Android实现顶部底部双导航界面功能

<RelativeLayout xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android"
 xmlns:tools="http://scheR_280_11845@as.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="${relativePackagE}.${activityClass}" >

 <FrameLayout
 android:id="@+id/main_view"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:layout_above="@+id/main_tab"
 android:layout_alignParentLeft="true"
 android:layout_alignParentTop="true" >

 </FrameLayout>

 <view
 android:id="@+id/main_tab"
 android:layout_width="match_parent"
 android:layout_height="50dp"
 android:layout_alignParentBottom="true"
 android:layout_alignParentLeft="true" 
 class="android.support.v4.app.FragmentTabHost" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:BACkground="#F6F6F6"
 android:gravity="center"
 android:orientation="vertical" >

 <ImageView
 android:id="@+id/foot_iv"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:src="@drawable/home1" />

 <TextView
 android:id="@+id/foot_tv"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginTop="3dp"
 android:text="首页"
 android:textColor="@color/tab_color" />

</LinearLayout>

package com.gjn.mynavigation;

import android.os.bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTabHost;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TabWidget;
import android.widget.TextView;
import android.widget.TabHost.onTabchangelistener;
import android.widget.TabHost.TabSpec;

public class MainActivity extends FragmentActivity implements OnTabchangelistener {

 private FragmentTabHost mTabHost;
 @Override
 protected void onCreate(Bundle savedInstanceStatE) {
 super.onCreate(savedInstanceStatE);
 requestWindowFeature(Window.FEATURE_NO_titlE);
 setContentView(R.layout.activity_main);
 
 //初始化FragmentTabHost
 initHost();
 //初始化底部导航栏
 initTab();
 //默认选中
 mTabHost.onTabChanged(TabDb.getTabsTxt()[0]);
 }

 private void initTab() {
 String[] tabs = TabDb.getTabsTxt();
 for (int i = 0; i < tabs.length; i++) {
 //新建TabSpec
 TabSpec tabSpec = mTabHost.newTabSpec(TabDb.getTabsTxt()[i]);
 //设置view
 View view = LayoutInflater.from(this).inflate(R.layout.tabs_foot,null);
 ((TextView) view.findViewById(R.id.foot_tv)).setText(TabDb.getTabsTxt()[i]);
 ((ImageView) view.findViewById(R.id.foot_iv)).setImageresource(TabDb.getTabsImg()[i]);
 tabSpec.seTinDicator(view);
 //加入TabSpec
 mTabHost.addTab(tabSpec,TabDb.getFramgent()[i],null);
 }
 }
 /***
 * 初始化Host
 */
 private void initHost() {
 mTabHost = (FragmentTabHost) findViewById(R.id.main_tab);
 //调用setup方法 设置view
 mTabHost.setup(this,getSupportFragmentManager(),R.id.main_view);
 //去除分割线
 mTabHost.getTabWidget().setDividerDrawable(null);
 //监听事件
 mTabHost.setOnTabChangedListener(this);
 }

 @Override
 public void onTabChanged(String arg0) {
 //从分割线中获得多少个切换界面
 TabWidget tabw = mTabHost.getTabWidget();
 for (int i = 0; i < tabw.getChildCount(); i++) {
 View v = tabw.getChildAt(i);
 TextView tv = (TextView) v.findViewById(R.id.foot_tv); 
 ImageView iv = (ImageView) v.findViewById(R.id.foot_iv);
 //修改当前的界面按钮颜色图片
 if (i == mTabHost.getCurrentTab()) {
 tv.setTextColor(getresources().getColor(R.color.tab_light_color));
 iv.setImageresource(TabDb.getTabsImgLight()[i]);
 }else{
 tv.setTextColor(getresources().getColor(R.color.tab_color));
 iv.setImageresource(TabDb.getTabsImg()[i]);
 }
 }
 }
}

package com.gjn.mynavigation;

