Click project run and report the following error: [15:27:13-QualityPicture_Client1.3.1.9.7.1] ------------------------------ [15:27:13-QualityPicture_Client1.3.1.9.7.1] Android Launch! [15:27:13-QualityPicture_Client1.3.1.9.7.1] The connection to adb is down, and a severe error has occured. [15:27:13-QualityPicture_Client1.3.1.9.7.1] You must restart adb and Eclipse. [15:27:13-QualityPicture_Client1.3.1.9.7.1] Please ensure that adb is correctly located at 'd: \ adt-bundle-windows-x86 \ sdk \ platform-tools \ adb.exe 'and can be executed. it's actually very easy. You need to change the system. Unified environment variable path, changed from 'd: \ adt-bundle-windows-x86 \ sdk \ tools to 'd: \ adt-bundle-windows-x86 \ sdk \ platform-tools you can see \ toolsdirectory found an adb_has_moved.txt file, it clearly tells The reason: The adb tool has moved to platform-tools. Originally, after SDK R8, the SDK needed a new component support, which is called Platform-tools. adb has been migrated to this directory. In addition, the adb_has_moved.txt file also indicates that \ platform-toolshelper must be added to the PATH environment variable to enable adb.exe to be started anywhere. Restart the computer, start eclipse, and click run. the following error is reported: [15:27:13-QualityPicture_Client1.3.1.9.7.1] ADB server didn't ACK [2013-09-14 15:27:13-QualityPicture_Client1.3.1.9.7.1] * failed to start daemon * So I am Baidu and have referred to this article ). But I didn't see that. But I still follow the above operations to kill the service and then start the service. Then I will restart it. Some people say that the method of recording as a video is as follows: