SetBadgeAppIcon.java

package com.classicharmony.speechzilla.utils;

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;

import java.util.List;

public class SetBadgeAppIcon {

    public static void setBadge(Context context, int count) {
        String launcherClassName = getLauncherClassName(context);
        if (launcherClassName == null) {
            return;
        }

        try {
            Intent intent = new Intent("android.intent.action.BADGE_COUNT_UPDATE");
            intent.putExtra("badge_count", count);
            intent.putExtra("badge_count_package_name", context.getPackageName());
            intent.putExtra("badge_count_class_name", launcherClassName);
            context.sendBroadcast(intent);
        } catch (Exception ex) {
        }

    }

    public static String getLauncherClassName(Context context) {

        PackageManager pm = context.getPackageManager();

        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);

        try {
            List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, 0);
            for (ResolveInfo resolveInfo : resolveInfos) {
                String pkgName = resolveInfo.activityInfo.applicationInfo.packageName;
                if (pkgName.equalsIgnoreCase(context.getPackageName())) {
                    String className = resolveInfo.activityInfo.name;
                    return className;
                }
            }
        } catch (Exception ex) {
            return null;
        }

        return null;
    }


}