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API_KEY_SETUP_STEPS.md

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🔑 API Key Setup - Step by Step

Current Problem:

{
  "cod": 401,
  "message": "Invalid API key. Please see https://openweathermap.org/faq#error401 for more info."
}

Solution: Get a Fresh API Key

Step 1: Create New Account (2 minutes)

  1. Go to: https://openweathermap.org/api
  2. Click "Sign Up"
  3. Fill out the form
  4. VERIFY YOUR EMAIL (check inbox, click verification link)

Step 2: Generate API Key (1 minute)

  1. Login to your account
  2. Go to "API keys" section
  3. Click "Generate" or "Create new key"
  4. Copy the new API key (32 characters long)

Step 3: Update Code (30 seconds)

  1. Open lib/services/weather_service.dart
  2. Find line 9: 
    static const String _apiKey = 'YOUR_API_KEY_HERE';
  3. Replace with your new key: 
    static const String _apiKey = 'your_new_api_key_here';

Step 4: Wait and Test (5 minutes)

  1. Wait 10 minutes for API key activation
  2. Save the file
  3. Restart the app: flutter run
  4. Test the weather feature

Why the Old Key Didn't Work:

  • ❌ Key might be from a different account
  • ❌ Account email not verified
  • ❌ Key was disabled or expired
  • ❌ Key format was incorrect

New Key Format:

  • ✅ 32 characters long
  • ✅ Mix of letters and numbers
  • ✅ Example: a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6

Free Tier Limits:

  • 1,000 API calls per day
  • 60 calls per minute
  • Perfect for development!

Success Indicators:

  • No 401 error
  • Real weather data appears
  • Temperature and conditions shown
  • No error messages