Show external storage space folder

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

@@ -34,6 +34,7 @@ import android.graphics.Typeface;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Debug;
+import android.os.Environment;
 import android.provider.Settings;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
@@ -134,6 +135,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private Button btnRepair;
     private SwitchCompat swAutostart;
     private SwitchCompat swExternalStorage;
+    private TextView tvExternalStorageFolder;
     private TextView tvRoomQueryThreads;
     private SeekBar sbRoomQueryThreads;
     private ImageButton ibRoom;
@@ -282,6 +284,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         btnRepair = view.findViewById(R.id.btnRepair);
         swAutostart = view.findViewById(R.id.swAutostart);
         swExternalStorage = view.findViewById(R.id.swExternalStorage);
+        tvExternalStorageFolder = view.findViewById(R.id.tvExternalStorageFolder);
         tvRoomQueryThreads = view.findViewById(R.id.tvRoomQueryThreads);
         sbRoomQueryThreads = view.findViewById(R.id.sbRoomQueryThreads);
         ibRoom = view.findViewById(R.id.ibRoom);
@@ -1285,6 +1288,10 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
 
         setLastCleanup(prefs.getLong("last_cleanup", -1));
 
+        File external = getContext().getExternalFilesDir(null);
+        boolean emulated = Environment.isExternalStorageEmulated(external);
+        tvExternalStorageFolder.setText(external.getAbsolutePath() + (emulated ? " emulated" : ""));
+
         swExactAlarms.setEnabled(AlarmManagerCompatEx.canScheduleExactAlarms(getContext()));
         swTestIab.setVisibility(BuildConfig.DEBUG ? View.VISIBLE : View.GONE);
 

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

@@ -707,12 +707,27 @@
                     android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     android:layout_marginTop="12dp"
+                    android:drawableStart="@drawable/twotone_warning_24"
+                    android:drawablePadding="6dp"
+                    android:drawableTint="?attr/colorError"
                     android:text="@string/title_advanced_external_storage"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/swAutostart"
                     app:switchPadding="12dp" />
 
+                <eu.faircode.email.FixedTextView
+                    android:id="@+id/tvExternalStorageFolder"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="monospace"
+                    android:text="/data/data/..."
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textSize="12sp"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swExternalStorage" />
+
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvRoomQueryThreads"
                     android:layout_width="0dp"
@@ -723,7 +738,7 @@
                     android:textAppearance="@style/TextAppearance.AppCompat.Small"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/swExternalStorage" />
+                    app:layout_constraintTop_toBottomOf="@id/tvExternalStorageFolder" />
 
                 <SeekBar
                     android:id="@+id/sbRoomQueryThreads"