Merge branch 'develop-2.x' into project/sdk-changes

app/src/main/AndroidManifest.xml

@@ -20,7 +20,9 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
+        android:networkSecurityConfig="@xml/network_security_config">
         android:supportsRtl="true">
+
         <activity
             android:name=".authentication.ui.AuthenticationActivity"
             android:configChanges="orientation"

app/src/main/java/chat/rocket/android/authentication/login/ui/LoginFragment.kt

@@ -86,85 +86,114 @@ class LoginFragment : Fragment(), LoginView {
     }
 
     private fun tintEditTextDrawableStart() {
-        activity?.apply {
-            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, this)
-            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, this)
+        ui {
+            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, it)
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, it)
 
             val drawables = arrayOf(personDrawable, lockDrawable)
             DrawableHelper.wrapDrawables(drawables)
-            DrawableHelper.tintDrawables(drawables, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.tintDrawables(drawables, it, R.color.colorDrawableTintGrey)
             DrawableHelper.compoundDrawables(arrayOf(text_username_or_email, text_password), drawables)
         }
     }
 
     override fun showLoading() {
+        ui {
             view_loading.setVisible(true)
         }
+    }
 
     override fun hideLoading() {
+        ui {
             view_loading.setVisible(false)
         }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() {
         showMessage(R.string.msg_generic_error)
     }
 
     override fun showFormView() {
+        ui {
             text_username_or_email.setVisible(true)
             text_password.setVisible(true)
         }
+    }
 
     override fun hideFormView() {
+        ui {
             text_username_or_email.setVisible(false)
             text_password.setVisible(false)
         }
+    }
 
     override fun setupLoginButtonListener() {
+        ui {
             button_log_in.setOnClickListener {
-            presenter.authenticateWithUserAndPassword(text_username_or_email.textContent, text_password.textContent)
+                presenter.authenticateWithUserAndPassword(text_username_or_email.textContent,
+                        text_password.textContent)
+            }
         }
     }
 
     override fun enableUserInput() {
+        ui {
             button_log_in.isEnabled = true
             text_username_or_email.isEnabled = true
             text_password.isEnabled = true
         }
+    }
 
     override fun disableUserInput() {
+        ui {
             button_log_in.isEnabled = false
             text_username_or_email.isEnabled = false
             text_password.isEnabled = false
         }
+    }
 
     override fun showCasButton() {
+        ui {
             button_cas.setVisible(true)
         }
+    }
 
     override fun hideCasButton() {
+        ui {
             button_cas.setVisible(false)
         }
+    }
 
     override fun setupCasButtonListener(casUrl: String, casToken: String) {
+        ui { activity ->
             button_cas.setOnClickListener {
-            startActivityForResult(context?.casWebViewIntent(casUrl, casToken), REQUEST_CODE_FOR_CAS)
-            activity?.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+                startActivityForResult(activity.casWebViewIntent(casUrl, casToken),
+                        REQUEST_CODE_FOR_CAS)
+                activity.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+            }
         }
     }
 
     override fun showSignUpView() {
+        ui {
             text_new_to_rocket_chat.setVisible(true)
         }
+    }
 
     override fun setupSignUpView() {
+        ui {
             val signUp = getString(R.string.title_sign_up)
             val newToRocketChat = String.format(getString(R.string.msg_new_user), signUp)
 
@@ -176,88 +205,122 @@ class LoginFragment : Fragment(), LoginView {
 
             TextHelper.addLink(text_new_to_rocket_chat, arrayOf(signUp), arrayOf(signUpListener))
         }
+    }
 
     override fun hideSignUpView() {
+        ui {
             text_new_to_rocket_chat.setVisible(false)
         }
+    }
 
     override fun enableOauthView() {
+        ui {
             isOauthViewEnable = true
             showThreeSocialAccountsMethods()
             social_accounts_container.setVisible(true)
         }
+    }
 
     override fun disableOauthView() {
+        ui {
             isOauthViewEnable = false
             social_accounts_container.setVisible(false)
         }
+    }
 
     override fun showLoginButton() {
+        ui {
             button_log_in.setVisible(true)
         }
+    }
 
     override fun hideLoginButton() {
+        ui {
             button_log_in.setVisible(false)
         }
+    }
 
     override fun enableLoginByFacebook() {
+        ui {
             button_facebook.isClickable = true
         }
+    }
 
     override fun enableLoginByGithub() {
+        ui {
             button_github.isClickable = true
         }
+    }
 
     override fun setupGithubButtonListener(githubUrl: String, state: String) {
+        ui { activity ->
             button_github.setOnClickListener {
-            startActivityForResult(context?.oauthWebViewIntent(githubUrl, state), REQUEST_CODE_FOR_OAUTH)
-            activity?.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+                startActivityForResult(activity.oauthWebViewIntent(githubUrl, state), REQUEST_CODE_FOR_OAUTH)
+                activity.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+            }
         }
     }
 
     override fun enableLoginByGoogle() {
+        ui {
             button_google.isClickable = true
         }
+    }
 
