How to Send Play Store Update Push Notifications Using Firebase Cloud Messaging (FCM) Category: Android Development | Mobile App Marketing | Firebase When you publish a new version of your Android application on the Google Play Console, notifying existing users is key to driving updates and feature adoption. While in-app update prompts are common, sending a system-level Push Notification directly to the user's notification tray is one of the most direct ways to bring inactive users back. In this guide, we will walk step-by-step through setting up and dispatching an app update push notification via Firebase Cloud Messaging (FCM) using custom payload links. Step 1: Publish Your Release on Google Play Console Before triggering any notifications, ensure your updated Android App Bundle (AAB) or APK is fully rolled out and active on the Google Play Store. Example Release Details: Version Name: 1.14 Version Code: 15 ...
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Python Dictionaries: Accessing Values and Understanding Dictionary Slicing Python Programming Tutorial for Students In this lesson, we will learn how to create a Python dictionary, access values using dictionary keys, and understand why dictionary slicing such as d['bar':'baz'] produces an error. 1. What is a Dictionary in Python? A dictionary is a Python data structure that stores data as key-value pairs . For example: d = {'foo': 100, 'bar': 200, 'baz': 300} In this dictionary: 'foo' is a key and 100 is its value. 'bar' is a key and 200 is its value. 'baz' is a key and 300 is its value. The dictionary can be visualized as: Key Value foo 100 bar 200 baz 300 2. Accessing a Dictionary Value To ...
Hierarchy Star Reports v12 is Officially Live! We are thrilled to announce that the v12 update for Hierarchy Star Reports has officially launched and is rolling out to our users! We've just successfully deployed our latest broadcast notifications via Firebase Cloud Messaging to keep our community seamlessly connected to the newest features and improvements. Methodological Steps: How the v12 Update Notification Was Achieved Step 1: Open Firebase Console & Navigate to Messaging : Log into your Firebase project console, locate the engagement section in the navigation panel, and select Cloud Messaging . Step 2: Create a New Notification Campaign : Click on Create your first campaign or New campaign , and select Firebase Notification messages . Step 3: Define Notification Content : Input your title and body text ( Hierarchy Star Reports v12 is Live! and the update prompt) to set what your users will see. Step 4: Configure Targeting Cri...
Debugging LaTeX: Fixing `\hl{}` Highlights and Dynamic `\ref{}` Errors A practical guide to resolving broken hyper-references, space swallowing, and ?? rendering bugs in academic manuscripts. When revising academic manuscripts, highlighting newly added text using the soul package's \hl{} command is standard practice. However, nesting internal dynamic cross-references like \ref{sec:label} inside \hl{} often triggers unexpected layout glitches and broken references. The Root Cause The soul package parses text character-by-character to compute line breaks and highlighting geometry. This low-level token expansion leads to two primary issues: Macro Expansion Failure: \hl{} prevents \ref{} from expanding to read section numbers from the .aux file, resulting in broken ?? symbols. Space Swallowing: Non-breaking tildes ( ~ ) and whitespace around macro definitions get stripped, running words directly into each other. ...
How I Resolved Python Document Conversion Failures Without External Packages While generating a 24-point review response document for a journal submission, missing C-compiler tools in my local MSYS2 setup triggered ModuleNotFoundError and PEP 668 errors when installing python-docx . Here is how I bypassed the installation blockade and created the Word document using pure Python. 1. Identifying the Root Cause The library python-docx depends on lxml , which requires compilation during installation. In restricted terminal environments, pip fails to build these C-extensions, halting the entire workflow. 2. The Standard Library Strategy Instead of troubleshooting environment dependencies, I leveraged the fact that Microsoft Word natively renders HTML. Using Python's built-in html module, I built a zero-dependency script that formats data into styled HTML tables. 3. Execution Flow Escaped text content using html...
The successful implementation of push notifications in our Android entertainment application—verified using the Firebase Console and successfully delivering alerts to the notification tray—relied on a clear, structured methodology. We can systematically mirror and achieve this exact same architecture for an HTML-based Blogspot platform using the following methodological steps: Platform Initialization & SDK Setup: Just as the native Android app imports Firebase libraries via Gradle and google-services.json , the HTML-based Blogspot site integrates Firebase by injecting the core JavaScript SDKs directly into the custom XML template layout <head> section. Background Handler Configuration: While native Android utilizes a subclass of FirebaseMessagingService to manage background states and payload delivery, the web-tier Blogspot architecture achieves this by deploying a dedicated firebase-messaging-sw.js service worker script to handle push events independently o...
Methodical Guide to Integrating Firebase Messaging & Fixing Gradle Plugin Errors in Android Integrating Firebase Cloud Messaging (FCM) into an Android application is essential for handling push notifications. However, when working with Kotlin DSL ( build.gradle.kts ) in Android Studio, misconfiguring plugin declarations can trigger resolution errors. This tutorial provides a systematic, step-by-step approach to properly configure your build files and successfully implement Firebase Messaging. Step 1: Configure the Project-Level (Root) Build File Before any module can use the Google Services plugin, the root project must recognize it and specify its version. Open your root-level build.gradle.kts file. Inside the plugins block, add the Google Services plugin declaration with apply false : plugins { alias(libs.plugins.android.application) apply false alias(libs.plugins.kotlin.android) apply false id("com.google.gms.google-servi...
Android Studio: Ctrl + F9 vs. Clean & Rebuild Project If you have spent any time developing Android apps in Kotlin or Java, you have likely run into this frustrating scenario: you paste new image assets into res/drawable/ or add new view IDs in XML, but Android Studio keeps highlighting them in red with "Unresolved reference" . Understanding how Gradle builds your project—and knowing when to use Ctrl + F9 versus a full Clean & Rebuild —will save you hours of debugging phantom build errors. 1. Ctrl + F9 (Make Project) Pressing Ctrl + F9 (or Cmd + F9 on macOS) performs an incremental build . Gradle checks what changed since the last build and compiles only those specific files. Best Used For: Editing Kotlin or Java logic inside existing classes. Adjusting layout properties like padding , margin , or textColor . ...
A Step-by-Step Methodological Guide to Thesis Revisions and Version Control in Microsoft Word Managing corrections following a pre-data presentation, seminar defense, or peer review is one of the most critical stages of graduate research. Maintaining internal consistency, preserving structural integrity, and providing transparent proof of corrections to supervisors require a methodical editorial workflow. This guide outlines a standard academic workflow for handling manuscript revisions using Microsoft Word's built-in version control and tracking features. Phase 1: Establishing File Architecture and Version Control Before implementing panel corrections, establish an immutable baseline file to protect against corruption or accidental loss of complex mathematical notation. Baseline Preservation: Retain the exact document submitted to the panel as [Institution]_[Degree]_Thesis_ORIGINAL_[Milestone].docx . Active Wor...
How I Built an AI-Powered Anti-Counterfeit Drug Verification System with Python & Gradio A comprehensive tutorial on combining official registry lookups, TF-IDF character n-grams, Random Forest, Anomaly Detection, and barcode scanning into a real-time web application. Author: Idris Abdulhamood | Category: Machine Learning / HealthTech 1. The Problem: Counterfeit Pharmaceuticals Counterfeit and substandard medications pose a severe threat to public health worldwide, particularly in developing economies. Fraudulent actors often replicate genuine packaging while altering active ingredients, spoofing brand names, or manufacturing fake registration numbers (e.g., NAFDAC Registration Numbers). While official regulatory agencies maintain digital registries, manual verification can be slow, and traditional search engines fail when dealing with minor typos, corrupted registration formats, or novel counterfeit mutations. ...
🛡️ Building a Dual-Layer AI Engine for NAFDAC Drug Verification Combining Exact Database Lookups with Machine Learning Fraud Inference for Real-Time Pharmaceutical Anti-Counterfeiting. 1. System Architecture: The Dual-Layer Verification Flow Standard verification systems rely solely on exact string matching against government registries. However, counterfeiters frequently exploit this by using slight spelling variations or reusing authentic codes on fake packaging. To solve this, we built a Dual-Layer Verification Architecture : 🟢 Layer 1: Direct Registry Lookup (Deterministic) Performs an instant hash/normalized check against official NAFDAC records. If an exact match is found, it immediately confirms the item as AUTHENTIC (100% Confidence) without triggering AI compute overhead. 🟡 Layer 2: Machine Learning Inference Engine ...
Why & How We Generated Synthetic Counterfeit Data for AI Drug Verification 1. The "Why": Solving the Positive-Class Bias Problem When building an AI system to detect counterfeit pharmaceuticals, you face an immediate data challenge: official government registries (like the NAFDAC Greenbook) only record authentic, approved products. If you train a Machine Learning model exclusively on genuine drug records: The AI Learns Nothing About Fraud: It only sees "good" data, so it defaults to predicting that every drug is 100% authentic. Extreme Class Imbalance: Without negative samples (counterfeits), supervised classifiers like Random Forest cannot establish a decision boundary to separate genuine products from fraudulent ones. To teach an AI how to spot fake drugs, you must show it what fake drugs look like. Because there is no public "official database of counterfeit dr...
