与 Firebase 集成后应用崩溃

Question

我正在构建我的第一个使用 Google Maps API 活动的 Android 应用程序。 它在模拟器上运行良好。 但是在添加 Firebase 后，它在模拟器上崩溃了：

Unfortunately, MyApp has stopped

经过大量搜索，我发现检查logcat很有用，它显示以下异常：

09-15 03:30:39.836 3541-3541/com.example.googlemapsapi E/AndroidRuntime: FATAL EXCEPTION: main
    java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions
    at com.google.firebase.FirebaseApp.zzek(Unknown Source)
    at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1058)
    at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
    at android.app.ActivityThread.installProvider(ActivityThread.java:4560)
    at android.app.ActivityThread.installContentProviders(ActivityThread.java:4190)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4132)
    at android.app.ActivityThread.access$1300(ActivityThread.java:130)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4745)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
    at dalvik.system.NativeStart.main(Native Method)

我已经完成了这些解决方案中的步骤

• 解决方案1
• 解决方案2

但问题仍然存在。

MapsActivity.java 文件：

package com.example.googlemapsapi;

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);
    }


    /**
     * 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));
    */
        LatLng busLocation = new LatLng(37.783879,-122.401254);

        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(busLocation, 12));
        mMap.addMarker(new MarkerOptions()
                .position(busLocation)
                .title("Code the Road Bus")
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.bus)));

    }
}

build.gradle 文件：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.3'
        classpath 'com.google.gms:google-services:3.0.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

configurations {
    all*.exclude group: 'com.android.support', module: 'support-v4'
}

应用程序/build.gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.2"

    defaultConfig {
        applicationId "com.example.googlemapsapi"
        minSdkVersion 16
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
/*
    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE-FIREBASE.txt'
        exclude 'META-INF/NOTICE'

    }
    */
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.2.0'
    compile 'com.android.support:multidex:1.0.1'
    compile 'com.google.android.gms:play-services:9.4.0'
    compile 'com.google.firebase:firebase-core:9.4.0'
   // compile 'com.firebase:firebase-client-android:2.5.2+'
}
apply plugin: 'com.google.gms.google-services'

我做错了什么？ 提前致谢，塞缪尔·法里德

Answer 1

请更新播放服务或在真实设备上尝试，它会起作用。 检查这个。

Answer 2

更新您的播放服务库您的项目类路径是-classpath 'com.google.gms:google-services:3.0.0' 并且依赖项是 compile 'com.google.android.gms:play-services:9.4.0' compile ' com.google.firebase:firebase-core:9.4.0'

所以更新你的播放服务库

Answer 3

对我来说，我的 android 模拟器和 android 设备都崩溃了，因为我在<project_dir>/<app_module>/build.gradle导入了 crashlytics 依赖<project_dir>/<app_module>/build.gradle如下所示： implementation 'com.google.firebase:firebase-crashlytics:17.2.1' 。 注释掉这一行后，我的应用程序停止崩溃。 我不确定为什么 crashlytics 导致应用程序崩溃的原因，但我确实在使用和不使用此导入行的情况下对其进行了测试，它对我有用。