14 Fragment的V4包的使用

• activity_main.xml：

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:id="@+id/rl_fragment_id"    tools:context=".MainActivity" ></RelativeLayout>

• layout.xml一个fragment的填充布局:

  <?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#00f"    android:orientation="vertical" ></LinearLayout>

• MainActivity.java

  package com.qf.day14_fragment_demo08_v4;import com.qf.day14_fragment_demo08_v4.fragment.MyFragment;import android.os.Bundle;import android.app.Activity;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.view.Menu;/** * 1,创建一个类  继承V4包的Fragment  * 2,修改Activity 变成FragmentActivity * 3,获取管理者对象   V4 getSupportFragmentManager()  获取事务 V4 * @author sxy * */public class MainActivity extends FragmentActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获取Fragment的管理者        FragmentManager manager = getSupportFragmentManager();        //事务        FragmentTransaction transaction = manager.beginTransaction();        transaction.replace(R.id.rl_fragment_id, new MyFragment());        transaction.commit();    }}

• fragment对象:

  package com.qf.day14_fragment_demo08_v4.fragment;import com.qf.day14_fragment_demo08_v4.R;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class MyFragment extends Fragment {    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) {        // TODO Auto-generated method stub        View view = inflater.inflate(R.layout.layout, container, false);        return  view;    }}