Fragment、FragmentTabHost以及RadioGroup框架

package com.dotfive.chuanbang.activity;

import test.Fragment1;
import test.Fragment1.OnBackListener;
import test.Fragment2;
import test.Fragment3;
import test.Fragment4;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TabHost.TabSpec;
import android.widget.TextView;
import android.widget.Toast;

import com.dotfive.chuanbang.R;
//定义FragmentTabHost对象
//定义一个布局
//定义数组来存放Fragment界面
//定义数组来存放按钮图片
//Tab选项卡的文字
import com.dotfive.chuanbang.layout.SaveFragmentTabHost;

/**
     * 在这里获取到每个需要用到的控件的实例，并给它们设置好必要的点击事件。
     */
//实例化布局对象
//实例化TabHost对象，得到TabHost
//得到fragment的个数
//为每一个Tab按钮设置图标、文字和内容
//将Tab按钮添加进Tab选项卡中
//设置Tab按钮的背景
/**
     * 给Tab按钮设置图标和文字
     */
public class FragmentTabsActivity extends FragmentActivity {

    //定义FragmentTabHost对象
    private SaveFragmentTabHost mTabHost;

    //定义一个布局
    private LayoutInflater layoutInflater;

//    private RadioGroup mTabRg;

    //定义数组来存放Fragment界面
    private final Class[] fragmentArray = { Fragment1.class, Fragment2.class, Fragment3.class, Fragment4.class };

    //定义数组来存放按钮图片
    private int mImageViewArray[] = { R.drawable.selector_tab, R.drawable.selector_tab, R.drawable.selector_tab, R.drawable.selector_tab,
            R.drawable.selector_tab };

    //Tab选项卡的文字
    private String mTextviewArray[] = { "首页", "消息", "好友", "广场", "更多" };

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

    /**
     * 在这里获取到每个需要用到的控件的实例，并给它们设置好必要的点击事件。
     */
    private void initViews() {
        //实例化布局对象
        layoutInflater = LayoutInflater.from(this);

        //实例化TabHost对象，得到TabHost
        mTabHost = (SaveFragmentTabHost) findViewById(android.R.id.tabhost);
        mTabHost.setOnTabChangedListener(new OnTabChangeListener() {

            @Override
            public void onTabChanged(String arg0) {
                Log.e("X", "++++++++++++++" + arg0);
            }
        });
        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
        // 得到fragment的个数
        int count = fragmentArray.length;
        for (int i = 0; i < count; i++) {
            // 为每一个Tab按钮设置图标、文字和内容
//            TabSpec tabSpec = mTabHost.newTabSpec(i + "").setIndicator(i + "");
//            TabSpec tabSpec = mTabHost.newTabSpec(mTextviewArray[i]).setIndicator(i + "");
                        TabSpec tabSpec = mTabHost.newTabSpec(mTextviewArray[i]).setIndicator(getTabItemView(i));
            //将Tab按钮添加进Tab选项卡中
            mTabHost.addTab(tabSpec, fragmentArray[i], null);
            //设置Tab按钮的背景
                        mTabHost.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.selector_tab);
        }

//        mTabRg = (RadioGroup) findViewById(R.id.tab_rg_menu);
//        mTabRg.setOnCheckedChangeListener(new OnCheckedChangeListener() {
//            @Override
//            public void onCheckedChanged(RadioGroup group, int checkedId) {
//                switch (checkedId) {
//                case R.id.tab_rb_1:
//                    mTabHost.setCurrentTab(0);
//                    break;
//                case R.id.tab_rb_2:
//                    mTabHost.setCurrentTab(1);
//                    break;
//                case R.id.tab_rb_3:
//                    mTabHost.setCurrentTab(2);
//                    break;
//                case R.id.tab_rb_4:
//                    mTabHost.setCurrentTab(3);
//                    break;
//                default:
//                    break;
//                }
//            }
//        });
//        mTabHost.setCurrentTab(0);
    }
/**
         * 给Tab按钮设置图标和文字
         */
        private View getTabItemView(int index) {
    
            View view = layoutInflater.inflate(R.layout.tab_item_view, null);
    
            ImageView imageView = (ImageView) view.findViewById(R.id.imageview);
            imageView.setImageResource(mImageViewArray[index]);
    
