程序启动不了
[2015-03-12 18:26:11 - HelloWord] The connection to adb is down, and a severe error has occured.
[2015-03-12 18:26:11 - HelloWord] You must restart adb and Eclipse.
[2015-03-12 18:26:11 - HelloWord] Please ensure that adb is correctly located at 'F:\adt-bundle-windows-x86_64-20140321\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' and can be executed.