🕷️ Scraping NAFDAC Greenbook from A to Z: How I Extracted 8,600+ Official Records into CSV Author: Idris Abdulhamood | Category: Web Scraping, Data Engineering & Automation The NAFDAC Greenbook ( greenbook.nafdac.gov.ng ) is the official public portal for all approved drugs, medical devices, herbals, and biologics registered by the Nigerian government. For data analysts, researchers, or software engineers, having this database in a clean, structured .csv format opens up endless possibilities—from fraud detection systems to market research. However, getting this data off the website and into an Excel sheet wasn't as simple as running pandas.read_html() . Here is the complete journey of how I scraped the entire portal from A to Z—including the wall I hit, why fast scripts failed, and the solution that successfully captured all 8,608 official entries . 🛑 P...
How to Update a YouTube Channel Link in an Existing Android App Using Kotlin How to Update a YouTube Channel Link in an Existing Android App Using Kotlin Author: Engineer Abdulhameed Idris Adedamola Introduction One of the most common maintenance tasks in Android application development is updating external links after deployment. Businesses frequently change their official websites, YouTube channels, or social media accounts, and mobile applications must also be updated to reflect those changes. In this tutorial, we will update the YouTube channel link inside an existing Android application built with Kotlin without rebuilding the entire application. Scenario: The client migrated to a new YouTube channel and requested that the application open the new channel whenever users tap the YouTube icon. Step 1: Open the Android Project Launch Android Studio and open the existing project. Allow Gradle to finish syncing before making any modifications. S...
How to Transfer Shinhan Financial Certificate from PC to SOL Global App (Step-by-Step Guide 2026) Disclaimer: This is an independent educational tutorial and is not affiliated with or endorsed by Shinhan Bank. All trademarks belong to their respective owners. Introduction Transferring your Shinhan Financial Certificate from PC to mobile allows you to securely access banking services using the SOL Global app. This guide explains the process step by step in a simple and safe way. Step 1: Login to Shinhan Internet Banking Open the official Shinhan Internet Banking website Log in with your account credentials Go to Certificate Center or Security Section Step 2: Open Certificate Management Select Financial Certificate Management Complete identity verification if required Proceed with system security checks Step 3: Complete YesKey Verification A verification code will appear on your screen You will receive an SMS on your registered phone num...
Mastering Python Functions: Building a Dynamic Ticket Revenue Calculator Mastering Python Functions: Building a Dynamic Ticket Revenue Calculator Python Fundamentals • Clean Code • Tutorial When you first start learning Python, it’s easy to get comfortable writing linear, step-by-step code. You assign some variables, run a calculation, print the result, and call it a day. But what happens when your data changes? What if your theater goes from selling $7.99 matinee tickets to $16.99 IMAX blockbusters? If you hardcode your values, your code breaks—or worse, you're forced to rewrite it constantly. In this post, we’ll look at the evolution of a Theater Ticketing Calculator to see how Python functions allow you to write reusable, dynamic, and clean code. Step 1: The Basic Fixed-Price Function Let’s start simple. Imagine your theater has a flat rate of $7.99 per ticket. ...
Fixing the "Python Can't Open File" Error in Windows Command Prompt While learning Python, I encountered a common error when trying to run my first Python script from the Command Prompt. Instead of executing the program, Python displayed an error message saying it could not find the file. The Problem I tried running my Python script using: python C:\Users\X1\Desktop\HelloWorld.py But Python returned an error similar to: python: can't open file '...HelloWorld.py': [Errno 2] No such file or directory This error usually means Python cannot locate the specified file path, even though the file exists on the computer. What I Did to Fix It Instead of running the script directly from the current directory, I first navigated to the folder containing the file. cd Desktop Then I executed the script: python HelloWorld.py The Result hello world The program ran successfully, confirming that Python was installed correctly and the script...
I-GOA Feature Selection for Multimodal Biometrics Why I Added Feature Selection Using I-GOA in My Biometric System Introduction This article discusses the motivation behind integrating feature selection using the Improved Golf Optimization Algorithm (I-GOA) in a multimodal biometric recognition system based on fingerprint and palm vein traits. Disclaimer: This article presents general concepts and methodology discussions from an ongoing MPhil research project titled “Development of an Improved Golf-Optimization-Based Feature Selection Technique for Palm Vein and Fingerprint Recognition System.” The content is shared strictly for academic, educational, and research discussion purposes only. Detailed implementation, unpublished results, and proprietary research findings are not disclosed. Questions and Answers Why did you include a feature selection stage when some biometric system guides do not show it? Many biometric system diagrams provide simplified...