Different app names for different build flavors in Android?

Question

I have 2 build flavors, say, flavor1 and flavor2

I would like my application to be named, say, "AppFlavor1" when I build for flavor1 and "AppFlavor2" when I build for flavor 2

Here is a my manifest source's snippet

<application
    android:name=".PApplication"
    android:allowBackup="true"
    android:hardwareAccelerated="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".ui.activities.SplashActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

Here is a gradle file's source snippet

apply plugin: 'com.android.application'
    android {

        compileSdkVersion 25
        buildToolsVersion '26.0.2'
        flavorDimensions "default"
        defaultConfig {
            minSdkVersion 16
            targetSdkVersion 25
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
            multiDexEnabled true
        }

        signingConfigs {
            release {
            }
        }

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

        productFlavors.whenObjectAdded { flavor ->
            flavor.ext.set("app_name", "")
        }

        productFlavors {
            photographer_prod {
                app_name = "flovor1name"
                buildConfigField "String", "API_URL", ""
                buildConfigField "boolean", "IS_PHOTOGRAPHER_APP", "true"
                applicationId "me.flovor.package_1"
                versionCode 1048
                versionName "1.0.48"
            }

            agent_prod {
                app_name = "flovor2name"
                buildConfigField "String", "API_URL", ""
                buildConfigField "boolean", "IS_PHOTOGRAPHER_APP", "false"
                applicationId "me.flovor.package_2"
                versionCode 1016
                versionName "1.0.16"
            }


        }

        applicationVariants.all { variant ->
            def flavor = variant.productFlavors*.name[0]
            def appName = variant.productFlavors*.app_name[0]

            variant.mergeResources.doLast {
                File valuesFile = file("${variant.mergeResources.outputDir}/values/values.xml")
                if (valuesFile.exists()) {
                    String content = valuesFile.getText('UTF-8')
                    content = content.replaceAll("app_name_string", appName)
                    valuesFile.write(content, 'UTF-8')
                } else {
                    println("File: " + valuesFile.path + " does not exist")
                }
            }

            if (variant.buildType.name == "debug") {
                return;
            }

            variant.outputs.each { output ->
                def SEP = "_"
                def buildType = variant.variantData.variantConfiguration.buildType.name
                def version = variant.versionName
                def date = new Date();
                def formattedDate = date.format('ddMMyy_HHmm')

                def newApkName = flavor + SEP + buildType + SEP + version + SEP + formattedDate + ".apk"

                output.outputFileName = new File(output.outputFile.parent, newApkName)
            }
        }
    }

In string.xml default value is

<string name="app_name">app_name_string</string>

When I try to build both flavors realize version, the app name is always app_name_string (String from string.xml file)

How do i solve this problem? thanks

Answer 1

Just add the string

<string name="app_name">app_name_string</string>

in the folders:

app/src/photographer_prod/res/values/strings.xml
app/src/agent_prod/res/values/strings.xml

You can also add resource values directly to your build.gradle file

productFlavors { 
    photographer_prod {
      resValue "string", "app_name", "the app name.."
    }
    agent_prod {
      resValue "string", "app_name", "the app name.."
    }
  }

Answer 2

In addition to Gabriele Mariotti's answer, make sure application / android:label attribute's value is set to @string/app_name in your AndroidManifest.xml file.