1.报错：
BUILD FAILED
D:\workspace\ganji\build.xml:144: The following error occurred while executing this line:
D:\workspace\ganji\build.xml:271: Unable to delete file D:\workspace\ganji\tmp\proguard\tmp.jar
解决：
已经开了一个模拟器了，无法重新编译，必须关闭一个。


2.报错：
The connection to adb is down, and a severe error has occured.
解决：
cmd跳到sdk tools文件路径下
adb kill-server
然后再adb start-server

或者：右键项目——>Android Tools ——>Fix Project Properties，再run。

或者：项目——>Project——>Clean

3.报错：
The connection to adb is down, and a severe error has occured.
[2010-03-11 09:36:56 - HelloOPone] You must restart adb and Eclipse.
[2010-03-11 09:36:56 - HelloOPone] Please ensure that adb is correctly located at 'D:\OPhoneSDK_1.5
\platform-tools\adb.exe' and can be executed.
解决：
方法1.cmd中adb kill-server，然后adb -startserver
方法2.方法1不管用，那么在任务管理器中杀死adb.exe，然后重启Eclipse。
方法3.方法1和2都不管用，那么查看最后一句报错中：platform-tools中是否有adb.exe（或者在相关路径下面有没有platform-tools文件夹
，如果没有，选择新建一个文件夹，并且把tools中的文件全部复制到platform-tools中）