Link to OpenKeychain app

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

@@ -75,6 +75,7 @@ public class FragmentOptionsEncryption extends FragmentBase implements SharedPre
     private SwitchCompat swAutoUndoDecrypt;
 
     private Spinner spOpenPgp;
+    private ImageButton ibOpenKeychain;
     private TextView tvOpenPgpStatus;
     private SwitchCompat swAutocrypt;
     private SwitchCompat swAutocryptMutual;
@@ -113,6 +114,7 @@ public class FragmentOptionsEncryption extends FragmentBase implements SharedPre
         swAutoUndoDecrypt = view.findViewById(R.id.swAutoUndoDecrypt);
 
         spOpenPgp = view.findViewById(R.id.spOpenPgp);
+        ibOpenKeychain = view.findViewById(R.id.ibOpenKeychain);
         tvOpenPgpStatus = view.findViewById(R.id.tvOpenPgpStatus);
         swAutocrypt = view.findViewById(R.id.swAutocrypt);
         swAutocryptMutual = view.findViewById(R.id.swAutocryptMutual);
@@ -208,6 +210,26 @@ public class FragmentOptionsEncryption extends FragmentBase implements SharedPre
             }
         });
 
+        ibOpenKeychain.setVisibility(openPgpProvider.size() > 0 ? View.VISIBLE : View.INVISIBLE);
+        ibOpenKeychain.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String pkg = (String) spOpenPgp.getTag();
+                if (pkg == null)
+                    return;
+
+                PackageManager pm = v.getContext().getPackageManager();
+                if (pm == null)
+                    return;
+
+                Intent intent = pm.getLaunchIntentForPackage(pkg);
+                if (intent == null)
+                    return;
+
+                v.getContext().startActivity(intent);
+            }
+        });
+
         swAutocrypt.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {

app/src/main/res/layout/fragment_options_encryption.xml

@@ -165,12 +165,24 @@
 
                 <Spinner
                     android:id="@+id/spOpenPgp"
-                    android:layout_width="wrap_content"
+                    android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="12dp"
+                    android:layout_marginEnd="6dp"
+                    app:layout_constraintEnd_toStartOf="@id/ibOpenKeychain"
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/tvOpenPgp" />
 
+                <ImageButton
+                    android:id="@+id/ibOpenKeychain"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:background="?android:attr/selectableItemBackgroundBorderless"
+                    android:scaleType="fitCenter"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintTop_toTopOf="@id/spOpenPgp"
+                    app:srcCompat="@drawable/twotone_open_in_new_24" />
+
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvOpenPgpStatus"
                     android:layout_width="0dp"