Android Wigdet Theme Change

Question

How can I set the theme change in the widget when the theme change is made in my Android application?

I tried such a method, but I did not get any results.

 int themeMode = mContext.getSharedPreferences("DH_MODE", Context.MODE_PRIVATE).getInt("DH_MODE", 0);

        switch (themeMode){
            case 0: {
                // Gündüz modu
                rv.setImageViewResource(R.id.img_flame, R.drawable.evening_logo);
                rv.setTextViewText(R.id.txt_title," Gündüz modu");
                rv.setTextColor(R.id.txt_title, Color.parseColor("#000000"));//siyah

                break;
            }
            case 1: {
                //Gece modu
                rv.setImageViewResource(R.id.img_flame, R.drawable.evening_logo); // logolar da değişecekse diye imageview i de ekledim
                rv.setTextViewText(R.id.txt_title," Gece modu");
                rv.setTextColor(R.id.txt_title, Color.parseColor("#ffffff"));//beyaz
                break;
            }
            case 2: {
                //Gün batımı modu
                rv.setImageViewResource(R.id.img_flame, R.drawable.evening_logo);
                rv.setTextViewText(R.id.txt_title," gün batımı modu ");
                rv.setTextColor(R.id.txt_title, Color.parseColor("#ffffff"));//beyaz
                break;
            }
            case 3:{
                rv.setImageViewResource(R.id.img_flame, R.drawable.evening_logo);
                rv.setTextViewText(R.id.txt_title," akşam modu");
                rv.setTextColor(R.id.txt_title, Color.parseColor("#ffffff"));//beyaz
            }
        }

Answer 1

Try updating the widget when the theme in your app changes in your MainActivity or the activity the theme change gets notified in:

    val widgetManagerObj = AppWidgetManager.getInstance(applicationContext)
    val appWidgetIdArr = widgetManagerObj.getAppWidgetIds(ComponentName(applicationContext, YourWidgetProvider::class.java))
    val refreshIntentObj = Intent(applicationContext, YourWidgetProvider::class.java)
    refreshIntentObj.action = STATUS_ACTION
    refreshIntentObj.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIdArr)
    sendBroadcast(refreshIntentObj)

And keep the code that you provided in your question the same. Tell me if it works :)