Question

我创建的ListView在每个项目中都有PopupMenu。我创建了menu layout并将其用作我的PopupMenu。我的问题是，每当我点击ListView项目中的省略号选项时，PopupMenu都会显示Text，但Icon未显示。

这是我的xml菜单：

<menu
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<item
    android:id="@+id/action_retry"
    android:icon="@drawable/retry"
    android:title="@string/retry"
    app:showAsAction="always"
    />
<item
    android:id="@+id/action_delete"
    android:icon="@drawable/delete"
    android:title="@string/delete"
    app:showAsAction="always"
    />
 </menu>

然后在我的Adapter ListView中就像这样：

public class MyListViewAdapter extends BaseAdapter implements MenuItem.OnMenuItemClickListener {

.....

 @Override
public View getView(final int position, View convertView, ViewGroup parent) {

    if (convertView == null) {
        LayoutInflater inflater = activity.getLayoutInflater();
        convertView = inflater.inflate(R.layout.mylistrow, null);
    }

    final View action = (View) convertView.findViewById(R.id.action);

    action.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v) {
            showPopup(action, position);
                      }
    });

    // ....codes for listview creation....

    return convertView;
}

public void showPopup(View v, int listItemPosition) {
    PopupMenu popup = new PopupMenu(mContext, v);
    MenuInflater inflater = popup.getMenuInflater();
    inflater.inflate(R.menu.outbox_menu, popup.getMenu());
    popup.show();
}

@Override
public boolean onMenuItemClick(MenuItem item) {

    switch (item.getItemId()) {
        case R.id.action_retry:

            return true;
        case R.id.action_delete:

            return true;
        default:
            return false;
    }
}

提前感谢您的帮助。

Answer 1

我在此link中找到了一个解决方案并将其应用于我的代码。

PopupMenu popup = new PopupMenu(mContext, view);
    try {
        Field[] fields = popup.getClass().getDeclaredFields();
        for (Field field : fields) {
            if ("mPopup".equals(field.getName())) {
                field.setAccessible(true);
                Object menuPopupHelper = field.get(popup);
                Class<?> classPopupHelper = Class.forName(menuPopupHelper.getClass().getName());
                Method setForceIcons = classPopupHelper.getMethod("setForceShowIcon", boolean.class);
                setForceIcons.invoke(menuPopupHelper, true);
                break;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 2

int size = 0; Node head; boolean isEmpty1() { return head == null; } boolean isEmpty2() { return size == 0; }是一个隐藏的类，但确实包含一个显示图标的方法。您需要使用反射来显示菜单中的图标。请尝试在MenuBuilder：

中添加此内容

showPopop(View, int)

Answer 3

在科特林

  val popup = PopupMenu(context, holder.img_menu)
        try {
            popup.inflate(R.menu.bank_edit_menu)
            val fields: Array<Field> = popup.javaClass.declaredFields
            for (field in fields) {
                if ("mPopup" == field.getName()) {
                    field.setAccessible(true)
                    val menuPopupHelper: Any = field.get(popup)
                    val classPopupHelper =
                        Class.forName(menuPopupHelper.javaClass.name)
                    val setForceIcons: Method = classPopupHelper.getMethod(
                        "setForceShowIcon",
                        Boolean::class.javaPrimitiveType
                    )
                    setForceIcons.invoke(menuPopupHelper, true)
                    break
                }
            }
            popup.setOnMenuItemClickListener(object : PopupMenu.OnMenuItemClickListener{
                override fun onMenuItemClick(p0: MenuItem?): Boolean {
                    Log.e(">>",p0.toString())
                    return true
                }

            })
            popup.show();

        } catch (e: Exception) {
            e.printStackTrace()
        }

PopupMenu图标未显示

3 个答案: