Implemented the alert dialog for checking the type of internet connection

.idea/misc.xml

@@ -44,6 +44,7 @@
         <entry key="app/src/main/res/layout/bottom_sheet_artist_dialog.xml" value="0.225" />
         <entry key="app/src/main/res/layout/bottom_sheet_song_dialog.xml" value="0.21666666666666667" />
         <entry key="app/src/main/res/layout/chip_search_filter_genre.xml" value="0.3229166666666667" />
+        <entry key="app/src/main/res/layout/dialog_connection_alert.xml" value="0.528125" />
         <entry key="app/src/main/res/layout/dialog_playlist_chooser.xml" value="0.3229166666666667" />
         <entry key="app/src/main/res/layout/dialog_playlist_creator.xml" value="0.3229166666666667" />
         <entry key="app/src/main/res/layout/dialog_playlist_editor.xml" value="0.3229166666666667" />

app/src/main/java/com/cappielloantonio/play/ui/activity/MainActivity.java

@@ -1,9 +1,9 @@
 package com.cappielloantonio.play.ui.activity;
 
+import android.content.Context;
 import android.content.IntentFilter;
 import android.net.ConnectivityManager;
 import android.os.Bundle;
-import android.util.Log;
 import android.view.View;
 
 import androidx.annotation.NonNull;
@@ -22,7 +22,7 @@ import com.cappielloantonio.play.repository.QueueRepository;
 import com.cappielloantonio.play.service.MusicPlayerRemote;
 import com.cappielloantonio.play.ui.activity.base.BaseActivity;
 import com.cappielloantonio.play.ui.fragment.PlayerBottomSheetFragment;
-import com.cappielloantonio.play.ui.fragment.dialog.PlaylistEditorDialog;
+import com.cappielloantonio.play.ui.fragment.dialog.ConnectionAlertDialog;
 import com.cappielloantonio.play.ui.fragment.dialog.ServerUnreachableDialog;
 import com.cappielloantonio.play.util.PreferenceUtil;
 import com.cappielloantonio.play.viewmodel.MainViewModel;
@@ -59,6 +59,7 @@ public class MainActivity extends BaseActivity {
         connectivityStatusReceiverManager(true);
 
         init();
+        checkConnectionType();
     }
 
     @Override
@@ -250,11 +251,21 @@ public class MainActivity extends BaseActivity {
     private void pingServer() {
         if (PreferenceUtil.getInstance(this).getToken() != null) {
             mainViewModel.ping().observe(this, isPingSuccessfull -> {
-                if(!isPingSuccessfull) {
+                if (!isPingSuccessfull) {
                     ServerUnreachableDialog dialog = new ServerUnreachableDialog();
                     dialog.show(getSupportFragmentManager(), null);
                 }
             });
         }
     }
+
+    private void checkConnectionType() {
+        if (PreferenceUtil.getInstance(this).isWifiOnly()) {
+            ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
+            if (connectivityManager.getActiveNetworkInfo().getType() != ConnectivityManager.TYPE_WIFI) {
+                ConnectionAlertDialog dialog = new ConnectionAlertDialog();
+                dialog.show(getSupportFragmentManager(), null);
+            }
+        }
+    }
 }

app/src/main/java/com/cappielloantonio/play/ui/fragment/dialog/ConnectionAlertDialog.java

@@ -0,0 +1,61 @@
+package com.cappielloantonio.play.ui.fragment.dialog;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+
+import com.cappielloantonio.play.R;
+import com.cappielloantonio.play.databinding.DialogConnectionAlertBinding;
+import com.cappielloantonio.play.util.PreferenceUtil;
+
+import java.util.Objects;
+
+public class ConnectionAlertDialog extends DialogFragment {
+    private static final String TAG = "ServerUnreachableDialog";
+
+    private DialogConnectionAlertBinding bind;
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        bind = DialogConnectionAlertBinding.inflate(LayoutInflater.from(requireContext()));
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), R.style.AppTheme_AlertDialog);
+
+        builder.setView(bind.getRoot())
+                .setTitle(R.string.connection_alert_dialog_title)
+                .setPositiveButton(R.string.connection_alert_dialog_positive_button, (dialog, id) -> dialog.cancel())
+                .setNeutralButton(R.string.connection_alert_dialog_neutral_button, (dialog, id) -> { })
+                .setNegativeButton(R.string.connection_alert_dialog_negative_button, (dialog, id) -> dialog.cancel());
+
+        return builder.create();
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        setButtonAction();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        bind = null;
+    }
+
+    private void setButtonAction() {
+        ((AlertDialog) Objects.requireNonNull(getDialog())).getButton(AlertDialog.BUTTON_NEUTRAL).setTextColor(getResources().getColor(R.color.colorAccent, null));
+        ((AlertDialog) Objects.requireNonNull(getDialog())).getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(getResources().getColor(R.color.colorAccent, null));
+        ((AlertDialog) Objects.requireNonNull(getDialog())).getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(getResources().getColor(R.color.colorAccent, null));
+
+        ((AlertDialog) Objects.requireNonNull(getDialog())).getButton(AlertDialog.BUTTON_NEUTRAL).setOnClickListener(v -> {
+            PreferenceUtil.getInstance(requireContext()).setDataSavingMode(true);
+            Objects.requireNonNull(getDialog()).dismiss();
+        });
+    }
+}

app/src/main/java/com/cappielloantonio/play/util/PreferenceUtil.java

@@ -162,4 +162,10 @@ public class PreferenceUtil {
     public final boolean isDataSavingMode() {
         return mPreferences.getBoolean(DATA_SAVING_MODE, false);
     }
+
+    public void setDataSavingMode(Boolean isDataSavingModeEnabled) {
+        final SharedPreferences.Editor editor = mPreferences.edit();
+        editor.putBoolean(DATA_SAVING_MODE, isDataSavingModeEnabled);
+        editor.apply();
+    }
 }

app/src/main/res/layout/dialog_connection_alert.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="24dp"
+        android:layout_marginBottom="4dp"
+        android:layout_marginEnd="24dp"
+        android:gravity="center"
+        android:text="@string/connection_alert_dialog_summary" />
+</LinearLayout>

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

@@ -184,4 +184,9 @@
     <string name="server_unreachable_dialog_positive_button">Continue anyway</string>
     <string name="server_unreachable_dialog_title">Server unreachable</string>
     <string name="server_unreachable_dialog_summary">The requested server is unavailable. Please contact your support and describe your issue.</string>
+    <string name="connection_alert_dialog_title">Wi-Fi not connected</string>
+    <string name="connection_alert_dialog_positive_button">Continue anyway</string>
+    <string name="connection_alert_dialog_neutral_button">Enable data saver</string>
+    <string name="connection_alert_dialog_negative_button">Cancel</string>
+    <string name="connection_alert_dialog_summary">Access to the Subsonic server on connections other than WiFi has been restricted. To prevent this alert dialod from reappearing, disable the connection check in the app settings.</string>
 </resources>