Added invite

app/src/main/java/eu/faircode/email/ActivityView.java

@@ -92,6 +92,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     static final int REQUEST_ERROR = 3;
 
     static final int REQUEST_ATTACHMENT = 1;
+    static final int REQUEST_INVITE = 2;
 
     static final String ACTION_VIEW_MESSAGES = BuildConfig.APPLICATION_ID + ".VIEW_MESSAGES";
     static final String ACTION_VIEW_MESSAGE = BuildConfig.APPLICATION_ID + ".VIEW_MESSAGE";
@@ -164,6 +165,9 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
                     case R.string.menu_rate:
                         onMenuRate();
                         break;
+                    case R.string.menu_invite:
+                        onMenuInvite();
+                        break;
                     case R.string.menu_other:
                         onMenuOtherApps();
                         break;
@@ -222,6 +226,9 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
 
                 drawerArray.add(new DrawerItem(R.layout.item_drawer_separator));
 
+                if (getIntentInvite().resolveActivity(getPackageManager()) != null)
+                    drawerArray.add(new DrawerItem(ActivityView.this, R.layout.item_drawer, R.drawable.baseline_people_24, R.string.menu_invite));
+
                 if (getIntentRate().resolveActivity(getPackageManager()) != null)
                     drawerArray.add(new DrawerItem(ActivityView.this, R.layout.item_drawer, R.drawable.baseline_star_24, R.string.menu_rate));
 
@@ -567,6 +574,16 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         return intent;
     }
 
+    private Intent getIntentInvite() {
+        Intent intent = new Intent("com.google.android.gms.appinvite.ACTION_APP_INVITE");
+        intent.setPackage("com.google.android.gms");
+        intent.putExtra("com.google.android.gms.appinvite.TITLE", getString(R.string.menu_invite));
+        intent.putExtra("com.google.android.gms.appinvite.MESSAGE", getString(R.string.title_try));
+        intent.putExtra("com.google.android.gms.appinvite.BUTTON_TEXT", getString(R.string.title_try));
+        // com.google.android.gms.appinvite.DEEP_LINK_URL
+        return intent;
+    }
+
     private Intent getIntentOtherApps() {
         Intent intent = new Intent(Intent.ACTION_VIEW);
         intent.setData(Uri.parse("https://play.google.com/store/apps/dev?id=8420080860664580239"));
@@ -652,6 +669,10 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         }
     }
 
+    private void onMenuInvite() {
+        startActivityForResult(getIntentInvite(), REQUEST_INVITE);
+    }
+
     private void onMenuOtherApps() {
         Helper.view(this, getIntentOtherApps());
     }

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

@@ -39,6 +39,7 @@
     <string name="menu_pro">Pro features</string>
     <string name="menu_privacy">Privacy</string>
     <string name="menu_about">About</string>
+    <string name="menu_invite">Invite</string>
     <string name="menu_rate">Rate this app</string>
     <string name="menu_other">Other apps</string>
 
@@ -266,6 +267,8 @@
     <string name="title_no">No</string>
     <string name="title_undo">Undo</string>
 
+    <string name="title_try">Try FairEmail, an open source, privacy friendly email app for Android</string>
+
     <string name="title_pro_feature">This is a pro feature</string>
     <string name="title_pro_list">List of pro features</string>
     <string name="title_pro_purchase">Buy</string>