Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use MotionEvents method of androidx.test.espresso.action class

Best Appium-espresso-driver code snippet using androidx.test.espresso.action.MotionEvents

DragViewAction.kt

Source:DragViewAction.kt

...5import androidx.test.espresso.PerformException6import androidx.test.espresso.UiController7import androidx.test.espresso.ViewAction8import androidx.test.espresso.action.CoordinatesProvider9import androidx.test.espresso.action.MotionEvents10import androidx.test.espresso.action.PrecisionDescriber11import androidx.test.espresso.action.Swiper12import androidx.test.espresso.matcher.ViewMatchers.isCompletelyDisplayed13import androidx.test.espresso.util.HumanReadables14import org.hamcrest.Matcher15import org.hamcrest.core.AllOf.allOf16/**17 * The number of move events to send for each drag.18 */19private const val DRAG_STEP_COUNT = 1020/**21 * Duration between the last move event and the up event, in milliseconds.22 */23private const val WAIT_BEFORE_SENDING_UP_MS = 40024/**25 * A custom [ViewAction] that can be replicate the long press & drag action for espresso.26 *27 * Reference: https://android.googlesource.com/platform/frameworks/base/+/2ff41d4/core/tests/coretests/src/android/widget/espresso/DragAction.java28 */29class DragViewAction(30  private val startCoordinatesProvider: CoordinatesProvider,31  private val endCoordinatesProvider: CoordinatesProvider,32  private val precisionDescriber: PrecisionDescriber33) : ViewAction {34  // Factor 1.5 is needed, otherwise a long press is not safely detected.35  private val longPressTimeout = (ViewConfiguration.getLongPressTimeout() * 1.5f).toLong()36  override fun getDescription(): String = "long press and drag"37  override fun getConstraints(): Matcher<View> = allOf(isCompletelyDisplayed())38  override fun perform(uiController: UiController, view: View) {39    val startCoordinates = startCoordinatesProvider.calculateCoordinates(view)40    val endCoordinates = endCoordinatesProvider.calculateCoordinates(view)41    val precision = precisionDescriber.describePrecision()42    val downEvent = MotionEvents.sendDown(uiController, startCoordinates, precision).down43    var status: Swiper.Status44    try {45      uiController.loopMainThreadForAtLeast(longPressTimeout)46      val steps = interpolate(startCoordinates, endCoordinates)47      steps.forEachIndexed { _, step ->48        if (!MotionEvents.sendMovement(uiController, downEvent, step)) {49          MotionEvents.sendCancel(uiController, downEvent)50          status = Swiper.Status.FAILURE51        }52      }53      // Wait before sending up because some drag handling logic may discard move events54      // that has been sent immediately before the up event.55      uiController.loopMainThreadForAtLeast(WAIT_BEFORE_SENDING_UP_MS.toLong())56      status = if (!MotionEvents.sendUp(uiController, downEvent, endCoordinates)) {57        MotionEvents.sendCancel(uiController, downEvent)58        Swiper.Status.FAILURE59      } else {60        Swiper.Status.SUCCESS61      }62    } catch (re: RuntimeException) {63      // Using a RuntimeException because of the swiper class which generally throws a64      // Runtime Exception.65      throw PerformException.Builder()66        .withActionDescription(description)67        .withViewDescription(HumanReadables.describe(view))68        .withCause(re)69        .build()70    } finally {71      downEvent.recycle()...

