Android Log.X不打印stacktrace

e.printStackTrace()工作正常(即将我的堆栈跟踪打印到stderr),但是Log.X根本无法打印堆栈跟踪.

例如：

} catch (IOException E) {
    Log.e("Network","Exception",E);
    e.printStackTrace();
}

输出：

08-31 03:46:21.992: W/Network(13238): Exception
08-31 03:46:22.092: W/Sy@L_197_1@.err(13238): java.net.UnkNownHostException: Unable to resolve host "...": No address associated with hostname
08-31 03:46:22.204: W/Sy@L_197_1@.err(13238):    at java.net.InetAddress.lookupHostByName(InetAddress.java:394)
08-31 03:46:22.222: W/Sy@L_197_1@.err(13238):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
08-31 03:46:22.222: W/Sy@L_197_1@.err(13238):    at java.net.InetAddress.getAllByName(InetAddress.java:214)