Login screens: setup autofill

vector/build.gradle

@@ -225,6 +225,7 @@ dependencies {
     def glide_version = '4.10.0'
     def moshi_version = '1.8.0'
     def daggerVersion = '2.24'
+    def autofill_version = "1.0.0-rc01"
 
     implementation project(":matrix-sdk-android")
     implementation project(":matrix-sdk-android-rx")
@@ -290,6 +291,7 @@ dependencies {
     implementation "io.noties.markwon:html:$markwon_version"
     implementation 'me.saket:better-link-movement-method:2.2.0'
     implementation 'com.google.android:flexbox:1.1.1'
+    implementation "androidx.autofill:autofill:$autofill_version"
 
     // Passphrase strength helper
     implementation 'com.nulab-inc:zxcvbn:1.2.7'

vector/src/main/java/im/vector/riotx/features/login/LoginFragment.kt

@@ -16,8 +16,10 @@
 
 package im.vector.riotx.features.login
 
+import android.os.Build
 import android.os.Bundle
 import android.view.View
+import androidx.autofill.HintConstants
 import androidx.core.view.isVisible
 import butterknife.OnClick
 import com.airbnb.mvrx.Fail
@@ -45,7 +47,6 @@ class LoginFragment @Inject constructor(
         private val errorFormatter: ErrorFormatter
 ) : AbstractLoginFragment() {
 
-    // TODO Move to viewState?
     private var passwordShown = false
 
     override fun getLayoutResId() = R.layout.fragment_login
@@ -54,11 +55,28 @@ class LoginFragment @Inject constructor(
         super.onViewCreated(view, savedInstanceState)
 
         setupUi()
+        setupAutoFill()
         setupSubmitButton()
         setupPasswordReveal()
         setupButtons()
     }
 
+    private fun setupAutoFill() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            when (loginViewModel.signMode) {
+                SignMode.Unknown -> error("developer error")
+                SignMode.SignUp  -> {
+                    loginField.setAutofillHints(HintConstants.AUTOFILL_HINT_NEW_USERNAME)
+                    passwordField.setAutofillHints(HintConstants.AUTOFILL_HINT_NEW_PASSWORD)
+                }
+                SignMode.SignIn  -> {
+                    loginField.setAutofillHints(HintConstants.AUTOFILL_HINT_USERNAME)
+                    passwordField.setAutofillHints(HintConstants.AUTOFILL_HINT_PASSWORD)
+                }
+            }
+        }
+    }
+
     @OnClick(R.id.loginSubmit)
     fun submit() {
         val login = loginField.text?.trim().toString()

vector/src/main/java/im/vector/riotx/features/login/LoginGenericTextInputFormFragment.kt

@@ -16,10 +16,12 @@
 
 package im.vector.riotx.features.login
 
+import android.os.Build
 import android.os.Bundle
 import android.os.Parcelable
 import android.text.InputType
 import android.view.View
+import androidx.autofill.HintConstants
 import androidx.core.view.isVisible
 import butterknife.OnClick
 import com.airbnb.mvrx.args
@@ -62,6 +64,18 @@ class LoginGenericTextInputFormFragment @Inject constructor(private val errorFor
         setupUi()
         setupSubmitButton()
         setupTil()
+        setupAutoFill()
+    }
+
+    private fun setupAutoFill() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            when (params.mode) {
+                TextInputFormFragmentMode.SetEmail      -> loginGenericTextInputFormTextInput.setAutofillHints(HintConstants.AUTOFILL_HINT_EMAIL_ADDRESS)
+                // TODO Phone number without country code?
+                TextInputFormFragmentMode.SetMsisdn     -> loginGenericTextInputFormTextInput.setAutofillHints(HintConstants.AUTOFILL_HINT_PHONE_NUMBER)
+                TextInputFormFragmentMode.ConfirmMsisdn -> loginGenericTextInputFormTextInput.setAutofillHints(HintConstants.AUTOFILL_HINT_SMS_OTP)
+            }
+        }
     }
 
     private fun setupTil() {