How To Add Online Login System In Andlua Project

Introduction

Kaise hain aap sab? Pichhle tutorial mein humne seekha tha ki kaise AndLua+ ka use karke apps ko customize kiya jaata hai. Aaj hum ek step aage badh rahe hain. Aaj hum seekhenge ki apne banaye hue app mein ek mazboot aur secure Online Login System kaise joda jaaye.

Kyun yeh zaroori hai? Maan lijiye aapne ek personal diary app banayi ya koi premium tool jo sirf aap aur aapke trusted dost hi use kar sakein. Agar uska login system offline hai, yani password app ke andar hi stored hai, to koi bhi technically sound person easily usse break kar sakta hai. Is risk ko khatm karne ke liye, online verification ka istemal karna best hai.

Aaj hum ek aisa hi system banayenge jahan user ka username aur password directly internet se verify hoga, specifically Pastebin ki madad se. Yeh ek simple, free, aur effective tarika hai chhote projects ke liye.

Chaliye, bina deri kiye, apna tutorial shuru karte hain!

Prerequisites: Kya Kya Chahiye Hoga?

Shuruat karne se pehle, yeh ensure kar lein ki aapke paas yeh sab cheezein maujood hain:

AndLua+ App: Aapka main coding environment, jismein aap project banayenge.
MT Manager: File management aur editing ke liye, taaki aap code files ko easily edit kar saken.
Internet Connection: Online system ban raha hai, isliye internet ka hona zaroori hai.
Basic Knowledge: AndLua+ projects ko open, edit, aur run karne ki basic samajh.

Step 1: Project Edit

Agar aapke existing project mein pehle se hi koi basic (offline) login system laga hua hai, to use pehle hata dena best rahega. Do alag login systems aapas mein conflict karenge aur app crash ho sakti hai.

Apna AndLua+ project khollein.
Wo file dhoondhein jahan login ka code likha hua hai (mostly main.lua ya login.lua).
Us code section ko completely comment out kar dein ya delete kar dein.
Yeh aapke liye ek clean slate taiyar karega, jahan aap naya code bina kisi confusion ke add kar paayenge.

Tip: Code ko delete karne ke bajaye, use comment out (-- use karke) kar dein. Agar kabhi future mein zaroorat pade, to aap use wapas activate kar sakte hain.

Step 2: Function File Ko Import Karna

Naya system likhna shuru karne se pehle, hum ek ready-made function ka istemal karenge. Yeh function humara saara heavy kaal (heavy lifting) karega, jaise internet se data fetch karna aur credentials match karna.

Pehle to, yeh function file aapko kahi se source karni padegi (jaise kisi tutorial provider se).
File ko download karne ke baad, use MT Manager ki help se open karein.
Poora code copy kar lein.

Step 3: Function Ko Apne Project Mein Paste Karna

Ab humne jo code copy kiya hai, use apne asli project mein daalna hai.

AndLua+ wapas kholle aur usi file mein jaayein jahan aapne puraana login code hataaya tha.
Code paste karne ke liye ek sahi jagah dhoondhein. Ideally, ise activity.onCreate() function ke andar ya bahar, kisi easily accessible jagah paste karein.
Code paste kar dein aur file ko save kar lein.

Yeh function aapke project ka dusra dimaag ban jayega, jo backend se data lekar aayega.

Step 4: Apni Login Layout Ko Upgrade Karna

Offline system mein shayad aapke paas sirf ek password field thi. Online system ke liye, humein dono username aur password ki zaroorat padegi. Isliye apni user interface (UI) ko update karna hoga.

Apne project ke layout.lua file ko khollein.
Wahan pe, jo bhi existing fields hain (jaise password field), unke upar ek nayi EditText field add karein username ke liye.

Dhyaan Rakhein: values (username aur password) bilkul waise hi honi chahiye jaise aapne apne function code mein use ki hui hain. Agar code mein username hai aur aapne layout mein userName likh diya, to system kaam nahi karega.

Step 5: UI Ko Saaf-Suthra Aur Aakarshak Banana

Ab fields to add ho gayi hain, par inhe visually appealing bhi to banana hai!

Consistency: Buttons aur fields ke size, margin, aur padding same rakhein. Yeh layout ko professional look degi.
Design: Login button ko aala decoration dijiye. Use rounded corners dein, gradient color dein, ya shadow add karein.
User-Friendly: hint property ka sahī istemal karein taaki user ko samajh aaye kis field mein kya daalna hai.

