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Android底部菜單欄（RadioGroup+Fragment）美化

更新時間：2020年07月20日 17:19:47 作者：baiyubg

這篇文章主要介紹了Android底部菜單欄RadioGroup+Fragment美化，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價值，感興趣的小伙伴們可以參考一下

眾所周知，android的底部菜單欄太重要，平時項(xiàng)目一般都是需要用到的，但是網(wǎng)上關(guān)于這方面的demo做得太丑了，實(shí)在慘不忍睹，所以這里便用RadioGroup+Fragment的方式寫了一個，順便美化了一下，需要的可以看下。

效果圖：

項(xiàng)目結(jié)構(gòu)

MainActivity.java

public class MainActivity extends AppCompatActivity {
 
 private FrameLayout frameLayout;
 private RadioGroup radioGroup;
 private Fragment[] mFragments;
 private int mIndex;
 
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  initFragment();
  setRadioGroupListener();
 
 
 }
 
 private void initFragment() {
  radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
  frameLayout = (FrameLayout) findViewById(R.id.fl_content);
  HomeFragment homeFragment = new HomeFragment();
  ShopFragment shopFragment = new ShopFragment();
  LiveFragment liveFragment = new LiveFragment();
  ShoppingCarFragment shoppingCarFragment = new ShoppingCarFragment();
  MineFragment mineFragment = new MineFragment();
  //添加到數(shù)組
  mFragments = new Fragment[]{homeFragment, shopFragment, liveFragment, shoppingCarFragment, mineFragment};
  //開啟事務(wù)
  FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
  //添加首頁
  ft.add(R.id.fl_content, homeFragment).commit();
  //默認(rèn)設(shè)置為第0個
  setIndexSelected(0);
 }
 
 private void setIndexSelected(int index) {
  if (mIndex == index) {
   return;
  }
  FragmentManager fragmentManager = getSupportFragmentManager();
  FragmentTransaction ft = fragmentManager.beginTransaction();
  //隱藏
  ft.hide(mFragments[mIndex]);
  //判斷是否添加
  if (!mFragments[index].isAdded()) {
   ft.add(R.id.fl_content, mFragments[index]).show(mFragments[index]);
  } else {
   ft.show(mFragments[index]);
  }
  ft.commit();
  //再次賦值
  mIndex = index;
 
 }
 
 private void setRadioGroupListener() {
  radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
   @Override
   public void onCheckedChanged(RadioGroup radioGroup, int i) {
    switch (i) {
     case R.id.rb_home:
      setIndexSelected(0);
      break;
     case R.id.rb_shop:
      setIndexSelected(1);
      break;
     case R.id.rb_live:
      setIndexSelected(2);
      break;
     case R.id.rb_shopping_car:
      setIndexSelected(3);
      break;
     case R.id.rb_mine:
      setIndexSelected(4);
      break;
     default:
      setIndexSelected(0);
      break;
    }
   }
  });
 }
 
 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK) {
   //僅當(dāng)activity為task根（即首個啟動activity）時才生效,這個方法不會改變task中的activity狀態(tài)，
   // 按下返回鍵的作用跟按下HOME效果一樣；重新點(diǎn)擊應(yīng)用還是回到應(yīng)用退出前的狀態(tài)；
   moveTaskToBack(false);
   return true;
  }
  return super.onKeyDown(keyCode, event);
 }
}

Fragment,這里只列出HomeFragment的，其他都是一樣

public class HomeFragment extends BaseFragment {
 
 public HomeFragment() {
 }
 
 
 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
  View view=inflater.inflate(R.layout.fragment_home,container,false);
  return view;
 }
 
 
}

activity_main.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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">
 
 <FrameLayout
  android:id="@+id/fl_content"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:layout_above="@+id/line" />
 
 <View
  android:id="@+id/line"
  android:layout_width="match_parent"
  android:layout_height="@dimen/line_size"
  android:layout_above="@+id/radioGroup"
  android:background="#9e9e9e" />
 
 <RadioGroup
  android:id="@+id/radioGroup"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_alignParentBottom="true"
  android:clickable="true"
  android:gravity="center"
  android:orientation="horizontal"
  android:padding="3dp">
 
  <RadioButton
   android:id="@+id/rb_home"
   style="@style/RadioButtonStyle"
   android:checked="true"
   android:drawableTop="@drawable/btn_home"
   android:text="@string/home" />
 
  <RadioButton
   android:id="@+id/rb_shop"
   style="@style/RadioButtonStyle"
   android:drawableTop="@drawable/btn_shop"
   android:text="@string/shop" />
 
  <RadioButton
   android:id="@+id/rb_live"
   style="@style/RadioButtonStyle"
   android:drawableTop="@drawable/btn_live"
   android:text="@string/live" />
 
  <RadioButton
   android:id="@+id/rb_shopping_car"
   style="@style/RadioButtonStyle"
   android:drawableTop="@drawable/btn_shopping_car"
   android:text="@string/shopping_car" />
 
  <RadioButton
   android:id="@+id/rb_mine"
   style="@style/RadioButtonStyle"
   android:drawableTop="@drawable/btn_mine"
   android:text="@string/mine" />
 
 </RadioGroup>
 
</RelativeLayout>

RadioButton的樣式

<style name="RadioButtonStyle">
  <item name="android:layout_width">0dp</item>
  <item name="android:layout_weight">1</item>
  <item name="android:layout_height">match_parent</item>
  <item name="android:layout_marginRight">10dp</item>
  <item name="android:layout_marginLeft">10dp</item>
  <item name="android:button">@null</item>
  <item name="android:gravity">center</item>
  <item name="android:textColor">@color/color_radiobutton</item>
  <item name="android:textSize">10sp</item>
</style>

Demo下載地址：底部菜單欄

溫馨提示：以后我自己寫的demo都是用Android Studio寫的了，用Eclipse的同學(xué)要的話需要自己改一下，時代在進(jìn)步，工具也在升級！

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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