CardFragmentTest.kt

Source:CardFragmentTest.kt

...6import androidx.test.core.app.ActivityScenario7import androidx.test.espresso.Espresso.onView8import androidx.test.espresso.UiController9import androidx.test.espresso.ViewAction10import androidx.test.espresso.action.MotionEvents11import androidx.test.espresso.action.ViewActions.*12import androidx.test.espresso.assertion.ViewAssertions.matches13import androidx.test.espresso.contrib.RecyclerViewActions14import androidx.test.espresso.matcher.ViewMatchers.*15import org.hamcrest.Matcher16import org.hamcrest.Matchers17import org.junit.Assert18import org.junit.Before19import org.junit.Test20private const val TIME_TO_LOAD_CARDS = 4600L21private const val TIME_TO_CHANGE_CARD = 2600L22class CardFragmentTest {23    @Before24    fun setup() {25        ActivityScenario.launch(MainActivity::class.java)26        onView(withId(R.id.random_button)).perform(click())27        Thread.sleep(TIME_TO_LOAD_CARDS)28    }29    @Test30    fun randomDeckButton() {31        onView(withId(R.id.card_list))32            .perform(RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(0, click()))33            .check(matches(isDisplayed()))34        onView(withId(R.id.random_button)).check(matches(isNotEnabled()))35        Thread.sleep(TIME_TO_LOAD_CARDS)36        onView(withId(R.id.random_button)).check(matches(isEnabled()))37        onView(withId(R.id.random_button)).perform(click())38        Thread.sleep(TIME_TO_LOAD_CARDS)39        onView(withId(R.id.random_button)).check(matches(isEnabled()))40    }41    @Test42    fun changeCards() {43        for (i in 0..7) {44            onView(withId(R.id.card_list))45                .perform(RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(i, click()))46            Thread.sleep(TIME_TO_CHANGE_CARD)47        }48    }49    @Test50    fun dragAndDrop() {51        onView(withId(R.id.card_list))52            .perform(dragAndMoveRightAndAssertMove(100f, 1f))53    }54    private fun createScreenShot(view: View): Bitmap {55        val bitmap = Bitmap.createBitmap(56            view.width,57            view.height, Bitmap.Config.ARGB_888858        )59        val canvas = Canvas(bitmap)60        view.draw(canvas)61        return bitmap62    }63    private fun dragAndMoveRightAndAssertMove(x: Float, y: Float): ViewAction {64        return object : ViewAction {65            override fun getConstraints(): Matcher<View>  =66                Matchers.allOf(67                    isAssignableFrom(RecyclerView::class.java),68                    isDisplayed()69                )70            override fun getDescription(): String = String()71            override fun perform(uiController: UiController, view: View) {72                val location = IntArray(2)73                view.getLocationOnScreen(location)74                val screenShotBefore = createScreenShot(view).getPixel(view.x.toInt(), view.y.toInt())75                val coordinates = floatArrayOf(x + location[0], y + location[1])76                val toCoordinates = floatArrayOf(x + location[0] + 450f, y + location[1])77                val precision = floatArrayOf(1f, 1f)78                val down: MotionEvent = MotionEvents.sendDown(uiController, coordinates, precision).down79                uiController.loopMainThreadForAtLeast(2000)80                MotionEvents.sendDown(uiController, coordinates, precision).longPress81                MotionEvents.sendMovement(uiController, down, toCoordinates)82                MotionEvents.sendUp(uiController, down, coordinates)83                val screenShotAfter = createScreenShot(view).getPixel(view.x.toInt(), view.y.toInt())84                Assert.assertNotEquals(screenShotBefore, screenShotAfter)85            }86        }87    }88}...

