java怎么通过坐标定位控件_[已解决] 可以定位到控件, 但每次执行 click () 方法会报空指针错误 java.lang.NullPointerException...

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#java怎么通过坐标定位控件

在使用Appium进行Android自动化测试时，通过坐标定位到控件成功，但在执行点击操作时出现java.lang.NullPointerException。日志显示能够找到元素，但调用.click()时出错。测试环境包括eclipse、jdk 1.8.0_131和appium 1.6.5。问题可能与Appium版本或设备兼容性有关。

问题描述:

正常启动 appium 服务, 在 eclipse 中右键 Run as TestNG Test 之后, apk 可以正常安装并启动, 但是总会在 btn.click();处报错, 错误为 java.lang.NullPointerException.

我仔细看了 appium 的日志, [AndroidBootstrap] [BOOTSTRAP LOG] [debug] Returning result: {"value":{"ELEMENT":"1"},"status":0}, 说明找得到这个控件, 但是一调用该控件的.click() 方法就出错了. 有大家遇到和我一样的问题么????

完整的脚本及错误日志如下;

运行环境:

eclipse

jdk 1.8.0_131

appium 1.6.5

java 脚本

package appium;

import java.io.File;

import java.net.URL;

import java.util.List;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By.ById;

import org.openqa.selenium.WebElement;

import org.openqa.selenium.remote.CapabilityType;

import org.openqa.selenium.remote.DesiredCapabilities;

import org.testng.annotations.AfterMethod;

import org.testng.annotations.BeforeMethod;

import org.testng.annotations.Test;

import io.appium.java_client.android.AndroidDriver;

public class testDemo {

AndroidDriver driver;

SDK sdk = new SDK("360");

@BeforeMethod(alwaysRun = true)

public void setUp() throws Exception {

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

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

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

DesiredCapabilities capabilities = new DesiredCapabilities();

capabilities.setCapability(CapabilityType.BROWSER_NAME, "");

capabilities.setCapability("appium-version", "1.6.5");

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

capabilities.setCapability("deviceName", "vivo X5L");

capabilities.setCapability("udid", "BMBY8LU4YTMBS8SO");

capabilities.setCapability("platformVersion", "4.4.2");

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

capabilities.setCapability("appPackage", "com.example.android.contactmanager");

capabilities.setCapability("appActivity", ".ContactManager");

driver = new AndroidDriver(new URL("http://0.0.0.0:4723/wd/hub"), capabilities);

}

@AfterMethod(alwaysRun = true)

public void tearDown() throws Exception {

driver.quit();

}

@Test(groups = { "test" })

public void test() {

driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);

WebElement btn=driver.findElement(ById.id("com.example.android.contactmanager:id/addContactButton"));

btn.click();

List textFieldsList = driver.findElementsByClassName("android.widget.EditText");

textFieldsList.get(0).sendKeys("JerryWang");

textFieldsList.get(1).sendKeys("12345678901");

textFieldsList.get(2).sendKeys("jerry@wang.com");

driver.swipe(100, 500, 100, 100, 2);

driver.findElementByName("Save").click();

}

eclipse console 的报错信息

FAILED: test

java.lang.NullPointerException

at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:275)

at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:82)

at appium.testDemo.test(testDemo.java:49)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)

at org.testng.internal.Invoker.invokeMethod(Invoker.java:661)

at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:869)

at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1193)

at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:126)

at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)

at org.testng.TestRunner.privateRun(TestRunner.java:744)

at org.testng.TestRunner.run(TestRunner.java:602)

at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)

at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375)

at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)

at org.testng.SuiteRunner.run(SuiteRunner.java:289)

at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)

at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)

at org.testng.TestNG.runSuitesSequentially(TestNG.java:1301)

at org.testng.TestNG.runSuitesLocally(TestNG.java:1226)

at org.testng.TestNG.runSuites(TestNG.java:1144)

at org.testng.TestNG.run(TestNG.java:1115)

at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)

at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:230)

at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:76)

