feat: added the option in the settings to delete all saved offline content.

app/src/main/java/com/cappielloantonio/tempo/ui/dialog/DeleteDownloadStorageDialog.java

@@ -0,0 +1,65 @@
+package com.cappielloantonio.tempo.ui.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.os.Bundle;
+import android.widget.Button;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
+import androidx.fragment.app.DialogFragment;
+import androidx.media3.common.util.UnstableApi;
+
+import com.cappielloantonio.tempo.R;
+import com.cappielloantonio.tempo.databinding.DialogDeleteDownloadStorageBinding;
+import com.cappielloantonio.tempo.interfaces.DialogClickCallback;
+import com.cappielloantonio.tempo.util.DownloadUtil;
+
+@OptIn(markerClass = UnstableApi.class)
+public class DeleteDownloadStorageDialog extends DialogFragment {
+    private DialogDeleteDownloadStorageBinding bind;
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        bind = DialogDeleteDownloadStorageBinding.inflate(getLayoutInflater());
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+
+        builder.setView(bind.getRoot())
+                .setTitle(R.string.delete_download_storage_dialog_title)
+                .setPositiveButton(R.string.delete_download_storage_dialog_positive_button, null)
+                .setNegativeButton(R.string.delete_download_storage_dialog_negative_button, null);
+
+        return builder.create();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        setButtonAction();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        bind = null;
+    }
+
+    private void setButtonAction() {
+        AlertDialog dialog = ((AlertDialog) getDialog());
+
+        if (dialog != null) {
+            Button positiveButton = dialog.getButton(Dialog.BUTTON_POSITIVE);
+            positiveButton.setOnClickListener(v -> {
+                DownloadUtil.getDownloadTracker(requireContext()).removeAll();
+                dialog.dismiss();
+            });
+
+            Button negativeButton = dialog.getButton(Dialog.BUTTON_NEGATIVE);
+            negativeButton.setOnClickListener(v -> {
+                dialog.dismiss();
+            });
+        }
+    }
+}

app/src/main/java/com/cappielloantonio/tempo/ui/fragment/SettingsFragment.java

@@ -24,6 +24,7 @@ import com.cappielloantonio.tempo.helper.ThemeHelper;
 import com.cappielloantonio.tempo.interfaces.DialogClickCallback;
 import com.cappielloantonio.tempo.interfaces.ScanCallback;
 import com.cappielloantonio.tempo.ui.activity.MainActivity;
+import com.cappielloantonio.tempo.ui.dialog.DeleteDownloadStorageDialog;
 import com.cappielloantonio.tempo.ui.dialog.DownloadStorageDialog;
 import com.cappielloantonio.tempo.ui.dialog.StarredSyncDialog;
 import com.cappielloantonio.tempo.util.Preferences;
@@ -125,6 +126,12 @@ public class SettingsFragment extends PreferenceFragmentCompat {
             dialog.show(activity.getSupportFragmentManager(), null);
             return true;
         });
+
+        findPreference("delete_download_storage").setOnPreferenceClickListener(preference -> {
+            DeleteDownloadStorageDialog dialog = new DeleteDownloadStorageDialog();
+            dialog.show(activity.getSupportFragmentManager(), null);
+            return true;
+        });
     }
 
     @Override

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

@@ -0,0 +1,15 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="12dp"
+        android:layout_marginEnd="24dp"
+        android:layout_marginBottom="4dp"
+        android:text="@string/delete_download_storage_dialog_summary" />
+
+</LinearLayout>

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

@@ -49,6 +49,10 @@
     <string name="connection_alert_dialog_positive_button">OK</string>
     <string name="connection_alert_dialog_title">Wi-Fi not connected</string>
     <string name="connection_alert_dialog_summary">Access to the Subsonic server on connections other than Wi-Fi has been restricted. To prevent this alert dialod from reappearing, disable the connection check in the app settings.</string>
+    <string name="delete_download_storage_dialog_negative_button">Cancel</string>
+    <string name="delete_download_storage_dialog_positive_button">Continue</string>
+    <string name="delete_download_storage_dialog_summary">Please be aware that continuing with this action will result in the permanent deletion of all saved items downloaded from all servers.</string>
+    <string name="delete_download_storage_dialog_title">Delete saved items</string>
     <string name="download_info_empty_subtitle">Once you download a song, you\'ll find it here</string>
     <string name="download_info_empty_title">No downloads yet!</string>
     <string name="download_title_section">Downloads</string>
@@ -185,6 +189,8 @@
     <string name="settings_covers_cache">Size of artwork cache</string>
     <string name="settings_data_saving_mode_summary">In order to reduce data consumption, avoid downloading covers.</string>
     <string name="settings_data_saving_mode_title">Limit mobile data usage</string>
+    <string name="settings_delete_download_storage_title">Delete saved items</string>
+    <string name="settings_delete_download_storage_summary">Proceeding will result in the irreversible deletion of all saved items.</string>
     <string name="settings_download_storage_title">Download storage</string>
     <string name="settings_equalizer_summary">Adjust audio settings</string>
     <string name="settings_equalizer_title">Equalizer</string>

app/src/main/res/xml/global_preferences.xml

@@ -99,6 +99,11 @@
         <Preference
             android:key="download_storage"
             app:title="@string/settings_download_storage_title" />
+
+        <Preference
+            android:key="delete_download_storage"
+            app:title="@string/settings_delete_download_storage_title"
+            app:summary="@string/settings_delete_download_storage_summary"/>
     </PreferenceCategory>
 
     <PreferenceCategory app:title="@string/settings_title_transcoding">