public class TabDb {
 /***
 * 获得底部所有项
 */
 public static String[] getTabsTxt() {
 String[] tabs = {"首页","交易","地点","我的"};
 return tabs;
 }
 /***
 * 获得所有碎片
 */
 public static Class[] getFramgent(){
 Class[] cls = {OneFm.class,TwoFm.class,ThreeFm.class,FourFm.class};
 return cls ;
 }
 /***
 * 获得所有点击前的图片
 */
 public static int[] getTabsImg(){
 int[] img = {R.drawable.home1,R.drawable.glod1,R.drawable.xc1,R.drawable.user1};
 return img ;
 }
 /***
 * 获得所有点击后的图片
 */
 public static int[] getTabsImgLight(){
 int[] img = {R.drawable.home2,R.drawable.glod2,R.drawable.xc2,R.drawable.user2};
 return img ;
 }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >

 <horizontalscrollview
 android:id="@+id/one_hv"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:scrollbars="none" >

 <RadioGroup
  android:id="@+id/one_rg"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="horizontal" >
 </RadioGroup>
 </horizontalscrollview>

 <view
 android:id="@+id/one_view"
 android:layout_width="match_parent"
 android:layout_height="0dp"
 android:layout_weight="1"
 class="android.support.v4.view.ViewPager" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RadioButton xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:BACkground="@drawable/tab_rb_SELEctor"
 android:button="@null"
 android:paddingBottom="10dp"
 android:paddingLeft="15dp"
 android:paddingRight="15dp"
 android:paddingTop="10dp"
 android:text="今日" >
</RadioButton>

<?xml version="1.0" encoding="utf-8"?>
<SELEctor xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android" >
 <!-- 点击 -->
 <item android:state_checked="true">
 <layer-list >
  <item >
  <shape android:shape="rectangle">
   <stroke android:width="5dp" android:color="@color/tab_light_color"/>
  </shape>
  </item>
  <item android:bottom="5dp">
  <shape android:shape="rectangle">
   <solid android:color="#fff"/>
  </shape>
  </item>
 </layer-list>
 </item>
 <!-- 默认 -->
 <item >
 <shape >
  <solid android:color="#fafafa"/>
 </shape>
 </item>
</SELEctor>

package com.gjn.mynavigation;

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

import android.os.bundle;
import android.support.Annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.onPagechangelistener;
import android.util.Displaymetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.horizontalscrollview;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.LayoutParams;
import android.widget.RadioGroup.oncheckedchangelistener;

public class OneFm extends Fragment implements OnPagechangelistener {

 private View view;
 private RadioGroup rg_;
 private ViewPager vp_;
 private horizontalscrollview hv_;
 private List<Fragment> newsList = new ArrayList<Fragment>();
 private OneFmAdapter adapter;

 @Override
 public View onCreateView(LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceStatE) {
 if (view == null) {
 //初始化view
 view = inflater.inflate(R.layout.fm_one,container,falsE);
 rg_ = (RadioGroup) view.findViewById(R.id.one_rg);
 vp_ = (ViewPager) view.findViewById(R.id.one_view);
 hv_ = (horizontalscrollview) view.findViewById(R.id.one_hv);
 //设置radioGroup点击事件
 rg_.setOncheckedchangelistener(new Oncheckedchangelistener() {
 
