I just integrated Jacoco code coverage for junit and UI test in my android studio project.

I added following steps:

In my app level build.gradle file:

apply plugin: 'jacoco'

and then added below code inside android { }

debug {
            testCoverageEnabled = true
            enableAndroidTestCoverage = true
            enableUnitTestCoverage = true
        }

and then added below code:

jacoco {
    toolVersion = "0.8.8"
}

tasks.withType(Test).configureEach {
    jacoco {
        excludes = [
                "**/R.class",
                "**/R\$*.class",
                "**/BuildConfig.*",
                "**/Manifest*.*",
                "**/*Test*.*"
        ]
    }
}


android {
    // Iterate over all application variants (e.g., debug, release)
    applicationVariants.configureEach { variant ->
        // Extract variant name and capitalize the first letter
        def variantName = variant.name.capitalize()

        // Define task names for unit tests and Android tests
        def unitTests = "test${variantName}UnitTest"
        def androidTests = "connected${variantName}AndroidTest"

        // Register a JacocoReport task for code coverage analysis
        tasks.register("Jacoco${variantName}CodeCoverage", JacocoReport) {
            // Depend on unit tests and Android tests tasks
            dependsOn(unitTests, androidTests)

            // Set task grouping and description
            group = "Reporting"
            description = "Execute UI and unit tests, generate and combine Jacoco coverage report"

            // Configure reports to generate both XML and HTML formats
            reports {
                xml.required = true
                xml.outputLocation = layout.buildDirectory.file("jacoco/xml/${variantName}Coverage.xml")

                html.required = true
                html.outputLocation = layout.buildDirectory.dir("jacoco/html/${variantName}Coverage.html")
            }

            // Set source directories to the main source directory
            sourceDirectories.setFrom(layout.projectDirectory.dir("src/main"))

            // Set class directories to compiled Java and Kotlin classes, excluding specified exclusions
            classDirectories.setFrom(files(
                    fileTree(dir: layout.buildDirectory.dir("intermediates/javac/")) {
                        exclude "**/R.class", "**/R\$*.class", "**/BuildConfig.*", "**/Manifest*.*", "**/*Test*.*"
                    },
                    fileTree(dir: layout.buildDirectory.dir("tmp/kotlin-classes/")) {
                        exclude "**/R.class", "**/R\$*.class", "**/BuildConfig.*", "**/Manifest*.*", "**/*Test*.*"
                    }
            ))

            // Collect execution data from .exec and .ec files generated during test execution
            executionData.setFrom(files(
                    fileTree(dir: layout.buildDirectory) { include "**/*.exec", "**/*.ec" }
            ))
        }
    }
}

But still code coverage report not generated in my android studio.