     // TODO: Use custom tabs instead of web view. See https://github.com/RocketChat/Rocket.Chat.Android/issues/968
     override fun setupGoogleButtonListener(googleUrl: String, state: String) {
+        ui { activity ->
             button_google.setOnClickListener {
-            startActivityForResult(context?.oauthWebViewIntent(googleUrl, state), REQUEST_CODE_FOR_OAUTH)
-            activity?.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+                startActivityForResult(activity.oauthWebViewIntent(googleUrl, state), REQUEST_CODE_FOR_OAUTH)
+                activity.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+            }
         }
     }
 
     override fun enableLoginByLinkedin() {
+        ui {
             button_linkedin.isClickable = true
         }
+    }
 
     override fun setupLinkedinButtonListener(linkedinUrl: String, state: String) {
+        ui { activity ->
             button_linkedin.setOnClickListener {
-            startActivityForResult(context?.oauthWebViewIntent(linkedinUrl, state), REQUEST_CODE_FOR_OAUTH)
-            activity?.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+                startActivityForResult(activity.oauthWebViewIntent(linkedinUrl, state), REQUEST_CODE_FOR_OAUTH)
+                activity.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+            }
         }
     }
 
     override fun enableLoginByMeteor() {
+        ui {
             button_meteor.isClickable = true
         }
+    }
 
     override fun enableLoginByTwitter() {
+        ui {
             button_twitter.isClickable = true
         }
+    }
 
     override fun enableLoginByGitlab() {
+        ui {
             button_gitlab.isClickable = true
         }
+    }
 
     override fun setupGitlabButtonListener(gitlabUrl: String, state: String) {
+        ui { activity ->
             button_gitlab.setOnClickListener {
-            startActivityForResult(context?.oauthWebViewIntent(gitlabUrl, state), REQUEST_CODE_FOR_OAUTH)
-            activity?.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+                startActivityForResult(activity.oauthWebViewIntent(gitlabUrl, state), REQUEST_CODE_FOR_OAUTH)
+                activity.overridePendingTransition(R.anim.slide_up, R.anim.hold)
+            }
         }
     }
 
     override fun setupFabListener() {
+        ui {
             button_fab.setVisible(true)
             button_fab.setOnClickListener({
                 button_fab.hide()
@@ -265,6 +328,7 @@ class LoginFragment : Fragment(), LoginView {
                 scrollToBottom()
             })
         }
+    }
 
     override fun setupGlobalListener() {
         // We need to setup the layout to hide and show the oauth interface when the soft keyboard is shown
@@ -276,19 +340,23 @@ class LoginFragment : Fragment(), LoginView {
     }
 
     override fun alertWrongUsernameOrEmail() {
+        ui {
             vibrateSmartPhone()
             text_username_or_email.shake()
             text_username_or_email.requestFocus()
         }
+    }
 
     override fun alertWrongPassword() {
+        ui {
             vibrateSmartPhone()
             text_password.shake()
             text_password.requestFocus()
         }
+    }
 
     override fun alertNotRecommendedVersion() {
-        context?.let {
+        ui {
             AlertDialog.Builder(it)
                     .setMessage(getString(R.string.msg_ver_not_recommended, BuildConfig.RECOMMENDED_SERVER_VERSION))
                     .setPositiveButton(R.string.msg_ok, null)
@@ -298,7 +366,7 @@ class LoginFragment : Fragment(), LoginView {
     }
 
     override fun blockAndAlertNotRequiredVersion() {
-        context?.let {
+        ui {
             AlertDialog.Builder(it)
                     .setMessage(getString(R.string.msg_ver_not_minimum, BuildConfig.REQUIRED_SERVER_VERSION))
                     .setOnDismissListener { activity?.onBackPressed() }
@@ -313,14 +381,14 @@ class LoginFragment : Fragment(), LoginView {
             (0..social_accounts_container.childCount)
                 .mapNotNull { social_accounts_container.getChildAt(it) as? ImageButton }
                 .filter { it.isClickable }
-                .forEach { it.setVisible(true)}
+                .forEach { ui { it.setVisible(true) }}
         }, 1000)
     }
 
     // Scrolling to the bottom of the screen.
     private fun scrollToBottom() {
         scroll_view.postDelayed({
-            scroll_view.fullScroll(ScrollView.FOCUS_DOWN)
+            ui { scroll_view.fullScroll(ScrollView.FOCUS_DOWN) }
         }, 1250)
     }
 
@@ -350,13 +418,13 @@ class LoginFragment : Fragment(), LoginView {
             .forEach { it.setVisible(true) }
     }
 
-    fun showOauthView() {
+    private fun showOauthView() {
         if (isOauthViewEnable) {
             social_accounts_container.setVisible(true)
         }
     }
 
-    fun hideOauthView() {
+    private fun hideOauthView() {
         if (isOauthViewEnable) {
             social_accounts_container.setVisible(false)
             button_fab.setVisible(false)

app/src/main/java/chat/rocket/android/authentication/registerusername/ui/RegisterUsernameFragment.kt

