Invalid Color hex value

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

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

Tests

Source Code

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.

This lint check has an associated quickfix available in the IDE.

Example

Here is an example of lint warnings produced by this check:

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:

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 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.

Suppressing

You can suppress false positives using one of the following mechanisms:

formatted by Markdeep 1.18