uiautomator语法和api介绍

uiautomator android自动化测试原理

官网介绍

The uiautomator testing framework lets you test your user interface (UI) efficiently by creating automated functional UI testcases that can be run against your app on one or more devices.
For more information on testing with the uiautomator
framework, see UI Testing.

Syntax

To run your testcases on the target device, you can use the adb shell command to invoke the uiautomator tool. The syntax is:

adb shell uiautomator runtest <jar> -c <test_class_or_method> 
[options]

Here’s an example:

adb shell uiautomator runtest LaunchSettings.jar -c com.uia.example.my.LaunchSettings

Command-line Options

The following table describes the subcommands and options for uiautomator.

Table 1. Command-line options for uiautomator

Subcommand	Option	Description
runtest	<jar>	Required. The <jar> argument is the name of one or more JAR files that you deployed to the target device which contain your uiautomator testcases. You can list more than one JAR file by using a space as a separator.
	-c <test_class_or_method>	Required. The <test_class_or_method> argument is a list of one or more specific test classes or test methods from the JARs that you want uiautomator to run. Each class or method must be fully qualified with the package name, in one of these formats:</br>1. package_name.class_name;</br>2. package_name.class_name#method_name .</br> You can list multiple classes or methods by using a space as a separator.
	--nohup	Runs the test to completion on the device even if its parent process is terminated (for example, if the device is disconnected).
	-e <NAME> <VALUE>	Specify other name-value pairs to be passed to test classes. May be repeated.Note: The -e options cannot be combined; you must prefix each option with a separate -e flag.
	-e debug [true/false]	Wait for debugger to connect before starting.
	dump	[file]	Generate an XML file with a dump of the current UI hierarchy. If a filepath is not specified, by default, the generated dump file is stored on the device in this location /storage/sdcard0/window_dump.xml.
events		Prints out accessibility events to the console until the connection to the device is terminated

uiautomator API

The uiautomator API is bundled in the uiautomator.jar file under the <android-sdk>/platforms/ directory. The API includes these key classes, interfaces, and exceptions that allow you to capture and manipulate UI components on the target app:

Classes

Class	Description
com.android.uiautomator.core.UiCollection	Used to enumerate a container's user interface (UI) elements for the purpose of counting, or targeting a sub elements by a child's text or description.
com.android.uiautomator.core.UiDevice	Provides access to state information about the device. You can also use this class to simulate user actions on the device, such as pressing the d-pad hardware button or pressing the Home and Menu buttons.
com.android.uiautomator.core.UiObject	Represents a user interface (UI) element.
com.android.uiautomator.core.UiScrollable	Provides support for searching for items in a scrollable UI container.
com.android.uiautomator.core.UiSelector	Represents a query for one or more target UI elements on a device screen.

Interfaces

Interface	Description
com.android.uiautomator.core.UiWatcher	Represents a conditional watcher on the target device.
com.android.uiautomator.testrunner.IAutomationSupport	Provides auxiliary support for running test cases.
com.android.uiautomator.testrunner.UiAutomatorTestCase	Defines an environment for running multiple tests. All uiautomator
test cases should extend this class.

Exceptions

Exception	Description
com.android.uiautomator.core.</br>UiObjectNotFoundException	Indicates when a a UiSelector could not be matched to any UI element displayed.

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