@@ -59,37 +59,47 @@ class RegisterUsernameFragment : Fragment(), RegisterUsernameView {
     }
 
     override fun alertBlankUsername() {
+        ui {
             vibrateSmartPhone()
             text_username.shake()
         }
+    }
 
     override fun showLoading() {
+        ui {
             disableUserInput()
             view_loading.setVisible(true)
         }
+    }
 
     override fun hideLoading() {
+        ui {
             view_loading.setVisible(false)
             enableUserInput()
         }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() {
         showMessage(getString(R.string.msg_generic_error))
     }
 
     private fun tintEditTextDrawableStart() {
-        activity?.apply {
-            val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, this)
+        ui {
+            val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, it)
             DrawableHelper.wrapDrawable(atDrawable)
-            DrawableHelper.tintDrawable(atDrawable, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.tintDrawable(atDrawable, it, R.color.colorDrawableTintGrey)
             DrawableHelper.compoundDrawable(text_username, atDrawable)
         }
     }

app/src/main/java/chat/rocket/android/authentication/server/ui/ServerFragment.kt

@@ -47,22 +47,30 @@ class ServerFragment : Fragment(), ServerView {
     override fun showInvalidServerUrlMessage() = showMessage(getString(R.string.msg_invalid_server_url))
 
     override fun showLoading() {
+        ui {
             enableUserInput(false)
             view_loading.setVisible(true)
         }
+    }
 
     override fun hideLoading() {
+        ui {
             view_loading.setVisible(false)
             enableUserInput(true)
         }
+    }
 
     override fun showMessage(resId: Int){
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() {
         showMessage(getString(R.string.msg_generic_error))

app/src/main/java/chat/rocket/android/authentication/signup/ui/SignupFragment.kt

@@ -25,7 +25,7 @@ class SignupFragment : Fragment(), SignupView {
         } else {
             bottom_container.apply {
                 postDelayed({
-                    setVisible(true)
+                    ui { setVisible(true) }
                 }, 3)
             }
         }
@@ -64,61 +64,77 @@ class SignupFragment : Fragment(), SignupView {
     }
 
     override fun alertBlankName() {
+        ui {
             vibrateSmartPhone()
             text_name.shake()
             text_name.requestFocus()
         }
+    }
 
     override fun alertBlankUsername() {
+        ui {
             vibrateSmartPhone()
             text_username.shake()
             text_username.requestFocus()
         }
+    }
 
     override fun alertEmptyPassword() {
+        ui {
             vibrateSmartPhone()
             text_password.shake()
             text_password.requestFocus()
         }
+    }
 
     override fun alertBlankEmail() {
+        ui {
             vibrateSmartPhone()
             text_email.shake()
             text_email.requestFocus()
         }
+    }
 
     override fun showLoading() {
+        ui {
             enableUserInput(false)
             view_loading.setVisible(true)
         }
+    }
 
     override fun hideLoading() {
+        ui {
             view_loading.setVisible(false)
             enableUserInput(true)
         }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() {
         showMessage(getString(R.string.msg_generic_error))
     }
 
     private fun tintEditTextDrawableStart() {
-        activity?.apply {
-            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, this)
-            val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, this)
-            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, this)
-            val emailDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_email_black_24dp, this)
+        ui {
+            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, it)
+            val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, it)
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, it)
+            val emailDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_email_black_24dp, it)
 
             val drawables = arrayOf(personDrawable, atDrawable, lockDrawable, emailDrawable)
             DrawableHelper.wrapDrawables(drawables)
-            DrawableHelper.tintDrawables(drawables, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.tintDrawables(drawables, it, R.color.colorDrawableTintGrey)
             DrawableHelper.compoundDrawables(arrayOf(text_name, text_username, text_password, text_email), drawables)
         }
     }

app/src/main/java/chat/rocket/android/authentication/twofactor/ui/TwoFAFragment.kt

@@ -63,39 +63,49 @@ class TwoFAFragment : Fragment(), TwoFAView {
     }
 
     override fun alertBlankTwoFactorAuthenticationCode() {
+        ui {
             vibrateSmartPhone()
             text_two_factor_auth.shake()
         }
+    }
 
     override fun alertInvalidTwoFactorAuthenticationCode() {
         showMessage(getString(R.string.msg_invalid_2fa_code))
     }
 
     override fun showLoading() {
+        ui {
             enableUserInput(false)
             view_loading.setVisible(true)
         }
+    }
 
     override fun hideLoading() {
+        ui {
             view_loading.setVisible(false)
             enableUserInput(true)
         }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
 
     private fun tintEditTextDrawableStart() {
-        activity?.apply {
-            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, this)
+        ui {
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, it)
             DrawableHelper.wrapDrawable(lockDrawable)
-            DrawableHelper.tintDrawable(lockDrawable, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.tintDrawable(lockDrawable, it, R.color.colorDrawableTintGrey)
             DrawableHelper.compoundDrawable(text_two_factor_auth, lockDrawable)
         }
     }

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

@@ -18,6 +18,7 @@ import android.support.v7.widget.DefaultItemAnimator
 import android.support.v7.widget.LinearLayoutManager
 import android.support.v7.widget.RecyclerView
 import android.view.*
+import androidx.core.content.systemService
 import chat.rocket.android.R
 import chat.rocket.android.chatroom.adapter.*
 import chat.rocket.android.chatroom.presentation.ChatRoomPresenter
@@ -182,6 +183,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun showMessages(dataSet: List<BaseViewModel<*>>) {
+        ui {
             // track the message sent immediately after the current message
             var prevMessageViewModel: MessageViewModel? = null
 
@@ -203,7 +205,6 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
                 }
             }
 
