android Fragment FragmentActivity 选项卡 replace add hide show

1、获取FragmentManage的方式：
getFragmentManager() // v4中，getSupportFragmentManager
2、主要的操作都是FragmentTransaction的方法
FragmentTransaction transaction = fm.benginTransatcion();//开启一个事务
transaction.add()
往Activity中添加一个Fragment
transaction.remove()
从Activity中移除一个Fragment，如果被移除的Fragment没有添加到回退栈（回退栈后面会详细说），
这个Fragment实例将会被销毁。
transaction.replace()
使用另一个Fragment替换当前的，实际上就是remove()然后add()的合体~
transaction.hide()
隐藏当前的Fragment，仅仅是设为不可见，并不会销毁
transaction.show()
显示之前隐藏的Fragment
detach()
会将view从UI中移除,和remove()不同,此时fragment的状态依然由FragmentManager维护。

Activity.java

import java.util.List;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.Spinner;import android.widget.TextView;import com.example.R;/** * 俩个Fragment切换 AFragment BFragment * */public class MainActivity extends FragmentActivity implements OnClickListener {private static final int TYPE_201 = 0;private static final int TYPE_202 = 1;private FragmentManager fragmentManager;private FragmentTransaction transaction;private Fragment fragment;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);bizData(TYPE_201);// 设置默认的Fragment}public void bizData(int type) {switch (type) {case TYPE_201:fragment = new AFragment();break;case TYPE_202:fragment = new BFragment();break;default:break;}fragmentManager = getSupportFragmentManager();transaction = fragmentManager.beginTransaction().setCustomAnimations(android.R.anim.fade_in,android.R.anim.fade_out);transaction.(R.id.container, fragment);transaction.commit();}@Overridepublic void onClick(View arg0) {switch (arg0.getId()) {case R.id.tv_continuing:bizData(TYPE_201);break;case R.id.tv_exam:bizData(TYPE_202);break;default:break;}}}

activity_main.xml 布局

import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class AFragment extends Fragment {private View view;public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {view = inflater.inflate(R.layout.fragment_a, container, false);return view;}}

import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class BFragment extends Fragment {private View view;public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {view = inflater.inflate(R.layout.fragment_b, container, false);return view;}}

android Fragment FragmentActivity 选项卡 replace add hide show

更多相关文章

随机推荐