DragAndDropViewAction.kt

Source:DragAndDropViewAction.kt

...4import androidx.recyclerview.widget.RecyclerView5import androidx.test.espresso.UiController6import androidx.test.espresso.ViewAction7import androidx.test.espresso.action.GeneralLocation8import androidx.test.espresso.action.MotionEvents9import androidx.test.espresso.action.Press10import androidx.test.espresso.matcher.ViewMatchers11import org.hamcrest.Matcher12import org.hamcrest.core.AllOf13class DragAndDropViewAction(private val sourceViewPosition: Int,14                            private val targetViewPosition: Int) : ViewAction {15    override fun getConstraints(): Matcher<View> {16        return AllOf.allOf(17            ViewMatchers.isDisplayed(),18            ViewMatchers.isAssignableFrom(RecyclerView::class.java)19        )20    }21    override fun getDescription(): String {22        return "Drag and drop action"23    }24    override fun perform(uiController: UiController, view: View) {25        val recyclerView: RecyclerView = view as RecyclerView26        //Sending down27        recyclerView.scrollToPosition(sourceViewPosition)28        uiController.loopMainThreadUntilIdle()29        val sourceView = recyclerView.findViewHolderForAdapterPosition(sourceViewPosition)?.itemView30        val sourceViewCenter = GeneralLocation.VISIBLE_CENTER.calculateCoordinates(sourceView)31        val fingerPrecision = Press.FINGER.describePrecision()32        val downEvent = MotionEvents.sendDown(uiController, sourceViewCenter, fingerPrecision).down33        try {34            // Factor 1.5 is needed, otherwise a long press is not safely detected.35            val longPressTimeout = (ViewConfiguration.getLongPressTimeout() * 1.5f).toLong()36            uiController.loopMainThreadForAtLeast(longPressTimeout)37            //Drag to the position38            recyclerView.scrollToPosition(targetViewPosition)39            uiController.loopMainThreadUntilIdle()40            val targetView = recyclerView.findViewHolderForAdapterPosition(targetViewPosition)?.itemView41            val targetViewLocation = if (targetViewPosition > sourceViewPosition) {42                GeneralLocation.BOTTOM_CENTER.calculateCoordinates(targetView)43            } else {44                GeneralLocation.TOP_CENTER.calculateCoordinates(targetView)45            }46            val steps = interpolate(sourceViewCenter, targetViewLocation)47            for (i in 0 until steps.size) {48                if (!MotionEvents.sendMovement(uiController, downEvent, steps[i])) {49                    MotionEvents.sendCancel(uiController, downEvent)50                }51            }52            //Release53            if (!MotionEvents.sendUp(uiController, downEvent, targetViewLocation)) {54                MotionEvents.sendCancel(uiController, downEvent)55            }56        } finally {57            downEvent.recycle()58        }59    }60    // multiplier for full distance from start to end position to separate into steps61    private val SWIPE_EVENT_COUNT = 1062    private fun interpolate(start: FloatArray, end: FloatArray): Array<FloatArray> {63        val coord = Array(SWIPE_EVENT_COUNT) { FloatArray(2) }64        for (i in 1..SWIPE_EVENT_COUNT) {65            // get coordinates for each step (step = distance (end - start) / multiplier)66            // for x value67            coord[i - 1][0] = start[0] + (end[0] - start[0]) * i / SWIPE_EVENT_COUNT68            // for y value...

SlowerSwipe.kt

Source:SlowerSwipe.kt

1package com.hendraanggrian.material.subtitlecollapsingtoolbarlayout2import android.os.SystemClock3import android.util.Log4import androidx.test.espresso.UiController5import androidx.test.espresso.action.MotionEvents.sendCancel6import androidx.test.espresso.action.MotionEvents.sendDown7import androidx.test.espresso.action.MotionEvents.sendMovement8import androidx.test.espresso.action.MotionEvents.sendUp9import androidx.test.espresso.action.Swiper10import androidx.test.espresso.action.Swiper.Status.FAILURE11import androidx.test.espresso.action.Swiper.Status.SUCCESS12import androidx.test.espresso.core.internal.deps.guava.base.Preconditions13/**14 * @see androidx.test.espresso.action.Swipe15 */16class SlowerSwipe : Swiper {17    override fun sendSwipe(18        uiController: UiController,19        startCoordinates: FloatArray,20        endCoordinates: FloatArray,21        precision: FloatArray22    ): Swiper.Status = sendLinearSwipe(uiController, startCoordinates, endCoordinates, precision,...

