CODEWITHSUNDEEP
android-cameraandroid-espressoandroid-uiautomator
VIN
VIN

Reputation: 6947

Click on Camera Shutter using UIAutomator

I am writing an Espresso test for my app, and am trying to automate clicking the shutter button after opening of a camera in my app.

I am using Espresso and UIAutomator in the Android Emulator. I managed to dump this UI in UIAutomatorViewer. UIAutomatorViewer

I can't figure out why I am unable to click on the shutter button using UIAutomator using this code:

public void clickCameraShutterButton() throws UiObjectNotFoundException
{
    UiDevice device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
    UiSelector shutterSelector = new UiSelector().resourceId("com.android.camera:id/shutter_button");
    UiObject shutterButton = device.findObject(shutterSelector);
    shutterButton.click();
}

The camera just sits there, and the shutter button is never clicked. This is the stack trace I'm getting in the Android Studio monitor:

java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.app.Activity.findViewById(int)' on a null object reference

Any advice would be appreciated.

Upvotes: 0

Views: 2966

Answers (4)

Jaydeep Khambhayta
Jaydeep Khambhayta

Reputation: 5279

I have tested the code below and it's working on a Google Pixel device.

fun captureImage() {
    val instrument = InstrumentationRegistry.getInstrumentation()
    val device = UiDevice.getInstance(instrument)
    // camera clicked 
    device.executeShellCommand("input keyevent 27")
    // save button clicked 
    device.findObject(By.res("com.android.camera2:id/done_button")).click()
}

to cancel the image use "com.android.camera2:id/cancel_button"

Upvotes: 0

Umesh Chandra Biswas
Umesh Chandra Biswas

Reputation: 1

Just need to put the UI Automator Viewer "resource-id" value at the place of *

mdevice.findObject(new UiSelector().resourceId("*")).click();

Upvotes: 0

MrCat
MrCat

Reputation: 136

You can try this code:

device.findObject(new UiSelector().resourceId("com.android.camera:id/shutter_button")).click();

or

device.findObject(new UiSelector().description("Shutter button")).click();

or

device.executeShellCommand("input keyevent 27");

this mean KEYCODE_CAMERA value is 27

or

device.click(x,y);

Upvotes: 3

Diego Torres Milano
Diego Torres Milano

Reputation: 69189

This worked for me

@Before
public void setUp() {
    // Initialize UiDevice instance
    final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
    mDevice = UiDevice.getInstance(instrumentation);
}

...


/**
 * @@Test comment here@@
 *
 * @throws Exception
 */
@Test
public void culebraGeneratedTest_CameraShutter() throws Exception {
    mDevice.findObject(By.res("com.android.camera2:id/shutter_button").desc("Shutter").clazz("android.widget.ImageView").text(Pattern.compile("")).pkg("com.android.camera2")).clickAndWait(Until.newWindow(), DEFAULT_TIMEOUT);
}

This test finds the shutter and clicks on it.

If you are interested this test was automatically generated using CulebraTester.

Upvotes: 2

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