tabnavigate

Android底部导航栏封装 一、概述 现在Android底部导航的设计风格已经十分普及，实现起来都比较繁琐。本着程序猿能偷懒就偷懒的原则，所以笔者封装了下View。

目前比较流行的解决方案大致有一下几种：

1、viewpager + tabhost + fragment

2、viewpager + RadioButton + fragment

这些实现起来都比较繁琐。

二、预期效果 用比较少的代码达到底部导航的效果，

三、实现过程 详细参考 http://blog.csdn.net/linuxiao/article/details/39934987 四、用法 4.1 定义item的选择器item0�，item1，item2，item3 最主要要定义好state_selected

代码如下 [html] view plaincopy

<item android:drawable="@drawable/tab_address_pressed" android:state_pressed="true"/>  
<item android:drawable="@drawable/tab_address_pressed" android:state_selected="true"></item>  
<item android:drawable="@drawable/tab_address_pressed" android:state_focused="true" android:state_pressed="false"></item>  
<item android:drawable="@drawable/tab_address_normal" android:state_focused="false" android:state_pressed="false"/>  
<item android:drawable="@drawable/tab_address_normal" android:state_focused="false"/>  

4.2 activity_main.xml 代码如下： [html] view plaincopy

<com.linuxiao.lib.tabnavigate.TabNavigateLayout  
    android:id="@+id/tabNavigateLayout1"  
    android:layout_width="match_parent"  
    android:layout_height="wrap_content"  
    android:layout_alignParentBottom="true"  
    android:background="@drawable/bottom_bar" >  

    <com.linuxiao.lib.tabnavigate.TabNavigateItem  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        app:src="@drawable/item_0"  
        app:text="首页" >  
    </com.linuxiao.lib.tabnavigate.TabNavigateItem>  

    <com.linuxiao.lib.tabnavigate.TabNavigateItem  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        app:src="@drawable/item_1"  
        app:text="消息" >  
    </com.linuxiao.lib.tabnavigate.TabNavigateItem>  

    <com.linuxiao.lib.tabnavigate.TabNavigateItem  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        app:src="@drawable/item_2"  
        app:text="更多" >  
    </com.linuxiao.lib.tabnavigate.TabNavigateItem>  

    <com.linuxiao.lib.tabnavigate.TabNavigateItem  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        app:src="@drawable/item_3"  
        app:text="设置" >  
    </com.linuxiao.lib.tabnavigate.TabNavigateItem>  
</com.linuxiao.lib.tabnavigate.TabNavigateLayout>  

<FrameLayout  
    android:id="@+id/container"  
    android:layout_width="wrap_content"  
    android:layout_height="wrap_content"  
    android:layout_above="@+id/tabNavigateLayout1"  
    android:layout_alignLeft="@+id/tabNavigateLayout1"  
    android:layout_alignParentTop="true"  
    android:layout_alignRight="@+id/tabNavigateLayout1"   
    android:background="#cdcdcd">  

</FrameLayout>  

4.3 MainActivity 比较简单代码如下：

public class MainActivity extends FragmentActivity implements OnItemSelectedListener {

@Override  
protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.activity_main);  
    TabNavigateLayout navigateLayout = (TabNavigateLayout)findViewById(R.id.tabNavigateLayout1);  
    navigateLayout.setOnItemSelectedListener(this);  
    getSupportFragmentManager().beginTransaction().add(R.id.container, new ItemFragment(0)).commit();  
}  

@Override  
public void OnItemSelected(View v, int position) {  
    getSupportFragmentManager().beginTransaction().replace(R.id.container, new ItemFragment(position)).commit();  
}  

}

4.4 ItemFragment

/**

• @author linuxiao
• Email: linuxiao@gmail.com
• @date 2014年10月9日 下午5:39:18

*/
public class ItemFragment extends Fragment {

private int position;  

public ItemFragment(int position) {  
    this.position = position;  
}  
/* (non-Javadoc) 
 * @see android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle) 
 */  
@Override  
public View onCreateView(LayoutInflater inflater, ViewGroup container,  
        Bundle savedInstanceState) {  
    TextView tv = new TextView(getActivity());  
    tv.setText("这是第" + position + "个Fragment");  
    return tv;  
}  

}

转载请注明出处http://blog.csdn.net/linuxiao/article/details/39934987