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今天在做android项目时，加入第三方包，一编译就报错。
错误如下：
[2012-01-13 14:51:25 - Cobra] Dx warning: Ignoring InnerClasses attribute for an anonymous inner class
(org.ksoap2.transport.KeepAliveHttpsTransportSE$1) that doesn't come with an
associated EnclosingMethod attribute. This class was probably produced by a
compiler that did not target the modern .class file format. The recommended
solution is to recompile the class from source, using an up-to-date compiler
and without specifying any "-target" type options. The consequence of ignoring
this warning is that reflective operations on this class will incorrectly
indicate that it is *not* an inner class.
Failed to load properties file for project 'Cobra'
于是我把注意力放到第三方包可能加错的情况中。于是按照网上的说法，将包都重新加了一遍还是报错。
错误如下：
[2012-01-13 14:51:25 - Cobra] Dx warning: Ignoring InnerClasses attribute for an anonymous inner class
(org.ksoap2.transport.KeepAliveHttpsTransportSE$1) that doesn't come with an
associated EnclosingMethod attribute. This class was probably produced by a
compiler that did not target the modern .class file format. The recommended
solution is to recompile the class from source, using an up-to-date compiler
and without specifying any "-target" type options. The consequence of ignoring
this warning is that reflective operations on this class will incorrectly
indicate that it is *not* an inner class.
Failed to load properties file for project 'Cobra'
于是我把注意力放到第三方包可能加错的情况中。于是按照网上的说法，将包都重新加了一遍还是报错。
最后发现是debug证书的问题。我到C:\Users\liyang\.Android\debug.keystore目录下看到
大家可以看到debug.keystore的日期是 2011-1-11，而今天是2012-1-13日，果然如网上所说，超过了一年，debug证书过期了。
于是我删掉这个文件，重新编译运行，果然没问题了，而此时 该目录又重新生成了debug.keystore，日期是今天。
如果你想重现这个问题，也很简单，必须clear工程，否则它不会再到该目录下装载证书，即使你把这个文件换成2010的也不会不错，而你clear后，
项目会重新装载证书，检测证书的有效期。希望对大家有所帮助。
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