Android中Fragment的基本用法示例总结

 FragmentA fragment = new FragmentA();
 getSupportFragmentManager().beginTransaction()
  .add(R.id.XXX, fragment, "fragment")
//  .addToBackStack("") //加入回退栈
  .commit;

FragmentManager manager = getSupportFragmentManager(); 
FragmentTransaction transaction = manager.beginTransaction(); 
transaction.add(R.id.fragment_container, fragment, "fragment"); 
transaction.commit(); 

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;

FragmentA fragment = new FragmentA();
getSupportFragmentManager().beginTransaction()
 .replace(R.id.XXX, fragment,"fragment")
 .commit();

 Fragment fragment = getSupportFragmentManager().findFragmentByTag("fragment");
 getSupportFragmentManager().beginTransaction()
  .remove(fragment)
  .commit();

 Fragment fragment = getSupportFragmentManager().findFragmentByTag("fragment");
 getSupportFragmentManager().beginTransaction()
  .hide(fragment)
  .commit();

 Fragment fragment = getSupportFragmentManager().findFragmentByTag("fragment");
 getSupportFragmentManager().beginTransaction()
  .show(fragment)
  .commit();

Fragment replaceFragment = getActivity().getSupportFragmentManager().findFragmentByTag("first_fragment");
    getActivity().getSupportFragmentManager().beginTransaction()
    .detach(replaceFragment)
    .attach(replaceFragment)
    .commit();

 @Override
 public void onBackPressed() {
 if (getSupportFragmentManager().getBackStackEntryCount() <= 1) { //这里是取出我们返回栈存在Fragment的个数
  finish();
 } else { //取出我们返回栈保存的Fragment,这里会从栈顶开始弹栈
  getSupportFragmentManager().popBackStack();
 }
 }

void popBackStack(String name, int flags); 

while (getSupportFragmentManager().getBackStackEntryCount()>1) {
 getSupportFragmentManager().popBackStackImmediate();
}

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
 // 方式一
 View view = inflater.inflate(R.layout.XXX, container, false);
  // 方式二
// View view = inflater.inflate(R.layout.XXX, null);
 return view;
 }

getChildFragmentManager().beginTransaction()
 .replace(R.id.XXX, fragment)
 .addToBackStack(null)
 .commit();