程序类型已存在 - 错误答案

【问题标题】：Program type already present - ERROR程序类型已存在 - 错误
【发布时间】：2018-06-18 06:14:17
【问题描述】：

尝试运行我的应用时出现此错误 - 程序类型已存在：android.support.v4.app.BackStackRecord$Op

我已经看完了这篇文章—— Program type already present: android.support.v4.app.BackStackRecord 还是没解决问题，下面是我的gradle文件供参考-

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.google"
        minSdkVersion 15
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"

        multiDexEnabled true
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {

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

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.android.gms:play-services:9.4.0'
//    // retrofit, gson
    implementation 'com.google.code.gson:gson:2.6.2'
    implementation 'com.squareup.retrofit2:retrofit:2.0.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.0.2'

}

【问题讨论】：

添加你的项目级gradle文件代码。
出错的那一行显示完整的错误代码
Program type already present: android.support.v4.app.BackStackRecord的可能重复

标签： android gradle runtime-error

【解决方案1】：

尝试更改apply plugin: 'com.android.application' 和/或applicationId "com.google"

【讨论】：

【解决方案2】：

检查您的项目级 gradle 文件，如下所示..

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

buildscript {
    ext.kotlin_version = '1.2.41'

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

也尝试检查这一行。

implementation 'com.android.support:appcompat-v7:27.0.2'

【讨论】：