Android仿美團分類下拉式功能表執行個體代碼_Android

本文執行個體為大家分享了Android仿美團下拉式功能表的實現代碼，分類進行選擇，供大家參考，具體內容如下

效果圖

操作平台

AS2.0
第三方架構：butterknife
build.gradle

dependencies {compile fileTree(dir: 'libs', include: ['*.jar'])testCompile 'junit:junit:4.12'compile 'com.android.support:appcompat-v7:23.4.0'compile 'com.jakewharton:butterknife:7.0.1'}

實現代碼

1、實現邏輯：主要利用Spinner與BaseAdapter來實現菜單下拉。具體美觀效果要靠各個控制項的調整，以及必要的分割線添加。
2、核心代碼

適配器的item代碼：item_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical"  >  <TextView    android:id="@+id/item_main_tv"    android:layout_width="match_parent"    android:layout_height="40dp"    android:layout_marginLeft="16dp"    android:background="#fff"    android:gravity="center_vertical"    android:singleLine="true"    android:text="測試文字"    android:textSize="15dp"    />  <!--分割線-->  <TextView    android:id="@+id/main_tv_line"    android:layout_width="match_parent"    android:layout_height="1dp"    android:layout_marginLeft="16dp"    android:layout_marginRight="16dp"    android:background="#edecec"/></LinearLayout>

首頁面布局檔案activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical"  >  <LinearLayout    android:layout_width="match_parent"    android:layout_height="40dp"    >    <Spinner      android:id="@+id/main_sp1"      style="@style/style_spinner">    </Spinner>    <!--這個是spinner之間的分割線-->    <ImageView      style="@style/style_mian_verline"/>    <Spinner      android:id="@+id/main_sp2"      style="@style/style_spinner"      ></Spinner>    <ImageView      style="@style/style_mian_verline"/>    <Spinner      android:id="@+id/main_sp3"      style="@style/style_spinner"      ></Spinner>  </LinearLayout>  <!--設定一條分割線-->  <TextView    android:layout_width="match_parent"    android:layout_height="1dp"    android:background="#dcdcdc"    />  <LinearLayout    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ffffff">    <TextView      android:layout_width="match_parent"      android:layout_height="match_parent"      android:gravity="center"      android:text="我是分類下面的本文內容"/>  </LinearLayout></LinearLayout>

style檔案

 <!--spinner的樣式-->  <style name="style_spinner">    <item name="android:layout_width">0dp</item>    <item name="android:layout_height">40dp</item>    <item name="android:layout_weight">1</item>    <item name="android:dropDownVerticalOffset">40dp</item>    <item name="android:dropDownWidth">1000dp</item>  </style>  <!--定義spinner之間的線的樣式-->  <style name="style_mian_verline">    <item name="android:layout_width">1dp</item>    <item name="android:layout_height">25dp</item>    <item name="android:background">#dcdcdc</item>    <item name="android:layout_gravity">center_vertical</item>  </style>

MainActivity與適配器寫在了一起，便於操作

public class MainActivity extends AppCompatActivity {  @Bind(R.id.main_sp1)  Spinner mMainSp1;  @Bind(R.id.main_sp2)  Spinner mMainSp2;  @Bind(R.id.main_sp3)  Spinner mMainSp3;  private List<String> data_list1;  private List<String> data_list2;  private List<String> data_list3;  private BaseAdapter arr_adapter;//適配器  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    ButterKnife.bind(this);    initData();    initAdapter();    setListener();  }  //設定監聽事件，將來商家列表的排序都在這裡面處理  private void setListener() {    mMainSp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {      @Override      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        Toast.makeText(MainActivity.this, "點擊了"+data_list1.get(position), Toast.LENGTH_SHORT).show();      }      @Override      public void onNothingSelected(AdapterView<?> parent) {      }    });    mMainSp2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {      @Override      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        Toast.makeText(MainActivity.this, "點擊了"+data_list2.get(position), Toast.LENGTH_SHORT).show();      }      @Override      public void onNothingSelected(AdapterView<?> parent) {      }    });    mMainSp3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {      @Override      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        Toast.makeText(MainActivity.this, "點擊了"+data_list3.get(position), Toast.LENGTH_SHORT).show();      }      @Override      public void onNothingSelected(AdapterView<?> parent) {      }    });  }  private void initAdapter() {    //適配器    arr_adapter = new MyAdapter(data_list1);    mMainSp1.setAdapter(arr_adapter);    //適配器    arr_adapter = new MyAdapter(data_list2);    mMainSp2.setAdapter(arr_adapter);    //適配器    arr_adapter = new MyAdapter(data_list3);    mMainSp3.setAdapter(arr_adapter);  }  //設定資料來源，這個要在網路擷取。由於資料不會太多，不再考慮效能最佳化問題  private void initData() {    //資料    data_list1 = new ArrayList<>();    data_list1.add("全部分類");    data_list1.add("零食");    data_list1.add("水果");    data_list1.add("洗衣");    data_list1.add("洗車");    data_list1.add("茶飲");    //資料    data_list2 = new ArrayList<>();    data_list2.add("商圈");    data_list2.add("鄭州航院");    data_list2.add("華北水利水電大學");    data_list2.add("河南中醫大學");    data_list2.add("河南財經大學");    //資料    data_list3 = new ArrayList<>();    data_list3.add("智能排序");    data_list3.add("好評優先");    data_list3.add("離我最近");    data_list3.add("價格最低");  }  //適配器  class MyAdapter extends BaseAdapter {    private LayoutInflater mLayoutInflater;    private List<String> mDataList;    MyAdapter(List<String> dataList) {      this.mDataList = dataList;      mLayoutInflater = LayoutInflater.from(MainActivity.this);    }    @Override    public int getCount() {      return mDataList.size();    }    @Override    public Object getItem(int position) {      return mDataList.get(position);    }    @Override    public long getItemId(int position) {      return position;    }    //資料不太多，沒有使用ViewHolder進行處理。    @Override    public View getView(int position, View convertView, ViewGroup parent) {      convertView = View.inflate(MainActivity.this, R.layout.item_main, null);      TextView textView = (TextView) convertView.findViewById(R.id.item_main_tv);      textView.setText(mDataList.get(position));      return convertView;    }  }}

以上就是本文的全部內容，希望對大家學習Android軟體編程有所協助。