我正在尝试在用户使用 map_view 插件点击地址时显示交互式 map 。我遇到的问题是每次我点击地址时，应用程序都会崩溃。
这是我的项目结构/配置(详细信息):
lib\main.dart
import 'package:flutter/material.dart';
import 'package:map_view/map_view.dart';
import './pages/product.dart';
void main() {
MapView.setApiKey(<my_google_developer_api_key>);
runApp(MyApp());
}
lib\pages\product.dart
import 'package:flutter/material.dart';
import 'package:map_view/map_view.dart';
class ProductPage extends StatelessWidget {
void _showMap() {
final List<Marker> markers = <Marker>[
Marker('position', 'Position', product.location.latitude,
product.location.longitude)
];
final cameraPosition = CameraPosition(
Location(product.location.latitude, product.location.longitude), 14.0);
final mapView = MapView();
mapView.show(
MapOptions(
initialCameraPosition: cameraPosition,
mapViewType: MapViewType.normal,
title: 'Product Location'),
toolbarActions: [
ToolbarAction('Close', 1),
]);
mapView.onToolbarAction.listen((int id) {
if (id == 1) {
mapView.dismiss();
}
});
mapView.onMapReady.listen((_) {
mapView.setMarkers(markers);
});
}
}
pubspec.yaml
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: ^0.1.2
scoped_model: ^1.0.1
http: ^0.12.0+2
shared_preferences: ^0.5.3+4
rxdart: ^0.22.1+1
map_view: ^0.0.14
location: ^1.4.1
android\build.gradle
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.1.0'
classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.50'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
subprojects {
project.configurations.all {
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'com.android.support'
&& !details.requested.name.contains('multidex')) {
details.useVersion '27.1.1'
}
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
android\app\src\main\AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.easy_list">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<!-- 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="easy_list"
android:icon="@mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="@style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- This keeps the window background of the activity showing
until Flutter renders its first frame. It can be removed if
there is no splash screen (such as the default splash screen
defined in @style/LaunchTheme). -->
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name="com.apptreesoftware.mapview.MapActivity" android:theme="@style/Theme.AppCompat.Light.DarkActionBar"/>
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value=<my-google-developer-api-key>/>
<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version"/>
<meta-data android:name="com.google.android.geo.API_KEY" android:value=<my-google-developer-api-key>/>
</application>
</manifest>
控制台显示的错误信息
I/flutter ( 5555): {showUserLocation: false, showMyLocationButton: false, showCompassButton:
false, hideToolbar: false, cameraPosition: {latitude: 21.0277644, longitude: 105.8341598, tim
e: 0, altitude: 0.0, speed: 0.0, bearing: 0.0, horizontalAccuracy: 0.0, verticalAccuracy: 0.0
, zoom: 14.0, tilt: 0.0}, title: Product Location, mapViewType: normal}
W/art ( 5555): Before Android 4.1, method android.graphics.PorterDuffColorFilter android.
support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffCo
lorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have i
ncorrectly overridden the package-private method in android.graphics.drawable.Drawable
I/zzbz ( 5555): Making Creator dynamically
I/art ( 5555): Enter while loop.
I/DynamiteModule( 5555): Considering local module com.google.android.gms.maps_dynamite:0 and
remote module com.google.android.gms.maps_dynamite:221
I/DynamiteModule( 5555): Selected remote version of com.google.android.gms.maps_dynamite, ver
sion >= 221
W/System ( 5555): ClassLoader referenced unknown path:
W/System ( 5555): ClassLoader referenced unknown path: /data/user_de/0/com.google.android.gm
s/app_chimera/m/00000071/n/armeabi-v7a
W/System ( 5555): ClassLoader referenced unknown path: /data/user_de/0/com.google.android.gm
s/app_chimera/m/00000071/n/armeabi
I/Google Maps Android API( 5555): Google Play services client version: 12451000
I/Google Maps Android API( 5555): Google Play services package version: 18382017
D/AndroidRuntime( 5555): Shutting down VM
E/AndroidRuntime( 5555): FATAL EXCEPTION: main
E/AndroidRuntime( 5555): Process: com.example.easy_list, PID: 5555
E/AndroidRuntime( 5555): java.lang.RuntimeException: Unable to start activity ComponentInfo{c
om.example.easy_list/com.apptreesoftware.mapview.MapActivity}: android.view.InflateException:
Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
E/AndroidRuntime( 5555): at android.app.ActivityThread.performLaunchActivity(ActivityT
hread.java:2724)
E/AndroidRuntime( 5555): at android.app.ActivityThread.handleLaunchActivity(ActivityTh
read.java:2789)
E/AndroidRuntime( 5555): at android.app.ActivityThread.-wrap12(ActivityThread.java)
E/AndroidRuntime( 5555): at android.app.ActivityThread$H.handleMessage(ActivityThread.
