(#) Invalid Color hex value !!! WARNING: Invalid Color hex value This is a warning. Id : `InvalidColorHexValue` Summary : Invalid Color hex value Severity : Warning Category : Correctness Platform : Any Vendor : Jetpack Compose Identifier : androidx.compose.ui.graphics Feedback : https://issuetracker.google.com/issues/new?component=612128 Min : Lint 8.0 and 8.1 Compiled : Lint 8.7+ Artifact : [androidx.compose.ui:ui-graphics-android](androidx_compose_ui_ui-graphics-android.md.html) Since : 1.5.0 Affects : Kotlin and Java files and test sources Editing : This check runs on the fly in the IDE editor Implementation : [Source Code](https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:/compose/ui/ui-graphics-lint/src/main/java/androidx/compose/ui/graphics/lint/ColorDetector.kt) Tests : [Source Code](https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:/compose/ui/ui-graphics-lint/src/test/java/androidx/compose/ui/graphics/lint/ColorDetectorTest.kt) Copyright Year : 2021 Creating a Color with a hex value requires a 32 bit value (such as 0xFF000000), with 8 bits being used per channel (ARGB). Not passing a full 32 bit value will result in channels being undefined / incorrect. !!! Tip This lint check has an associated quickfix available in the IDE. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text src/test/test.kt:6:Warning: Invalid Color hex value [InvalidColorHexValue] val color = Color(0x00000) ------- src/test/test.kt:7:Warning: Invalid Color hex value [InvalidColorHexValue] val color2 = Color(0xEEEEE) ------- src/test/test.kt:8:Warning: Invalid Color hex value [InvalidColorHexValue] val color3 = Color(0x00_0_0_0L) ----------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `src/test/test.kt`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~kotlin linenumbers package test import androidx.compose.ui.graphics.* val color = Color(0x00000) val color2 = Color(0xEEEEE) val color3 = Color(0x00_0_0_0L) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can also visit the [source code](https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:/compose/ui/ui-graphics-lint/src/test/java/androidx/compose/ui/graphics/lint/ColorDetectorTest.kt) for the unit tests for this check to see additional scenarios. The above example was automatically extracted from the first unit test found for this lint check, `ColorDetector.incorrectChannels`. To report a problem with this extracted sample, visit https://issuetracker.google.com/issues/new?component=612128. (##) Including !!! This is not a built-in check. To include it, add the below dependency to your project. ``` // build.gradle.kts implementation("androidx.compose.ui:ui-graphics-android:1.9.0-alpha01") // build.gradle implementation 'androidx.compose.ui:ui-graphics-android:1.9.0-alpha01' // build.gradle.kts with version catalogs: implementation(libs.ui.graphics.android) # libs.versions.toml [versions] ui-graphics-android = "1.9.0-alpha01" [libraries] # For clarity and text wrapping purposes the following declaration is # shown split up across lines, but in TOML it needs to be on a single # line (see https://github.com/toml-lang/toml/issues/516) so adjust # when pasting into libs.versions.toml: ui-graphics-android = { module = "androidx.compose.ui:ui-graphics-android", version.ref = "ui-graphics-android" } ``` 1.9.0-alpha01 is the version this documentation was generated from; there may be newer versions available. NOTE: These lint checks are **also** made available separate from the main library. You can also use `androidx.compose.ui:ui-graphics-lint:1.9.0-alpha01`. [Additional details about androidx.compose.ui:ui-graphics-android](androidx_compose_ui_ui-graphics-android.md.html). (##) Suppressing You can suppress false positives using one of the following mechanisms: * Using a suppression annotation like this on the enclosing element: ```kt // Kotlin @Suppress("InvalidColorHexValue") fun method() { Color(...) } ``` or ```java // Java @SuppressWarnings("InvalidColorHexValue") void method() { Color(...); } ``` * Using a suppression comment like this on the line above: ```kt //noinspection InvalidColorHexValue problematicStatement() ``` * Using a special `lint.xml` file in the source tree which turns off the check in that folder and any sub folder. A simple file might look like this: ```xml <?xml version="1.0" encoding="UTF-8"?> <lint> <issue id="InvalidColorHexValue" severity="ignore" /> </lint> ``` Instead of `ignore` you can also change the severity here, for example from `error` to `warning`. You can find additional documentation on how to filter issues by path, regular expression and so on [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html). * In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like ```gradle lintOptions { disable 'InvalidColorHexValue' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore InvalidColorHexValue ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).