Android仿QQ滑动弹出菜单标记已读、未读消息

注： 此处重写了父类中的getItemViewType方法，该方法中，我们根据Msg的isRead字段来判断返回值的是0还是1； 之后，我们将根据该返回值，来判断list item的菜单是何种类型！

4. 根据ItemViewType，创建滑动菜单：

import android.graphics.Color; 
import android.graphics.drawable.ColorDrawable; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.util.TypedValue; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.Toast; 
 
import com.apkfuns.logutils.LogUtils; 
import com.baoyz.swipemenulistview.SwipeMenu; 
import com.baoyz.swipemenulistview.SwipeMenuCreator; 
import com.baoyz.swipemenulistview.SwipeMenuItem; 
import com.baoyz.swipemenulistview.SwipeMenuListView; 
 
import java.util.ArrayList; 
import java.util.List; 
 
import butterknife.Bind; 
import butterknife.ButterKnife; 
import butterknife.OnItemClick; 
 
public class MainActivity extends AppCompatActivity { 
 
  // 方案列表 
  @Bind(R.id.listViewMyMsgs) 
  public SwipeMenuListView listViewMyMsgs; 
 
  private MyMsgAdapter msgAdapter; 
 
  // 消息集合 
  private List<Msg> msgs; 
 
  // 要删除的数据 
  private Msg dMsg; 
 
  // 要修改的数据 
  private int oPos; 
 
  private Msg oMyMsg; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
 
    ButterKnife.bind(this); 
 
    msgs = new ArrayList<Msg>(); 
 
    Msg msg1 = new Msg(); 
    msg1.id = 1; 
    msg1.title = "上邪"; 
    msg1.desc = "我欲与君相知，长命无绝衰"; 
    msg1.isRead = false; 
 
    Msg msg2 = new Msg(); 
    msg2.id = 2; 
    msg2.title = "爱在记忆中找你"; 
    msg2.desc = "如果可以恨你，全力痛恨你，连遇上亦要躲避"; 
    msg2.isRead = true; 
 
    msgs.add(msg1); 
    msgs.add(msg2); 
 
    msgAdapter = new MyMsgAdapter(this, msgs); 
    listViewMyMsgs.setAdapter(msgAdapter); 
 
    createMenu(); 
  } 
 
  /** 
   * 删除某个消息 
   * 
   * @param position 
   */ 
  private void deleteMsg(int position) { 
    // DoDeleteMsgRequest(String id,Handler mHandler, int reqCode) 
    dMsg = msgs.get(position); 
    if (dMsg != null) { 
      Toast.makeText(MainActivity.this, "删除 ： " + dMsg, Toast.LENGTH_SHORT).show(); 
 
      msgs.remove(dMsg); 
      msgAdapter.notifyDataSetChanged(); 
    } 
  } 
 
  /** 
   * 标记已读和未读 
   * 
   * @param position 
   */ 
  private void readMsg(int position) { 
    //DoReadMsgRequest(String id, String isRead, Handler mHandler, int reqCode) 
    oPos = position; 
    oMyMsg = msgs.get(position); 
    if (oMyMsg != null) { 
      msgs.get(position).isRead = !msgs.get(position).isRead; 
 
      msgAdapter.notifyDataSetChanged(); 
    } 
  } 
 
  private void createMenu() { 
    // step 1. create a MenuCreator 
    SwipeMenuCreator creator = new SwipeMenuCreator() { 
      @Override 
      public void create(SwipeMenu menu) { 
        switch (menu.getViewType()) { 
          case 0:// 未读 
            createMenu1(menu); 
            break; 
          case 1:// 已读 
            createMenu2(menu); 
            break; 
        } 
      } 
 
      private void createMenu1(SwipeMenu menu) { 
        SwipeMenuItem unreadItem = new SwipeMenuItem( 
            getApplicationContext()); 
        unreadItem.setId(1); 
        unreadItem.setBackground(new ColorDrawable(Color.parseColor("#555555"))); 
        unreadItem.setWidth(dp2px(90)); 
        unreadItem.setTitle("标为已读"); 
        unreadItem.setTitleSize(16); 
        unreadItem.setTitleColor(Color.parseColor("#FFFFFF")); 
        menu.addMenuItem(unreadItem); 
 
        SwipeMenuItem deleteItem = new SwipeMenuItem( 
            getApplicationContext()); 
        deleteItem.setId(0); 
        deleteItem.setBackground(new ColorDrawable(Color.parseColor("#EF4B3A"))); 
        deleteItem.setWidth(dp2px(90)); 
        deleteItem.setTitle("删除"); 
        deleteItem.setTitleSize(16); 
        deleteItem.setTitleColor(Color.parseColor("#FFFFFF")); 
        menu.addMenuItem(deleteItem); 
      } 
 
      private void createMenu2(SwipeMenu menu) { 
        SwipeMenuItem readedItem = new SwipeMenuItem( 
            getApplicationContext()); 
        readedItem.setId(2); 
        readedItem.setBackground(new ColorDrawable(Color.parseColor("#555555"))); 
        readedItem.setWidth(dp2px(90)); 
        readedItem.setTitle("标记未读"); 
        readedItem.setTitleSize(16); 
        readedItem.setTitleColor(Color.parseColor("#FFFFFF")); 
        menu.addMenuItem(readedItem); 
 
        SwipeMenuItem deleteItem = new SwipeMenuItem( 
            getApplicationContext()); 
        deleteItem.setId(0); 
        deleteItem.setBackground(new ColorDrawable(Color.parseColor("#EF4B3A"))); 
        deleteItem.setWidth(dp2px(90)); 
        deleteItem.setTitle("删除"); 
        deleteItem.setTitleSize(16); 
        deleteItem.setTitleColor(Color.parseColor("#FFFFFF")); 
        menu.addMenuItem(deleteItem); 
      } 
    }; 
    // set creator 
    listViewMyMsgs.setMenuCreator(creator); 
 
    // step 2. listener item click event 
    listViewMyMsgs.setOnMenuItemClickListener(new SwipeMenuListView.OnMenuItemClickListener() { 
      @Override 
      public boolean onMenuItemClick(int position, SwipeMenu menu, int index) { 
 
        SwipeMenuItem menuItem = menu.getMenuItem(index); 
        int id = menuItem.getId(); 
        switch (id) { 
          case 0: 
            LogUtils.e("删除 :" + position); 
            deleteMsg(position); 
            break; 
          case 1: 
            LogUtils.e("标记未读 :" + position); 
            readMsg(position); 
            break; 
          case 2: 
            LogUtils.e("标为已读 :" + position); 
            readMsg(position); 
            break; 
        } 
        return false; 
      } 
    }); 
  } 
 
  @OnItemClick(R.id.listViewMyMsgs) 
  public void onItemClick(AdapterView<?> parent, View view, int position, 
              long id) { 
    Msg myMsg = (Msg) parent.getAdapter().getItem( 
        position); 
    if (myMsg != null) { 
 
      if (myMsg.isRead) { // 如果是未读，需要标记为已读 
        readMsg(position); 
      } 
    } 
  } 
 
  private int dp2px(int dp) { 
    return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, 
        getResources().getDisplayMetrics()); 
  } 
} 
								 
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