FAQ¶

Have a question that isn't part of the FAQ? Check StackOverflow with the tag #coil or search Github discussions.

Can Coil be used with Java projects or mixed Kotlin/Java projects?¶

Yes! Read here.

How do I preload an image?¶

Read here.

How do I enable logging?¶

Set logger(DebugLogger()) when constructing your ImageLoader.

How do I target Java 8?¶

Coil requires Java 8 bytecode. This is enabled by default on the Android Gradle Plugin 4.2.0 and later and the Kotlin Gradle Plugin 1.5.0 and later. If you're using older versions of those plugins add the following to your Gradle build script:

Gradle (.gradle):

android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

Gradle Kotlin DSL (.gradle.kts):

android {
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

How do I get development snapshots?¶

Add the snapshots repository to your list of repositories:

Gradle (.gradle):

allprojects {
    repositories {
        maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
    }
}

Gradle Kotlin DSL (.gradle.kts):

allprojects {
    repositories {
        maven("https://oss.sonatype.org/content/repositories/snapshots")
    }
}

Then depend on the same artifacts with the latest snapshot version.