-        activity?.apply {
             if (recycler_view.adapter == null) {
                 adapter = ChatRoomAdapter(chatRoomType, chatRoomName, presenter,
                         reactionListener = this@ChatRoomFragment)
@@ -281,6 +282,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun sendMessage(text: String) {
+        ui {
             if (!text.isBlank()) {
                 if (!text.startsWith("/")) {
                     presenter.sendMessage(chatRoomId, text, editingMessageId)
@@ -289,6 +291,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
                 }
             }
         }
+    }
 
     override fun uploadFile(uri: Uri) {
         // TODO Just leaving a blank message that comes with the file for now. In the future lets add the possibility to add a message with the file to be uploaded.
@@ -300,43 +303,55 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun showNewMessage(message: List<BaseViewModel<*>>) {
+        ui {
             adapter.prependData(message)
             recycler_view.scrollToPosition(0)
             verticalScrollOffset.set(0)
         }
+    }
 
     override fun disableSendMessageButton() {
+        ui {
             button_send.isEnabled = false
         }
+    }
 
     override fun enableSendMessageButton(sendFailed: Boolean) {
+        ui {
             button_send.isEnabled = true
             text_message.isEnabled = true
             if (!sendFailed) {
                 clearMessageComposition()
             }
         }
+    }
 
     override fun clearMessageComposition() {
+        ui {
             citation = null
             editingMessageId = null
             text_message.textContent = ""
             actionSnackbar.dismiss()
         }
+    }
 
     override fun dispatchUpdateMessage(index: Int, message: List<BaseViewModel<*>>) {
+        ui {
             adapter.updateItem(message.last())
             if (message.size > 1) {
                 adapter.prependData(listOf(message.first()))
             }
         }
+    }
 
     override fun dispatchDeleteMessage(msgId: String) {
+        ui {
             adapter.removeItem(msgId)
         }
+    }
 
     override fun showReplyingAction(username: String, replyMarkdown: String, quotedMessage: String) {
-        activity?.apply {
+        ui {
             citation = replyMarkdown
             actionSnackbar.title = username
             actionSnackbar.text = quotedMessage
@@ -351,41 +366,55 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         }
     }
 
-    override fun showLoading() = view_loading.setVisible(true)
+    override fun showLoading() {
+        ui { view_loading.setVisible(true) }
+    }
 
-    override fun hideLoading() = view_loading.setVisible(false)
+    override fun hideLoading() {
+        ui { view_loading.setVisible(false) }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
 
     override fun populatePeopleSuggestions(members: List<PeopleSuggestionViewModel>) {
+        ui {
             suggestions_view.addItems("@", members)
         }
+    }
 
     override fun populateRoomSuggestions(chatRooms: List<ChatRoomSuggestionViewModel>) {
+        ui {
             suggestions_view.addItems("#", chatRooms)
         }
+    }
 
     override fun populateCommandSuggestions(commands: List<CommandSuggestionViewModel>) {
+        ui {
             suggestions_view.addItems("/", commands)
         }
+    }
 
     override fun copyToClipboard(message: String) {
-        activity?.apply {
-            val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+        ui {
+            val clipboard: ClipboardManager  = it.systemService()
             clipboard.primaryClip = ClipData.newPlainText("", message)
         }
     }
 
     override fun showEditingAction(roomId: String, messageId: String, text: String) {
-        activity?.apply {
+        ui {
             actionSnackbar.title = getString(R.string.action_title_editing)
             actionSnackbar.text = text
             actionSnackbar.show()
@@ -421,7 +450,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun showReactionsPopup(messageId: String) {
-        context?.let {
+        ui {
             val emojiPickerPopup = EmojiPickerPopup(it)
             emojiPickerPopup.listener = object : EmojiListenerAdapter() {
                 override fun onEmojiAdded(emoji: Emoji) {
@@ -434,11 +463,11 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
 
     private fun setReactionButtonIcon(@DrawableRes drawableId: Int) {
         button_add_reaction.setImageResource(drawableId)
-        button_add_reaction.setTag(drawableId)
+        button_add_reaction.tag = drawableId
     }
 
     override fun showFileSelection(filter: Array<String>) {
-        activity?.let {
+        ui {
             if (ContextCompat.checkSelfPermission(it, Manifest.permission.READ_EXTERNAL_STORAGE)
                     != PackageManager.PERMISSION_GRANTED) {
                 ActivityCompat.requestPermissions(it,
@@ -458,7 +487,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
             1 -> {
                 if (!(grantResults.isNotEmpty() && grantResults.first() == PackageManager.PERMISSION_GRANTED)) {
                     handler.postDelayed({
-                        hideAttachmentOptions()
+                        ui { hideAttachmentOptions() }
                     }, 400)
                 }
             }
@@ -470,7 +499,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun showConnectionState(state: State) {
-        activity?.apply {
+        ui {
             connection_status_text.fadeIn()
             handler.removeCallbacks(dismissStatus)
             when (state) {
@@ -488,11 +517,13 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     override fun onJoined() {
+        ui {
             input_container.setVisible(true)
             button_join_chat.setVisible(false)
             isSubscribed = true
             setupMessageComposer()
         }
+    }
 
     private val dismissStatus = {
         connection_status_text.fadeOut()

app/src/main/java/chat/rocket/android/chatroom/ui/PinnedMessagesFragment.kt

@@ -16,6 +16,7 @@ import chat.rocket.android.chatroom.viewmodel.BaseViewModel
 import chat.rocket.android.helper.EndlessRecyclerViewScrollListener
 import chat.rocket.android.util.extensions.setVisible
 import chat.rocket.android.util.extensions.showToast
+import chat.rocket.android.util.extensions.ui
 import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_pinned_messages.*
 import javax.inject.Inject
@@ -62,22 +63,30 @@ class PinnedMessagesFragment : Fragment(), PinnedMessagesView {
         presenter.loadPinnedMessages(chatRoomId)
     }
 
