Android仿微信菜单

参考：https://m.jb51.net/show/127557

strings.xml

<resources>
    <string name="app_name">taiyang</string>
    <string name="hello_world">Hello world!</string>
    <string name="bottom_menu_me">我</string>
    <string name="bottom_menu_discovery">发现</string>
    <string name="bottom_menu_addressbook">通讯录</string>
    <string name="bottom_menu_wechat">微信</string>
</resources>

styles.xml

<style name="ButtomMenuImgv">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginBottom">5dp</item>
        <item name="android:layout_marginTop">5dp</item>
    </style>

    <style name="ButtomMenuTv">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginBottom">5dp</item>
        <item name="android:textSize">12sp</item>
        <item name="android:textColor">@drawable/ic_menu_textcolors_selector</item>
    </style>

    <style name="ButtomMenuItemLayout">
        <item name="android:layout_width">0dp</item>
        <item name="android:layout_height">match_parent</item>
        <item name="android:layout_weight">1</item>
        <item name="android:gravity">center</item>
        <item name="android:orientation">vertical</item>
    </style>

在drawable下面添加四个xml

ic_menu_chat_selector.xml

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

    <item android:drawable="@mipmap/shouye_light"
        android:state_selected="true"></item>
    <item android:drawable="@mipmap/shouye_normal"></item>

</selector>

ic_menu_addressbook_selector.xml

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

    <item android:drawable="@mipmap/two_light"
        android:state_selected="true"></item>
    <item android:drawable="@mipmap/two_normal"></item>

</selector>

ic_menu_discovery_selector.xml

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

    <item android:drawable="@mipmap/lishishuju_light" 
        android:state_selected="true"></item>
    <item android:drawable="@mipmap/lishishuju_normal"></item>

</selector>

ic_menu_me_selector.xml

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

    <item android:drawable="@mipmap/youxi_light" 
        android:state_selected="true"></item>
    <item android:drawable="@mipmap/youxi_normal"></item>

</selector>

@mipmap/youxi_light 是选中状态的图片

@mipmap/youxi_normal 是未选中状态的图片

在src文件夹下新建一个包用来存放fragment相关的文件

ChatFragment.java

public class ChatFragment extends Fragment { 
  @Override 
  public View onCreateView(LayoutInflater inflater, 
      @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
    View view = View.inflate(getContext(), R.layout.fragment_chat, null); 
    return view; 
  } 
} 

AddressBookFragment.java
DiscoveryFragment.java 
MeFragment.java 
类似

建一个FragmentPagerAdapter适配器

public class FragmentAdapter extends FragmentPagerAdapter { 
  private ArrayList<Fragment> mFragments; 
  public FragmentAdapter(FragmentManager fm,ArrayList<Fragment> fragment) { 
    super(fm); 
    this.mFragments = fragment; 
  } 
  @Override 
  public int getCount() { 
    return mFragments.size(); 
  } 
   
  @Override 
  public Fragment getItem(int arg0) { 
    return mFragments.get(arg0); 
  } 
 
} 

MainActivity.java

public class MainActivity extends FragmentActivity implements OnClickListener, 
    OnPageChangeListener { 
  private ArrayList<TextView> tv_menus; 
  private ArrayList<ImageView> imgv_menus; 
  private ViewPager mViewPager; 
 
  private ArrayList<Fragment> mFragments; 
  private FragmentAdapter mMainMenuAdapter; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
 
    initView(); 
    initData(); 
    initEvent(); 
  } 
 
  // 初始化控件 
  private void initView() { 
    tv_menus = new ArrayList<TextView>(); 
    tv_menus.add((TextView) findViewById(R.id.tv_bottomMenu_chat)); 
    tv_menus 
        .add((TextView) findViewById(R.id.tv_bottomMenu_addressbook)); 
    tv_menus.add((TextView) findViewById(R.id.tv_bottomMenu_discovery)); 
    tv_menus.add((TextView) findViewById(R.id.tv_bottomMenu_me)); 
    imgv_menus = new ArrayList<ImageView>(); 
    imgv_menus.add((ImageView) findViewById(R.id.imgv_bottomMenu_chat)); 
    imgv_menus 
        .add((ImageView) findViewById(R.id.imgv_bottomMenu_addressbook)); 
    imgv_menus 
        .add((ImageView) findViewById(R.id.imgv_bottomMenu_discovery)); 
    imgv_menus.add((ImageView) findViewById(R.id.imgv_bottomMenu_me)); 
    mViewPager = (ViewPager) findViewById(R.id.vp_main_menuContent); 
  } 
 
  // 初始化数据 
  private void initData() { 
    mFragments = new ArrayList<Fragment>(); 
    mFragments.add(new ChatFragment()); 
    mFragments.add(new AddressBookFragment()); 
    mFragments.add(new DiscoveryFragment()); 
    mFragments.add(new MeFragment()); 
    mMainMenuAdapter = new FragmentAdapter(getSupportFragmentManager(), 
        mFragments); 
    setMenuSelector(0); // 默认选中第一个菜单项“微信” 
  } 
 
  // 初始化事件 
  private void initEvent() { 
    mViewPager.setAdapter(mMainMenuAdapter); 
    mViewPager.setOnPageChangeListener(this); 
    findViewById(R.id.ll_bottomMenu_chat).setOnClickListener(this); 
    findViewById(R.id.ll_bottomMenu_addressBook).setOnClickListener(this); 
    findViewById(R.id.ll_bottomMenu_discovery).setOnClickListener(this); 
    findViewById(R.id.ll_bottomMenu_me).setOnClickListener(this); 
  } 
 
  @Override 
  public void onClick(View v) { 
    switch (v.getId()) { 
    case R.id.ll_bottomMenu_chat: 
      setMenuSelector(0); 
      break; 
    case R.id.ll_bottomMenu_addressBook: 
      setMenuSelector(1); 
      break; 
    case R.id.ll_bottomMenu_discovery: 
      setMenuSelector(2); 
      break; 
    case R.id.ll_bottomMenu_me: 
      setMenuSelector(3); 
      break; 
 
    } 
  } 
 
  /** 
   * 选中指定的菜单项并显示对应的Fragment 
   * 
   * @param index 
   */ 
  private void setMenuSelector(int index) { 
    reSetSelected(); 
    tv_menus.get(index).setSelected(true); 
    imgv_menus.get(index).setSelected(true); 
    mViewPager.setCurrentItem(index); 
  } 
 
  /** 
   * 重置底部菜单所有ImageView和TextView为未选中状态 
   */ 
  private void reSetSelected() { 
    for (int i = 0; i < tv_menus.size(); i++) { 
      tv_menus.get(i).setSelected(false); 
      imgv_menus.get(i).setSelected(false); 
    } 
  } 
 
  @Override 
  public void onPageScrollStateChanged(int arg0) { 
 
  } 
 
  @Override 
  public void onPageScrolled(int arg0, float arg1, int arg2) { 
 
  } 
 
  @Override 
  public void onPageSelected(int arg0) { 
    setMenuSelector(arg0); 
  } 
} 

底部图片文字资源采用选择器去实现，当选中某个菜单项时，重置所有菜单项为未选中状态，接着选中指定的菜单项并让ViewPager显示该菜单项对应的Fragment即可。