listview Popupmenu显示错误值

问题描述：

我试图显示listview的项目名称，当其popup菜单被点击，但我有麻烦，因为它总是显示或返回“false”值。任何想法如何解决这个问题？感谢listview Popupmenu显示错误值

public void toast(View v){ 
     showPopupMenu(v); 
    } 
    private void showPopupMenu(View v){ 
     PopupMenu pop = new PopupMenu(CompanyActivity.this, v); 
     pop.getMenuInflater().inflate(R.menu.menu,pop.getMenu()); 

     pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 

      @Override 
      public boolean onMenuItemClick(MenuItem item) { 
       if(item.getItemId() == R.id.view){ 
        Toast.makeText(getApplicationContext(),item.getItemId(),Toast.LENGTH_SHORT) 
          .show(); 

        return true; 
       } 

       return false; 
      } 
     }); 

     pop.show(); 
    }

编辑：我想被点击的列表视图列表项的值，但它表明，被点击的菜单项。

public void toast(View v){ 
     showPopupMenu(v); 
    } 
    private void showPopupMenu(View v){ 
     PopupMenu pop = new PopupMenu(CompanyActivity.this, v); 
     pop.getMenuInflater().inflate(R.menu.menu,pop.getMenu()); 

     pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 

      @Override 
      public boolean onMenuItemClick(MenuItem item) { 
       Toast.makeText(CompanyActivity.this,"text: "+item.getTitle(),Toast.LENGTH_SHORT).show(); 

       return true; 
       } 
      }); 
     pop.show(); 
    }

为什么你这样做“item.getItemId（）== R.id.view”？ – BlaShadow 2014-09-25 20:58:37

即时消息检查项目点击是否等于我的menu.xml中的项目，我做对了吗？ – Jonathan 2014-09-25 21:00:16

如果你创建一个上下文菜单，你可能做错了什么，但试着看看这个http://developer.android.com/guide/topics/ui/menus.html#context-menu – BlaShadow 2014-09-25 21:05:33

答

ListView项的“名称”完全取决于您用于ListView的适配器。请记住，菜单项ID与列表视图ID无关，该ID与适配器项ID无关。为了让弹出菜单知道哪个项目被点击了，您需要使用列表项位置从适配器中查找它。它会这样工作：

@Override 
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
    showPopupMenu(view, position); 
} 
private void showPopupMenu(View anchor, final int position) { 
    PopupMenu popupMenu = new PopupMenu(
      this, 
      anchor); 
    popupMenu.inflate(R.menu.menu); 

    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 

     @Override 
     public boolean onMenuItemClick(MenuItem item) { 
      // Depending on what type of object backs your adapter, you may have 
      // to do something different here. 
      String title = String.valueOf(mListView.getAdapter().getItem(position)); 
      Toast.makeText(MyActivity.this, "text: " + title, Toast.LENGTH_SHORT).show(); 

      return true; 
     } 
    }); 
    popupMenu.show(); 
}

listview Popupmenu显示错误值

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