activity+fragment+listview+adapter+bean在同一个类中的套路

activity_main.

<?<FrameLayout     android:id="@+id/container"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context=".MainActivity">
</FrameLayout>

fargment_main.

<?<LinearLayout   android:layout_width="match_parent" android:layout_height="match_parent">
 <ListView
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:id="@+id/list"></ListView>
</LinearLayout>

list_item_main.

<?<RelativeLayout   android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:padding="8dp" >

  <TextView
    android:id="@+id/text1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:text="TEXT1"
    android:textSize="16sp" />
  <TextView
    android:id="@+id/text2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/text1"
    android:layout_below="@+id/text1"
    android:text="TEXT2"
    android:textSize="12sp" />

</RelativeLayout>

2.java

MainActivity.java

public class MainActivity extends FragmentActivity {
  MapView mMapView = null;
  private BaiduMap mBaiduMap;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //在使用SDK各组件之前初始化context信息，传入ApplicationContext
    //注意该方法要再setContentView方法之前实现
    setContentView(R.layout.activity_main);
    if (savedInstanceState == null) {
      getSupportFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
    }

  }

  public static class PlaceholderFragment extends Fragment implements AdapterView.OnItemClickListener {
    private ListView listView;
    private MainAdapter adapter;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
      View view = inflater.inflate(R.layout.fragment_main, container, false);
      listView= (ListView) view.findViewById(R.id.list);
      adapter = new MainAdapter(getContext(),R.layout.list_item_main,getDateBean());
      listView.setAdapter(adapter);
      listView.setOnItemClickListener(this);
      return view;
    }
    public static List<DataBean> getDateBean() {
      List<DataBean> list = new ArrayList<>();
      list.add(new DataBean("基本地图功能", "创建一张百度地图并管理地图的生命周期"));
      list.add(new DataBean("图层展示", "展示普通图、卫星图、交通流量图及百度城市热力图"));
      list.add(new DataBean("地图操作功能", "介绍地图基本控制方法"));
      return list;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
      Intent intent;
      switch (position) {
        case 0:
          intent = new Intent(getActivity(), BaseMap.class);
          startActivity(intent);
          break;
        case 1:
          intent = new Intent(getActivity(), Layers.class);
          startActivity(intent);
          break;
        case 2:
          intent = new Intent(getActivity(), Location.class);
          startActivity(intent);
          break;
        default:
          break;
      }
    }
  }

  public static class MainAdapter extends ArrayAdapter<DataBean> {
    private int resourceID;
    public MainAdapter(Context context, int resource, List<DataBean> objects) {
      super(context, resource, objects);
      resourceID = resource;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      ViewHolder holder;
      if (convertView == null) {
        convertView = View.inflate(getContext(), resourceID, null);
        holder = new ViewHolder();
        holder.text1 = (TextView) convertView.findViewById(R.id.text1);
        holder.text2 = (TextView) convertView.findViewById(R.id.text2);
        convertView.setTag(holder);
      } else {
        holder = (ViewHolder) convertView.getTag();
      }
      DataBean dataBean = getItem(position);
      holder.text1.setText(dataBean.text1);
      holder.text2.setText(dataBean.text2);
      return convertView;
    }

    class ViewHolder{
      TextView text1;
      TextView text2;
    }
  }
  public static class DataBean {
    String text1;
    String text2;

    public DataBean(String text1, String text2) {
      this.text1 = text1;
      this.text2 = text2;
    }
  }

}