所谓Launcher，指的是安卓的桌面管理程序，全部的应用图标都放在launcher上面。事实上这是一个非常easy的样例，仅仅是为了验证几点想法而已。

1.实验目的

做这个试验的目的有二

尝试下窗口滑动函数swipe的使用
好奇到底能不能正常的对安卓的Launcher进行指定package和activity进行測试

2.实验背景

过程是打算使用appium来启动launcher，然后滑动窗体去获取在第三个桌面的sdk自带应用”Notes“。

例如以下图所看到的

3. 试验步骤

3.1 获得launcher的package和activity两个capabilities

能够通过HierarchyViewer直接查看获得

3.2 编码实现

package majcit.com.AppiumDemo;

import io.appium.java_client.android.AndroidDriver;

import java.net.URL;

import org.junit.Test;

import org.junit.After;

import org.junit.Before;

import org.openqa.selenium.Dimension;

import org.openqa.selenium.NoSuchElementException;

import org.openqa.selenium.Point;

import org.openqa.selenium.WebElement;

import org.openqa.selenium.remote.DesiredCapabilities;

import static org.hamcrest.Matchers.*;

import static org.hamcrest.MatcherAssert.assertThat;

/**

 * Unit test for simple App.

 */

public class LauncherTest {

    /**

     * Create the test case

     *

     * @param testName name of the test case

     */

	private AndroidDriver driver;

    @Before

    public void setUp() throws Exception {

        // set up appium

        //File classpathRoot = new File(System.getProperty("user.dir"));

        //File appDir = new File(classpathRoot, "apps");

        //File app = new File(appDir, "NotePad.apk");

        DesiredCapabilities capabilities = new DesiredCapabilities();

        capabilities.setCapability("deviceName","Android");

        //capabilities.setCapability("platformVersion", "4.2");

        //capabilities.setCapability("platformName", "Android");

        //capabilities.setCapability("app", app.getAbsolutePath());

        capabilities.setCapability("appPackage", "com.miui.home");

        capabilities.setCapability("appActivity", "com.miui.home.launcher.Launcher");

        //capabilities.setCapability("appActivity", ".NotesList");

        //capabilities.setCapability("autoLaunch", "false");

        //capabilities.setCapability("noReset", true);

        driver = new AndroidDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);

    } 

    @After

    public void tearDown() throws Exception {

        driver.quit();

    }

    @Test

    public void launchNotePad() throws InterruptedException{

    	WebElement el = null;

    	WebElement screen = null;

    	Point point = null;

    	Dimension size = null;

    	boolean found = false;

    	int pageCount = 3; //Assume that there are totally 3 screens to be swiped.

    	int xStart = -1;

    	int yStart = -1;

    	int xEnd = -1;

    	int yEnd = -1;

    	//Get the start and end coordinates for swipe

    	Thread.sleep(3000);

    	screen = driver.findElementById("com.miui.home:id/cell_layout");

    	point = screen.getLocation();

    	size = screen.getSize();

    	xEnd = point.getX();

    	yEnd = point.getY() + size.getHeight()/2;

    	xStart = point.getX() + size.getWidth() - 5;

    	yStart = yEnd;

    	System.out.println("starX:" + xStart +"\nstartY:" + yStart + "\nendX:" + xEnd + "\nendY:" + yEnd);

    	//本来想通过推断屏幕上的几个小圆点来推断到底有多少个屏幕的，但发觉xPath根本不起效，父文件夹感觉根本起不了定位作用，仅仅有最后的//android.widget.ImageView起效，所以一下找出75个元素。

/*

    	List<WebElement> pageImages = driver.findElementsByXPath("//android.view.View/android.widget.LinearLayout/android.widget.ImageView");

    	assertThat(pageImages.size(),is(3));

    	for (WebElement e: pageImages) {

    		e.click();

    	}

    	*/

    	//Swipe all screens till get the expected control

    	int currentPage = 0;

    	while (found == false && currentPage < pageCount) {

    		found = true;

    		currentPage += 1;

    		try {

        		el = driver.findElementByName("Notes");

        	}catch (NoSuchElementException e) {

        		found = false;

        		System.out.println(e);

        	}

    		if (found == true)

    			break;

    		driver.swipe(xStart, yStart, xEnd, yEnd, 100);

        	Thread.sleep(1000);

    	}

    	assertThat(found,is(true));

    	assertThat(el,notNullValue());

        el.click();

    }

}

步骤说明大概例如以下：

准备好必须的capabilities传送给appiumserver端。注意指定app，由于我们不须要又一次安装Launcher
找到代表整个屏幕的控件，然后通过获取它的location和size属性来计算出滑动開始和结束的坐标。
注意開始的坐标假设是屏幕的边界，须要调整下像素（样例中是减去5个像素）以防出错。
通过滑动遍历每一个页面直到找到目标控件为止。

作者

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Appium測试安卓Launcher以滑动窗口获得目标应用