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31.android 简单的左边listview右边fragment，点击item切换页面

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导读：本篇文章讲解 31.android 简单的左边listview右边fragment，点击item切换页面，希望对大家有帮助，欢迎收藏，转发！站点地址：www.bmabk.com

//先上效果图

31.android 简单的左边listview右边fragment，点击item切换页面

 

//以下是简写，不带布局文件，最下面还有详细的，带布局文件的：

//———————-直接上代码Activity页面———————————-

//这个类是继承的BaseActivity

public class YueDouShanCheng extends BaseActivity{
    private ListView mListView;
    private FrameLayout mYueDouFrame;
    private FragmentManager supportFragmentManager;
    private FragmentTransaction transaction;
    private List<yuedoubaen.ResultListBean> resultList;
    private List<Fragment>mFragmentList=new ArrayList<>();
    private MyListViewApader apader;
    private ImageView mYueDouFanhui;

//—————–初始化控件—————–

@Override
protected void initView() {
    mListView = findViewById(R.id.mListView);
    mYueDouFrame = findViewById(R.id.mYueDouFrame);
    mYueDouFanhui = findViewById(R.id.mYueDouFanhui);
    mYueDouFanhui.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });

}

//———————————布局————————————-

@Override
protected int getActivityLayout() {
    return R.layout.yuedoulayout;
}



    @Override
    protected void initData() {
//---------------------------------fragment管理器
        supportFragmentManager = getSupportFragmentManager();
        transaction = supportFragmentManager.beginTransaction();

                //get 异步
                OkHttpClient client = new OkHttpClient.Builder().build();
                Request request = new Request.Builder().url("https://api.dyhoa.com/dapi/v4/mall").method("GET", null).build();
                Call call = client.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        //请求失败
                    }

                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        //请求成功
                        String string = response.body().string();
                        Gson gson = new Gson();
                        yuedoubaen yuedoubaen = gson.fromJson(string, yuedoubaen.class);
                        resultList = yuedoubaen.getResultList();
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
 //----------------------------------左边listview适配器，请求回来的数据，适配左边的listview----------------------
                                apader = new MyListViewApader(resultList,YueDouShanCheng.this);
                                mListView.setAdapter(apader);
//--------------------------------fragment复用与添加到fragment管理器的方法 initData2()--------------------------
                                initData2();
//------------------------------------默认切换到第一个item的fragment界面---------------------------------------
                                replese(0);
//-------------------------------------默认选中listview第一行-----------------------------------------------
                                resultList.get(0).setSelect(true);
                            }
                        });
                    }
                });



        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//---------------------------------点击item通过postation切换页面-------------------------------------------
                replese(position);

                //在bean类里写的一个标记 boolean类型的isSelect是关键，默认无状态， 并设置get set方法
                //一进点击事件默认把所有item的isSelect设为false 表示都没选中
                for (int i = 0; i <resultList.size() ; i++) {
                    yuedoubaen.ResultListBean resultListBean = resultList.get(i);
                    resultListBean.setSelect(false);
                }

                //点哪个那个为true 表示选中
                resultList.get(position).setSelect(true);
                //在刷新一下适配器就ok
                apader.notifyDataSetChanged();
            }
        });

