当我动态添加片段时显示错误

Question

每当我动态添加片段时，它会在 Main Activity 中显示错误，它不会解析 FragmentManger class。

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    FragmentManager fragmentManager=getFragmentManager();
    FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
    FirstFragment ff= new FirstFragment();
    fragmentTransaction.add(R.id.fragment_container,ff);
    fragmentTransaction.commit();
}

感谢提前帮助..

Answer 1

    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
    transaction.add(R.id.container, MyFragment);  
    transaction.show(mapFragment);
    transaction.commit();

Answer 2

与片段混合 v4.fragment

当我动态添加片段时显示错误

When i Add Fragments Dynamically it showing error

java

android

fragment