android学习——The method replace 4000 (int, Fragment) in the type FragmentTransaction is not applicable for t

学习fragment，做例子时遇到了这样的错误：

The method replace(

int

, Fragment) in the type FragmentTransaction is not applicable 

for

 

the arguments (

int

, MyFragment)

原码是这样

public void onCheckedChanged(RadioGroup group, int checkedId) {switch (checkedId) {case R.id.rbJob:job = new JobFragment();getSupportFragmentManager().beginTransaction().replace(R.id.main_content, job).commit();break;case R.id.rbEdu:edu = new EduFragment();getSupportFragmentManager().beginTransaction().replace(R.id.main_content, edu).commit();break;case R.id.rbLife:life = new LifeFragment();getSupportFragmentManager().beginTransaction().replace(R.id.main_content, life).commit();break;case R.id.rbMe:me = new MeFragment();getSupportFragmentManager().beginTransaction().replace(R.id.main_content, me).commit();break;default:break;}}遇到这个错误只会有这样几种可能：

1，首先确认Activity继承了FragmentActivity

2，Activity和Fragment中导的包不一致，我这里都是用的support.v4包，v4中，用的是getSupportFragmentManager