fragment的使用

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ff00f0"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 1"
        android:textColor="#000000"
        android:textSize="25sp" />

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffff00"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/fragment2_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is fragment 2"
        android:textColor="#000000"
        android:textSize="25sp" />

</LinearLayout>

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

public class Fragment1 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment1, container, false);
    }

}

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

public class Fragment2 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment2, container, false);
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/btn_add_frag1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="ADD  Fragment1" />

    <Button
        android:id="@+id/btn_add_frag2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="ADD  Fragment2" />

    <Button
        android:id="@+id/btn_remove_frag2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Remove  Fragment2" />

    <Button
        android:id="@+id/btn_repalce_frag1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="replace  Fragment1" />

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

import java.util.ArrayList;
import java.util.List;

import android.graphics.Color;
import android.os.Bundle;
import android.app.Activity;
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.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MainActivity extends FragmentActivity {

    /** DrawerLayout */
    private DrawerLayout mDrawerLayout;
    /** 左边栏 */
    private RelativeLayout leftLayout;
    /** 右边栏 */
    private RelativeLayout rightLayout;
    /** 左边栏菜单 */
    private ListView mMenuListView;
    /** 菜单列表 */
    private String[] mMenuTitles = {"新闻","订阅","图片","视频","跟帖","投票"};

    private List<ContentModel> list;

    private ContentAdapter adapter;

    private Button button1;

    private Button button2;

    private Button button3;

    private Button button4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button1 = (Button) findViewById(R.id.btn_add_frag1);
        button2 = (Button) findViewById(R.id.btn_add_frag2);
        button3 = (Button) findViewById(R.id.btn_remove_frag2);
        button4 = (Button) findViewById(R.id.btn_repalce_frag1);

        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Fragment1 fragment1 = new Fragment1();
                addFragment(fragment1, "fragment1");
            }
        });

        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Fragment2 fragment2 = new Fragment2();
                addFragment(fragment2, "fragment2");
            }
        });

        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                removeFragment2();
            }
        });

        button4.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                replaceFragment1();
            }
        });

/*        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
        leftLayout=(RelativeLayout) findViewById(R.id.left);
        rightLayout=(RelativeLayout) findViewById(R.id.right);
        mMenuListView =(ListView) leftLayout.findViewById(R.id.left_listview);

        initData();
        adapter=new ContentAdapter(this, list);
        mMenuListView.setAdapter(adapter);
        mMenuListView.setOnItemClickListener(new DrawerItemClickListener());*/
    }

    private void initData() {
        list=new ArrayList<ContentModel>();

        list.add(new ContentModel(R.drawable.doctoradvice2, mMenuTitles[0]));
        list.add(new ContentModel(R.drawable.infusion_selected, mMenuTitles[1]));
        list.add(new ContentModel(R.drawable.mypatient_selected, mMenuTitles[2]));
        list.add(new ContentModel(R.drawable.mywork_selected, mMenuTitles[3]));
        list.add(new ContentModel(R.drawable.nursingcareplan2, mMenuTitles[4]));
        list.add(new ContentModel(R.drawable.personal_selected, mMenuTitles[5]));
    }

    /**
     * ListView上的Item点击事件
     *
     */
    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            selectItem(position);
        }
    }


    /**
     * 切换主视图区域的Fragment
     *
     * @param position
     */
    private void selectItem(int position) {
        // TODO Auto-generated method stub
        Fragment fragment = new ContentFragment();
        Bundle args = new Bundle();
        switch (position) {
            case 0:
                args.putString("key", mMenuTitles[position]);
                break;
            case 1:
                args.putString("key", mMenuTitles[position]);
                break;
            case 2:
                args.putString("key", mMenuTitles[position]);
                break;
            case 3:
                args.putString("key", mMenuTitles[position]);
                break;
            case 4:
                args.putString("key", mMenuTitles[position]);
                break;
            case 5:
                args.putString("key", mMenuTitles[position]);
                break;
            default:
                break;
        }
        fragment.setArguments(args); // FragmentActivity将点击的菜单列表标题传递给Fragment
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction().replace(R.id.fragment_layout, fragment).commit();

        // 更新选择后的item和title，然后关闭菜单
        mMenuListView.setItemChecked(position, true);
        setTitle(mMenuTitles[position]);
        mDrawerLayout.closeDrawer(mMenuListView);
    }

    private void addFragment(Fragment fragment, String tag) {
        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.add(R.id.fragment_container, fragment, tag);
        transaction.commit();
    }

    private void removeFragment2() {
        FragmentManager manager = getSupportFragmentManager();
        Fragment fragment = manager.findFragmentByTag("fragment2");
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.remove(fragment);
        transaction.commit();
    }

    private void replaceFragment1() {
        FragmentManager manager = getSupportFragmentManager();
        Fragment2 fragment2 = new Fragment2();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.replace(R.id.fragment_container, fragment2);
        transaction.commit();
    }

}