    }



    //复用
    private void initData2() {
//定义了个数组，这些url是右边fragment的数据
        String str[]={
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=bad6045f74be22701cca6caee2a16f38&signature=8aa6882f38aae1d39a26d26149834f7fb3e52f03&categoryId=11&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752569&os=1501&nonceStr=5513c36e7c334dd20ab0ffeac130dca8",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=eab90cdfe6055b9e6bf05042a44c6ece&signature=b8349fbdaf039fc5a5ff9271f0303000370d05dd&categoryId=12&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752665&os=1501&nonceStr=43f8e83d15ca083fb58e9b745e5de0d4",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=d3feedfa2296fdea2929993e8393fdcc&signature=0e4ccfa9ec0a11d4377e416f803c6f0ab113563d&categoryId=21&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752732&os=1501&nonceStr=2aec405d4b5959235c49ec1d78edb0c2",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=3e9b48daa39e1055de40dd65ad424014&signature=aff890653c188a8c3fa72eee7695d09158518dbb&categoryId=13&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752814&os=1501&nonceStr=8068fee5f49946b3a8f85b1007cd40bb",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=c9f0f7e11561fbec4e05e00965c8b8c7&signature=b6919e18067363d7b5fd2335dfac3338b132e731&categoryId=14&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752855&os=1501&nonceStr=ee8374ec4e4ad797d42350c904d73077",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=1efb492116e7fece7753bc4ab0cdc667&signature=83f6ba42c465b22be873257a7e8c6652e430d61a&categoryId=15&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752915&os=1501&nonceStr=a29d1598024f9e87beab4b98411d48ce",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=216d3d071ce20d33d76e0931cc3e3f54&signature=13a7da4784a5aa1213a33c800680b5531cbeafbf&categoryId=16&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752954&os=1501&nonceStr=5d293363c4be77f134214bec786e2feb",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=9ced84694331e90a565a6cae395734f6&signature=ed9cb7e7273de3855cb20ce813122c69d2836679&categoryId=17&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530752986&os=1501&nonceStr=3636638817772e42b59d74cff571fbb3",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=dd41a6a3c2294d745d86237c88959090&signature=6c234dfb3cf8b513ae34a0709897a866f72f216f&categoryId=19&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530753009&os=1501&nonceStr=b9f35816f460ab999cbc168c4da26ff3",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=baebde57d5f169a2fd2b247d9657a405&signature=bace9e592dd311691003c82c9f166570a5b47b48&categoryId=22&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530753050&os=1501&nonceStr=5680522b8e2bb01943234bce7bf84534",
                "https://api.dyhoa.com/dapi/v4/mall/productList?nextPage=1&terminal=1601&sign=7f763ad694cd17eb4d713b2c82ff66b0&signature=744e9d8e6f79929134a3716303c78f2e16ad90fe&categoryId=23&pageSize=10&version=3.6.8.9&phone=18201222438&timestamp=1530753084&os=1501&nonceStr=07042ac7d03d3b9911a00da43ce0079a"
        };
//--------------------这里是复用，数组多大，复用多少，并传递过去resultList里实体bean类的一个Name，
        YueDouFragment yueDouFragment = new YueDouFragment();
        for (int i = 0; i <str.length ; i++) {
//------------------------------传递了集合的Name属性，和数组的url地址-------------------------------------
            Fragment fuYong = yueDouFragment.getFuYong(resultList.get(i).getName(), str[i]);
//------------------------------集合添加这个fragment--------------------------------------------------
            mFragmentList.add(fuYong);
        }
//----------------------------for循环mFragmentList集合的长度，并添加到fragment管理器里----------------------
        for (int i = 0; i < mFragmentList.size(); i++) {
            transaction.add(R.id.mYueDouFrame,mFragmentList.get(i));
        }
//----------------------------------------提交----------------------------------------------------
        transaction.commitAllowingStateLoss();
    }



//-------------------------------切换fragment的方法，通过postation--------------------------------
    private void replese(int position) {
//重新得到了一个transaction 对象
        FragmentTransaction transaction = supportFragmentManager.beginTransaction();
//-----------------------------------for循环全部隐藏--------------------------------------------------------
        for (int i = 0; i <mFragmentList.size() ; i++) {
            Fragment fragment = mFragmentList.get(i);
            transaction.hide(fragment);
        }
//点击的哪个下标，显示哪个fragment
        switch (position){
            case 0:
                transaction.show(mFragmentList.get(0)).commitAllowingStateLoss();
                break;
            case 1:
                transaction.show(mFragmentList.get(1)).commitAllowingStateLoss();
                break;
            case 2:
                transaction.show(mFragmentList.get(2)).commitAllowingStateLoss();
                break;
            case 3:
                transaction.show(mFragmentList.get(3)).commitAllowingStateLoss();
                break;
            case 4:
                transaction.show(mFragmentList.get(4)).commitAllowingStateLoss();
                break;
            case 5:
                transaction.show(mFragmentList.get(5)).commitAllowingStateLoss();
                break;
            case 6:
                transaction.show(mFragmentList.get(6)).commitAllowingStateLoss();
                break;
            case 7:
                transaction.show(mFragmentList.get(7)).commitAllowingStateLoss();
                break;
            case 8:
                transaction.show(mFragmentList.get(8)).commitAllowingStateLoss();
                break;
            case 9:
                transaction.show(mFragmentList.get(9)).commitAllowingStateLoss();
                break;
            case 10:
                transaction.show(mFragmentList.get(10)).commitAllowingStateLoss();
                break;
        }
    }


}

 

