小编Jor*_*dis的帖子

我正在尝试在我的项目中添加firebase，但是当我实现'com.google.firebase:firebase-messaging:19.0.0'and时'com.google.firebase:firebase-core:17.0.0'。

build.gradle（这是错误）

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
 compileSdkVersion 28
 defaultConfig {
    applicationId "com.example.user.mikripoli"
    minSdkVersion 15
    targetSdkVersion 28
    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'
    }
 }

 dexOptions {
    javaMaxHeapSize "2g"
 }
}

dependencies {
 implementation 'com.roughike:bottom-bar:2.0'
 implementation 'com.android.support:support-v4:28.0.0'
 implementation 'com.android.support:exifinterface:28.0.0'
 implementation 'com.android.support:animated-vector-drawable:28.0.0'
 implementation 'com.flaviofaria:kenburnsview:1.0.7'
 implementation fileTree(include: ['*.jar'], dir: 'libs')
 implementation 'com.android.support:appcompat-v7:28.0.0'
 implementation 'com.android.support.constraint:constraint-layout:1.1.3'
 implementation 'com.android.support:design:28.0.0'
 implementation 'com.github.chrisbanes:PhotoView:2.1.4'
 implementation 'com.google.firebase:firebase-messaging:19.0.0'
 implementation 'com.google.firebase:firebase-core:17.0.0' …