Fragment切换页面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    
    <FrameLayout 
        android:id="@+id/container"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>
    
    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:id="@+id/a"
            android:onClick="click"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Fragment A"/>
         <Button
             android:id="@+id/b"
            android:onClick="click"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Fragment B"/>
    </LinearLayout>
    
</LinearLayout>

FragmentActivity.java

package com.zyf;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.FrameLayout;

/**
 * fragment 使用实例
 * @see http://developer.android.com/training/basics/fragments/fragment-ui.html
 * 
 * 3.0不需要继承FragmentActivity，因为3.0将比如getFragmentManager()方法已经加入到Activity中了。
 * 
 * 3.0以前版本要通过继承FragmentActivity获得类似功能。
 */
public class FragmentActivity extends android.support.v4.app.FragmentActivity {
    
    FragmentManager fragmentManager;
    FrameLayout container;
    FragmentA a;
    FragmentB b;
     
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.main);
        
        // 得到框架布局控件
        container = (FrameLayout)findViewById(R.id.container);
        
        // 返回与此活动相关的片段进行交互的FragmentManager
        fragmentManager = this.getSupportFragmentManager();
        
        // 通过begintransaction方法获取一个事物处理实例。
        FragmentTransaction mFragmentTransaction = fragmentManager.beginTransaction();
        
        a = new FragmentA();
        b = new FragmentB();
        
        /** 在这期间可以使用 add(), remove(), 以及  replace(). 最终需要改变时执行 commit()即可 */ 
        mFragmentTransaction.add(R.id.container, a);
        mFragmentTransaction.commit();
    }
    
    public void click(View view) {
        switch (view.getId()) {
            case R.id.a: // 按钮A
                show(a);
                break;
            case R.id.b: // 按钮B
                show(b);
                break;
            default:
                break;
        }
    }
    private void show(Fragment frament) {
        FragmentTransaction mFragmentTransaction = getSupportFragmentManager().beginTransaction();
        mFragmentTransaction.replace(R.id.container, frament);
        mFragmentTransaction.addToBackStack(null);
       // mFragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);//设置动画效果
        mFragmentTransaction.commit();
    }
}

FragmentA.java

package com.zyf;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

public class FragmentA extends Fragment {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            
        View view = inflater.inflate(R.layout.fa, container, false);
        
        // "AAAAAAAAAAAAA"按钮
        Button btn = (Button)view.findViewById(R.id.next);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                startActivity(intent);
            }
        });
        return view;
    }
    
//    public void next(View view) {
//        Intent intent = new Intent(Intent.ACTION_VIEW);
//        startActivity(intent);
//    }
}

FragmentB.java

package com.zyf;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class FragmentB extends Fragment {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
    }
    
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
            
        return inflater.inflate(R.layout.fb, container, false);
    }
    
//    public void next(View view) {
//        Intent intent = new Intent(Intent.ACTION_VIEW);
//        startActivity(intent);
//    }
}