="@+id/lightwalletd_port" />
+        app:strokeColor="@color/selector_secondary_button_activatable" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/button_update"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        style="@style/Zcash.Button"
+        android:backgroundTint="@color/selector_primary_button_activatable"
+        android:text="@string/settings_update"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Body1"
+        app:layout_constraintEnd_toEndOf="@id/text_input_layout_host"
+        app:layout_constraintTop_toBottomOf="@+id/text_input_layout_port" />
+
+    <View
+        android:id="@+id/loading_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/zcashWhite_24"
+        android:clickable="true"
+        android:focusableInTouchMode="true"
+        android:elevation="8dp" />
+
+    <ProgressBar
+        android:id="@+id/loading_progress"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="12dp"
+        app:layout_constraintTop_toTopOf="@id/button_reset"
+        app:layout_constraintBottom_toBottomOf="@id/button_reset"
+        app:layout_constraintStart_toStartOf="@id/icon_exit"/>
+
+    <androidx.constraintlayout.widget.Group
+        android:id="@+id/group_loading"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:constraint_referenced_ids="loading_progress,loading_view" />
+
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/strings.xml

@@ -49,11 +49,13 @@
     <string name="profile_app_version">v1.0.0-alpha05</string>
 
     <!-- Settings-->
-    <string name="settings_change_lightwalletd_server">Change lightwalletd server:</string>
+    <string name="settings_change_lightwalletd_server">Change Lightwalletd Server</string>
-    <string name="settings_server_address">Server Address</string>
+    <string name="settings_server_address">Host</string>
-    <string name="settings_server_port">Server Port</string>
+    <string name="settings_server_port">Port</string>
     <string name="settings_update">Update</string>
-    <string name="settings_reset_to_default_host">Reset to Default Host</string>
+    <string name="settings_reset">Reset</string>
+    <string name="settings_port_helper_text">Enter a valid port number</string>
+    <string name="settings_host_helper_text">Enter a valid host name or IP address</string>
 
     <!-- Dialogs -->
     <string name="dialog_not_again">Don\'t show me again</string>