            TextView textView = (TextView) view.findViewById(R.id.textview);
            textView.setText(mTextviewArray[index]);
    
            return view;
        }

}

保存Fragment状态的TabHost

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dotfive.chuanbang.layout;

import java.util.ArrayList;

import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TabHost;
import android.widget.TabWidget;

/**
 * Special TabHost that allows the use of {@link Fragment} objects for its tab
 * content. When placing this in a view hierarchy, after inflating the hierarchy
 * you must call {@link #setup(Context, FragmentManager, int)} to complete the
 * initialization of the tab host.
 * 
 * <p>
 * Here is a simple example of using a FragmentTabHost in an Activity:
 * 
 * {@sample
 * development/samples/Support4Demos/src/com/example/android/supportv4/app/
 * FragmentTabs.java complete}
 * 
 * <p>
 * This can also be used inside of a fragment through fragment nesting:
 * 
 * {@sample
 * development/samples/Support4Demos/src/com/example/android/supportv4/app/
 * FragmentTabsFragmentSupport.java complete}
 */
public class SaveFragmentTabHost extends TabHost implements TabHost.OnTabChangeListener {
    private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
    private FrameLayout mRealTabContent;
    private Context mContext;
    private FragmentManager mFragmentManager;
    private int mContainerId;
    private TabHost.OnTabChangeListener mOnTabChangeListener;
    private TabInfo mLastTab;
    private boolean mAttached;

    static final class TabInfo {
        private final String tag;
        private final Class<?> clss;
        private final Bundle args;
        private Fragment fragment;

        TabInfo(String _tag, Class<?> _class, Bundle _args) {
            tag = _tag;
            clss = _class;
            args = _args;
        }
    }

    static class DummyTabFactory implements TabHost.TabContentFactory {
        private final Context mContext;

        public DummyTabFactory(Context context) {
            mContext = context;
        }

        @Override
        public View createTabContent(String tag) {
            View v = new View(mContext);
            v.setMinimumWidth(0);
            v.setMinimumHeight(0);
            return v;
        }
    }

    static class SavedState extends BaseSavedState {
        String curTab;

        SavedState(Parcelable superState) {
            super(superState);
        }

        private SavedState(Parcel in) {
            super(in);
            curTab = in.readString();
        }

        @Override
        public void writeToParcel(Parcel out, int flags) {
            super.writeToParcel(out, flags);
            out.writeString(curTab);
        }

        @Override
        public String toString() {
            return "FragmentTabHost.SavedState{" + Integer.toHexString(System.identityHashCode(this)) + " curTab=" + curTab + "}";
        }

        public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
            public SavedState createFromParcel(Parcel in) {
                return new SavedState(in);
            }

            public SavedState[] newArray(int size) {
                return new SavedState[size];
            }
        };
    }

    public SaveFragmentTabHost(Context context) {
        // Note that we call through to the version that takes an AttributeSet,
        // because the simple Context construct can result in a broken object!
        super(context, null);
        initFragmentTabHost(context, null);
    }

    public SaveFragmentTabHost(Context context, AttributeSet attrs) {
        super(context, attrs);
        initFragmentTabHost(context, attrs);
    }

    private void initFragmentTabHost(Context context, AttributeSet attrs) {
        TypedArray a = context.obtainStyledAttributes(attrs, new int[] { android.R.attr.inflatedId }, 0, 0);
        mContainerId = a.getResourceId(0, 0);
        a.recycle();

        super.setOnTabChangedListener(this);
    }

    private void ensureHierarchy(Context context) {
        // If owner hasn't made its own view hierarchy, then as a convenience
        // we will construct a standard one here.
        if (findViewById(android.R.id.tabs) == null) {
            LinearLayout ll = new LinearLayout(context);
            ll.setOrientation(LinearLayout.VERTICAL);
            addView(ll, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

            TabWidget tw = new TabWidget(context);
            tw.setId(android.R.id.tabs);
            tw.setOrientation(TabWidget.HORIZONTAL);
            ll.addView(tw, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, 0));

            FrameLayout fl = new FrameLayout(context);
            fl.setId(android.R.id.tabcontent);
            ll.addView(fl, new LinearLayout.LayoutParams(0, 0, 0));

            mRealTabContent = fl = new FrameLayout(context);
            mRealTabContent.setId(mContainerId);
            ll.addView(fl, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 0, 1));
        }
    }

