活动类中的代码

public void showHomePage(View view) {
        Fragment fragment = new Fragment();
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
        fragment.getParentFragment();
    }

我想从活动类切换到主片段类。但我得到了这个错误。

java.lang.IllegalArgumentException: No view found for id 0x7f0a007c (com.example.tripist:id/container) for fragment Fragment{a779e36} (17ab85dc-c825-4c86-9e04-cd96dd74f27b) id=0x7f0a007c}

有人能帮我吗？