Link to OpenKeychain app only when relevant

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

@@ -7759,7 +7759,17 @@ public class FragmentCompose extends FragmentBase {
                 }
             });
 
-            if (Helper.isOpenKeychainInstalled(context)) {
+            spEncrypt.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+                @Override
+                public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                    int last = (int) spEncrypt.getTag();
+                    if (last != position) {
+                        spEncrypt.setTag(position);
+                        setEncrypt(encryptValues[position]);
+
+                        if ((encryptValues[position] == EntityMessage.PGP_SIGNONLY ||
+                                encryptValues[position] == EntityMessage.PGP_SIGNENCRYPT) &&
+                                Helper.isOpenKeychainInstalled(context)) {
                             tvEncrypt.setPaintFlags(tvEncrypt.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
                             tvEncrypt.setOnClickListener(new View.OnClickListener() {
                                 @Override
@@ -7769,15 +7779,10 @@ public class FragmentCompose extends FragmentBase {
                                     v.getContext().startActivity(pm.getLaunchIntentForPackage(pkg));
                                 }
                             });
+                        } else {
+                            tvEncrypt.setPaintFlags(tvEncrypt.getPaintFlags() & ~Paint.UNDERLINE_TEXT_FLAG);
+                            tvEncrypt.setOnClickListener(null);
                         }
-
-            spEncrypt.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
-                @Override
-                public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
-                    int last = (int) spEncrypt.getTag();
-                    if (last != position) {
-                        spEncrypt.setTag(position);
-                        setEncrypt(encryptValues[position]);
                     }
                 }