Android SimpleAdapter适配器使用详解

public class SampleHolderAdapter extends HolderAdapter<Object> {  //定义Item内部的点击事件，如果不需要可以不定义  public static final int CLICK_ACTION_ADD = 1;  public static final int CLICK_ACTION_UPDATE = 2;  public static final int CLICK_ACTION_DELETE = 3;  //构造函数配置数据源（可选，或者之后通过setData更新）  public SampleHolderAdapter(List<Object> data) {    super(data);  }  @Override  public BaseViewHolder<?> createViewHolder(int position) {    //创建期望的 ViewHolder    return new ViewHolder();  }  class ViewHolder extends BaseViewHolder<Object> {    Button btn1, btn2, btn3;    @Override    protected void onCreate(Context context, ViewGroup parent) {      //ViewHolder创建后onCreate会被执行1次      setContentView(R.layout.item_test);//setContent支持View或者layout id      btn1 = (Button) findViewById(R.id.btn1);//findViewById      btn2 = (Button) findViewById(R.id.btn2);      btn3 = (Button) findViewById(R.id.btn3);    }    @Override    protected void onDataChanged(int position, Object data) {      //adapter getView的时候onDataChanged会被执行一次      btn1.setText("add " + position);      btn2.setText("update " + position);      btn3.setText("delete " + position);      //      bindClick(btn1, position, CLICK_ACTION_ADD);//绑定ItemClick，每次都需bind      bindClick(btn2, position, CLICK_ACTION_UPDATE);      bindClick(btn3, position, CLICK_ACTION_DELETE);    }  }}

 //数据源    private final ArrayList<Object> mData = new ArrayList<>();  //创建Adapter并绑定数据源  private final SampleHolderAdapter mAdapter = new SampleHolderAdapter(mData);  @Override  protected void onCreate(@Nullable Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mListView = (ListView) findViewById(R.id.listview);    //绑定Adapter    mListView.setAdapter(mAdapter);    //设置click listener（由于CommonAdapter支持，并通过bindClick声明）    mAdapter.setOnItemClickListener(onItemClickListener);  }  //ClickListener实现  private OnItemClickListener onItemClickListener = new OnItemClickListener() {    @Override    public void onItemClick(CommonAdapter<?> adapter, View v, int position, int action) {      switch (action) {//action就是我们SampleHolderAdapte中定义并且bindClick的value        case SampleHolderAdapter.CLICK_ACTION_ADD:          toast(getContext(), position + " add click");          break;        case SampleHolderAdapter.CLICK_ACTION_UPDATE:          toast(getContext(),position + " update click");          break;        case SampleHolderAdapter.CLICK_ACTION_DELETE:          toast(getContext(), position + " delete click");          break;      }    }  };