    /**
     * @deprecated Don't call the original TabHost setup, you must instead call
     *             {@link #setup(Context, FragmentManager)} or
     *             {@link #setup(Context, FragmentManager, int)}.
     */
    @Override
    @Deprecated
    public void setup() {
        throw new IllegalStateException("Must call setup() that takes a Context and FragmentManager");
    }

    public void setup(Context context, FragmentManager manager) {
        ensureHierarchy(context); // Ensure views required by super.setup()
        super.setup();
        mContext = context;
        mFragmentManager = manager;
        ensureContent();
    }

    public void setup(Context context, FragmentManager manager, int containerId) {
        ensureHierarchy(context); // Ensure views required by super.setup()
        super.setup();
        mContext = context;
        mFragmentManager = manager;
        mContainerId = containerId;
        ensureContent();
        mRealTabContent.setId(containerId);

        // We must have an ID to be able to save/restore our state. If
        // the owner hasn't set one at this point, we will set it ourself.
        if (getId() == View.NO_ID) {
            setId(android.R.id.tabhost);
        }
    }

    private void ensureContent() {
        if (mRealTabContent == null) {
            mRealTabContent = (FrameLayout) findViewById(mContainerId);
            if (mRealTabContent == null) {
                throw new IllegalStateException("No tab content FrameLayout found for id " + mContainerId);
            }
        }
    }

    @Override
    public void setOnTabChangedListener(OnTabChangeListener l) {
        mOnTabChangeListener = l;
    }

    public void addTab(TabHost.TabSpec tabSpec, Class<?> clss, Bundle args) {
        tabSpec.setContent(new DummyTabFactory(mContext));
        String tag = tabSpec.getTag();

        TabInfo info = new TabInfo(tag, clss, args);

        if (mAttached) {
            // If we are already attached to the window, then check to make
            // sure this tab's fragment is inactive if it exists. This shouldn't
            // normally happen.
            info.fragment = mFragmentManager.findFragmentByTag(tag);
            if (info.fragment != null && !info.fragment.isDetached()) {
                FragmentTransaction ft = mFragmentManager.beginTransaction();
                //                ft.detach(info.fragment);
                ft.hide(info.fragment);
                ft.commit();
            }
        }

        mTabs.add(info);
        addTab(tabSpec);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();

        String currentTab = getCurrentTabTag();

        // Go through all tabs and make sure their fragments match
        // the correct state.
        FragmentTransaction ft = null;
        for (int i = 0; i < mTabs.size(); i++) {
            TabInfo tab = mTabs.get(i);
            tab.fragment = mFragmentManager.findFragmentByTag(tab.tag);
            //            if (tab.fragment != null && !tab.fragment.isDetached()) {
            if (tab.fragment != null) {
                if (tab.tag.equals(currentTab)) {
                    // The fragment for this tab is already there and
                    // active, and it is what we really want to have
                    // as the current tab. Nothing to do.
                    mLastTab = tab;
                } else {
                    // This fragment was restored in the active state,
                    // but is not the current tab. Deactivate it.
                    if (ft == null) {
                        ft = mFragmentManager.beginTransaction();
                    }
                    //                    ft.detach(tab.fragment);
                    ft.hide(tab.fragment);
                }
            }
        }

        // We are now ready to go. Make sure we are switched to the
        // correct tab.
        mAttached = true;
        ft = doTabChanged(currentTab, ft);
        if (ft != null) {
            ft.commit();
            mFragmentManager.executePendingTransactions();
        }
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        mAttached = false;
    }

    @Override
    protected Parcelable onSaveInstanceState() {
        Parcelable superState = super.onSaveInstanceState();
        SavedState ss = new SavedState(superState);
        ss.curTab = getCurrentTabTag();
        return ss;
    }

    @Override
    protected void onRestoreInstanceState(Parcelable state) {
        SavedState ss = (SavedState) state;
        super.onRestoreInstanceState(ss.getSuperState());
        setCurrentTabByTag(ss.curTab);
    }

