Android仿美团分类下拉菜单实例代码

本文实例为大家分享了Android仿美团下拉菜单的实现代码，分类进行选择，供大家参考，具体内容如下

效果图

操作平台

AS2.0
第三方框架：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'}

实现代码

1、实现逻辑：主要利用Spinner与BaseAdapter来实现菜单下拉。具体美观效果要靠各个控件的调整，以及必要的分割线添加。
2、核心代码

适配器的item代码：item_main.xml

<?xml version="1.0" encoding="utf-8"?>

主页面布局文件activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

style文件

MainActivity与适配器写在了一起，便于操作

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 data_list1;  private List data_list2;  private List data_list3;  private BaseAdapter arr_adapter;//适配器  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    ButterKnife.bind(this);    initData();    initAdapter();    setListener();  }  //设置监听事件，将来商家列表的排序都在这里面处理  private void setListener() {    mMainSp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {      @Override      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        Toast.makeText(MainActivity.this, "点击了"+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, "点击了"+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, "点击了"+data_list3.get(position), Toast.LENGTH_SHORT).show();      }      @Override      public void onNothingSelected(AdapterView<?> parent) {      }    });  }  private void initAdapter() {    //适配器    arr_adapter = new MyAdapter(data_list1);    mMainSp1.setAdapter(arr_adapter);    //适配器    arr_adapter = new MyAdapter(data_list2);    mMainSp2.setAdapter(arr_adapter);    //适配器    arr_adapter = new MyAdapter(data_list3);    mMainSp3.setAdapter(arr_adapter);  }  //设置数据来源，这个要在网络获取。由于数据不会太多，不再考虑性能优化问题  private void initData() {    //数据    data_list1 = new ArrayList<>();    data_list1.add("全部分类");    data_list1.add("零食");    data_list1.add("水果");    data_list1.add("洗衣");    data_list1.add("洗车");    data_list1.add("茶饮");    //数据    data_list2 = new ArrayList<>();    data_list2.add("商圈");    data_list2.add("郑州航院");    data_list2.add("华北水利水电大学");    data_list2.add("河南中医大学");    data_list2.add("河南财经大学");    //数据    data_list3 = new ArrayList<>();    data_list3.add("智能排序");    data_list3.add("好评优先");    data_list3.add("离我最近");    data_list3.add("价格最低");  }  //适配器  class MyAdapter extends BaseAdapter {    private LayoutInflater mLayoutInflater;    private List mDataList;    MyAdapter(List 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;    }    //数据不太多，没有使用ViewHolder进行处理。    @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内容，希望对大家学习Android软件编程有所帮助。

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