你应该使用片段和FragmentManager的兼容包

you should use Fragment and FragmentManager in the Compatibility Package

http://developer.android.com/sdk/compatibility-library.html

使用ADT下载它，然后去样品这里 演员/安卓/兼容性/ V4 /样本/

download it using the ADT, then go to the samples here extras/android/compatibility/v4/samples/