    @Override
    public void onTabChanged(String tabId) {
        if (mAttached) {
            FragmentTransaction ft = doTabChanged(tabId, null);
            if (ft != null) {
                ft.commit();
            }
        }
        if (mOnTabChangeListener != null) {
            mOnTabChangeListener.onTabChanged(tabId);
        }
    }

    private FragmentTransaction doTabChanged(String tabId, FragmentTransaction ft) {
        TabInfo newTab = null;
        for (int i = 0; i < mTabs.size(); i++) {
            TabInfo tab = mTabs.get(i);
            if (tab.tag.equals(tabId)) {
                newTab = tab;
            }
        }
        if (newTab == null) {
            throw new IllegalStateException("No tab known for tag " + tabId);
        }
        if (mLastTab != newTab) {
            if (ft == null) {
                ft = mFragmentManager.beginTransaction();
            }
            if (mLastTab != null) {
                if (mLastTab.fragment != null) {
                    //                    ft.detach(mLastTab.fragment);
                    ft.hide(mLastTab.fragment);
                }
            }
            if (newTab != null) {
                if (newTab.fragment == null) {
                    newTab.fragment = Fragment.instantiate(mContext, newTab.clss.getName(), newTab.args);
                    ft.add(mContainerId, newTab.fragment, newTab.tag);
                } else {
                    //                    ft.attach(newTab.fragment);
                    ft.show(newTab.fragment);
                }
            }

            mLastTab = newTab;
        }
        return ft;
    }
}

用RadioGroup、LinearLayout、以及FragmentTabHost 创建button操作栏

<LinearLayout 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:orientation="vertical" >

    <FrameLayout
        android:id="@+id/realtabcontent"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

<!--     <RelativeLayout -->
<!--         android:layout_width="match_parent" -->
<!--         android:layout_height="wrap_content" -->
<!--         android:background="@color/black" > -->

<!--         <RadioGroup -->
<!--             android:id="@+id/tab_rg_menu" -->
<!--             android:layout_width="match_parent" -->
<!--             android:layout_height="wrap_content" -->
<!--             android:background="@drawable/selector_tab" -->
<!--             android:orientation="horizontal" > -->

<!--             <RadioButton -->
<!--                 android:id="@+id/tab_rb_1" -->
<!--                 style="@style/tab_rb_style" -->
<!--                 android:checked="true" -->
<!--                 android:drawableTop="@drawable/bt_search_close_pressed" -->
<!--                 android:text="微信" /> -->

<!--             <RadioButton -->
<!--                 android:id="@+id/tab_rb_2" -->
<!--                 style="@style/tab_rb_style" -->
<!--                 android:text="通讯录" /> -->

<!--             <RadioButton -->
<!--                 android:id="@+id/tab_rb_3" -->
<!--                 style="@style/tab_rb_style" -->
<!--                 android:text="发现" /> -->

<!--             <RadioButton -->
<!--                 android:id="@+id/tab_rb_4" -->
<!--                 style="@style/tab_rb_style" -->
<!--                 android:text="我" /> -->

<!--             <RadioButton -->
<!--                 android:id="@+id/tab_rb_5" -->
<!--                 style="@style/tab_rb_style" -->
<!--                 android:text="我" /> -->
<!--         </RadioGroup> -->

<!--         <LinearLayout -->
<!--             android:layout_width="match_parent" -->
<!--             android:layout_height="55dp" -->
<!--             android:baselineAligned="false" -->
<!--             android:orientation="horizontal" > -->

<!--             <LinearLayout -->
<!--                 android:id="@+id/home_layout" -->
<!--                 android:layout_width="0dp" -->
<!--                 android:layout_height="match_parent" -->
<!--                 android:layout_weight="1" -->
<!--                 android:gravity="center" -->
<!--                 android:orientation="vertical" > -->

<!--                 <TextView -->
<!--                     android:id="@+id/home_icon" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/fontHome" -->
<!--                     android:textColor="@color/gray" /> -->

<!--                 <TextView -->
<!--                     android:id="@+id/home_text" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/stringHome" -->
<!--                     android:textColor="@color/gray" -->
<!--                     android:textSize="15.0dp" /> -->
<!--             </LinearLayout> -->

<!--             <LinearLayout -->
<!--                 android:id="@+id/celebrity_layout" -->
<!--                 android:layout_width="0dp" -->
<!--                 android:layout_height="match_parent" -->
<!--                 android:layout_weight="1" -->
<!--                 android:gravity="center" -->
<!--                 android:orientation="vertical" > -->

