Remove image cache size setting and choose size automatically

6 files changed, 10 insertions, 60 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/StoragePreferencesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/StoragePreferencesFragment.java
index 42b0cb96f..e5617b8ea 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/StoragePreferencesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/StoragePreferencesFragment.java
@@ -1,7 +1,6 @@
 package de.danoeh.antennapod.fragment.preferences;
 
 import android.os.Bundle;
-import androidx.appcompat.app.AlertDialog;
 import androidx.preference.PreferenceFragmentCompat;
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.activity.PreferenceActivity;
@@ -43,22 +42,6 @@ public class StoragePreferencesFragment extends PreferenceFragmentCompat {
                     return true;
                 }
         );
-        findPreference(UserPreferences.PREF_IMAGE_CACHE_SIZE).setOnPreferenceChangeListener(
-                (preference, o) -> {
-                    if (o instanceof String) {
-                        int newValue = Integer.parseInt((String) o) * 1024 * 1024;
-                        if (newValue != UserPreferences.getImageCacheSize()) {
-                            AlertDialog.Builder dialog = new AlertDialog.Builder(getActivity());
-                            dialog.setTitle(android.R.string.dialog_alert_title);
-                            dialog.setMessage(R.string.pref_restart_required);
-                            dialog.setPositiveButton(android.R.string.ok, null);
-                            dialog.show();
-                        }
-                        return true;
-                    }
-                    return false;
-                }
-        );
         findPreference(PREF_IMPORT_EXPORT).setOnPreferenceClickListener(
                 preference -> {
                     ((PreferenceActivity) getActivity()).openScreen(R.xml.preferences_import_export);
diff --git a/app/src/main/res/xml/preferences_storage.xml b/app/src/main/res/xml/preferences_storage.xml
index d3d570e6c..89e8c4cf5 100644
--- a/app/src/main/res/xml/preferences_storage.xml
+++ b/app/src/main/res/xml/preferences_storage.xml
@@ -6,13 +6,6 @@
     <Preference
             android:title="@string/choose_data_directory"
             android:key="prefChooseDataDir"/>
-    <ListPreference
-            android:entryValues="@array/image_cache_size_values"
-            android:entries="@array/image_cache_size_options"
-            android:title="@string/pref_image_cache_size_title"
-            android:key="prefImageCacheSize"
-            android:summary="@string/pref_image_cache_size_sum"
-            android:defaultValue="100"/>
     <SwitchPreferenceCompat
             android:defaultValue="false"
             android:enabled="true"
diff --git a/core/src/main/java/de/danoeh/antennapod/core/glide/ApGlideModule.java b/core/src/main/java/de/danoeh/antennapod/core/glide/ApGlideModule.java
index b3adc567e..8ad04cb47 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/glide/ApGlideModule.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/glide/ApGlideModule.java
@@ -1,6 +1,8 @@
 package de.danoeh.antennapod.core.glide;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 import com.bumptech.glide.Glide;
@@ -16,7 +18,6 @@ import de.danoeh.antennapod.core.util.EmbeddedChapterImage;
 import java.io.InputStream;
 
 import com.bumptech.glide.request.RequestOptions;
-import de.danoeh.antennapod.core.preferences.UserPreferences;
 import java.nio.ByteBuffer;
 
 /**
@@ -24,12 +25,18 @@ import java.nio.ByteBuffer;
  */
 @GlideModule
 public class ApGlideModule extends AppGlideModule {
+    private static final String TAG = "ApGlideModule";
+    private static final long MEGABYTES = 1024 * 1024;
+    private static final long GIGABYTES = 1024 * 1024 * 1024;
 
     @Override
     public void applyOptions(@NonNull Context context, @NonNull GlideBuilder builder) {
         builder.setDefaultRequestOptions(new RequestOptions().format(DecodeFormat.PREFER_ARGB_8888));
-        builder.setDiskCache(new InternalCacheDiskCacheFactory(context,
-                UserPreferences.getImageCacheSize()));
+        @SuppressLint("UsableSpace")
+        long spaceAvailable = context.getCacheDir().getUsableSpace();
+        long imageCacheSize = (spaceAvailable > 2 * GIGABYTES) ? (250 * MEGABYTES) : (50 * MEGABYTES);
+        Log.d(TAG, "Free space on cache dir: " + spaceAvailable + ", using image cache size: " + imageCacheSize);
+        builder.setDiskCache(new InternalCacheDiskCacheFactory(context, imageCacheSize));
     }
 