 @Override
 public void oncheckedChanged(RadioGroup group,int id) {
 vp_.setCurrentItem(id);
 }
 });
 //初始化顶部导航栏
 initTab(inflater);
 //初始化viewpager
 initView();
 }
 /*
 * 底部导航栏切换后 由于没有销毁顶部设置导致如果没有重新设置view
 * 导致底部切换后切回顶部页面数据会消失等bug
 * 以下设置每次重新创建view即可
 */
 ViewGroup parent = (ViewGroup) view.getParent();
 if (parent != null) {
 parent.removeView(view);
 }
 return view;
 }
 /***
 * 初始化viewpager
 */
 private void initView() {
 List<HTab> hTabs = HTabDb.getSELEcted();
 for (int i = 0; i < hTabs.size(); i++) {
 OneFm1 fm1 = new OneFm1();
 Bundle bundle = new Bundle();
 bundle.putString("name",hTabs.get(i).getName());
 fm1.setArguments(bundlE);
 newsList.add(fm1);
 }
 //设置viewpager适配器
 adapter = new OneFmAdapter(getActivity().getSupportFragmentManager(),newsList);
 vp_.setAdapter(adapter);
 //两个viewpager切换不重新加载
 vp_.setOffscreenPageLimit(2);
 //设置默认
 vp_.setCurrentItem(0);
 //设置viewpager监听事件
 vp_.setOnPagechangelistener(this);
 }
 /***
 * 初始化头部导航栏
 * @param inflater
 */
 private void initTab(LayoutInflater inflater) {
 List<HTab> hTabs = HTabDb.getSELEcted();
 for (int i = 0; i < hTabs.size(); i++) {
 //设置头部项布局初始化数据
 RadioButton rbButton = (RadioButton) inflater.inflate(R.layout.tab_rb,null);
 rbButton.setId(i);
 rbButton.setText(hTabs.get(i).getName());
 LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
 //加入RadioGroup
 rg_.addView(rbButton,params);
 }
 //默认点击
 rg_.check(0);
 }
 @Override
 public void onPageScrollStateChanged(int arg0) {
 
 }
 @Override
 public void onPageScrolled(int arg0,float arg1,int arg2) {
 
 }
 @Override
 public void onPageSELEcted(int id) {
 setTab(id);
 }
 /***
 * 页面跳转切换头部偏移设置
 * @param id
 */
 private void setTab(int id) {
 RadioButton rbButton = (RadioButton) rg_.getChildAt(id);
 //设置标题被点击
 rbButton.setchecked(true);
 //偏移设置
 int left = rbButton.getLeft();
 int width = rbButton.getMeasuredWidth();
 Displaymetrics metrics = new Displaymetrics();
 getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics);
 int screenWidth = metrics.widthPixels;
 //移动距离= 左边的位置 + button宽度的一半 - 屏幕宽度的一半
 int len = left + width / 2 - screenWidth / 2;
 //移动
 hv_.smoothScrollTo(len,0);
 }
}

package com.gjn.mynavigation;

/***
 * 头部Tab属性
 *
 */
public class HTab {
 private String name;

 public HTab(String Name) {
 super();
 this.setName(Name);
 }

 public String getName() {
 return name;
 }

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

package com.gjn.mynavigation;

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

public class HTabDb {
 private static final List<HTab> SELEcted = new ArrayList<HTab>();
 static{
 SELEcted.add(new HTab("今日"));
 SELEcted.add(new HTab("头条"));
 SELEcted.add(new HTab("娱乐"));
 SELEcted.add(new HTab("财经"));
 SELEcted.add(new HTab("军事"));
 SELEcted.add(new HTab("科技"));
 SELEcted.add(new HTab("时尚"));
 SELEcted.add(new HTab("体育"));
 }
 /***
 * 获得头部tab的所有项
 */
 public static List<HTab> getSELEcted() {
 return SELEcted;
 }

}

 package com.gjn.mynavigation;

import android.os.bundle;
import android.support.Annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class OneFm1 extends Fragment {

 private String name;

 @Override
 public void setArguments(Bundle args) {
 name = args.getString("name");
 }

 @Override
 public View onCreateView(LayoutInflater inflater,@Nullable Bundle savedInstanceStatE) {
 View view = inflater.inflate(R.layout.fragment,falsE);
 ((TextView) view.findViewById(R.id.fm_text)).setText(Name);
 return view;
 }

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_280_11845@as.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:gravity="center"
 android:orientation="vertical" >

 <TextView
 android:id="@+id/fm_text"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="Large Text"
 android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>