Android can print multiple APP packages in the same set of code and install and run them on the same mobile phone. At the same time, the APP name and desktop icon are different

Need to be able to run on the same phone: only if the modified package name is different, can the same set of code run on the same phone.

Give different package names to the same set of codes, and set the APP name and desktop icon to judge which one is displayed according to each APP

In build.gradle under app:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.xxx.papplicationId1"
        minSdkVersion 14
        targetSdkVersion 27
        versionCode 1
        versionName '1.0.0'
        // --------------------------Pay attention here--------------------------
        // Add a sentence after the version name, which means that the dimension of the flavor dimension is the version number, so that the dimensions are unified
        flavorDimensions "versionCode"
        // -----------------------------------------------------------------------
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    
    buildToolsVersion '27.0.3'
    
    // --------------------------Pay attention here--------------------------
    productFlavors {
        // General app
        app1 {
            // Set applicationId (it is important here that two apk s with the same applicationId are installed in the same Android phone at the same time)
            applicationId "com.xxx.applicationId1"
            // Automatically generate @ string/app_name as the name of app1
            // Note: This is add. You can't have this field in string.xml. It will have the same name!!!
            resValue "string", "app_name", "app111"
            // Define fields such as app ﹣ icon, which are used in the Android manifest.xml file
            manifestPlaceholders = [app_icon     : "@mipmap/ic_launcher",
                                    app_roundicon: "@mipmap/ic_launcher",
                                    // Because each APP package name is different, the third-party key of each APP needs to be configured separately
                                    // Modify the map appkey in Android manifest.xml
                                    map_appkey   : "xxxxxxxxxxxxxx"]
        }
        // app2
        app2 {
            applicationId "com.xxx.applicationId2"
            resValue "string", "app_name", "app222"
            manifestPlaceholders = [app_icon     : "@mipmap/ic_launcher2",
                                    app_roundicon: "@mipmap/ic_launcher2",
                                    map_appkey   : "xxxxxxxxxxxxx"]
        }
    }
    // -----------------------------------------------------------------------

    // Remove the error of lint detection
    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }

    sourceSets.main {
        jniLibs.srcDirs = ['libs']
    }
}

dependencies {
	......
}

allprojects {
    repositories {
        flatDir {
            dirs 'libs'
        }
    }
}

Use

In Android manifest.xml:

<application
    android:name=".xxxxx"
    android:allowBackup="true"
    android:icon="${app_icon}"
    android:label="@string/app_name"
    android:roundIcon="${app_roundicon}"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
    tools:replace="android:allowBackup">
    <!--tools:replace="icon,label,theme">-->

    <!-- Map appkey, Use build.gradle Dynamic value in -->
    <meta-data
        android:name="com.amap.api.v2.apikey"
        android:value="${map_appkey}"/>

complete