21 FragmentTabHost +Fragment代码案例

注意头导航标签过多会被压缩并

• 结构
  

MainActivity.java

package com.qf.day21_fragmenttabhost_demo1;import com.qf.day21_fragmenttabhost_demo1.fragment.MyFragment;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentTabHost;import android.widget.TabHost.TabSpec;/** * 步骤1:找出书签控件 * 步骤2:初始化化书签控件 * 步骤3:添加书签到书签控件 *  * */public class MainActivity extends FragmentActivity {    //声明书签控件    private FragmentTabHost tabHost;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //1找出书签控件        tabHost = (FragmentTabHost) findViewById(R.id.tabHost);        //初始化书签控件        /**         * 参数1:上下文         * 参数2:Fragment管理者对象         * 参数3:接收Fragment的容器         */        tabHost.setup(MainActivity.this, getSupportFragmentManager(), R.id.layout_content_id);        //获取书签的名称        String[] arryTabs = getResources().getStringArray(R.array.arrTabs);        //向TabHost添加书签        for(int i=0;i<arryTabs.length;i++){            //创建书签     setIndicator设置内容            TabSpec tabSpec = tabHost.newTabSpec("tab"+i).setIndicator(arryTabs[i]);            Bundle bundle = new Bundle();            bundle.putInt("index", i+1);            /**             * 添加书签             *              * 参数1:书签             * 参数2:Fragment对象             * 参数3:是否向Fragment传值             */            tabHost.addTab(tabSpec, MyFragment.class, bundle);        }    }}

MyFragment.java

package com.qf.day21_fragmenttabhost_demo1.fragment;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.os.Bundle;import android.support.v4.app.ListFragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.SimpleAdapter;import android.widget.TextView;import com.qf.day21_fragmenttabhost_demo1.R;public class MyFragment extends ListFragment {    private  TextView tvShow;    private int index =0;    @Override    public void onAttach(Activity activity) {        // TODO Auto-generated method stub        super.onAttach(activity);        Bundle bundle = getArguments();        if(bundle!=null){            index = bundle.getInt("index");        }    }    @Override    public void onCreate(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onCreate(savedInstanceState);    }    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) {        // TODO Auto-generated method stub        View v = inflater.inflate(R.layout.fragment_layout, container, false);        tvShow = (TextView) v.findViewById(R.id.tv_show);        return v;    }    @Override    public void onActivityCreated(Bundle savedInstanceState) {        // TODO Auto-generated method stub        super.onActivityCreated(savedInstanceState);        switch (index) {        case 1:            tvShow.setText("您点击了书签1");            break;        case 2:            tvShow.setText("您点击了书签2");            break;        case 3:            tvShow.setText("您点击了书签3");            break;        default:            break;        }        SimpleAdapter adapter = new SimpleAdapter(                getActivity(),                 loadNetWorkData(),                 R.layout.item,                 new String[]{"icon","title","content"},                 new int[]{R.id.iv_item,R.id.title_item,R.id.content_item});        setListAdapter(adapter);    }    /**     * 假设从网络获取数据     * @return     */    private List<Map<String,Object>> loadNetWorkData(){        List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();        for(int i=0;i<20;i++){            Map<String, Object> map = new HashMap<String, Object>();            map.put("icon", R.drawable.ic_launcher);            map.put("title", "郭XX大战曹XXX"+i+"tab"+index);            map.put("content", "降龙十八掌赢"+i+"tab"+index);            list.add(map);        }        return list;    }    @Override    public void onStart() {        // TODO Auto-generated method stub        super.onStart();    }    @Override    public void onResume() {        // TODO Auto-generated method stub        super.onResume();    }    @Override    public void onPause() {        // TODO Auto-generated method stub        super.onPause();    }    @Override    public void onStop() {        // TODO Auto-generated method stub        super.onStop();    }    @Override    public void onDestroyView() {        // TODO Auto-generated method stub        super.onDestroyView();    }    @Override    public void onDestroy() {        // TODO Auto-generated method stub        super.onDestroy();    }    @Override    public void onDetach() {        // TODO Auto-generated method stub        super.onDetach();    }}

activity_main.xml

<android.support.v4.app.FragmentTabHost     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:id="@+id/tabHost"    tools:context=".MainActivity" >    <FrameLayout        android:id="@+id/layout_content_id"        android:layout_marginTop="50dp"        android:layout_width="match_parent"        android:layout_height="match_parent"     /></android.support.v4.app.FragmentTabHost>

fragment_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"    android:orientation="vertical" >    <TextView         android:id="@+id/tv_show"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textColor="#f00"        android:text="AAA"        />    <ListView        android:id="@android:id/list"         android:layout_width="match_parent"        android:layout_height="match_parent"        ></ListView></LinearLayout>