1 files changed, 47 insertions, 0 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/preferences/MaterialMultiSelectListPreference.java b/app/src/main/java/de/danoeh/antennapod/preferences/MaterialMultiSelectListPreference.java
new file mode 100644
index 000000000..9bc148bc6
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/preferences/MaterialMultiSelectListPreference.java
@@ -0,0 +1,47 @@
+package de.danoeh.antennapod.preferences;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.util.AttributeSet;
+import androidx.preference.MultiSelectListPreference;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class MaterialMultiSelectListPreference extends MultiSelectListPreference {
+
+    public MaterialMultiSelectListPreference(Context context) {
+        super(context);
+    }
+
+    public MaterialMultiSelectListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onClick() {
+        MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(getContext());
+        builder.setTitle(getTitle());
+        builder.setIcon(getDialogIcon());
+        builder.setNegativeButton(getNegativeButtonText(), null);
+
+        boolean[] selected = new boolean[getEntries().length];
+        CharSequence[] values = getEntryValues();
+        for (int i = 0; i < values.length; i++) {
+            selected[i] = getValues().contains(values[i].toString());
+        }
+        builder.setMultiChoiceItems(getEntries(), selected,
+                (DialogInterface dialog, int which, boolean isChecked) -> selected[which] = isChecked);
+        builder.setPositiveButton(android.R.string.ok, (dialog, which) -> {
+            Set<String> selectedValues = new HashSet<>();
+            for (int i = 0; i < values.length; i++) {
+                if (selected[i]) {
+                    selectedValues.add(getEntryValues()[i].toString());
+                }
+            }
+            setValues(selectedValues);
+        });
+        builder.show();
+    }
+}