如何在Android设备的Mac OS上以Java编程方式执行ADB命令

Question

everybody! I'm trying to write listener for my testing framework using Appium, java, TestNG for Android application on real device. I want to use some ADB commands through my tests, for example take screenshot, record video, get logcat file, etc

So I have: Mac OS Android device Xiaomi, with Android version 7.0 ADB ANdroid SDK java

If I use commands in Terminal: adb exec-out screencap -p > /Users/dmytro/Documents/other/1.png - screenshot successfully saved in appropriate folder. And other commands work fine manually typed in terminal and in terminal of my IntelijIDEA as well.

If I use the same command programmatically by using Runtime class:

Runtime.getRuntime().exec(adb exec-out screencap -p > /Users/dmytro/Documents/other/1.png"); // Save screenshot to Mac machine

or

Runtime.getRuntime().exec("adb logcat > /Users/dmytromynziak/Documents/other/log.txt"); //Save logical file

Runtime.getRuntime().exec("db exec-out screencap -p > /sdcard/1.png"); // Save screenshot to scared of android device

It doesn't work, screenshot is not saved to Mac machine and even can't find on android device.

No any error I received, looks like everything works. see screenshot from debug mode.

Actually, some adb commands worked fine on WIndows OS, but on Mac it don't.

Help me execute ADB commands in java code please.

Answer 1

The adb commands are succeeding, but not redirected to a file as expected. With Java Runtime.getRuntime().exec() , the > for redirect won't work. Explanation for this can be found from this StackOverflow question: Runtime's exec() method is not redirecting the output

adb logcat itself also has -f flag, which tells the process to write into a file, as described in this discussion: Catch LogCat programmatically or export it to file?