两种方式添加Fragment

• 在xml文件中添加

  <fragment
    android:id="@+id/fragment_one"
    android:name="com.xhb.fragment.TestFragment"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>
  

• 在java代码中添加

  FragmentManager manager=getFragmentManager();
  FragmentTransaction transaction=manager.beginTransaction();
  TestFragment testFragment=new TestFragment();
  transaction.add(R.id.add_fragment,testFragment);
  TextView tv=(TextView)findViewById(R.id.item_text);
  tv.setText("to be or not to be");
  transaction.remove(testFragment).commit();
  Fragment fragment=manager.findFragmentById(R.id.fragment_one);
  if(fragment instanceof TestFragment){
    Toast.makeText(this, "true", Toast.LENGTH_SHORT).show();
  }else
  {
    Toast.makeText(this, "false", Toast.LENGTH_SHORT).show();
  }

来自为知笔记(Wiz)