DragAndDropAction.kt

Source:DragAndDropAction.kt

...5import androidx.recyclerview.widget.RecyclerView6import androidx.test.espresso.UiController7import androidx.test.espresso.ViewAction8import androidx.test.espresso.action.GeneralLocation9import androidx.test.espresso.action.MotionEvents10import androidx.test.espresso.action.Press11import androidx.test.espresso.matcher.ViewMatchers.isAssignableFrom12import androidx.test.espresso.matcher.ViewMatchers.isDisplayed13import org.hamcrest.Matcher14import org.hamcrest.Matchers.allOf15class DragAndDropAction(16  private val sourceViewPosition: Int,17  private val targetViewPosition: Int,18  @IdRes private val dragHandle: Int = -119) : ViewAction {20  override fun getConstraints(): Matcher<View> {21    return allOf(isDisplayed(), isAssignableFrom(RecyclerView::class.java))22  }23  override fun getDescription(): String {24    return "Drag and drop action"25  }26  override fun perform(uiController: UiController, view: View) {27    val recyclerView: RecyclerView = view as RecyclerView28    // Sending down29    recyclerView.scrollToPosition(sourceViewPosition)30    uiController.loopMainThreadUntilIdle()31    val sourceHolder = recyclerView.findViewHolderForAdapterPosition(sourceViewPosition)32    val sourceItemView = checkNotNull(sourceHolder).itemView33    val sourceView = if (dragHandle < 0) sourceItemView else sourceItemView.findViewById(dragHandle)34    val sourceViewCenter = GeneralLocation.VISIBLE_CENTER.calculateCoordinates(sourceView)35    val fingerPrecision = Press.FINGER.describePrecision()36    val downEvent = MotionEvents.sendDown(uiController, sourceViewCenter, fingerPrecision).down37    try {38      val longPressTimeout = (ViewConfiguration.getLongPressTimeout() * 2f).toLong()39      uiController.loopMainThreadForAtLeast(longPressTimeout)40      recyclerView.scrollToPosition(targetViewPosition)41      uiController.loopMainThreadUntilIdle()42      val targetHolder = recyclerView.findViewHolderForAdapterPosition(targetViewPosition)43      val targetItemView = checkNotNull(targetHolder).itemView44      val targetView = if (dragHandle < 0) {45        targetItemView46      } else {47        targetItemView.findViewById(dragHandle)48      }49      val targetViewLocation = GeneralLocation.CENTER.calculateCoordinates(targetView)50      targetViewLocation[1] = targetViewLocation[1] + 1051      val steps = interpolate(sourceViewCenter, targetViewLocation)52      for (element in steps) {53        if (!MotionEvents.sendMovement(uiController, downEvent, element)) {54          MotionEvents.sendCancel(uiController, downEvent)55        }56      }57      if (!MotionEvents.sendUp(uiController, downEvent, targetViewLocation)) {58        MotionEvents.sendCancel(uiController, downEvent)59      }60    } finally {61      downEvent.recycle()62    }63  }64  private fun interpolate(start: FloatArray, end: FloatArray): Array<FloatArray> {65    val res = Array(SWIPE_EVENT_COUNT) { FloatArray(2) }66    for (i in 1..SWIPE_EVENT_COUNT) {67      res[i - 1][0] = start[0] + (end[0] - start[0]) * i / SWIPE_EVENT_COUNT68      res[i - 1][1] = start[1] + (end[1] - start[1]) * i / SWIPE_EVENT_COUNT69    }70    return res71  }72  companion object {...