<!--                 <TextView -->
<!--                     android:id="@+id/celebrity_icon" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/fontCelebrity" -->
<!--                     android:textColor="@color/gray" /> -->

<!--                 <TextView -->
<!--                     android:id="@+id/celebrity_text" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/stringCelebrity" -->
<!--                     android:textColor="@color/gray" /> -->
<!--             </LinearLayout> -->

<!--             <LinearLayout -->
<!--                 android:id="@+id/brand_layout" -->
<!--                 android:layout_width="0dp" -->
<!--                 android:layout_height="match_parent" -->
<!--                 android:layout_weight="1" -->
<!--                 android:gravity="center" -->
<!--                 android:orientation="vertical" > -->

<!--                 <TextView -->
<!--                     android:id="@+id/brand_icon" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/fontBrand" -->
<!--                     android:textColor="@color/gray" /> -->

<!--                 <TextView -->
<!--                     android:id="@+id/brand_text" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/stringBrand" -->
<!--                     android:textColor="@color/gray" -->
<!--                     android:textSize="15.0dp" /> -->
<!--             </LinearLayout> -->

<!--             <LinearLayout -->
<!--                 android:id="@+id/explore_layout" -->
<!--                 android:layout_width="0dp" -->
<!--                 android:layout_height="match_parent" -->
<!--                 android:layout_weight="1" -->
<!--                 android:gravity="center" -->
<!--                 android:orientation="vertical" > -->

<!--                 <TextView -->
<!--                     android:id="@+id/explore_icon" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/fontExplore" -->
<!--                     android:textColor="@color/gray" /> -->

<!--                 <TextView -->
<!--                     android:id="@+id/explore_text" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/stringExplore" -->
<!--                     android:textColor="@color/gray" -->
<!--                     android:textSize="15.0dp" /> -->
<!--             </LinearLayout> -->

<!--             <LinearLayout -->
<!--                 android:id="@+id/more_layout" -->
<!--                 android:layout_width="0dp" -->
<!--                 android:layout_height="match_parent" -->
<!--                 android:layout_weight="1" -->
<!--                 android:gravity="center" -->
<!--                 android:orientation="vertical" > -->

<!--                 <TextView -->
<!--                     android:id="@+id/more_icon" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/fontMore" -->
<!--                     android:textColor="@color/gray" /> -->

<!--                 <TextView -->
<!--                     android:id="@+id/more_text" -->
<!--                     android:layout_width="wrap_content" -->
<!--                     android:layout_height="wrap_content" -->
<!--                     android:text="@string/stringMore" -->
<!--                     android:textColor="@color/gray" -->
<!--                     android:textSize="15.0dp" /> -->
<!--             </LinearLayout> -->
<!--         </LinearLayout> -->
<!--     </RelativeLayout> -->

    <com.dotfive.chuanbang.layout.SaveFragmentTabHost
        android:id="@android:id/tabhost"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_weight="0" />
    </com.dotfive.chuanbang.layout.SaveFragmentTabHost>

</LinearLayout>

    <!-- tabBar -->
    <style name="tab_rb_style">
        <item name="android:layout_width">0dp</item>
        <item name="android:layout_height">55dp</item>
        <item name="android:layout_weight">1</item>
        <item name="android:button">@null</item>
        <item name="android:textColor">@drawable/font_color_gray</item>
        <item name="android:textSize">15.0dp</item>
        <item name="android:gravity">center_horizontal|bottom</item>
        <item name="android:layout_gravity">bottom</item>
        <item name="android:background">@drawable/selector_tab</item>
    </style>

如果不需要背景色，就别加foucs

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
 　　

<!-- <item android:drawable="@drawable/home_btn_bg" android:state_pressed="true"/> -->

    <item android:drawable="@drawable/home_btn_bg" android:state_selected="true"/>

</selector>

 itemView

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

    <ImageView
        android:id="@+id/imageview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:focusable="false"
        android:padding="3dp" 
        android:src="@drawable/selector_tab">
    </ImageView>

    <TextView
        android:id="@+id/textview"       
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:text="首页"
        android:textSize="10sp"
        android:textColor="#ffffff">
    </TextView>

</LinearLayout>