Hello, I'm trying to run the Google Maps application on a real device. But when I launch, the application stops.

Log:

FATAL EXCEPTION: main Process: com.example.nikiz.googlemaps, PID: 21216 java.lang.NoClassDefFoundError: com.google.android.gms.R$string at com.google.android.gms.common.internal.zzah.<init>(Unknown Source) at com.google.firebase.FirebaseOptions.fromResource(Unknown Source) at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) at android.content.ContentProvider.attachInfo(ContentProvider.java:1591) at android.content.ContentProvider.attachInfo(ContentProvider.java:1562) at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) at android.app.ActivityThread.installProvider(ActivityThread.java:5272) at android.app.ActivityThread.installContentProviders(ActivityThread.java:4867) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4750) at android.app.ActivityThread.access$1600(ActivityThread.java:179) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1384) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:146) at android.app.ActivityThread.main(ActivityThread.java:5641) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1288) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1104) at dalvik.system.NativeStart.main(Native Method)

Gradle:

 apply plugin: 'com.android.application' android { compileSdkVersion 24 buildToolsVersion "22.0.1" defaultConfig { applicationId "com.example.nikiz.googlemaps" minSdkVersion 15 targetSdkVersion 24 multiDexEnabled true versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:24.2.1' compile 'com.google.android.gms:play-services:9.8.0' compile 'com.android.support:multidex:1.0.1' testCompile 'junit:junit:4.12' }

AndroidManifest.xml:

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.nikiz.myapplicationmaps"> <!-- The ACCESS_COARSE/FINE_LOCATION permissions are not required to use Google Maps Android API v2, but you must specify either coarse or fine location permissions for the 'MyLocation' functionality. --> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <!-- The API key for Google Maps-based APIs is defined as a string resource. (See the file "res/values/google_maps_api.xml"). Note that the API key is linked to the encryption key used to sign the APK. You need a different API key for each encryption key, including the release key that is used to sign the APK for publishing. You can define the keys for the debug and release targets in src/debug/ and src/release/. --> <meta-data android:name="com.google.android.geo.API_KEY" android:value="@string/google_maps_key" /> <activity android:name=".MapsActivity" android:label="@string/title_activity_maps"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>

MapsActivity.java:

 package com.example.nikiz.myapplicationmaps; import android.content.Context; import android.os.Bundle; import android.support.multidex.MultiDex; import android.support.v4.app.FragmentActivity; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.OnMapReadyCallback; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.MarkerOptions; public class MapsActivity extends FragmentActivity implements OnMapReadyCallback { private GoogleMap mMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_maps); // Obtain the SupportMapFragment and get notified when the map is ready to be used. SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map); mapFragment.getMapAsync(this); } @Override protected void attachBaseContext(Context base) { super.attachBaseContext(base); MultiDex.install(this); } /** * Manipulates the map once available. * This callback is triggered when the map is ready to be used. * This is where we can add markers or lines, add listeners or move the camera. In this case, * we just add a marker near Sydney, Australia. * If Google Play services is not installed on the device, the user will be prompted to install * it inside the SupportMapFragment. This method will only be triggered once the user has * installed Google Play services and returned to the app. */ @Override public void onMapReady(GoogleMap googleMap) { mMap = googleMap; // Add a marker in Sydney and move the camera LatLng sydney = new LatLng(-34, 151); mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney)); } }
  • Well, expose your code analyze - elik
  • The fact is that the code is the most standard, I just got the API key and inserted it into the manifest. Everything Else - Google Maps Activity - NikiZ

1 answer 1

Add to build.gradle

 dependencies { compile 'com.android.support:multidex:1.0.1' }
  • And application it is not necessary to inherit MultiDexApplication? developer.android.com/studio/build/multidex.html - tse
  • In general, why is this happening: I created the Google Maps Activity, inserted the api-key into the manifest and just launched it. As a result, the error is that the number of method references in a dex file cannot exceed 64k . As a result, dependencies had to add multiDexEnabled true . Why it happens? - NikiZ
  • @tse is optional. You can simply specify the name parameter for the application in the manifest. Or override attachBaseContext. The author knows better what suits him better. - Sergey Gornostaev
  • The description of the multiDexEnabled parameter in the official documentation. And the very first link in Google , for those who can not in English. - Sergey Gornostaev
  • Thank you very much. I redefined attachBaseContext, but the error remained. - NikiZ