Added Preference for concealing the PgpApplication

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/Constants.java

@@ -68,6 +68,7 @@ public final class Constants {
         public static final String FORCE_V3_SIGNATURES = "forceV3Signatures";
         public static final String KEY_SERVERS = "keyServers";
         public static final String KEY_SERVERS_DEFAULT_VERSION = "keyServersDefaultVersion";
+        public static final String CONCEAL_PGP_APPLICATION = "concealPgpApplication";
     }
 
     public static final class Defaults {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/Preferences.java

@@ -187,4 +187,14 @@ public class Preferences {
                     .commit();
         }
     }
+
+    public void setConcealPgpApplication(boolean conceal) {
+        SharedPreferences.Editor editor = mSharedPreferences.edit();
+        editor.putBoolean(Constants.Pref.CONCEAL_PGP_APPLICATION, conceal);
+        editor.commit();
+    }
+
+    public boolean getConcealPgpApplication() {
+        return mSharedPreferences.getBoolean(Constants.Pref.CONCEAL_PGP_APPLICATION, false);
+    }
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/PreferencesActivity.java

@@ -121,6 +121,9 @@ public class PreferencesActivity extends PreferenceActivity {
             initializeForceV3Signatures(
                     (CheckBoxPreference) findPreference(Constants.Pref.FORCE_V3_SIGNATURES));
 
+            initializeConcealPgpApplication(
+                    (CheckBoxPreference) findPreference(Constants.Pref.CONCEAL_PGP_APPLICATION));
+
         } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
             // Load the legacy preferences headers
             addPreferencesFromResource(R.xml.preference_headers_legacy);
@@ -264,6 +267,9 @@ public class PreferencesActivity extends PreferenceActivity {
 
             initializeForceV3Signatures(
                     (CheckBoxPreference) findPreference(Constants.Pref.FORCE_V3_SIGNATURES));
+
+            initializeConcealPgpApplication(
+                    (CheckBoxPreference) findPreference(Constants.Pref.CONCEAL_PGP_APPLICATION));
         }
     }
 
@@ -396,4 +402,15 @@ public class PreferencesActivity extends PreferenceActivity {
                     }
                 });
     }
+
+    private static void initializeConcealPgpApplication(final CheckBoxPreference mConcealPgpApplication) {
+        mConcealPgpApplication.setChecked(sPreferences.getConcealPgpApplication());
+        mConcealPgpApplication.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            public boolean onPreferenceChange(Preference preference, Object newValue) {
+                mConcealPgpApplication.setChecked((Boolean) newValue);
+                sPreferences.setConcealPgpApplication((Boolean) newValue);
+                return false;
+            }
+        });
+    }
 }

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

@@ -110,6 +110,7 @@
     <string name="label_passphrase_again">Again</string>
     <string name="label_algorithm">Algorithm</string>
     <string name="label_ascii_armor">ASCII Armor</string>
+    <string name="label_conceal_pgp_application">Conceal PGP Application (OpenKeychain)</string>
     <string name="label_select_public_keys">Recipients</string>
     <string name="label_delete_after_encryption">Delete After Encryption</string>
     <string name="label_delete_after_decryption">Delete After Decryption</string>

OpenKeychain/src/main/res/xml/adv_preferences.xml

@@ -38,6 +38,11 @@
             android:key="defaultAsciiArmor"
             android:persistent="false"
             android:title="@string/label_ascii_armor" />
+
+        <CheckBoxPreference
+            android:key="concealPgpApplication"
+            android:persistent="false"
+            android:title="@string/label_conceal_pgp_application" />
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/section_advanced" >
         <CheckBoxPreference