Refactoring

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

@@ -40,7 +40,6 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Debug;
 import android.os.Environment;
-import android.os.storage.StorageManager;
 import android.provider.Settings;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
@@ -1821,7 +1820,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
                     data.available = Helper.getAvailableStorageSpace();
                     data.total = Helper.getTotalStorageSpace();
                     data.used = Helper.getSize(context.getFilesDir());
-                    data.cache = Helper.getCacheSize(context);
+                    data.cache = Helper.getCacheQuota(context);
                     return data;
                 }
 

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

@@ -2019,7 +2019,8 @@ public class Helper {
         return stats.getTotalBytes();
     }
 
-    static long getCacheSize(Context context) {
+    static long getCacheQuota(Context context) {
+        // https://developer.android.com/reference/android/content/Context#getCacheDir()
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
             try {
                 StorageManager sm = Helper.getSystemService(context, StorageManager.class);

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

@@ -1886,7 +1886,7 @@ public class Log {
         long storage_available = Helper.getAvailableStorageSpace();
         long storage_total = Helper.getTotalStorageSpace();
         long storage_used = Helper.getSize(context.getFilesDir());
-        long cache = Helper.getCacheSize(context);
+        long cache = Helper.getCacheQuota(context);
         sb.append(String.format("Storage space: %s/%s App: %s cache: %s\r\n",
                 Helper.humanReadableByteCount(storage_total - storage_available),
                 Helper.humanReadableByteCount(storage_total),