移植MonkeyRunner的图片对比和获取子图功能的实现-UiAutomator/Robotium篇

根据前一篇文章《移植MonkeyRunner的图片对比和获取子图功能的实现-Appium篇》所述，因为Appium和MonkeyRunner有一个共同点--代码控制流程都是在客户端实现的。所以要把MonkeyRunner在PC端实现的图片比对和获取子图功能移植到同样是在PC端运行的Appium是很容易的事情，但是对于在服务器端运行的Robotium和UiAutomator就是另外一回事了。

因为在Android的sdk中，MonkeyRunner获取子图和图片比对需要用到的以下两个类是没有支持的，简单来说就是java.awt这个库是不支持的：

import java.awt.image.BufferedImage;import javax.imageio.ImageIO;

但是在Android的sdk中有Bitmap这个类来帮助我们完成类似的功能，同时这个类还提供了一个sameAs的方法来比对两个Bitmap是否一致，但是遗憾的是它没有像MonkeyRunner一样提供一个百分比来指明两个图片的差异接受程度，所以为了兼容多种情况，我们需要对sameAs方法提供多个重载方法。

当然，这只是验证代码，有bug的话自己调吧。

1. 移植代码

注意一下代码只在UiAutomator上面测试通过，但是我相信Robotium是一样的，因为他们都是运行在目标安卓机器上面的，大家可以自行验证下。

package libs;import java.io.FileInputStream;import java.io.FileNotFoundException;import android.graphics.Bitmap;import android.graphics.BitmapFactory;public class Util {public static boolean sameAs (String path1, String path2) throws FileNotFoundException {boolean res = false;FileInputStream fis1 = new FileInputStream(path1);Bitmap bitmap1  = BitmapFactory.decodeStream(fis1);FileInputStream fis2 = new FileInputStream(path2);Bitmap bitmap2  = BitmapFactory.decodeStream(fis2);res = sameAs(bitmap1,bitmap2);return res;}public static boolean sameAs (String path1, String path2,double percent) throws FileNotFoundException {FileInputStream fis1 = new FileInputStream(path1);Bitmap bitmap1  = BitmapFactory.decodeStream(fis1);FileInputStream fis2 = new FileInputStream(path2);Bitmap bitmap2  = BitmapFactory.decodeStream(fis2);return sameAs(bitmap1,bitmap2,percent);}public static boolean sameAs (Bitmap bitmap1, Bitmap bitmap2, double percent) {if(bitmap1.getHeight() != bitmap2.getHeight())return false;if(bitmap1.getWidth() != bitmap2.getWidth())return false;if(bitmap1.getConfig() != bitmap2.getConfig())return false;int width = bitmap1.getWidth();int height = bitmap2.getHeight();int numDiffPixels = 0;          for (int y = 0; y < height; y++) {       for (int x = 0; x < width; x++) {         if (bitmap1.getPixel(x, y) != bitmap2.getPixel(x, y)) {           numDiffPixels++;         }       }     }     double numberPixels = height * width;     double diffPercent = numDiffPixels / numberPixels;     return percent <= 1.0D - diffPercent;}public static boolean sameAs (Bitmap bmp1, Bitmap bmp2) throws FileNotFoundException {boolean res = false;res = bmp1.sameAs(bmp2);return res;}public static Bitmap getSubImage(String path,int x,int y,int width,int height) throws FileNotFoundException {FileInputStream fis = new FileInputStream(path);Bitmap bitmap  = BitmapFactory.decodeStream(fis);Bitmap res = Bitmap.createBitmap(bitmap, x, y, width, height);return res;}}

2. 调用代码示例

以下是UiAutomator示例，Robotium的示例请大家自行实现.

package sample.demo;import java.io.File;import java.io.IOException;import libs.Util;import android.graphics.Bitmap;import com.android.uiautomator.core.UiDevice;import com.android.uiautomator.core.UiObject;import com.android.uiautomator.core.UiObjectNotFoundException;import com.android.uiautomator.core.UiSelector;import com.android.uiautomator.testrunner.UiAutomatorTestCase;public class CompareScreenshots extends UiAutomatorTestCase   {public void testCompareScreenshotsNSubScrenshots() throws UiObjectNotFoundException, IOException, InterruptedException {UiDevice device = getUiDevice();//device.pressHome();UiObject appNotes = new UiObject(new UiSelector().text("Notes"));appNotes.click();Thread.sleep(3000);String p1 = "/data/local/tmp/1.bmp";String p2 = "/data/local/tmp/2.bmp";File f1 = new File(p1);if(f1.exists())f1.delete();File f2 = new File(p2);if(f2.exists())f2.delete();device.takeScreenshot(f1);device.takeScreenshot(f2);Bitmap sub1 = Util.getSubImage(p1, 6, 39, 474, 38);Bitmap sub2 = Util.getSubImage(p2, 6, 39, 474, 38);boolean same = Util.sameAs(sub1, sub2, 1.0);assertTrue(same);same = Util.sameAs(p1, p2, 0.9);assertTrue(same); }}

 

作者

自主博客

微信

CSDN

天地会珠海分舵

http://techgogogo.com

服务号:TechGoGoGo

扫描码:

http://blog.csdn.net/zhubaitian