Ek acchi UI user ka pehla impression hoti hai. Isse achha banayein.

Step 6: Pastebin Backend Ko Set Karna

Yeh sabse important step hai. Humare function ko verify karne ke liye kahi na kahi to credentials chahiye honge! Hum Pastebin ka istemal ek simple online database ki tarah karenge.

Apne browser mein jaayein aur https://pastebin.com/ open karein.
Agar aapke paas account nahi hai to pehle ek free account bana lein.
“Create New Paste” par click karein.
Content yaani likhne ki jagah par, apna username aur password ek specific format mein likhein. Jaise:textusername=YourActualUsername password=YourActualPassword(Yahan YourActualUsername aur YourActualPassword ki jagah woh values daalein jo aap apne users ko dena chahte hain).
Paste Title dein, jaise “My App Login Credentials”.
Paste Expiry ko “Never” par set kar dein.
Create Paste button dabayein.

Ab, apni banayi hui paste par jaayein aur “RAW” button par click karein. Ye aapko ek naye tab mein sirf plain text dikhayega. Us naye tab ka URL (address) copy kar lein. Yahi aapka RAW Link hai.

Step 7: Project Mein Link Daalna

Ab humein apne AndLua+ function ko yeh batana hai ki data kahan se laana hai.

Apne project ke code mein us function ke andar jaayein.
Wahan aapko koi line milegi jahan ek URL variable set ki gayi hogi, jaise url = "https://pastebin.com/raw/abc123".
Is URL ki jagah par, ab aapne jo just RAW link copy kiya hai, use paste kar dein.
File ko save kar lein.

Ab aapka app directly aapke Pastebin paste se credentials fetch karega.

Step 8: System Ko Test Karna

Ab maza aane wala hai! Apna project save karein aur use Run ya Preview karein.

App open karein.
Sahi credentials daalein (wohi jo aapne Pastebin pe daale the) → Aapka app successfully login ho jana chahiye aur aapko next screen ya success message dikhana chahiye.
Galat credentials daal kar dekhein → App ko error message show karna chahiye.

Agar login fail hota hai to in cheezon ko check karein:

Kya aapne Pastebin ka RAW link sahi daala hai?
Kya Pastebin ka content (username=... password=...) bilulk sahi format mein hai? Spelling aur capitalization (chhote-bade letters) theek hain?
Kya layout ki IDs (username, password) aur code ki IDs mein koi spelling mistake to nahi hai?

Step 9: Common Errors & Troubleshooting

“Login Failed” Hi Aata Hai: 99% problem Pastebin link ya content mein hi hogi. Dobara check karein.
App Crash Ho Jaati Hai: Code paste karte waqt koi syntax error aa gayi hai. Code mein commas, brackets dobara check karein.

Step 10: Extra Features Ke Vichar

Basic system kaam kar raha hai? To ise aur behtar banayiye!

Multiple Users: Pastebin par ek se zyada users add karne ke liye, alag-alag lines mein add karein: user1,pass1 user2,pass2 admin,1234Aur apne function code ko thoda modify karein taaki yeh har line ko check kare.
Welcome Message: Login successful hone par print("Welcome, " .. username) jaise code se user ko welcome karein.
Logout Button: Agli activity mein ek logout button add karein, jo user ko wapas login screen par le jaye.

Security Note

Doston, yeh Pastebin method sirf learning aur small-scale personal projects ke liye hai. Yeh ek fully secure method nahi hai kyunki koi bhi agar RAW link jaan le, to credentials padh sakta hai.

Asli commercial apps ke liye aapko chahiye:

Proper backend (jaise Firebase, MySQL).
Password encryption.
Secure APIs.

Isliye, is method ko sirf practice aur apne chhote private tools banane ke liye hi use karein.

Conclusion

Aaj humne seekha ki kaise ek simple par effective online login system banaya jaata hai AndLua+ mein. Humne function ko integrate kiya, UI ko design kiya, Pastebin ko backend ki tarah use kiya, aur system ko test kiya.

Yeh aapke projects mein professionalism aur security ki ek layer add karta hai. Ab aap apne tools ko safely share kar sakte hain, bina yeh dar ke koi unauthorized person use access kar lega.

Umeed karta hoon yeh guide aapke kaam aayi hogi. Agar koi sawal ho, to niche comment zaroor kijiyeega. Agli post mein milte hain kisi aur interesting topic ke saath!

– DevelopEye Tutorials