自己总结的在android中常会出现的不好解决的问题和方法1.报错：BUILD FAILEDD:\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。用于ant2.报错：The connection to adb is down, a
