Android 程序类型已经存在意味着什么？

我是android studio的初学者，我遇到了运行时错误

Program type already present: 
android.support.v7.util.AsyncListUtil$DataCallback
Message{kind=ERROR, text=Program type already present: 
android.support.v7.util.AsyncListUtil$DataCallback, sources=[Unknown source 
file], tool name=Optional.of(D8)}

我搜索了一下，什么也找不到，我想可能和我的清单文件有关。这是我的舱单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.dadei.cashmob">

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_CALENDAR" />
<uses-permission android:name="android.permission.WRITE_CALENDAR" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.VIBRATE" />
<meta-data android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />
 <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:hardwareAccelerated="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".MainActivity"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".Homescreen"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
    <activity
        android:name=".signup"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
    <activity android:name=".videos"></activity>
</application>

</manifest>

---

我同步gradle时没有出错，只是以防万一

您有两个相同的权限：

android.permission.WRITE\u EXTERNAL\u STORAGE

尝试删除one@Yupi那没用，它仍然给我一个错误你能显示你的

app gradle

吗这可能与你在

gradle

@Yupi中添加的依赖项有问题我在同步时添加了我的app gradle依赖项，但我没有收到错误。问题是不止一个dependencie实现了

android.support.v7.util.AsyncListUtil$DataCallback

，其中发生冲突并抛出错误。尝试将依赖项更新为最新版本。我知道您有：

27.1.0

和

27.1.1

还可以检查您包含的自定义库。同时将

编译

更改为

实现

implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.google.android.gms:play-services-location:15.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-auth:15.0.0'
implementation 'com.google.firebase:firebase-database:15.0.0'
implementation 'com.google.android.gms:play-services-auth:15.0.0'
implementation 'com.android.support:support-v4:27.1.1'
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-ads:15.0.0'
compile 'com.google.android.gms:play-services-base:15.0.0'
compile 'com.google.android.gms:play-services-ads:15.0.0'
compile 'com.google.android.gms:play-services-location:15.0.0'
compile 'com.google.android.gms:play-services-plus:15.0.0'
implementation 'com.android.support:design:27.1.0'
compile 'com.android.support:support-v4:27.1.0'
compile 'com.android.support:recyclerview-v7:27.1.0'

compile 'com.android.support:multidex:1.0.3'


compile 'com.google.android.gms:play-services-ads:15.0.0'
compile 'com.android.support:support-annotations:27.1.1'

compile 'com.squareup.picasso:picasso:2.5.2' //for Inmobi
compile name: 'adcolony-sdk-3.2.1', ext: 'aar'
compile name: 'mmedia-6.4.0', ext: 'aar'
compile name: 'mobvista_alphab', ext: 'aar'
compile name: 'mobvista_appwall', ext: 'aar'
compile name: 'mobvista_appwallext', ext: 'aar'
compile name: 'mobvista_common', ext: 'aar'
compile name: 'mobvista_interstitial', ext: 'aar'
compile name: 'mobvista_mvdownloads', ext: 'aar'
compile name: 'mobvista_mvjscommon', ext: 'aar'
compile name: 'mobvista_mvnative', ext: 'aar'
compile name: 'mobvista_nativeex', ext: 'aar'
compile name: 'mobvista_offerwall', ext: 'aar'
compile name: 'mobvista_playercommon', ext: 'aar'
compile name: 'mobvista_reward', ext: 'aar'
compile name: 'mobvista_videocommon', ext: 'aar'
compile name: 'mobvista_videofeeds', ext: 'aar'