Add banner warning about API 19 deprecation.

app/src/main/java/org/thoughtcrime/securesms/components/reminder/Api19Reminder.kt

@@ -0,0 +1,45 @@
+package org.thoughtcrime.securesms.components.reminder
+
+import android.content.Context
+import android.os.Build
+import org.thoughtcrime.securesms.R
+import org.thoughtcrime.securesms.util.Util
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+/**
+ * Shown when a user has API 19.
+ */
+class Api19Reminder(context: Context) : Reminder(null, context.getString(R.string.API19Reminder_banner_message, getExpireDate())) {
+
+  init {
+    addAction(
+      Action(
+        context.getString(R.string.API19Reminder_learn_more),
+        R.id.reminder_action_api_19_learn_more
+      )
+    )
+  }
+
+  override fun isDismissable(): Boolean {
+    return false
+  }
+
+  override fun getImportance(): Importance {
+    return Importance.TERMINAL
+  }
+
+  companion object {
+    @JvmStatic
+    fun isEligible(): Boolean {
+      return Build.VERSION.SDK_INT < 21 && !ExpiredBuildReminder.isEligible()
+    }
+
+    fun getExpireDate(): String {
+      val formatter = SimpleDateFormat("MMMM d", Locale.getDefault())
+      val expireDate = Date(System.currentTimeMillis() + Util.getTimeUntilBuildExpiry())
+      return formatter.format(expireDate)
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/reminder/ExpiredBuildReminder.java

@@ -1,11 +1,13 @@
 package org.thoughtcrime.securesms.components.reminder;
 
 import android.content.Context;
+import android.os.Build;
 
 import androidx.annotation.NonNull;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.keyvalue.SignalStore;
+import org.thoughtcrime.securesms.util.CommunicationActions;
 import org.thoughtcrime.securesms.util.PlayStoreUtil;
 
 import java.util.List;
@@ -17,10 +19,15 @@ import java.util.List;
 public class ExpiredBuildReminder extends Reminder {
 
   public ExpiredBuildReminder(final Context context) {
-    super(null, context.getString(R.string.ExpiredBuildReminder_this_version_of_signal_has_expired));
+    super(null, Build.VERSION.SDK_INT < 21
+                ? context.getString(R.string.ExpiredBuildReminder_api_19_message)
+                : context.getString(R.string.ExpiredBuildReminder_this_version_of_signal_has_expired));
 
-    setOkListener(v -> PlayStoreUtil.openPlayStoreOrOurApkDownloadPage(context));
-    addAction(new Action(context.getString(R.string.ExpiredBuildReminder_update_now), R.id.reminder_action_update_now));
+    if (Build.VERSION.SDK_INT < 21) {
+      addAction(new Action(context.getString(R.string.API19Reminder_learn_more), R.id.reminder_action_api_19_learn_more));
+    } else {
+      addAction(new Action(context.getString(R.string.ExpiredBuildReminder_update_now), R.id.reminder_action_update_now));
+    }
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/reminder/Reminder.java

@@ -82,11 +82,11 @@ public abstract class Reminder {
       this.actionId = actionId;
     }
 
-    CharSequence getTitle() {
+    public CharSequence getTitle() {
       return title;
     }
 
-    int getActionId() {
+    public int getActionId() {
       return actionId;
     }
   }

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationParentFragment.java

@@ -1936,6 +1936,8 @@ public class ConversationParentFragment extends Fragment
       InsightsLauncher.showInsightsDashboard(getChildFragmentManager());
     } else if (reminderActionId == R.id.reminder_action_update_now) {
       PlayStoreUtil.openPlayStoreOrOurApkDownloadPage(requireContext());
+    } else if (reminderActionId == R.id.reminder_action_api_19_learn_more) {
+      CommunicationActions.openBrowserLink(requireContext(), "https://support.signal.org/hc/articles/5109141421850");
     } else {
       throw new IllegalArgumentException("Unknown ID: " + reminderActionId);
     }
@@ -2974,6 +2976,11 @@ public class ConversationParentFragment extends Fragment
   }
 
   private void sendMediaMessage(@NonNull MediaSendActivityResult result) {
+    if (ExpiredBuildReminder.isEligible()) {
+      showExpiredDialog();
+      return;
+    }
+
     long            thread    = this.threadId;
     long            expiresIn = TimeUnit.SECONDS.toMillis(recipient.get().getExpiresInSeconds());
     QuoteModel      quote     = result.isViewOnce() ? null : inputPanel.getQuote().orElse(null);
@@ -3052,6 +3059,11 @@ public class ConversationParentFragment extends Fragment
                                                   final boolean clearComposeBox,
                                                   final @Nullable String metricId)
   {
+    if (ExpiredBuildReminder.isEligible()) {
+      showExpiredDialog();
+      return new SettableFuture<>(null);
+    }
+
     if (!viewModel.isDefaultSmsApplication() && sendType.usesSmsTransport() && recipient.get().hasSmsAddress()) {
       showDefaultSmsPrompt();
       return new SettableFuture<>(null);
@@ -3130,6 +3142,11 @@ public class ConversationParentFragment extends Fragment
   private void sendTextMessage(@NonNull MessageSendType sendType, final long expiresIn, final boolean initiating, final @Nullable String metricId)
       throws InvalidMessageException
   {
+    if (ExpiredBuildReminder.isEligible()) {
+      showExpiredDialog();
+      return;
+    }
+
     if (!viewModel.isDefaultSmsApplication() && sendType.usesSmsTransport() && recipient.get().hasSmsAddress()) {
       showDefaultSmsPrompt();
       return;
@@ -3172,6 +3189,29 @@ public class ConversationParentFragment extends Fragment
                    .show();
   }
 
