修改android4.4图库系列二——自定义菜单

自定义菜单，主要的思路就是利用PopupWindow来模仿菜单的效果。效果图如下：

具体代码如下：

1、关键代码

      

ArrayAdapter listAdatper = new ArrayAdapter(getApplicationContext(), 
        		R.layout.item_menu_list, 
        		R.id.menuText, new String[]{"删除","设置"});
        // 加载popupWindow的布局文件  
        View popupWindowView = LayoutInflater.from(getApplicationContext())  
                .inflate(R.layout.view_popwindow, null);  
        final ListView menuList = (ListView)popupWindowView.findViewById(R.id.menuList);
        menuList.setAdapter(listAdatper);
        menuList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView parent, View view,
					int position, long id) {
				switch (position) {
				case 0:
					// 删除
					Log.e(TAG, "000000000");
					break;
				case 1:
					// 设置
					Log.e(TAG, "111111111");
					break;				
				default:
					Log.e(TAG, "default");
					break;
				}
			}
		});
        
        final PopupWindow popupWindow = new PopupWindow(popupWindowView, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        
		mainMenu.setOnClickListener(new OnClickListener() {
			@SuppressWarnings("deprecation")
			@Override
			public void onClick(View v) {
				// 如果不在弹出之前加上这条语句，ListView的item将无法点击 
				popupWindow.setFocusable(true);
				// 防止弹出菜单获取焦点之后，点击activity的其他组件没有响应
				popupWindow.setBackgroundDrawable(new BitmapDrawable()); 
				popupWindow.showAsDropDown(mainMenu); 
			}
		});

2、xml文件代码

       1）item_menu_list.xml

             

       2）view_popwindow.xml