     @Override
diff --git a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java b/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
index 046e5a5a7..91006d446 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
@@ -116,7 +116,6 @@ public class UserPreferences {
 
     // Other
     private static final String PREF_DATA_FOLDER = "prefDataFolder";
-    public static final String PREF_IMAGE_CACHE_SIZE = "prefImageCacheSize";
     public static final String PREF_DELETE_REMOVES_FROM_QUEUE = "prefDeleteRemovesFromQueue";
     public static final String PREF_USAGE_COUNTING_DATE = "prefUsageCounting";
 
@@ -129,8 +128,6 @@ public class UserPreferences {
     private static final String PREF_FAST_FORWARD_SECS = "prefFastForwardSecs";
     private static final String PREF_REWIND_SECS = "prefRewindSecs";
     private static final String PREF_QUEUE_LOCKED = "prefQueueLocked";
-    private static final String IMAGE_CACHE_DEFAULT_VALUE = "100";
-    private static final int IMAGE_CACHE_SIZE_MINIMUM = 20;
     private static final String PREF_LEFT_VOLUME = "prefLeftVolume";
     private static final String PREF_RIGHT_VOLUME = "prefRightVolume";
 
@@ -616,18 +613,6 @@ public class UserPreferences {
         return Build.VERSION.SDK_INT < 29 && prefs.getBoolean(PREF_ENABLE_AUTODL_WIFI_FILTER, false);
     }
 
-    public static int getImageCacheSize() {
-        String cacheSizeString = prefs.getString(PREF_IMAGE_CACHE_SIZE, IMAGE_CACHE_DEFAULT_VALUE);
-        int cacheSizeInt = Integer.parseInt(cacheSizeString);
-        // if the cache size is too small the user won't get any images at all
-        // that's bad, force it back to the default.
-        if (cacheSizeInt < IMAGE_CACHE_SIZE_MINIMUM) {
-            prefs.edit().putString(PREF_IMAGE_CACHE_SIZE, IMAGE_CACHE_DEFAULT_VALUE).apply();
-            cacheSizeInt = Integer.parseInt(IMAGE_CACHE_DEFAULT_VALUE);
-        }
-        return cacheSizeInt * 1024 * 1024;
-    }
-
     public static int getFastForwardSecs() {
         return prefs.getInt(PREF_FAST_FORWARD_SECS, 30);
     }
diff --git a/core/src/main/res/values/arrays.xml b/core/src/main/res/values/arrays.xml
index 290c8635f..97b677362 100644
--- a/core/src/main/res/values/arrays.xml
+++ b/core/src/main/res/values/arrays.xml
@@ -270,22 +270,6 @@
         <item>DURATION_LONG_SHORT</item>
     </string-array>
 
-    <string-array name="image_cache_size_options">
-        <item>20 MiB</item>
-        <item>50 MiB</item>
-        <item>100 MiB</item>
-        <item>250 MiB</item>
-        <item>500 MiB</item>
-    </string-array>
-
-    <string-array name="image_cache_size_values">
-        <item>20</item>
-        <item>50</item>
-        <item>100</item>
-        <item>250</item>
-        <item>500</item>
-    </string-array>
-
     <string-array name="compact_notification_buttons_options">
         <item>@string/rewind_label</item>
         <item>@string/fast_forward_label</item>
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index 9523ff5f2..c9d7b028a 100644
--- a/core/src/main/res/values/strings.xml
+++ b/core/src/main/res/values/strings.xml
@@ -484,8 +484,6 @@
     <string name="enqueue_location_front">Front</string>
     <string name="enqueue_location_after_current">After current episode</string>
     <string name="pref_smart_mark_as_played_disabled">Disabled</string>
-    <string name="pref_image_cache_size_title">Image Cache Size</string>
-    <string name="pref_image_cache_size_sum">Size of the disk cache for images.</string>
     <string name="documentation_support">Documentation &amp; Support</string>
     <string name="visit_user_forum">User forum</string>
     <string name="bug_report_title">Report bug</string>