快速解决Program type already present:com.xx.xx

android SDK版本 29
根据报错的信息，显示重复加载类

在app目录下

dependencies {
// implementation fileTree(dir: ‘libs’, include: [’.jar’,’.aar’])
implementation fileTree(dir: “…/…/…/cocos2d-x/cocos/platform/android/java/libs”, include: [’*.jar’])
implementation project(’:libcocos2dx’)
implementation(name: ‘mobad_normal_pub_329_2019_10_16’, ext: ‘aar’)
implementation ‘com.android.support:appcompat-v7:26.0.0’
implementation ‘com.squareup.wire:wire-runtime:2.2.0’
implementation ‘pl.droidsonroids.gif:android-gif-drawable:1.2.6’
}

把第一行注释就解决了这个错误。