java:1527)
E/AndroidRuntime( 5555): at android.os.Handler.dispatchMessage(Handler.java:110)
E/AndroidRuntime( 5555): at android.os.Looper.loop(Looper.java:203)
E/AndroidRuntime( 5555): at android.app.ActivityThread.main(ActivityThread.java:6251)
E/AndroidRuntime( 5555): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 5555): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
(ZygoteInit.java:1063)
E/AndroidRuntime( 5555): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:92
4)
E/AndroidRuntime( 5555): Caused by: android.view.InflateException: Binary XML file line #2: B
inary XML file line #2: Error inflating class fragment
E/AndroidRuntime( 5555): Caused by: android.view.InflateException: Binary XML file line #2: E
rror inflating class fragment
E/AndroidRuntime( 5555): Caused by: java.lang.RuntimeException: The API key can only be speci
fied once. It is recommended that you use the meta-data tag with the name: com.google.android
.geo.API_KEY in the <application> element of AndroidManifest.xml
E/AndroidRuntime( 5555): at com.google.maps.api.android.lib6.drd.r.b(:com.google.andro
id.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-260264002):23)
E/AndroidRuntime( 5555): at com.google.maps.api.android.lib6.auth.f.a(:com.google.andr
oid.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-260264002):10)
E/AndroidRuntime( 5555): at com.google.maps.api.android.lib6.impl.f.a(:com.google.andr
oid.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-260264002):41)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.internal.CreatorImpl.a(:com.go
ogle.android.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-260264002):61)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.internal.CreatorImpl.newMapFra
gmentDelegate(:com.google.android.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-26026400
2):25)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.internal.j.a(:com.google.andro
id.gms.dynamite_mapsdynamite@18382046@18.3.82 (040306-260264002):73)
E/AndroidRuntime( 5555): at hs.onTransact(:com.google.android.gms.dynamite_mapsdynamit
e@18382046@18.3.82 (040306-260264002):4)
E/AndroidRuntime( 5555): at android.os.Binder.transact(Binder.java:504)
E/AndroidRuntime( 5555): at com.google.android.gms.internal.maps.zza.transactAndReadEx
ception(Unknown Source)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.internal.zzf.zzc(Unknown Sourc
e)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.SupportMapFragment$zzb.zzc(Unk
nown Source)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.SupportMapFragment$zzb.createD
elegate(Unknown Source)
E/AndroidRuntime( 5555): at com.google.android.gms.dynamic.DeferredLifecycleHelper.zza
(Unknown Source)
E/AndroidRuntime( 5555): at com.google.android.gms.dynamic.DeferredLifecycleHelper.onI
nflate(Unknown Source)
E/AndroidRuntime( 5555): at com.google.android.gms.maps.SupportMapFragment.onInflate(U
nknown Source)
E/AndroidRuntime( 5555): at android.support.v4.app.Fragment.onInflate(Fragment.java:13
02)
E/AndroidRuntime( 5555): at android.support.v4.app.FragmentManagerImpl.onCreateView(Fr
agmentManager.java:3714)
E/AndroidRuntime( 5555): at android.support.v4.app.FragmentController.onCreateView(Fra
gmentController.java:114)
E/AndroidRuntime( 5555): at android.support.v4.app.FragmentActivity.dispatchFragmentsO
nCreateView(FragmentActivity.java:374)
E/AndroidRuntime( 5555): at android.support.v4.app.BaseFragmentActivityApi14.onCreateV
iew(BaseFragmentActivityApi14.java:39)
E/AndroidRuntime( 5555): at android.support.v4.app.FragmentActivity.onCreateView(Fragm
entActivity.java:68)
E/AndroidRuntime( 5555): at android.view.LayoutInflater.createViewFromTag(LayoutInflat
er.java:777)
E/AndroidRuntime( 5555): at android.view.LayoutInflater.createViewFromTag(LayoutInflat
er.java:727)
E/AndroidRuntime( 5555): at android.view.LayoutInflater.inflate(LayoutInflater.java:49
5)
E/AndroidRuntime( 5555): at android.view.LayoutInflater.inflate(LayoutInflater.java:42
6)
E/AndroidRuntime( 5555): at android.view.LayoutInflater.inflate(LayoutInflater.java:37
7)
E/AndroidRuntime( 5555): at android.support.v7.app.AppCompatDelegateImplV9.setContentV
iew(AppCompatDelegateImplV9.java:287)
E/AndroidRuntime( 5555): at android.support.v7.app.AppCompatActivity.setContentView(Ap
pCompatActivity.java:139)
E/AndroidRuntime( 5555): at com.apptreesoftware.mapview.MapActivity.onCreate(MapActivi
ty.kt:31)
E/AndroidRuntime( 5555): at android.app.Activity.performCreate(Activity.java:6666)
E/AndroidRuntime( 5555): at android.app.Instrumentation.callActivityOnCreate(Instrumen
tation.java:1118)
E/AndroidRuntime( 5555): at android.app.ActivityThread.performLaunchActivity(ActivityT
hread.java:2677)
E/AndroidRuntime( 5555): at android.app.ActivityThread.handleLaunchActivity(ActivityTh
read.java:2789)
E/AndroidRuntime( 5555): at android.app.ActivityThread.-wrap12(ActivityThread.java)
E/AndroidRuntime( 5555): at android.app.ActivityThread$H.handleMessage(ActivityThread.
java:1527)
E/AndroidRuntime( 5555): at android.os.Handler.dispatchMessage(Handler.java:110)
E/AndroidRuntime( 5555): at android.os.Looper.loop(Looper.java:203)
E/AndroidRuntime( 5555): at android.app.ActivityThread.main(ActivityThread.java:6251)
E/AndroidRuntime( 5555): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 5555): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
(ZygoteInit.java:1063)
E/AndroidRuntime( 5555): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:92
4)
Lost connection to device.
我希望交互式 map 显示在屏幕上，但应用却崩溃了。任何帮助表示赞赏。提前致谢。
最佳答案
你案例的主要问题是:
E/AndroidRuntime( 5555): Caused by: java.lang.RuntimeException: The API key can only be speci
fied once. It is recommended that you use the meta-data tag with the name: com.google.android
.geo.API_KEY in the <application> element of AndroidManifest.xml
尝试删除这一行:
<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value=<my-google-developer-api-key>/>
然后再次运行....
关于android - Flutter:尝试在 Android 上使用 map_view 显示交互式 map 时应用程序崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57487142/