-    override fun showLoading() = view_loading.setVisible(true)
+    override fun showLoading() {
+        ui { view_loading.setVisible(true) }
+    }
 
-    override fun hideLoading() = view_loading.setVisible(false)
+    override fun hideLoading() {
+        ui { view_loading.setVisible(false) }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
 
     override fun showPinnedMessages(pinnedMessages: List<BaseViewModel<*>>) {
-        activity?.apply {
+        ui {
             if (recycler_view_pinned.adapter == null) {
                 // TODO - add a better constructor for this case...
                 adapter = ChatRoomAdapter(chatRoomType, chatRoomName, null, false)
@@ -92,9 +101,22 @@ class PinnedMessagesFragment : Fragment(), PinnedMessagesView {
                         }
                     })
                 }
+                togglePinView(pinnedMessages.size)
             }
 
             adapter.appendData(pinnedMessages)
         }
     }
+
+    private fun togglePinView(size: Int) {
+        if (size == 0){
+            iv_pin_icon.setVisible(true)
+            tv_pin_title.setVisible(true)
+            tv_pin_description.setVisible(true)
+        }else{
+            iv_pin_icon.setVisible(false)
+            tv_pin_title.setVisible(false)
+            tv_pin_description.setVisible(false)
+        }
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/chatrooms/presentation/ChatRoomsPresenter.kt

@@ -270,6 +270,7 @@ class ChatRoomsPresenter @Inject constructor(private val view: ChatRoomsView,
     // TODO - Temporary stuff, remove when adding DB support
     private suspend fun subscribeRoomUpdates() {
         manager.addStatusChannel(stateChannel)
+        view.showConnectionState(client.state)
         manager.addRoomsAndSubscriptionsChannel(subscriptionsChannel)
         launch(CommonPool + strategy.jobs) {
             for (message in subscriptionsChannel) {

app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsAdapter.kt

@@ -24,7 +24,6 @@ import chat.rocket.android.util.extensions.textContent
 import chat.rocket.common.model.RoomType
 import chat.rocket.core.model.ChatRoom
 import com.facebook.drawee.view.SimpleDraweeView
-import kotlinx.android.synthetic.main.avatar.view.*
 import kotlinx.android.synthetic.main.item_chat.view.*
 import kotlinx.android.synthetic.main.unread_messages_badge.view.*
 

app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsFragment.kt

@@ -31,8 +31,10 @@ import chat.rocket.core.model.ChatRoom
 import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_chat_rooms.*
 import kotlinx.coroutines.experimental.Job
+import kotlinx.coroutines.experimental.NonCancellable.isActive
 import kotlinx.coroutines.experimental.android.UI
 import kotlinx.coroutines.experimental.launch
+import timber.log.Timber
 import javax.inject.Inject
 
 
@@ -99,8 +101,8 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
     }
 
 
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        when (item?.itemId) {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
             R.id.action_sort -> {
                 val dialogLayout = layoutInflater.inflate(R.layout.chatroom_sort_dialog, null)
                 val sortType = SharedPreferenceHelper.getInt(Constants.CHATROOM_SORT_TYPE_KEY, ChatRoomsSortOrder.ACTIVITY)
@@ -152,9 +154,8 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
     }
 
     override suspend fun updateChatRooms(newDataSet: List<ChatRoom>) {
-        activity?.apply {
         listJob?.cancel()
-            listJob = launch(UI) {
+        listJob = ui {
             val adapter = recycler_view.adapter as SimpleSectionedRecyclerViewAdapter
             // FIXME https://fabric.io/rocketchat3/android/apps/chat.rocket.android/issues/5ac2916c36c7b235275ccccf
             // TODO - fix this bug to re-enable DiffUtil
@@ -172,30 +173,38 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
             }
         }
     }
-    }
 
-    override fun showNoChatRoomsToDisplay() = text_no_data_to_display.setVisible(true)
+    override fun showNoChatRoomsToDisplay() {
+        ui { text_no_data_to_display.setVisible(true) }
+    }
 
-    override fun showLoading() = view_loading.setVisible(true)
+    override fun showLoading(){
+        ui { view_loading.setVisible(true) }
+    }
 
     override fun hideLoading() {
-        if (view_loading != null) {
+        ui {
             view_loading.setVisible(false)
         }
     }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
 
     override fun showConnectionState(state: State) {
-        activity?.apply {
+        Timber.d("Got new state: $state")
+        ui {
             connection_status_text.fadeIn()
             handler.removeCallbacks(dismissStatus)
             when (state) {
@@ -219,22 +228,25 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
     }
 
     private fun setupToolbar() {
-        (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.title_chats)
+        (activity as AppCompatActivity?)?.supportActionBar?.title = getString(R.string.title_chats)
     }
 
     private fun setupRecyclerView() {
-        activity?.apply {
-            recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
-            recycler_view.addItemDecoration(DividerItemDecoration(this,
+        ui {
+            recycler_view.layoutManager = LinearLayoutManager(it, LinearLayoutManager.VERTICAL, false)
+            recycler_view.addItemDecoration(DividerItemDecoration(it,
                     resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_start),
                     resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_end)))
             recycler_view.itemAnimator = DefaultItemAnimator()
             // TODO - use a ViewModel Mapper instead of using settings on the adapter
 
