彈出菜單沒有膨脹

Question

如何使用 OnMenuItemClickListeners 創建自定義彈出菜單類？ 我似乎找不到任何使用單獨課程的 SO 答案。 他們都在他們的活動中這樣做，但我想要一個單獨的彈出菜單類。

我試過創建它：

public class AddPhotoMenu extends PopupMenu {
    public AddPhotoMenu(Context context, View anchor) {
        super(context, anchor);
    }

    @Override
    public void inflate(int menuRes) {
        super.inflate(R.menu.popup_menu_fragevent_addphotos);
    }

    @Override
    public void setOnMenuItemClickListener(OnMenuItemClickListener listener) {
        new OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.popup_menu_fragevent_takephoto:
                        //Inflate a layout
                        Log.d(TAG, "onMenuItemClick: Take photo");

                        break;
                    case R.id.popup_menu_fragevent_selectphotos:
                        //Inflate a layout

                        Log.d(TAG, "onMenuItemClick: Select photo");
                        break;

                }
                return false;
            }
        };
    }

但是當我調用它時菜單不會膨脹。

 AddPhotoMenu addPhotoMenu = new AddPhotoMenu(this, mAddPhotosButton1);
 addPhotoMenu.show();

Answer 1

addPhotoMenu.inflate(R.menu.popup_menu_fragevent_addphotos);
addPhotoMenu.setOnMenuItemClickListener(addPhotoMenu); 
// Need to add this line otherwise it won't work.
addPhotoMenu.show();

歸功於：

PopupMenu onMenuItemClick 未被調用

Answer 2

假設您有一個按鈕，單擊該按鈕會顯示彈出菜單。 按照此操作以擴充自定義彈出菜單。

Button btn = (Button) findViewById(R.id.btn);   
btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            PopupMenu popup = new PopupMenu(MainActivity.this, v);
            popup.getMenuInflater().inflate(R.menu.popup_menu_fragevent_addphotos, popup.getMenu());

            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                public boolean onMenuItemClick(MenuItem item) {
                    switch (item.getItemId()) {
                    case R.id.popup_menu_fragevent_takephoto:
                        //Inflate a layout
                        Log.d(TAG, "onMenuItemClick: Take photo");

                        return true;
                    case R.id.popup_menu_fragevent_selectphotos:
                        //Inflate a layout

                        Log.d(TAG, "onMenuItemClick: Select photo");
                        return true;

                }
                return false;
                }
            });
            popup.show();//showing popup menu
        }
    });

Answer 3

請嘗試以下代碼。

public class AddPhotoMenu extends PopupMenu {
    public AddPhotoMenu(Context context, View anchor) {
        super(context, anchor);
   getMenuInflater().inflate(R.menu.popup_menu_fragevent_addphotos, getMenu());

    }



    @Override
    public void setOnMenuItemClickListener(OnMenuItemClickListener listener) {
        new OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.popup_menu_fragevent_takephoto:
                        //Inflate a layout
                        Log.d(TAG, "onMenuItemClick: Take photo");

                        break;
                    case R.id.popup_menu_fragevent_selectphotos:
                        //Inflate a layout

                        Log.d(TAG, "onMenuItemClick: Select photo");
                        break;

                }
                return false;
            }
        };
    }

嘗試從構造函數擴展菜單布局，您不需要覆蓋 inflate 方法。

您可以從 Activity/Fragment 覆蓋 setOnMenuItemClickListener 並將其從自定義類中刪除

 addPhotoMenu .setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
           @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.popup_menu_fragevent_takephoto:
                        //Inflate a layout
                        Log.d(TAG, "onMenuItemClick: Take photo");

                        break;
                    case R.id.popup_menu_fragevent_selectphotos:
                        //Inflate a layout

                        Log.d(TAG, "onMenuItemClick: Select photo");
                        break;

                }
                return false;
            }
        };

我希望這能幫到您。

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