Adds reset avatar feature.

app/src/main/java/chat/rocket/android/profile/presentation/ProfilePresenter.kt

@@ -15,6 +15,7 @@ import chat.rocket.android.util.retryIO
 import chat.rocket.common.RocketChatException
 import chat.rocket.common.util.ifNull
 import chat.rocket.core.RocketChatClient
+import chat.rocket.core.internal.rest.resetAvatar
 import chat.rocket.core.internal.rest.setAvatar
 import chat.rocket.core.internal.rest.updateProfile
 import java.util.*
@@ -128,4 +129,22 @@ class ProfilePresenter @Inject constructor(
             }
         }
     }
+
+    fun resetAvatar() {
+        launchUI(strategy) {
+            view.showLoading()
+            try {
+                retryIO { client.resetAvatar(myselfId) }
+                view.reloadUserAvatar(serverUrl.avatarUrl(myselfUsername))
+            } catch (exception: RocketChatException) {
+                exception.message?.let {
+                    view.showMessage(it)
+                }.ifNull {
+                    view.showGenericErrorMessage()
+                }
+            } finally {
+                view.hideLoading()
+            }
+        }
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/profile/ui/ProfileFragment.kt

@@ -183,6 +183,11 @@ class ProfileFragment : Fragment(), ProfileView, ActionMode.Callback {
             dispatchTakePicture(REQUEST_CODE_FOR_PERFORM_CAMERA)
             hideUpdateAvatarOptions()
         }
+
+        button_reset_avatar.setOnClickListener {
+            hideUpdateAvatarOptions()
+            presenter.resetAvatar()
+        }
     }
 
     private fun showUpdateAvatarOptions() {

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

@@ -25,4 +25,14 @@
         android:gravity="start|center"
         android:text="@string/action_take_photo" />
 
+    <Button
+        android:id="@+id/button_reset_avatar"
+        style="?android:attr/borderlessButtonStyle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:drawableStart="@drawable/ic_close_black_24dp"
+        android:drawablePadding="20dp"
+        android:gravity="start|center"
+        android:text="@string/action_reset_avatar" />
+
 </LinearLayout>
\ No newline at end of file

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

@@ -40,7 +40,7 @@
     <string name="action_save_to_gallery">Guardar en la galería</string>
     <string name="action_select_photo_from_gallery">Select photo from gallery</string> <!-- TODO Add translation -->
     <string name="action_take_photo">Select photo from gallery</string> <!-- TODO Add translation -->
-
+    <string name="action_reset_avatar">Reset avatar</string> <!-- TODO Add translation -->
 
     <!-- Settings List -->
     <string-array name="settings_actions">

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

@@ -42,6 +42,7 @@
     <string name="action_save_to_gallery">Save to gallery</string> <!-- TODO Add translation -->
     <string name="action_select_photo_from_gallery">Select photo from gallery</string> <!-- TODO Add translation -->
     <string name="action_take_photo">Select photo from gallery</string> <!-- TODO Add translation -->
+    <string name="action_reset_avatar">Reset avatar</string> <!-- TODO Add translation -->
 
     <!-- Settings List -->
     <string-array name="settings_actions">

app/src/main/res/values-hi-rIN/strings.xml

@@ -41,6 +41,7 @@
     <string name="action_drawing">चित्रकारी</string>
     <string name="action_select_photo_from_gallery">Select photo from gallery</string> <!-- TODO Add translation -->
     <string name="action_take_photo">Select photo from gallery</string> <!-- TODO Add translation -->
+    <string name="action_reset_avatar">Reset avatar</string> <!-- TODO Add translation -->
 
     <!-- Settings List -->
     <string-array name="settings_actions">

app/src/main/res/values-pt-rBR/strings.xml

@@ -41,6 +41,7 @@
     <string name="action_save_to_gallery">Salvar na galeria</string>
     <string name="action_select_photo_from_gallery">Escolher foto da galeria</string>
     <string name="action_take_photo">Tirar foto</string>
+    <string name="action_reset_avatar">Resetar avatar</string>
 
     <!-- Settings List -->
     <string-array name="settings_actions">

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

@@ -41,6 +41,7 @@
     <string name="action_save_to_gallery">Сохранить в галерею</string>
     <string name="action_select_photo_from_gallery">Select photo from gallery</string> <!-- TODO Add translation -->
     <string name="action_take_photo">Select photo from gallery</string> <!-- TODO Add translation -->
+    <string name="action_reset_avatar">Reset avatar</string> <!-- TODO Add translation -->
 
     <!-- Settings List -->
     <string-array name="settings_actions">

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

@@ -42,6 +42,7 @@
     <string name="action_save_to_gallery">Save to gallery</string>
     <string name="action_select_photo_from_gallery">Select photo from gallery</string>
     <string name="action_take_photo">Take photo</string>
+    <string name="action_reset_avatar">Reset avatar</string>
 
     <!-- Settings List -->
     <string-array name="settings_actions">