===============================================

Default test

Tests run: 1, Failures: 1, Skips: 0

===============================================

Default suite

Total tests run: 1, Failures: 1, Skips: 0

===============================================

appium 的日志

[Appium] Welcome to Appium v1.6.5

[Appium] Appium REST http interface listener started on 0.0.0.0:4723

[HTTP] --> POST /wd/hub/session {"capabilities":[{"desiredCapabilities":{"app":"D:\\workspace_new\\appium\\apps\\Contact

Manager.apk","appPackage":"com.example.android.contactmanager","appActivity":".ContactManager","appium-version":"1.6.5",

"platformVersion":"4.4.2","browserName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"}},

{"requiredCapabilities":{}}],"desiredCapabilities":{"app":"D:\\workspace_new\\appium\\apps\\ContactManager.apk","appPack

age":"com.example.android.contactmanager","appActivity":".ContactManager","appium-version":"1.6.5","platformVersion":"4.

4.2","browserName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"},"requiredCapabilities"

:{}}

[debug] [MJSONWP] Calling AppiumDriver.createSession() with args: [{"app":"D:\\workspace_new\\appium\\apps\\ContactManag

er.apk","appPackage":"com.example.android.contactmanager","appActivity":".ContactManager","appium-version":"1.6.5","plat

formVersion":"4.4.2","browserName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"},{},[{"

desiredCapabilities":{"app":"D:\\workspace_new\\appium\\apps\\ContactManager.apk","appPackage":"com.example.android.cont

actmanager","appActivity":".ContactManager","appium-version":"1.6.5","platformVersion":"4.4.2","browserName":"","platfor

mName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"}},{"requiredCapabilities":{}}]]

[debug] [BaseDriver] Event 'newSessionRequested' logged at 1503389706281 (16:15:06 GMT+0800 (中国标准时间))

[Appium] Creating new AndroidDriver (v1.20.0) session

[Appium] Capabilities:

[Appium] app: 'D:\\workspace_new\\appium\\apps\\ContactManager.apk'

[Appium] appPackage: 'com.example.android.contactmanager'

[Appium] appActivity: '.ContactManager'

[Appium] appium-version: '1.6.5'

[Appium] platformVersion: '4.4.2'

[Appium] browserName: ''

[Appium] platformName: 'Android'

[Appium] udid: 'BMBY8LU4YTMBS8SO'

[Appium] deviceName: 'vivo X5L'

[debug] [AndroidDriver] AndroidDriver version: 1.20.0

[BaseDriver] The following capabilities were provided, but are not recognized by appium: appium-version.

[BaseDriver] Session created with session id: 6cf6350c-36b3-4747-a044-cf9c13643f32

[debug] [AndroidDriver] Getting Java version

[AndroidDriver] Java version is: 1.8.0_131

[ADB] Checking whether adb is present

[ADB] Using adb.exe from D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe

[AndroidDriver] Retrieving device list

[debug] [ADB] Trying to find a connected android device

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[AndroidDriver] Using device: BMBY8LU4YTMBS8SO

[ADB] Checking whether adb is present

[ADB] Using adb.exe from D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe

[debug] [ADB] Setting device id to BMBY8LU4YTMBS8SO

[BaseDriver] Using local app 'D:\workspace_new\appium\apps\ContactManager.apk'

[debug] [AndroidDriver] Checking whether app is actually present

[AndroidDriver] Starting Android session

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","wait-for-device"]

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","echo","ping"]

[debug] [Logcat] Starting logcat capture

[debug] [AndroidDriver] Pushing settings apk to device...

[debug] [ADB] Getting install status for io.appium.settings

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","pm","list","packages","io.appium.settings"]

[debug] [ADB] App is installed

[debug] [ADB] Getting package info for io.appium.settings

[debug] [ADB] Getting connected devices...