//—————————–复用的fragment页面———————————–

 

//这个类是继承的BaseFragment

public class YueDouFragment extends BaseFragment{

    private String name;
    private String name2;
    private TextView mYeDouText;
    private RecyclerView mYueDouRecy;


@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
//------------在这里得到从下面的bundle里传来的两个string，并赋值给name和name2，并全局化.--------- 
    Bundle arguments = getArguments();
    if (arguments != null) {
        name = arguments.getString("string");
        name2 = arguments.getString("string2");
    }
}

@Override
protected void initView(View view) {
    mYeDouText = view.findViewById(R.id.mYeDouText);
    mYueDouRecy = view.findViewById(R.id.mYueDouRecy);
}

@Override
protected int getFragmentLayout() {
    return R.layout.yuedoufragmentlayout;
}

 
//复用的静态方法，两个参数都是String类型的，代表从Activity里传过来的一个集合的Name，一个数组的url地址
public static Fragment getFuYong(String string,String string2) {
    YueDouFragment yueDouFragment = new YueDouFragment();
    Bundle bundle = new Bundle();
//得到并赋值给string和string2，通过bundle传递
    bundle.putString("string", string);
    bundle.putString("string2", string2);
    yueDouFragment.setArguments(bundle);
    return yueDouFragment;
}
    @Override
    protected void initData() {
         //get 异步
                 OkHttpClient client = new OkHttpClient.Builder().build();
//--------------------------------通过传过来的name2发起网络请求-------------------------------------------
                 Request request = new Request.Builder().url(name2).method("GET", null).build();
                 Call call = client.newCall(request);
                 call.enqueue(new Callback() {
                     @Override
                     public void onFailure(Call call, IOException e) {
                         //请求失败
                     }

                     @Override
                     public void onResponse(Call call, Response response) throws IOException {
                         //请求成功
                         String string = response.body().string();
                         Gson gson = new Gson();
                         final YueDouBean2 yueDouBean2 = gson.fromJson(string, YueDouBean2.class);
//-----------------------这个p_count 是每个fragment里的item数量-------------------------------------------
                         final int p_count = yueDouBean2.getResult().getP_count();
                         final List<YueDouBean2.ResultListBean.ListBean> list = yueDouBean2.getResultList().getList();
                         MyApp.mContext.runOnUiThread(new Runnable() {
                             @Override
                             public void run() {
//传过来的name，也就是左边listview的name，加上每个fragment里的item数量，赋值给mYeDouText，例如上图里的“礼卡礼卷(4)”
                                 mYeDouText.setText(name+"("+p_count+")");

//------------------------------然后RecyclerView适配器，适配里面的数据------------------------
                                 LinearLayoutManager manager = new LinearLayoutManager(getContext());
                                 mYueDouRecy.setLayoutManager(manager);
                                 YueDouApader yueDouApader = new YueDouApader(R.layout.yuedouapaderlayout, list);
                                 mYueDouRecy.setAdapter(yueDouApader);
                             }
                         });
                     }
                 });
    }
}

 

//listview适配器，还得实现一个点击哪个，item变成白色，还出现一个红色的竖条。

 

public class MyListViewApader extends BaseAdapter {


    private List<yuedoubaen.ResultListBean> mlist;
    private Context context;

    public MyListViewApader(List<yuedoubaen.ResultListBean> mlist, Context context) {
        this.mlist = mlist;
        this.context = context;
    }

    @Override
    public int getCount() {
        return mlist.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @SuppressLint("ViewHolder")
    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
       ViewHolder holder;
        if (convertView==null){
            holder=new ViewHolder();
            convertView = LayoutInflater.from(context).inflate(R.layout.listviewlayout, null);
            holder.mListViewText=convertView.findViewById(R.id.mListViewText);
            holder.mYueDouXianShi = convertView.findViewById(R.id.mYueDouXianShi);
            holder.mYueDouLin=convertView.findViewById(R.id.mYueDouLin);

            convertView.setTag(holder);
        }else {
            holder= (ViewHolder) convertView.getTag();
        }
        String name = mlist.get(position).getName();
        holder.mListViewText.setText(name);

