Added storage space debug info

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

@@ -62,6 +62,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
 
     private TextView tvProcessors;
     private TextView tvMemoryClass;
+    private TextView tvStorageSpace;
     private TextView tvLastCleanup;
     private TextView tvUuid;
 
@@ -102,6 +103,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
 
         tvProcessors = view.findViewById(R.id.tvProcessors);
         tvMemoryClass = view.findViewById(R.id.tvMemoryClass);
+        tvStorageSpace = view.findViewById(R.id.tvStorageSpace);
         tvLastCleanup = view.findViewById(R.id.tvLastCleanup);
         tvUuid = view.findViewById(R.id.tvUuid);
 
@@ -340,6 +342,10 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         ActivityManager am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
         int class_mb = am.getMemoryClass();
         tvMemoryClass.setText(getString(R.string.title_advanced_memory_class, class_mb + " MB"));
+
+        tvStorageSpace.setText(getString(R.string.title_advanced_storage_space,
+                Helper.humanReadableByteCount(Helper.getStorageSpace(), true)));
+
         tvUuid.setText(prefs.getString("uuid", null));
 
         grpDebug.setVisibility(swDebug.isChecked() || BuildConfig.DEBUG ? View.VISIBLE : View.GONE);

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

@@ -40,9 +40,11 @@ import android.hardware.fingerprint.FingerprintManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.Environment;
 import android.os.Handler;
 import android.os.Parcel;
 import android.os.PowerManager;
+import android.os.StatFs;
 import android.text.Spannable;
 import android.text.Spanned;
 import android.text.format.DateUtils;
@@ -676,6 +678,11 @@ public class Helper {
         }
     }
 
+    static long getStorageSpace() {
+        StatFs stats = new StatFs(Environment.getDataDirectory().getAbsolutePath());
+        return stats.getAvailableBlocksLong() * stats.getBlockSizeLong();
+    }
+
     static Bitmap decodeImage(File file, int scaleToPixels) {
         BitmapFactory.Options options = new BitmapFactory.Options();
         options.inJustDecodeBounds = true;

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

@@ -541,6 +541,9 @@ public class Log {
         ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
         sb.append(String.format("Memory class: %d\r\n", am.getMemoryClass()));
 
+        sb.append(String.format("Storage space: %s\r\n",
+                Helper.humanReadableByteCount(Helper.getStorageSpace(), true)));
+
         Runtime rt = Runtime.getRuntime();
         long hused = (rt.totalMemory() - rt.freeMemory()) / 1024L;
         long hmax = rt.maxMemory() / 1024L;

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

@@ -239,6 +239,16 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvProcessors" />
 
+        <TextView
+            android:id="@+id/tvStorageSpace"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:text="@string/title_advanced_storage_space"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tvMemoryClass" />
+
         <TextView
             android:id="@+id/tvLastCleanup"
             android:layout_width="0dp"
@@ -247,7 +257,7 @@
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvMemoryClass" />
+            app:layout_constraintTop_toBottomOf="@id/tvStorageSpace" />
 
         <TextView
             android:id="@+id/tvUuid"
@@ -265,6 +275,6 @@
             android:id="@+id/grpDebug"
             android:layout_width="0dp"
             android:layout_height="0dp"
-            app:constraint_referenced_ids="tvProcessors,tvMemoryClass,tvLastCleanup,tvUuid" />
+            app:constraint_referenced_ids="tvProcessors,tvMemoryClass,tvStorageSpace,tvLastCleanup,tvUuid" />
     </androidx.constraintlayout.widget.ConstraintLayout>
 </ScrollView>

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

@@ -334,6 +334,7 @@
     <string name="title_advanced_cleanup">Cleanup</string>
     <string name="title_advanced_processors" translatable="false">Processors: %1$d</string>
     <string name="title_advanced_memory_class" translatable="false">Memory class: %1$s</string>
+    <string name="title_advanced_storage_space" translatable="false">Storage space: %1$s</string>
     <string name="title_advanced_last_cleanup" translatable="false">Last cleanup: %1$s</string>
 
     <string name="title_advanced_enabled_hint">Globally disable or enable receiving of messages</string>