Cosname Dev

Welcome to Cosname Dev! I make step-by-step coding tutorials to help beginners learn programming and build real projects. Whether you’re into Java, Android app development, or web design, you’ll find clear guides, coding tips, and project walkthroughs here. Subscribe and start coding with confidence!

Topics covered: Java tutorials, Android Studio projects, HTML & CSS development, Firebase integration, coding problem-solving tips.

history:
1k subscribers 10/05/2022

“Your Android App Bundle is Signed with the Wrong Key” Error | Google Play Console Upload Issue
“Your Android App Bundle is Signed with the Wrong Key” Error | Google Play Console Upload Issue
Run Android Studio Emulator from Terminal | Open Virtual Device (AVD) via CMD/Command Line
Run Android Studio Emulator from Terminal | Open Virtual Device (AVD) via CMD/Command Line
Build a Modern Personal Website with AI (Step-by-Step Tutorial)
Build a Modern Personal Website with AI (Step-by-Step Tutorial)
How to Get Started On Status Saver App
How to Get Started On Status Saver App
How to Build a $4,000 Website – Full Cost and Process Explained
How to Build a $4,000 Website – Full Cost and Process Explained
How To Delete Repository In GitHub (2025 Updated)
How To Delete Repository In GitHub (2025 Updated)
Create a Signed App Bundle in Android Studio (2025 Guide)
Create a Signed App Bundle in Android Studio (2025 Guide)
Convert Python Script to EXE (Step-by-Step Guide)
Convert Python Script to EXE (Step-by-Step Guide)
Update Your Android App on Google Play Console (2025 Tutorial)
Update Your Android App on Google Play Console (2025 Tutorial)
What Happens When You Don’t Open an Android Studio Project for 2 Years?
What Happens When You Don’t Open an Android Studio Project for 2 Years?
Connect Firebase Database With Android Studio Directly (UPDATED) All inside Android Studio
Connect Firebase Database With Android Studio Directly (UPDATED) All inside Android Studio
Save, Share, and Enjoy – Discover the Power of Status Saver
Save, Share, and Enjoy – Discover the Power of Status Saver
Fix Icons Not Showing in Drawable Folder - Android Studio Solution (2025)
Fix Icons Not Showing in Drawable Folder - Android Studio Solution (2025)
Fix ‘Archive is Either in Unknown Format or Damaged’ Error When Opening ZIP Files (2025 Solution)
Fix ‘Archive is Either in Unknown Format or Damaged’ Error When Opening ZIP Files (2025 Solution)
How to Make an App for Beginners (2024) | Register, Login, Forget Password Forms
How to Make an App for Beginners (2024) | Register, Login, Forget Password Forms
How To Connect Firebase SDK to Android Studio Directly (2024 Guide)
How To Connect Firebase SDK to Android Studio Directly (2024 Guide)
Recycle Bin Hidden Tips And Secrets You Need To Know
Recycle Bin Hidden Tips And Secrets You Need To Know
This Windows Trick Saved My SDD and My HDD
This Windows Trick Saved My SDD and My HDD
How To Create YouTube Channel Using Phone | Updated Beginners Step By Step Guide (v21)
How To Create YouTube Channel Using Phone | Updated Beginners Step By Step Guide (v21)
How to Permanently Delete YouTube Channel Or Temporary Hide Your Channel | Step by Step (v22)
How to Permanently Delete YouTube Channel Or Temporary Hide Your Channel | Step by Step (v22)
Window 11 Setting, Taskbar, Accessibility | Windows 11 Tutorial (v18)
Window 11 Setting, Taskbar, Accessibility | Windows 11 Tutorial (v18)
How to encrypt a PDF File | Windows 11 Tutorial | Enter Password (v17)
How to encrypt a PDF File | Windows 11 Tutorial | Enter Password (v17)
How to Make Compress A Zip File | Windows 11 Tutorial (v16)
How to Make Compress A Zip File | Windows 11 Tutorial (v16)
How to Screen Record on Windows 10 - No Watermarks Or Time Limits. (v14)
How to Screen Record on Windows 10 - No Watermarks Or Time Limits. (v14)
Best Practice to Clean and Organize Your Desktop | Window 11/10 (v13)
Best Practice to Clean and Organize Your Desktop | Window 11/10 (v13)
How to Take a Screenshot on PC or Laptop any Windows 11 / 10 (v12)
How to Take a Screenshot on PC or Laptop any Windows 11 / 10 (v12)
How To Install Multiple Fonts On Windows 11/ Windows 10
How To Install Multiple Fonts On Windows 11/ Windows 10
How to Install Fonts And Change the Fonts Themes | Windows 11/10 ( v1)
How to Install Fonts And Change the Fonts Themes | Windows 11/10 ( v1)
How to Create a login and register form for x( Twitter) WORKING
How to Create a login and register form for x( Twitter) WORKING
The process of creating a working register form in your website. html and css only. NO JAVASCRIPT
The process of creating a working register form in your website. html and css only. NO JAVASCRIPT