        //true和false用来解决复用问题的，如果当前标记为选中状态那么item字体颜色变红，红色竖条显示，item背景色变白
        if (mlist.get(position).isSelect()){
            holder.mListViewText.setTextColor(Color.RED);
            holder.mYueDouXianShi.setVisibility(View.VISIBLE);
            holder.mYueDouLin.setBackgroundColor(Color.WHITE);
        }
        //如果不是选中状态，item字体颜色变黑，红色竖条隐藏，item背景还变灰
        else {
            holder.mListViewText.setTextColor(Color.BLACK);
            holder.mYueDouXianShi.setVisibility(View.GONE);
            holder.mYueDouLin.setBackgroundColor(Color.parseColor("#EBEBEB"));
        }

        return convertView;
    }

    public static class ViewHolder {
        public TextView mListViewText;
        public TextView mYueDouXianShi;
        public LinearLayout mYueDouLin;
    }
}

//以下是一个详细的比较简单的：  

31.android 简单的左边listview右边fragment，点击item切换页面

 

31.android 简单的左边listview右边fragment，点击item切换页面

 //第一步 我的Activity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:orientation="horizontal"
    >
    <ListView
        android:background="#EBEBEB"
        android:id="@+id/mListView"
        android:layout_weight="2"
        android:layout_width="0dp"
        android:layout_height="match_parent"/>

    <FrameLayout
        android:id="@+id/mFrame"
        android:layout_weight="8"
        android:layout_width="0dp"
        android:layout_height="match_parent"/>
</LinearLayout>

//第二步 我的Activity代码实现：

 

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {

    private ListView mListView;
    private FrameLayout mFrame;
    private List<User> mList = new ArrayList<>();
    private List<Fragment> mFragmentList = new ArrayList<>();
    private FragmentManager supportFragmentManager = getSupportFragmentManager();
    private MyListViewApader apader;

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

    private void initView() {
        mListView = (ListView) findViewById(R.id.mListView);
        mFrame = (FrameLayout) findViewById(R.id.mFrame);
    }

    private void initData() {
        //左边listView集合添加数据，适配器适配
        listViewData();
        //添加fragment,复用fragment
        addFragment();
        //默认选中ListView第一条item
        replese(0);
        //ListView第一条item的Select为true
        mList.get(0).setSelect(true);
        //listView点击事件
        mListView.setOnItemClickListener(this);
    }

    /*
     * 方法名： listViewData()
     * 功    能：左边listView集合添加数据
     * 参    数：无
     * 返回值：无
     */
    private void listViewData() {
        for (int i = 0; i < 10; i++) {
            mList.add(new User("页面" + i));
        }
        //适配器适配
        apader = new MyListViewApader(mList, this);
        mListView.setAdapter(apader);
    }

    /*
    * 方法名：addFragment()
    * 功    能：添加fragment,复用fragment
    * 参    数：无
    * 返回值：无
    */
    private void addFragment() {
        FragmentTransaction transaction = supportFragmentManager.beginTransaction();
        MultiplexingFragment multiplexingFragment = new MultiplexingFragment();
        for (int i = 0; i < mList.size(); i++) {
            Fragment multiplexing = multiplexingFragment.getMultiplexing(mList.get(i).getName(), "");
            mFragmentList.add(multiplexing);
        }
        //添加fragment
        for (int i = 0; i < mFragmentList.size(); i++) {
            transaction.add(R.id.mFrame, mFragmentList.get(i));
        }
        transaction.commit();
    }

    /*
     * 方法名：replese(int position)
     * 功    能：根据点击事件的下标切换fragment页面
     * 参    数：int position
     * 返回值：无
     */
    private void replese(int position) {
        FragmentTransaction transaction = supportFragmentManager.beginTransaction();
        //所有的fragment隐藏，position对应的fragment显示，提交。
        for (int i = 0; i < mFragmentList.size(); i++) {
            Fragment fragment = mFragmentList.get(i);
            transaction.hide(fragment);
        }
        transaction.show(mFragmentList.get(position)).commit();
    }

    /*
     * 方法名：onItemClick(AdapterView<?> parent, View view, int position, long id)
     * 功    能：ListView的item点击事件
     * 参    数：AdapterView<?> parent, View view, int position, long id
     * 返回值：无
     */
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        //切换fragment
        replese(position);
        //在bean类里写的一个标记 boolean类型的isSelect是关键，默认无状态， 并设置get set方法
        //集合里所有数据的Select设置为flase,position下标所对应的item的Select为true，刷新适配器。
        for (int i = 0; i <mList.size() ; i++) {
            mList.get(i).setSelect(false);
        }
        mList.get(position).setSelect(true);
        //在刷新一下适配器就ok
        apader.notifyDataSetChanged();

