# Root Summary:[Nested Classes](https://developer.android.com/reference/android/support/test/espresso/Root#nestedclasses)\|[Methods](https://developer.android.com/reference/android/support/test/espresso/Root#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/test/espresso/Root#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/test/espresso/Root#) # Root | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public final class Root ` ` extends `[Object](https://developer.android.com/reference/java/lang/Object.html)` `` ` |---|------------------------------------| | [java.lang.Object](https://developer.android.com/reference/java/lang/Object.html) || | ↳ | android.support.test.espresso.Root |
*** ** * ** *** Represents a root view in the application and optionally the layout params of the window holding it. This class is used internally to determine which view root to run user provided matchers against it is not part of the public api. ## Summary | ### Nested classes || |----------|-----------------------------------------------------------------------------------------------------------| | ` class` | [Root.Builder](https://developer.android.com/reference/android/support/test/espresso/Root.Builder)
| | ### Public methods || |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[View](https://developer.android.com/reference/android/view/View.html) | ` `[getDecorView](https://developer.android.com/reference/android/support/test/espresso/Root#getDecorView())`() ` | | ` `[EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`<`[WindowManager.LayoutParams](https://developer.android.com/reference/android/view/WindowManager.LayoutParams.html)`>` | ` `[getWindowLayoutParams](https://developer.android.com/reference/android/support/test/espresso/Root#getWindowLayoutParams())`() ` | | ` boolean` | ` `[isReady](https://developer.android.com/reference/android/support/test/espresso/Root#isReady())`() ` Checks if the[Root](https://developer.android.com/reference/android/support/test/espresso/Root)is ready. | | ` `[String](https://developer.android.com/reference/java/lang/String.html) | ` `[toString](https://developer.android.com/reference/android/support/test/espresso/Root#toString())`() ` | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/test/espresso/Root#)From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object.html)` ` |-------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object.html) | ` clone() ` | | ` boolean` | ` equals(`[Object](https://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` void` | ` finalize() ` | | ` final `[Class](https://developer.android.com/reference/java/lang/Class.html)`` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` `[String](https://developer.android.com/reference/java/lang/String.html) | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || ## Public methods ### getDecorView ``` View getDecorView () ```

| Returns || |------------------------------------------------------------------------|--------| | [View](https://developer.android.com/reference/android/view/View.html) |
| ### getWindowLayoutParams ``` EspressoOptional getWindowLayoutParams () ```

| Returns || |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------| | [EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`<`[WindowManager.LayoutParams](https://developer.android.com/reference/android/view/WindowManager.LayoutParams.html)`>` |
| ### isReady ``` boolean isReady () ``` Checks if the[Root](https://developer.android.com/reference/android/support/test/espresso/Root)is ready. The UI is no longer in flux if layout of the root view is not being requested and the root view has window focus or is focusable.
| Returns || |-----------|-----------------------------------| | `boolean` | if the root view has focus
| ### toString ``` String toString () ```

| Returns || |-------------------------------------------------------------------------|--------| | [String](https://developer.android.com/reference/java/lang/String.html) |
| - ## Interfaces - [EspressoException](https://developer.android.com/reference/android/support/test/espresso/EspressoException) - [FailureHandler](https://developer.android.com/reference/android/support/test/espresso/FailureHandler) - [IdlingResource](https://developer.android.com/reference/android/support/test/espresso/IdlingResource) - [IdlingResource.ResourceCallback](https://developer.android.com/reference/android/support/test/espresso/IdlingResource.ResourceCallback) - [UiController](https://developer.android.com/reference/android/support/test/espresso/UiController) - [ViewAction](https://developer.android.com/reference/android/support/test/espresso/ViewAction) - [ViewAssertion](https://developer.android.com/reference/android/support/test/espresso/ViewAssertion) - [ViewFinder](https://developer.android.com/reference/android/support/test/espresso/ViewFinder) - [ViewInteractionComponent](https://developer.android.com/reference/android/support/test/espresso/ViewInteractionComponent) - ## Classes - [AmbiguousViewMatcherException.Builder](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException.Builder) - [DataInteraction](https://developer.android.com/reference/android/support/test/espresso/DataInteraction) - [DataInteraction.DisplayDataMatcher](https://developer.android.com/reference/android/support/test/espresso/DataInteraction.DisplayDataMatcher) - [Espresso](https://developer.android.com/reference/android/support/test/espresso/Espresso) - [IdlingPolicies](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicies) - [IdlingPolicy](https://developer.android.com/reference/android/support/test/espresso/IdlingPolicy) - [IdlingRegistry](https://developer.android.com/reference/android/support/test/espresso/IdlingRegistry) - [NoMatchingViewException.Builder](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException.Builder) - [PerformException.Builder](https://developer.android.com/reference/android/support/test/espresso/PerformException.Builder) - [Root](https://developer.android.com/reference/android/support/test/espresso/Root) - [Root.Builder](https://developer.android.com/reference/android/support/test/espresso/Root.Builder) - [ViewInteraction](https://developer.android.com/reference/android/support/test/espresso/ViewInteraction) - ## Exceptions - [AmbiguousViewMatcherException](https://developer.android.com/reference/android/support/test/espresso/AmbiguousViewMatcherException) - [AppNotIdleException](https://developer.android.com/reference/android/support/test/espresso/AppNotIdleException) - [IdlingResourceTimeoutException](https://developer.android.com/reference/android/support/test/espresso/IdlingResourceTimeoutException) - [InjectEventSecurityException](https://developer.android.com/reference/android/support/test/espresso/InjectEventSecurityException) - [NoActivityResumedException](https://developer.android.com/reference/android/support/test/espresso/NoActivityResumedException) - [NoMatchingRootException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingRootException) - [NoMatchingViewException](https://developer.android.com/reference/android/support/test/espresso/NoMatchingViewException) - [PerformException](https://developer.android.com/reference/android/support/test/espresso/PerformException)