MainThread
@Qualifier
@Retention(value = RetentionPolicy.RUNTIME)
public annotation MainThread
Annotates an Executor that executes tasks on the main thread
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Last updated 2025-07-17 UTC.
[null,null,["Last updated 2025-07-17 UTC."],[],[],null,["# MainThread\n==========\n\nArtifact: [androidx.test.espresso:espresso-core](/jetpack/androidx/releases/test-espresso) \n[View Source](https://cs.android.com/search?q=file:androidx/test/espresso/base/MainThread.java+class:androidx.test.espresso.base.MainThread)\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/androidx/test/espresso/base/MainThread \"View this page in Kotlin\") \\|Java\n\n\n```\n@Qualifier\n@Retention(value = RetentionPolicy.RUNTIME)\npublic annotation MainThread\n```\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nAnnotates an Executor that executes tasks on the main thread"]]