        Toast.makeText(MainActivity.this, "" + position, Toast.LENGTH_SHORT).show();
    }
}

//第三步 创建User.java这个Bean类：

 

public class User {
    private String name;
    //isSelect用来在适配器进行item判断，并设置get set方法
    private boolean isSelect;

    public User(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public boolean isSelect() {
        return isSelect;
    }

    public void setSelect(boolean select) {
        isSelect = select;
    }
}

//第四步 创建MyListViewApader适配器：

 

public class MyListViewApader extends BaseAdapter {
    private List<User> mlist;
    private Context context;

    public MyListViewApader(List<User> mlist, Context context) {
        this.mlist = mlist;
        this.context = context;
    }

    @Override
    public int getCount() {
        return mlist.size();
    }

    @Override
    public Object getItem(int position) {
        return mlist.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @SuppressLint("ViewHolder")
    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            holder = new ViewHolder();
            convertView = LayoutInflater.from(context).inflate(R.layout.item_layout, null);
            holder.mListViewText = convertView.findViewById(R.id.mListViewText);
            holder.mYueDouXianShi = convertView.findViewById(R.id.mYueDouXianShi);
            holder.mYueDouLin = convertView.findViewById(R.id.mYueDouLin);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        String name = mlist.get(position).getName();
        holder.mListViewText.setText(name);

        //true和false用来解决复用问题的，如果当前标记为选中状态那么item字体颜色变红，红色竖条显示，item背景色变白
        if (mlist.get(position).isSelect()) {
            holder.mListViewText.setTextColor(Color.RED);
            holder.mYueDouXianShi.setVisibility(View.VISIBLE);
            holder.mYueDouLin.setBackgroundColor(Color.WHITE);
        }
        //如果不是选中状态，item字体颜色变黑，红色竖条隐藏，item背景还变灰
        else {
            holder.mListViewText.setTextColor(Color.BLACK);
            holder.mYueDouXianShi.setVisibility(View.GONE);
            holder.mYueDouLin.setBackgroundColor(Color.parseColor("#EBEBEB"));
        }

        return convertView;
    }

    public static class ViewHolder {
        public TextView mListViewText;
        public TextView mYueDouXianShi;
        public LinearLayout mYueDouLin;
    }
}

//第五步 MyListViewApader适配器的布局文件item_layout.xml：

 

<?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"
    >
    <LinearLayout
        android:id="@+id/mYueDouLin"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="50dp">
        <TextView
            android:visibility="gone"
            android:id="@+id/mYueDouXianShi"
            android:background="@android:color/holo_red_dark"
            android:layout_width="3dp"
            android:layout_height="match_parent" />

        <TextView
            android:gravity="center"
            android:id="@+id/mListViewText"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </LinearLayout>

</LinearLayout>

//第六步 创建MultiplexingFragment这个fragment用来复用：

 

public class MultiplexingFragment extends Fragment {

    private String name;
    private String name2;
    private TextView mText;

    public MultiplexingFragment() {
        // Required empty public constructor
    }


    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//------------在这里得到从下面的bundle里传来的两个string，并赋值给name和name2，并全局化.---------
        Bundle arguments = getArguments();
        if (arguments != null) {
            name = arguments.getString("string");
            name2 = arguments.getString("string2");
        }
    }


    //复用的静态方法，两个参数都是String类型的，代表从Activity里传过来的一个集合的Name，一个数组的url地址
    public static Fragment getMultiplexing(String string, String string2) {
        MultiplexingFragment multiplexingFragment = new MultiplexingFragment();
        Bundle bundle = new Bundle();
//得到并赋值给string和string2，通过bundle传递
        bundle.putString("string", string);
        bundle.putString("string2", string2);
        multiplexingFragment.setArguments(bundle);
        return multiplexingFragment;
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View inflate = inflater.inflate(R.layout.fragment_multiplexing, container, false);
        initView(inflate);
        return inflate;
    }


    private void initView(View inflate) {
        mText = (TextView) inflate.findViewById(R.id.mText);
        mText.setText(name);
    }
}

//第七步 MultiplexingFragment的布局文件fragment_multiplexing.xml：

 

<FrameLayout 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"
    tools:context="com.gannan.gannan.MultiplexingFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:id="@+id/mText"
        android:textSize="20sp"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>

//—————————————————————————–完—————————————————————————–

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