[ADB] Checking whether aapt is present

[ADB] Using aapt.exe from D:\adt-bundle-windows-x86_64-20140321\sdk\build-tools\android-4.4.2\aapt.exe

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","dumpsys","package","io.appium.settings"]

[ADB] Cannot read version codes of C:\Users\wangjiarui\AppData\Roaming\npm\node_modules\appium\node_modules\io.appium.se

ttings\app\build\outputs\apk\settings_apk-debug.apk and/or io.appium.settings. Assuming correct app version is already i

nstalled

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","ro.build.version.sdk"]

[debug] [ADB] Device API level: 19

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","dumpsys","package","io.appium.settings"]

[debug] [AndroidDriver] Pushing unlock helper app to device...

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","install","C:\\Users\\wangjiarui\\AppData\\Roaming\\npm\\node_modules\\appium\\node_modules\\appium-unloc

k\\bin\\unlock_apk-debug.apk"]

[debug] [ADB] Device API level: 19

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","settings","put","secure","mock_location","1"]

[ADB] Getting device platform version

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","ro.build.version.release"]

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","wm","size"]

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","ro.product.model"]

[debug] [ADB] Current device property 'ro.product.model': vivo X5L

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","ro.product.manufacturer"]

[debug] [ADB] Current device property 'ro.product.manufacturer': BBK

[AndroidDriver] Remote apk path is /data/local/tmp/b2d2916bb5388e1dc281ec3e71ef1234.apk

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","ls","/data/local/tmp/b2d2916bb5388e1dc281ec3e71ef1234.apk"]

[debug] [AndroidDriver] Checking if app is installed

[debug] [ADB] Getting install status for com.example.android.contactmanager

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","pm","list","packages","com.example.android.contactmanager"]

[debug] [ADB] App is installed

[AndroidDriver] Apk is already on remote and installed, resetting

[debug] [AndroidDriver] Running fast reset (stop and clear)

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","am","force-stop","com.example.android.contactmanager"]

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","pm","clear","com.example.android.contactmanager"]

[debug] [AndroidDriver] Extracting strings from apk D:\workspace_new\appium\apps\ContactManager.apk null C:\Users\WANGJI

~1\AppData\Local\Temp\com.example.android.contactmanager

[debug] [ADB] Extracting strings for language: default

[debug] [ADB] Device API level: 19

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","persist.sys.language"]

[debug] [ADB] Current device property 'persist.sys.language':

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","getprop","ro.product.locale.language"]

[debug] [ADB] Current device property 'ro.product.locale.language': zh

[debug] [ADB] No strings.xml for language 'zh', getting default strings.xml

[debug] [ADB] Reading strings from converted strings.json

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","push","C:\\Users\\WANGJI~1\\AppData\\Local\\Temp\\com.example.android.contactmanager\\strings.json","/da

ta/local/tmp"]

[debug] [AndroidBootstrap] Watching for bootstrap disconnect

[debug] [ADB] Forwarding system: 4724 to device: 4724

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","forward","tcp:4724","tcp:4724"]

[debug] [UiAutomator] Starting UiAutomator

[debug] [UiAutomator] Moving to state 'starting'

[debug] [UiAutomator] Parsing uiautomator jar

[debug] [UiAutomator] Found jar name: 'AppiumBootstrap.jar'

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","push","C:\\Users\\wangjiarui\\AppData\\Roaming\\npm\\node_modules\\appium\\node_modules\\appium-android-

bootstrap\\bootstrap\\bin\\AppiumBootstrap.jar","/data/local/tmp/"]

[debug] [ADB] Attempting to kill all uiautomator processes

[debug] [ADB] Getting all processes with uiautomator

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","ps"]

[ADB] No uiautomator process found to kill, continuing...

