Why would google maps not show up in flutter?
1,140
You defined on your API key on your AndroidManifest.xml
file like this:
<meta-data android:name="com.google.android.geo.API_KEY"
android:value="key=AIzaSyAvQUefjL5----------------"/>
This is causing error because of the key=
in the string which makes the Google Maps SDK recognize an invalid API key that is why your map is only showing a grey screen.
The API key should be defined like this instead, removing the key=
from the string itself:
<meta-data android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyAvQUefjL5----------------"/>
Author by
Harsh Kothari
Updated on December 24, 2022Comments
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Harsh Kothari over 1 year
I have generated an API key from google cloud and also enabled Maps SDK for android and ios. Also i entered the API key in : AndroidManifest.xml. But the map won't show up, just a grey screen. Like the one below. Therefore what is the ultimate solution to this problem?
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.ambulance_tracker"> <!-- io.flutter.app.FlutterApplication is an android.app.Application that calls FlutterMain.startInitialization(this); in its onCreate method. In most cases you can leave this as-is, but you if you want to provide additional functionality it is fine to subclass or reimplement FlutterApplication and put your custom class here. --> <application android:name="io.flutter.app.FlutterApplication" android:label="ambulance_tracker" android:icon="@mipmap/ic_launcher"> <activity android:name=".MainActivity" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize"> <!-- Specifies an Android theme to apply to this Activity as soon as the Android process has started. This theme is visible to the user while the Flutter UI initializes. After that, this theme continues to determine the Window background behind the Flutter UI. --> <meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/NormalTheme" /> <!-- Displays an Android View that continues showing the launch screen Drawable until Flutter paints its first frame, then this splash screen fades out. A splash screen is useful to avoid any visual gap between the end of Android's launch screen and the painting of Flutter's first frame. --> <meta-data android:name="io.flutter.embedding.android.SplashScreenDrawable" android:resource="@drawable/launch_background" /> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <!-- Don't delete the meta-data below. This is used by the Flutter tool to generate GeneratedPluginRegistrant.java --> <meta-data android:name="flutterEmbedding" android:value="2" /> <meta-data android:name="com.google.android.geo.API_KEY" android:value="key=AIzaSyAvQUefjL5----------------"/> </application> </manifest>
gmap.dart() file:
import 'dart:collection'; import 'package:flutter/material.dart'; import 'package:google_maps_flutter/google_maps_flutter.dart'; class GMap extends StatelessWidget { @override Widget build(BuildContext context) { return SafeArea( child: Scaffold( appBar: AppBar( backgroundColor: Colors.deepPurple, ), body: SingleChildScrollView( child: Column( children: <Widget>[ Padding( padding: const EdgeInsets.only(top: 8.0), child: Container( height: MediaQuery.of(context).size.height / 2, width: MediaQuery.of(context).size.width, child: GoogleMap( initialCameraPosition: CameraPosition(target: LatLng(29.9792, 31.1342)), zoomGesturesEnabled: true, ), ), ) ], ), ), ), ); } }
main.dart()
import 'package:ambulance_tracker/Screens/gmap.dart'; import 'package:flutter/material.dart'; import 'package:location/location.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'GMap Try', debugShowCheckedModeBanner: false, theme: ThemeData( primarySwatch: Colors.deepPurple, ), home: GMap(), ); } }
pubspec.yaml:
name: ambulance_tracker description: A new Flutter project. # The following line prevents the package from being accidentally published to # pub.dev using `pub publish`. This is preferred for private packages. publish_to: 'none' # Remove this line if you wish to publish to pub.dev # The following defines the version and build number for your application. # A version number is three numbers separated by dots, like 1.2.43 # followed by an optional build number separated by a +. # Both the version and the builder number may be overridden in flutter # build by specifying --build-name and --build-number, respectively. # In Android, build-name is used as versionName while build-number used as versionCode. # Read more about Android versioning at https://developer.android.com/studio/publish/versioning # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. # Read more about iOS versioning at # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html version: 1.0.0+1 environment: sdk: ">=2.7.0 <3.0.0" dependencies: flutter: sdk: flutter # The following adds the Cupertino Icons font to your application. # Use with the CupertinoIcons class for iOS style icons. cupertino_icons: ^0.1.3 firebase_auth: ^0.18.0+1 firebase_core: ^0.5.0 flutter_svg: ^0.18.0 google_maps_flutter: ^0.5.32 location: ^2.5.0 dev_dependencies: flutter_test: sdk: flutter # For information on the generic Dart part of this file, see the # following page: https://dart.dev/tools/pub/pubspec # The following section is specific to Flutter. flutter: # The following line ensures that the Material Icons font is # included with your application, so that you can use the icons in # the material Icons class. uses-material-design: true # To add assets to your application, add an assets section, like this: assets: - assets/images/ # - images/a_dot_ham.jpeg # An image asset can refer to one or more resolution-specific "variants", see # https://flutter.dev/assets-and-images/#resolution-aware. # For details regarding adding assets from package dependencies, see # https://flutter.dev/assets-and-images/#from-packages # To add custom fonts to your application, add a fonts section here, # in this "flutter" section. Each entry in this list should have a # "family" key with the font family name, and a "fonts" key with a # list giving the asset and other descriptors for the font. For # example: # fonts: # - family: Schyler # fonts: # - asset: fonts/Schyler-Regular.ttf # - asset: fonts/Schyler-Italic.ttf # style: italic # - family: Trajan Pro # fonts: # - asset: fonts/TrajanPro.ttf # - asset: fonts/TrajanPro_Bold.ttf # weight: 700 # # For details regarding fonts from package dependencies, # see https://flutter.dev/custom-fonts/#from-packages
Image of the app screen:
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Bilal Aslam over 3 yearsHave you checked internet connectivity on the device?
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Harsh Kothari over 3 yearsshould i connect my emulator to a wifi?
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Bilal Aslam over 3 yearsyes definitely.
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Harsh Kothari over 3 yearscan you recommend any such method? That will be helpful!
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Bilal Aslam over 3 yearsAre you having trouble connecting to wifi?
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Harsh Kothari over 3 yearsyes though i changed the dns of the router to 8.8.8.8
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Bilal Aslam over 3 years
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Bilal Aslam over 3 yearsbtw you have enabled wifi, just like you would do on normal device. right?
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Harsh Kothari over 3 yearsthanks for the help, problem was solved after connecting to wifi.
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