Flutter google maps blank screen

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Flutter Google Maps Blank Screen Issue

If you are experiencing a blank screen issue when using Google Maps in your Flutter app, it is likely due to one of the following reasons:

  1. Lack of API key
  2. Missing required permissions
  3. Incorrect placement of the map widget

1. Lack of API key

In order to use Google Maps, you need to obtain an API key from the Google Cloud Console and include it in your app’s Android manifest file.

First, make sure you have created a project in the Google Cloud Console and enabled the Google Maps SDK for Android. Then, generate an API key and add it to your `AndroidManifest.xml` file, inside the `` tag:

        <application
            ...
            <meta-data
                android:name="com.google.android.geo.API_KEY"
                android:value="YOUR_API_KEY_HERE" />
            ...    
        </application>

Replace `YOUR_API_KEY_HERE` with the API key you obtained. This should resolve any blank screen issues caused by missing API key.

2. Missing required permissions

Ensure the necessary permissions are declared in your `AndroidManifest.xml` file to access the device’s location and interact with Google Maps services:

        <manifest ...>
            ...
            <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
            <!-- Include any other required permissions here -->
            ...
            <application ...>
                ...
            </application>
        </manifest>

Make sure you have added the appropriate permissions, such as `ACCESS_FINE_LOCATION`, based on your app’s requirements.

3. Incorrect placement of the map widget

Make sure you have placed the Google Maps widget in the correct position within your Flutter app’s widget hierarchy.

Here’s an example of how to add a Google Map widget to your app:

        import 'package:flutter/material.dart';
        import 'package:google_maps_flutter/google_maps_flutter.dart';
        
        class MyMapPage extends StatelessWidget {
          @override
          Widget build(BuildContext context) {
            return Scaffold(
              appBar: AppBar(
                title: Text('Map'),
              ),
              body: GoogleMap(
                initialCameraPosition: CameraPosition(
                  target: LatLng(37.4219999, -122.0840575),
                  zoom: 14,
                ),
              ),
            );
          }
        }

Make sure you have followed the necessary steps to set up Google Maps API in your Flutter project, including adding dependencies and applying required configuration.

By ensuring you have the correct API key, required permissions, and proper placement of the map widget, you should be able to resolve the blank screen issue in your Flutter Google Maps implementation.

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