Google Task sync requires Android 4.4+

app/src/main/java/com/todoroo/andlib/utility/AndroidUtilities.java

@@ -134,6 +134,10 @@ public class AndroidUtilities {
     return (int) (dp * displayMetrics.density + 0.5f);
   }
 
+  public static boolean preKitKat() {
+    return !atLeastKitKat();
+  }
+
   public static boolean preLollipop() {
     return !atLeastLollipop();
   }

app/src/main/java/org/tasks/gtasks/GoogleTaskSynchronizer.java

@@ -1,6 +1,7 @@
 package org.tasks.gtasks;
 
 import static com.google.common.collect.Lists.transform;
+import static com.todoroo.andlib.utility.AndroidUtilities.preKitKat;
 import static org.tasks.date.DateTimeUtils.newDateTime;
 
 import android.content.Context;
@@ -165,11 +166,13 @@ public class GoogleTaskSynchronizer {
   }
 
   private void synchronize(GoogleTaskAccount account) throws IOException {
+    if (preKitKat()) {
+      account.setError(context.getString(R.string.requires_android_version, "4.4"));
+      return;
+    }
     if (!permissionChecker.canAccessAccounts()
         || googleAccountManager.getAccount(account.getAccount()) == null) {
       account.setError(context.getString(R.string.cannot_access_account));
-      googleTaskListDao.update(account);
-      localBroadcastManager.broadcastRefreshList();
       return;
     }
 

app/src/main/java/org/tasks/sync/AddAccountDialog.java

@@ -1,5 +1,7 @@
 package org.tasks.sync;
 
+import static com.todoroo.andlib.utility.AndroidUtilities.atLeastKitKat;
+
 import android.app.Activity;
 import android.content.Intent;
 import android.content.res.TypedArray;
@@ -9,6 +11,7 @@ import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
@@ -61,9 +64,18 @@ public class AddAccountDialog {
             (dialog, which) -> {
               switch (which) {
                 case 0:
-                  activity.startActivityForResult(
-                      new Intent(activity, GtasksLoginActivity.class),
-                      SynchronizationKt.REQUEST_GOOGLE_TASKS);
+                  if (atLeastKitKat()) {
+                    activity.startActivityForResult(
+                        new Intent(activity, GtasksLoginActivity.class),
+                        SynchronizationKt.REQUEST_GOOGLE_TASKS);
+                  } else {
+                    Toast.makeText(
+                            activity,
+                            activity.getString(R.string.requires_android_version, "4.4"),
+                            Toast.LENGTH_SHORT)
+                        .show();
+                    return;
+                  }
                   break;
                 case 1:
                   activity.startActivityForResult(

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

@@ -557,4 +557,5 @@ File %1$s contained %2$s.\n\n
   <string name="upgrade_blurb_3">Choose any subscription price below to start your free trial. You may cancel at any time</string>
   <string name="upgrade_blurb_4">Your support means a lot to me, thank you!</string>
   <string name="back">Back</string>
+  <string name="requires_android_version">Requires Android %s+</string>
 </resources>