+  private void showExpiredDialog() {
+    Reminder reminder = new ExpiredBuildReminder(requireContext());
+
+    MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireContext())
+        .setMessage(reminder.getText())
+        .setPositiveButton(android.R.string.ok, (d, w) -> d.dismiss());
+
+    List<Reminder.Action> actions = reminder.getActions();
+    if (actions.size() == 1) {
+      Reminder.Action action = actions.get(0);
+
+      builder.setNeutralButton(action.getTitle(), (d, i) -> {
+        if (action.getActionId() == R.id.reminder_action_update_now) {
+          PlayStoreUtil.openPlayStoreOrOurApkDownloadPage(requireContext());
+        } else if (action.getActionId() == R.id.reminder_action_api_19_learn_more) {
+          CommunicationActions.openBrowserLink(requireContext(), "https://support.signal.org/hc/articles/5109141421850");
+        }
+      });
+    }
+
+    builder.show();
+  }
+
   private void updateToggleButtonState() {
     if (inputPanel.isRecordingInLockedMode()) {
       buttonToggle.display(sendButton);

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListFragment.java

@@ -97,6 +97,7 @@ import org.thoughtcrime.securesms.components.menu.ActionItem;
 import org.thoughtcrime.securesms.components.menu.SignalBottomActionBar;
 import org.thoughtcrime.securesms.components.menu.SignalContextMenu;
 import org.thoughtcrime.securesms.components.registration.PulsingFloatingActionButton;
+import org.thoughtcrime.securesms.components.reminder.Api19Reminder;
 import org.thoughtcrime.securesms.components.reminder.CdsPermanentErrorReminder;
 import org.thoughtcrime.securesms.components.reminder.CdsTemporyErrorReminder;
 import org.thoughtcrime.securesms.components.reminder.DozeReminder;
@@ -158,6 +159,7 @@ import org.thoughtcrime.securesms.stories.tabs.ConversationListTabsViewModel;
 import org.thoughtcrime.securesms.util.AppForegroundObserver;
 import org.thoughtcrime.securesms.util.AppStartup;
 import org.thoughtcrime.securesms.util.BottomSheetUtil;
+import org.thoughtcrime.securesms.util.CommunicationActions;
 import org.thoughtcrime.securesms.util.ConversationUtil;
 import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.LifecycleDisposable;
@@ -681,6 +683,8 @@ public class ConversationListFragment extends MainFragment implements ActionMode
       CdsTemporaryErrorBottomSheet.show(getChildFragmentManager());
     } else if (reminderActionId == R.id.reminder_action_cds_permanent_error_learn_more) {
       CdsPermanentErrorBottomSheet.show(getChildFragmentManager());
+    } else if (reminderActionId == R.id.reminder_action_api_19_learn_more) {
+      CommunicationActions.openBrowserLink(requireContext(), "https://support.signal.org/hc/articles/5109141421850");
     }
   }
 
@@ -942,6 +946,8 @@ public class ConversationListFragment extends MainFragment implements ActionMode
       } else if (ServiceOutageReminder.isEligible(context)) {
         ApplicationDependencies.getJobManager().add(new ServiceOutageDetectionJob());
         return Optional.of(new ServiceOutageReminder(context));
+      } else if (Api19Reminder.isEligible()) {
+        return Optional.of(new Api19Reminder(context));
       } else if (OutdatedBuildReminder.isEligible()) {
         return Optional.of(new OutdatedBuildReminder(context));
       } else if (PushRegistrationReminder.isEligible(context)) {

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

@@ -18,6 +18,8 @@
     <item name="reminder_action_cds_temporary_error_learn_more" type="id" />
     <item name="reminder_action_cds_permanent_error_learn_more" type="id" />
 
+    <item name="reminder_action_api_19_learn_more" type="id" />
+
     <item name="status_bar_guideline" type="id" />
     <item name="navigation_bar_guideline" type="id" />
 

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

@@ -653,6 +653,9 @@
     <string name="ExpiredBuildReminder_this_version_of_signal_has_expired">This version of Signal has expired. Update now to send and receive messages.</string>
     <string name="ExpiredBuildReminder_update_now">Update now</string>
 
+    <!-- A message in a banner shown at the top of the screen indicating that the user must upgrade their device to use signal. -->
+    <string name="ExpiredBuildReminder_api_19_message">Signal no longer works on this device. To use Signal again, update your device to a newer version of Android or switch to a newer device.</string>
+
     <!-- PendingGroupJoinRequestsReminder -->
     <plurals name="PendingGroupJoinRequestsReminder_d_pending_member_requests">
         <item quantity="one">%d pending member request.</item>
@@ -5482,4 +5485,10 @@
     <!-- Displayed in the "clear filter" item in the chat feed if the user opened the filter from the overflow menu -->
     <string name="ChatFilter__tip_pull_down">Tip: Pull down on the chat list to filter</string>
 
+    <!-- Text for a banner that is shown at the top of the screen letting users know that they're version of signal will soon expire. The placeholder is a date. -->
+    <string name="API19Reminder_banner_message">Signal will no longer support your device\'s version of Android soon. To keep using Signal, update your device, or switch to a newer device by %1$s.</string>
+
+    <!-- Text for a button in a banner shown at the top of the screen that users can click on to get more information. -->
+    <string name="API19Reminder_learn_more">Learn more</string>
+
 </resources>