-            val baseAdapter = ChatRoomsAdapter(this,
-                    settingsRepository.get(serverInteractor.get()!!), localRepository) { chatRoom -> presenter.loadChatRoom(chatRoom) }
+            val baseAdapter = ChatRoomsAdapter(it,
+                    settingsRepository.get(serverInteractor.get()!!), localRepository) {
+                chatRoom -> presenter.loadChatRoom(chatRoom)
+            }
 
-            sectionedAdapter = SimpleSectionedRecyclerViewAdapter(this, R.layout.item_chatroom_header, R.id.text_chatroom_header, baseAdapter!!)
+            sectionedAdapter = SimpleSectionedRecyclerViewAdapter(it,
+                    R.layout.item_chatroom_header, R.id.text_chatroom_header, baseAdapter)
             recycler_view.adapter = sectionedAdapter
         }
     }

app/src/main/java/chat/rocket/android/members/presentation/MembersNavigator.kt

 package chat.rocket.android.members.presentation
 
 import chat.rocket.android.chatroom.ui.ChatRoomActivity
-import chat.rocket.android.member.ui.newInstance
+import chat.rocket.android.members.ui.newInstance
 
 class MembersNavigator(internal val activity: ChatRoomActivity) {
 

app/src/main/java/chat/rocket/android/member/ui/MemberBottomSheetFragment.kt → app/src/main/java/chat/rocket/android/members/ui/MemberBottomSheetFragment.kt

-package chat.rocket.android.member.ui
+package chat.rocket.android.members.ui
 
 import android.os.Bundle
 import android.support.design.widget.BottomSheetDialogFragment

app/src/main/java/chat/rocket/android/members/ui/MembersFragment.kt

@@ -19,6 +19,7 @@ import chat.rocket.android.members.viewmodel.MemberViewModel
 import chat.rocket.android.util.extensions.inflate
 import chat.rocket.android.util.extensions.setVisible
 import chat.rocket.android.util.extensions.showToast
+import chat.rocket.android.util.extensions.ui
 import chat.rocket.android.widget.DividerItemDecoration
 import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_members.*
@@ -70,7 +71,7 @@ class MembersFragment : Fragment(), MembersView {
     }
 
     override fun showMembers(dataSet: List<MemberViewModel>, total: Long) {
-        activity?.apply {
+        ui {
             setupToolbar(total)
             if (adapter.itemCount == 0) {
                 adapter.prependData(dataSet)
@@ -84,8 +85,8 @@ class MembersFragment : Fragment(), MembersView {
             } else {
                 adapter.appendData(dataSet)
             }
-            if (this is ChatRoomActivity) {
-                this.showRoomTypeIcon(false)
+            if (it is ChatRoomActivity) {
+                it.showRoomTypeIcon(false)
             }
         }
     }
@@ -98,29 +99,37 @@ class MembersFragment : Fragment(), MembersView {
         return super.onOptionsItemSelected(item)
     }
 
-    override fun showLoading() = view_loading.setVisible(true)
+    override fun showLoading() {
+        ui { view_loading.setVisible(true) }
+    }
 
-    override fun hideLoading() = view_loading.setVisible(false)
+    override fun hideLoading() {
+        ui { view_loading.setVisible(false) }
+    }
 
     override fun showMessage(resId: Int) {
+        ui {
             showToast(resId)
         }
+    }
 
     override fun showMessage(message: String) {
+        ui {
             showToast(message)
         }
+    }
 
     override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
 
     private fun setupRecyclerView() {
-        activity?.apply {
+        ui {
             recycler_view.layoutManager = linearLayoutManager
-            recycler_view.addItemDecoration(DividerItemDecoration(this))
+            recycler_view.addItemDecoration(DividerItemDecoration(it))
             recycler_view.adapter = adapter
         }
     }
 
     private fun setupToolbar(totalMembers: Long) {
-        (activity as ChatRoomActivity).setupToolbarTitle(getString(R.string.title_members, totalMembers))
+        (activity as ChatRoomActivity?)?.setupToolbarTitle(getString(R.string.title_members, totalMembers))
     }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/server/infraestructure/ConnectionManager.kt

