不需要root:

这段代码将获得第三方包的路径和名称，以便您可以轻松识别您的APK

adb shell pm list packages -f -3

输出将是

包:/ / app / XX.XX.XX.apk = YY.YY.YY数据

现在使用下面的代码拉出这个包:

adb pull /data/app/XX.XX.XX.apk

如果你在C:>\中执行上面的cmd命令，那么你会在那里找到这个包。

最简单的是: 在手机上安装“ShareIt”应用。 现在在PC或其他手机上安装shareIt应用程序。 现在，在安装了应用程序的手机上，打开ShareIt并发送。 在其他手机或电脑上打开ShareIt并接收。

C:\Users\xyz>adb shell pm list packages -f | findstr whatsapp
package:/data/app/com.whatsapp-1/base.apk=com.whatsapp

C:\Users\xyz>adb pull /data/app/com.whatsapp-1/base.apk Desktop
/data/app/com.whatsapp-1/base.apk: 1 f.... 13.8 MB/s (32803925 bytes in 
2.269s)

如上所述，您可以通过使用adb中的pull命令来获得apk。

由于您正在讨论已安装的应用程序，请继续查看Android文件系统的/data/app目录。你会在那里找到APK。

然后使用adb命令- adb pull /data/data/appname.apk

我得到了一个不存在的错误

我是这么做的

adb shell pm list packages -f | findstr zalo
package:/data/app/com.zing.zalo-1/base.apk=com.zing.zalo

adb shell
mido:/ $ cp /data/app/com.zing.zalo-1/base.apk /sdcard/zalo.apk
mido:/ $ exit


adb pull /sdcard/zalo.apk Desktop

/sdcard/zalo.apk: 1 file pulled. 7.7 MB/s (41895394 bytes in 5.200s)

你可以这样做:

Download and install APK Extractor in your device. It is free, and is compatible in almost all of the Android devices. Another plus point is it does not even require root or anything to work. After you have it installed, launch it. There you will see a list of apps which are in your device, which include the apps you’ve installed later, along with the system apps. Long press any app you want to extract (you can select multiple or all apps at once), and click on the extract option you see in the top. You will also have the option to share via Bluetooth or messaging. You’re done, you will see the extracted apps as AppName_AppPackage_AppVersionName_AppVersionCode.apk, which will be saved in the path /sdcard/ExtractedApks/ by default.

android中如何提取apk文件的详细说明，请访问:http://appslova.com/how-to-extract-apk-files-in-android/