FragmentTabHost的使用方法总结

在开发商城上中时为了实现底部导航栏使用了fragmentTabHost方法，总结如下：

1、Activity必须继承fragmentActivity方法。

2.必须调用setup()方法

3.添加TabSpec

具体代码如下:

主要布局：

activity_main:

<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"    tools:context=".MainActivity"    android:orientation="vertical">

<FrameLayout        android:id="@+id/realtabcontent"        android:layout_width="fill_parent"        android:layout_height="0dip"        android:layout_weight="1"        android:background="@color/colorAccent"        />

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

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

主要代码逻辑:

public class MainActivity extends AppCompatActivity {    private FragmentTabHost mTabHost;    private LayoutInflater mInflater;    private List<Tab> mTabs = new ArrayList<>(5);

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

}

private void initTab() {        Tab tab_home = new Tab(HomeFragment.class,R.string.home,R.mipmap.icon_home);        Tab tab_hot = new Tab(HotFragment.class,R.string.hot,R.mipmap.icon_hot);        Tab tab_category = new Tab(CategoryFragment.class,R.string.catagory,R.mipmap.icon_discover);        Tab tab_cart = new Tab(CartFragment.class,R.string.cart,R.mipmap.icon_cart);        Tab tab_mine= new Tab(MineFragment.class,R.string.mine,R.mipmap.icon_user);

mTabs.add(tab_home);        mTabs.add(tab_hot);        mTabs.add(tab_category);        mTabs.add(tab_cart);        mTabs.add(tab_mine);

mInflater = LayoutInflater.from(this);        mTabHost  = (FragmentTabHost) findViewById(android.R.id.tabhost);        mTabHost.setup(this,getSupportFragmentManager(),R.id.realtabcontent);

for(Tab tab : mTabs){            TabHost.TabSpec tabSpec = mTabHost.newTabSpec(getString(tab.getTitle()));            tabSpec.setIndicator( buildindictor(tab));            mTabHost.addTab(tabSpec,tab.getFragment(),null);

}

}    private View buildindictor(Tab tab){        View view = mInflater.inflate(R.layout.tab_indication,null);        ImageView img = (ImageView) findViewById(R.id.icon_tab);        TextView txt = (TextView) findViewById(R.id.txt_indicator);

img.setBackgroundResource(tab.getIcon());        txt.setText(tab.getTitle());        return view;

}} 

在新建CartFragment:\CategoryFragment;\.HomeFragment;\.HotFragment;\.MineFragmen类，都必须继承v4包下的Fragment
public class HotFragment extends Fragment {    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        return  inflater.inflate(R.layout.fragment_hot,container,false);    }}