@@ -22,7 +22,7 @@ import java.util.concurrent.CopyOnWriteArrayList
 
 class ConnectionManager(internal val client: RocketChatClient) {
     private val statusChannelList = CopyOnWriteArrayList<Channel<State>>()
-    private val statusChannel = Channel<State>()
+    private val statusChannel = Channel<State>(Channel.CONFLATED)
     private var connectJob: Job? = null
 
     private val roomAndSubscriptionChannels = ArrayList<Channel<StreamMessage<BaseRoom>>>()
@@ -73,7 +73,8 @@ class ConnectionManager(internal val client: RocketChatClient) {
                 }
 
                 for (channel in statusChannelList) {
-                    channel.send(status)
+                    Timber.d("Sending status: $status to $channel")
+                    channel.offer(status)
                 }
             }
         }

app/src/main/java/chat/rocket/android/settings/password/ui/PasswordFragment.kt

@@ -11,7 +11,10 @@ import chat.rocket.android.util.extensions.asObservable
 import chat.rocket.android.util.extensions.inflate
 import chat.rocket.android.util.extensions.textContent
 import android.support.v7.view.ActionMode
+import chat.rocket.android.util.extensions.ui
 import dagger.android.support.AndroidSupportInjection
+import io.reactivex.disposables.CompositeDisposable
+import io.reactivex.disposables.Disposable
 import io.reactivex.rxkotlin.Observables
 import kotlinx.android.synthetic.main.fragment_password.*
 import javax.inject.Inject
@@ -19,6 +22,7 @@ import javax.inject.Inject
 class PasswordFragment: Fragment(), PasswordView, android.support.v7.view.ActionMode.Callback {
     @Inject lateinit var presenter: PasswordPresenter
     private var actionMode: ActionMode? = null
+    private val disposables = CompositeDisposable()
 
     companion object {
         fun newInstance() = PasswordFragment()
@@ -34,14 +38,21 @@ class PasswordFragment: Fragment(), PasswordView, android.support.v7.view.Action
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        listenToChanges()
+        disposables.add(listenToChanges())
+    }
+
+    override fun onDestroyView() {
+        disposables.clear()
+        super.onDestroyView()
     }
 
     override fun hideLoading() {
+        ui {
             layout_new_password.visibility = View.VISIBLE
             layout_confirm_password.visibility = View.VISIBLE
             view_loading.visibility = View.GONE
         }
+    }
 
     override fun onActionItemClicked(mode: ActionMode, menuItem: MenuItem): Boolean {
         return when (menuItem.itemId) {
@@ -69,10 +80,12 @@ class PasswordFragment: Fragment(), PasswordView, android.support.v7.view.Action
     }
 
     override fun showLoading() {
+        ui {
             layout_new_password.visibility = View.GONE
             layout_confirm_password.visibility = View.GONE
             view_loading.visibility = View.VISIBLE
         }
+    }
 
     override fun showPasswordFailsUpdateMessage(error: String?) {
         showToast("Password fails to update: " + error)
@@ -84,8 +97,9 @@ class PasswordFragment: Fragment(), PasswordView, android.support.v7.view.Action
 
     private fun finishActionMode() = actionMode?.finish()
 
-    private fun listenToChanges() {
-        Observables.combineLatest(text_new_password.asObservable(), text_confirm_password.asObservable()).subscribe {
+    private fun listenToChanges(): Disposable {
+        return Observables.combineLatest(text_new_password.asObservable(),
+                text_confirm_password.asObservable()).subscribe {
             val textPassword = text_new_password.textContent
             val textConfirmPassword = text_confirm_password.textContent
 
@@ -97,7 +111,9 @@ class PasswordFragment: Fragment(), PasswordView, android.support.v7.view.Action
     }
 
     private fun showToast(msg: String?) {
-        Toast.makeText(context, msg, Toast.LENGTH_LONG).show()
+        ui {
+            Toast.makeText(it, msg, Toast.LENGTH_LONG).show()
+        }
     }
 
     private fun startActionMode() {

app/src/main/java/chat/rocket/android/util/extensions/Fragment.kt

+package chat.rocket.android.util.extensions
+
+import android.os.Looper
+import android.support.v4.app.Fragment
+import android.support.v4.app.FragmentActivity
+import kotlinx.coroutines.experimental.Job
+import kotlinx.coroutines.experimental.android.UI
+import kotlinx.coroutines.experimental.launch
+
+inline fun Fragment.ui(crossinline block: (activity: FragmentActivity) -> Unit): Job? {
+    // Checking first for activity and view saves us from some synchronyzed and thread local checks
+    if (activity != null && view != null) {
+        // If we already are running on the Main Thread (UI Thread), just go ahead and execute the block
+        return if (Looper.getMainLooper() == Looper.myLooper()) {
+            block(activity!!)
+            null
+        } else {
+            // Launch a Job on the UI context and check again if the activity and view are still valid
+            launch(UI) {
+                if (activity != null && view != null) {
+                    block(activity!!)
+                }
+            }
+        }
+    }
+
+    return null
+}
\ No newline at end of file