[debug] [UiAutomator] Starting UIAutomator

[debug] [ADB] Creating ADB subprocess with args: ["-P",5037,"-s","BMBY8LU4YTMBS8SO","shell","uiautomator","runtest","App

iumBootstrap.jar","-c","io.appium.android.bootstrap.Bootstrap","-e","pkg","com.example.android.contactmanager","-e","dis

ableAndroidWatchers",false,"-e","acceptSslCerts",false]

[debug] [UiAutomator] Moving to state 'online'

[AndroidBootstrap] Android bootstrap socket is now connected

[debug] [ADB] Getting connected devices...

[AndroidBootstrap] [BOOTSTRAP LOG] [debug] Client connected

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","dumpsys","window"]

[AndroidDriver] Screen already unlocked, doing nothing

[debug] [ADB] Device API level: 19

[debug] [ADB] Getting connected devices...

[debug] [ADB] 1 device(s) connected

[debug] [ADB] Running 'D:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' with args: ["-P",5037,"-s","BMB

Y8LU4YTMBS8SO","shell","am","start","-W","-n","com.example.android.contactmanager/.ContactManager","-S","-a","android.in

tent.action.MAIN","-c","android.intent.category.LAUNCHER","-f","0x10200000"]

[Appium] New AndroidDriver session created successfully, session 6cf6350c-36b3-4747-a044-cf9c13643f32 added to master se

ssion list

[debug] [BaseDriver] Event 'newSessionStarted' logged at 1503389722286 (16:15:22 GMT+0800 (中国标准时间))

[debug] [MJSONWP] Responding to client with driver.createSession() result: {"platform":"LINUX","webStorageEnabled":false

,"takesScreenshot":true,"javascriptEnabled":true,"databaseEnabled":false,"networkConnectionEnabled":true,"locationContex

tEnabled":false,"warnings":{},"desired":{"app":"D:\\workspace_new\\appium\\apps\\ContactManager.apk","appPackage":"com.e

xample.android.contactmanager","appActivity":".ContactManager","appium-version":"1.6.5","platformVersion":"4.4.2","brows

erName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"},"app":"D:\\workspace_new\\appium\

\apps\\ContactManager.apk","appPackage":"com.example.android.contactmanager","appActivity":".ContactManager","appium-ver

sion":"1.6.5","platformVersion":"4.4.2","browserName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName"

:"BMBY8LU4YTMBS8SO","deviceUDID":"BMBY8LU4YTMBS8SO","deviceScreenSize":"720x1280","deviceModel":"vivo X5L","deviceManufa

cturer":"BBK"}

[HTTP]

[HTTP] --> GET /wd/hub/session/6cf6350c-36b3-4747-a044-cf9c13643f32 {}

[debug] [MJSONWP] Calling AppiumDriver.getSession() with args: ["6cf6350c-36b3-4747-a044-cf9c13643f32"]

[debug] [MJSONWP] Responding to client with driver.getSession() result: {"platform":"LINUX","webStorageEnabled":false,"t

akesScreenshot":true,"javascriptEnabled":true,"databaseEnabled":false,"networkConnectionEnabled":true,"locationContextEn

abled":false,"warnings":{},"desired":{"app":"D:\\workspace_new\\appium\\apps\\ContactManager.apk","appPackage":"com.exam

ple.android.contactmanager","appActivity":".ContactManager","appium-version":"1.6.5","platformVersion":"4.4.2","browserN

ame":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"vivo X5L"},"app":"D:\\workspace_new\\appium\\ap

ps\\ContactManager.apk","appPackage":"com.example.android.contactmanager","appActivity":".ContactManager","appium-versio

n":"1.6.5","platformVersion":"4.4.2","browserName":"","platformName":"Android","udid":"BMBY8LU4YTMBS8SO","deviceName":"B

MBY8LU4YTMBS8SO","deviceUDID":"BMBY8LU4YTMBS8SO","deviceScreenSize":"720x1280","deviceModel":"vivo X5L","deviceManufactu

rer":"BBK"}