首页底部菜单FragmentTabHost的使用

一般现在的菜单都是底部FragmentTabHost，切换Fragment来实现的，今天我们就使用这个来看看如何实现的

首先是布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <FrameLayout
            android:id="@+id/realtabcontent"
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1"
            android:background="@color/white" />


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:orientation="vertical">

            <View
                android:layout_width="match_parent"
                android:layout_height="1px"
                android:background="@color/color_home_tab_line" />

            <android.support.v4.app.FragmentTabHost
                android:id="@android:id/tabhost"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="@color/et_divider_disable">

                <FrameLayout
                    android:id="@android:id/tabcontent"
                    android:layout_width="0dp"
                    android:layout_height="0dp"
                    android:layout_weight="0" />
            </android.support.v4.app.FragmentTabHost>
        </LinearLayout>
    </LinearLayout>
  
</RelativeLayout>

再来看看主界面代码如何实现，我的每个步骤都有注释哦！

1.初始化参数

  @ViewInject(R.id.rl_center)
    private RelativeLayout rl_center;
    @ViewInject(android.R.id.tabhost)
    private FragmentTabHost mTabHost;
//底部菜单的图标
    private int mImageViewArray[] = {R.drawable.home_tab1, R.drawable.home_tab2, R.drawable.home_centertab, R.drawable.home_tab3, R.drawable.home_tab4};
//底部菜单的标题
    private String mTextviewArray[] = {"工作", "消息","签到","联系人","我的"};
//底部菜单对应的fragment
    private Class fragmentArray[] = {Fragment1.class, Fragment2.class, Fragment3.class, Fragment3.class, Fragment4.class};

    private LayoutInflater layoutInflater;

2.初始化底部工具栏

/**
     * 初始化底部工具栏
     */
    private void initTabHost() {
        mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
        int count = fragmentArray.length;
        for (int i = 0; i < count; i++) {
            TabHost.TabSpec tabSpec = mTabHost.newTabSpec(mTextviewArray[i])
                    .setIndicator(getTabItemView(i));//getTabItemView的方法
            mTabHost.addTab(tabSpec, fragmentArray[i], null);
            mTabHost.getTabWidget().getChildAt(i)
                    .setBackgroundResource(R.drawable.bg_tbitem);
        }
        mTabHost.setCurrentTabByTag(mTextviewArray[0]);//设置当前菜单tab
        mTabHost.getTabWidget().setDividerDrawable(null);

        mTabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {
            @Override
            public void onTabChanged(String s) {
              

            }
        });
    }

3.项的样式

  /**
     * 项的样式
     *
     * @param index 第几个
     * @return 每一个Tab样式
     */
    private View getTabItemView(int index) {
        View view = layoutInflater.inflate(R.layout.tab_home_item, null);
        ImageView imageView = (ImageView) view.findViewById(R.id.icon);
        imageView.setImageResource(mImageViewArray[index]);
        TextView textView = (TextView) view.findViewById(R.id.name);
        textView.setText(mTextviewArray[index]);
        return view;
    }