ViewActions.kt

Source:ViewActions.kt

...3import android.view.View4import androidx.test.espresso.UiController5import androidx.test.espresso.ViewAction6import androidx.test.espresso.action.GeneralLocation7import androidx.test.espresso.action.MotionEvents8import androidx.test.espresso.action.Press9import androidx.test.espresso.matcher.ViewMatchers.isDisplayingAtLeast10import org.hamcrest.Matcher11private var sMotionEventDownHeldView: MotionEvent? = null12fun pressAndHold(): ViewAction {13    return PressAndHoldAction()14}15fun release(): ViewAction {16    return ReleaseAction()17}18private class PressAndHoldAction : ViewAction {19    override fun getConstraints(): Matcher<View> {20        return isDisplayingAtLeast(90) // Like GeneralClickAction21    }22    override fun getDescription(): String {23        return "Press and hold action"24    }25    override fun perform(uiController: UiController, view: View) {26        if (sMotionEventDownHeldView != null) {27            throw AssertionError("Only one view can be held at a time")28        }29        val precision = Press.FINGER.describePrecision()30        val coords = GeneralLocation.CENTER.calculateCoordinates(view)31        sMotionEventDownHeldView = MotionEvents.sendDown(uiController, coords, precision).down32    }33}34private class ReleaseAction : ViewAction {35    override fun getConstraints(): Matcher<View> {36        return isDisplayingAtLeast(90)  // Like GeneralClickAction37    }38    override fun getDescription(): String {39        return "Release action"40    }41    override fun perform(uiController: UiController, view: View) {42        if (sMotionEventDownHeldView == null) {43            throw AssertionError("Before calling release(), you must call pressAndHold() on a view")44        }45        val coords = GeneralLocation.CENTER.calculateCoordinates(view)46        MotionEvents.sendUp(uiController, sMotionEventDownHeldView!!, coords)47    }48}

TouchMotionMatcher.kt

Source:TouchMotionMatcher.kt

1package com.mojo.app.matchers2import android.view.View3import androidx.test.espresso.UiController4import androidx.test.espresso.ViewAction5import androidx.test.espresso.action.MotionEvents6import androidx.test.espresso.matcher.ViewMatchers.isDisplayed7import org.hamcrest.Matcher8fun moveFromTo(fromX: Float, fromY: Float, toX: Float, toY: Float): ViewAction {9    return object : ViewAction {10        override fun getConstraints(): Matcher<View> {11            return isDisplayed()12        }13        override fun getDescription(): String {14            return "Sending touch events."15        }16        override fun perform(uiController: UiController, view: View) {17            val location = IntArray(2)18            view.getLocationOnScreen(location)19            val coordinatesDown = floatArrayOf(fromX + location[0], fromY + location[1])20            val precision = floatArrayOf(1f, 1f)21            val down = MotionEvents.sendDown(uiController, coordinatesDown, precision).down22            uiController.loopMainThreadForAtLeast(300)23            MotionEvents.sendUp(uiController, down, coordinatesDown)24            val downTwice = MotionEvents.sendDown(uiController, coordinatesDown, precision).down25            uiController.loopMainThreadForAtLeast(300)26            val coordinatesMove = floatArrayOf(toX + location[0], toY + location[1])27            MotionEvents.sendMovement(uiController, downTwice, coordinatesMove)28            uiController.loopMainThreadForAtLeast(300)29            MotionEvents.sendUp(uiController, downTwice, coordinatesMove)30        }31    }32}...

ViewActionUtil.kt

Source:ViewActionUtil.kt

1package com.lebartodev.lnote.utils2import android.view.View3import androidx.test.espresso.UiController4import androidx.test.espresso.ViewAction5import androidx.test.espresso.action.MotionEvents6import androidx.test.espresso.matcher.ViewMatchers.isDisplayed7import org.hamcrest.Matcher8object ViewActionUtil {9    fun touchDownAndUp(x: Float, y: Float): ViewAction {10        return object : ViewAction {11            override fun getConstraints(): Matcher<View> {12                return isDisplayed()13            }14            override fun getDescription(): String {15                return "Send touch events."16            }17            override fun perform(uiController: UiController, view: View) {18                val location = IntArray(2)19                view.getLocationOnScreen(location)20                val coordinates = floatArrayOf(x + location[0], y + location[1])21                val precision = floatArrayOf(1f, 1f)22                // Send down event, pause, and send up23                val down = MotionEvents.sendDown(uiController, coordinates, precision).down24                uiController.loopMainThreadForAtLeast(200)25                MotionEvents.sendUp(uiController, down, coordinates)26            }27        }28    }29}...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.