Build variants (debug, release) in Android Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a debug build variant in the Gradle build script.

Android Kotlin

android {
    buildTypes {
        debug {
            isMinifyEnabled = [1]
        }
    }
}

Drag options to blanks, or click blank then click option'

A0

Btrue

Cnull

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Setting isMinifyEnabled to true in debug causes harder debugging.

Using null or 0 instead of a boolean value.

In debug builds, minification is usually disabled, so isMinifyEnabled should be false.

2fill in blank

medium

Complete the code to define a release build variant with code shrinking enabled.

Android Kotlin

android {
    buildTypes {
        release {
            isMinifyEnabled = [1]
        }
    }
}

Drag options to blanks, or click blank then click option'

Afalse

Btrue

Cnull

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting isMinifyEnabled to false in release reduces optimization.

Using null or 0 instead of a boolean value.

Release builds usually enable minification to reduce app size, so isMinifyEnabled should be true.

3fill in blank

hard

Fix the error in the release build variant to enable ProGuard rules.

Android Kotlin

android {
    buildTypes {
        release {
            proguardFiles(getDefaultProguardFile([1]), "proguard-rules.pro")
        }
    }
}

Drag options to blanks, or click blank then click option'

A"proguard-android-optimize.txt"

B"proguard-android.txt"

C"proguard-android-debug.txt"

D"proguard-android-release.txt"

Attempts:

3 left

💡 Hint

Common Mistakes

Using debug or non-optimized ProGuard files in release builds.

Missing quotes around the file name.

The correct default ProGuard file for release builds is proguard-android-optimize.txt.

4fill in blank

hard

Fill both blanks to define a build variant with signing config and minification.

Android Kotlin

android {
    buildTypes {
        release {
            signingConfig = [1]
            isMinifyEnabled = [2]
        }
    }
}

Drag options to blanks, or click blank then click option'

AsigningConfigs.release

BsigningConfigs.debug

Ctrue

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using debug signing config for release builds.

Disabling minification in release builds.

Release builds use the release signing config and enable minification.

5fill in blank

hard

Fill all three blanks to define a debug build variant with applicationIdSuffix and debuggable flag.

Android Kotlin

android {
    buildTypes {
        debug {
            applicationIdSuffix = [1]
            isDebuggable = [2]
            versionNameSuffix = [3]
        }
    }
}

Drag options to blanks, or click blank then click option'

A".debug"

Btrue

C"-DEBUG"

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using false for isDebuggable in debug builds.

Omitting suffixes for debug builds.

Debug builds often add a suffix to the app ID and version name and set debuggable to true.