app/src/main/res/drawable/ic_pin_black_24dp.xml

-<vector android:height="24dp" android:viewportHeight="800.0"
-    android:viewportWidth="800.0" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@color/actionMenuColor" android:pathData="M511.8,390H520V84C567,67.8 596.3,42 596.3,16H203.7c0,26 29.3,51.8 76.3,68V390h8.2c-92.9,16 -157.5,61 -157.5,108H377v288h48V498h244.3C669.3,451 604.7,406 511.8,390z"/>
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:viewportWidth="197.218"
+    android:viewportHeight="197.218"
+    android:width="197.218dp"
+    android:height="197.218dp">
+    <group
+        android:translateX="-570.396"
+        android:translateY="-306.782">
+        <path
+            android:pathData="M704.445 306.782l-6.785 6.785c-6.084 6.084 -7.622 14.712 -4.309 21.871l-44.068 35.44 -3.086 -3.086c-7.889 -7.889 -19.525 -7.889 -27.414 0l-8.944 8.953 87.821 87.811 8.934 -8.933c7.899 -7.899 7.899 -19.525 0 -27.433l-3.076 -3.077 36.051 -44.68c6.824 2.466 14.367 1.036 20.037 -4.624l8.008 -5.858 -63.169 -63.169zm-66.867 116.487l-67.182 66.857 0 13.874 13.864 0 66.867 -67.182 -13.549 -13.549z"
+            android:fillColor="@color/actionMenuColor"
+            />
+    </group>
 </vector>
\ No newline at end of file

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

@@ -32,4 +32,50 @@
         app:layout_constraintTop_toTopOf="parent"
         tools:visibility="visible" />
 
+    <ImageView
+        android:id="@+id/iv_pin_icon"
+        android:layout_width="100dp"
+        android:layout_height="100dp"
+        android:src="@drawable/ic_pin_black_24dp"
+        android:tint="#AFADAF"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/tv_pin_title"
+        app:layout_constraintVertical_chainStyle="packed"
+        android:visibility="gone"
+        tools:visibility="visible" />
+
+    <TextView
+        android:id="@+id/tv_pin_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/no_pinned_messages"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/iv_pin_icon"
+        app:layout_constraintBottom_toTopOf="@id/tv_pin_description"
+        android:textSize="20sp"
+        android:layout_marginTop="24dp"
+        android:textStyle="bold"
+        android:textColor="#8B8B8B"
+        android:visibility="gone"
+        tools:visibility="visible"/>
+
+    <TextView
+        android:id="@+id/tv_pin_description"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/no_pinned_description"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tv_pin_title"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_marginTop="16dp"
+        android:textAlignment="center"
+        android:textSize="16sp"
+        android:textColor="#c1c1c1"
+        android:visibility="gone"
+        tools:visibility="visible"/>
+
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file

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

@@ -10,14 +10,14 @@
     android:paddingTop="@dimen/chat_item_top_and_bottom_padding"
     android:paddingBottom="@dimen/chat_item_top_and_bottom_padding">
 
-    <include
-        android:id="@+id/layout_avatar"
-        layout="@layout/avatar"
+    <com.facebook.drawee.view.SimpleDraweeView
+        android:id="@+id/image_avatar"
         android:layout_width="40dp"
         android:layout_height="40dp"
+        app:roundedCornerRadius="3dp"
         android:layout_marginTop="6dp"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"/>
 
     <TextView
         android:id="@+id/text_chat_name"
@@ -25,7 +25,7 @@
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginStart="16dp"
-        app:layout_constraintStart_toEndOf="@id/layout_avatar"
+        app:layout_constraintStart_toEndOf="@id/image_avatar"
         android:textDirection="locale"
         tools:text="General"/>
 
@@ -51,7 +51,7 @@
         app:layout_constraintTop_toBottomOf="@id/text_chat_name"
         app:layout_constraintEnd_toStartOf="@id/layout_unread_messages_badge"
         android:textDirection="locale"
-        tools:text="You: Type something"/>
+        tools:text="You: Type something that is very big and need at least to lines, or maybe even more"/>
 
     <include
         android:id="@+id/layout_unread_messages_badge"

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

@@ -123,6 +123,8 @@
 
     <!-- Pinned Messages -->
     <string name="title_pinned_messages">पिन किए गए संदेश</string>
+    <string name="no_pinned_messages">कोई पिन संदेश नहीं</string>
+    <string name="no_pinned_description">सभी पिन किए गए संदेश यहां\nदिखाई देते हैं।</string>
 
     <!-- Upload Messages -->
     <string name="max_file_size_exceeded">फ़ाइल का आकार %1$d बाइट्स ने %2$d बाइट्स के अधिकतम अपलोड आकार को पार कर लिया है</string>

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

@@ -123,6 +123,8 @@
 
     <!-- Pinned Messages -->
     <string name="title_pinned_messages">Mensagens Pinadas</string>
+    <string name="no_pinned_messages">Nenhuma mensagem pinada</string>
+    <string name="no_pinned_description">Todas as mensagens pinadas\naparecerão aqui</string>
 
     <!-- Upload Messages -->
     <string name="max_file_size_exceeded">Tamanho de arquivo (%1$d bytes) excedeu tamanho máximo de upload (%2$d bytes)</string>

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

@@ -124,6 +124,8 @@
 
     <!-- Pinned Messages -->
     <string name="title_pinned_messages">Pinned Messages</string>
+    <string name="no_pinned_messages">No pinned messages</string>
+    <string name="no_pinned_description">All the pinned messages\nappear here.</string>
 
     <!-- Upload Messages -->
     <string name="max_file_size_exceeded">File size %1$d bytes exceeded max upload size of %2$d bytes</string>

app/src/main/res/xml/network_security_config.xml

+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <base-config cleartextTrafficPermitted="true">
+        <trust-anchors>
+            <certificates src="system" />
+            <certificates src="user" />
+        </trust-anchors>
+    </base-config>
+</network-security-config>