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。
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;
}
}
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 |