签名APK中的FirebaseInitProvider错误，但不在调试中

Question

我有一个大问题。

我正在开发一个使用Firebase发送推送消息的应用。我按照谷歌的教程 - ＆gt; link

问题出现了，当我在应用程序打开时签署APK时，它会在事件显示之前崩溃，但这不会发生在我编码时（调试中的应用程序）

崩溃报告是：

java.lang.RuntimeException: Unable to get provider com.google.firebase.provider.FirebaseInitProvider: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.res.Resources.getResourcePackageName(int)' on a null object reference
    at android.app.ActivityThread.installProvider(ActivityThread.java:6770)
    at android.app.ActivityThread.installContentProviders(ActivityThread.java:6362)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6302)
    at android.app.ActivityThread.access$1800(ActivityThread.java:222)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1861)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:158)
    at android.app.ActivityThread.main(ActivityThread.java:7229)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.res.Resources.getResourcePackageName(int)' on a null object reference
    at com.google.android.gms.common.internal.zzah.<init>(Unknown Source)
    at com.google.firebase.FirebaseOptions.fromResource(Unknown Source)
    at com.google.firebase.FirebaseApp.zzbu(Unknown Source)
    at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1789)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1764)
    at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
    at android.app.ActivityThread.installProvider(ActivityThread.java:6767)
    ... 10 more

我在SO中看到不同的帖子，在build.gradle文件中未设置applicationId:xx.xx.xx时发生错误。但我知道了。

所以我不知道问题出在哪里，我不明白为什么在调试模式下它工作得很完美，但是在发布模式下不是。此外，我在app模块中有google-services.json文件。

我该如何解决？

在build.gradle文件（app）中：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "es.in2.otr.app.im"
        minSdkVersion 16
        targetSdkVersion 23
        multiDexEnabled true

        testApplicationId "es.in2.otr.app.im.test"
        testInstrumentationRunner "android.test.InstrumentationTestRunner"
    }
    dexOptions {
        javaMaxHeapSize "4g" //specify the heap size for the dex process
    }

    lintOptions{
        checkReleaseBuilds false
        abortOnError false
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }

    useLibrary 'org.apache.http.legacy'
}

dependencies {

    ...
    ...
    ...
    compile 'com.google.firebase:firebase-core:9.0.0'
    compile 'com.google.firebase:firebase-messaging:9.0.0'
    compile 'com.google.code.gson:gson:2.6.2'
    compile 'com.squareup.okhttp3:okhttp:3.4.1'
    compile 'com.squareup.okio:okio:1.9.0' /*Used for OKHTTP*/

    ...
    ...
    ...

    apply plugin: 'com.google.gms.google-services'
}

更新：

google-service.json和内容

的图片

{
  "project_info": {
    "project_number": "283882435243",
    "firebase_url": "https://XXXXX.firebaseio.com",
    "project_id": "XXXXX",
    "storage_bucket": "XXXXX.appspot.com"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": "1:XXXXX:android:XXXXX",
        "android_client_info": {
          "package_name": "es.in2.otr.app.im"
        }
      },
      "oauth_client": [
        {
          "client_id": "XXXXX.apps.googleusercontent.com",
          "client_type": 1,
          "android_info": {
            "package_name": "es.in2.otr.app.im",
            "certificate_hash": "A0XXXXXXXXXXXXXXXXXXXXXXXXXAA"
          }
        },
        {
          "client_id": "2XXXXX.apps.googleusercontent.com",
          "client_type": 3
        }
      ],
      "api_key": [
        {
          "current_key": "AIzaXXXXXXXXXXXXXXXXXXXXXXXXXUTM"
        }
      ],
      "services": {
        "analytics_service": {
          "status": 1
        },
        "appinvite_service": {
          "status": 2,
          "other_platform_oauth_client": [
            {
              "client_id": "XXXXX.apps.googleusercontent.com",
              "client_type": 3
            }
          ]
        },
        "ads_service": {
          "status": 2
        }
      }
    }
  ],
  "configuration_version": "1"
}

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