相关的google code android project里边的issue中论述如下：
A customer of mine running 4.1.2 just informed me that the issue is still
present! After this issue crashes my app, I have to pop up a dialog
telling them to disable all accessibility services.
Worst user experience ever, but what else can I do.
Fixed in an internal build, to be released in the next major release.
The bug doesn’t occur here in 4.2.1 (Galaxy Nexus, JOP40D).