Xamarin.Android 关于GridView 的正确使用方式

https://blog.csdn.net/qq_35504350/article/details/78189004

 

这个是重点

• JavaList<IDictionary<string, object>> data_list = null;//一定要用javalist不能用IList

  JavaDictionary<string, object> map = new JavaDictionary<string, object>();

如果你使用的C# 自带的List 会出现重复点击的问题

Dictionary 如果使用的是这个，那么会加载不出来菜单

 JavaList<IDictionary<string, object>> menuDatas = new JavaList<IDictionary<string, object>>();
            foreach (var item in permissionArray)
            {
                JavaDictionary<string, object> map = new JavaDictionary<string, object>();
                switch (item)
                {
                   case "1":
                        map.Add("image", Resource.Drawable.图片);
                        map.Add("text", "文字描述");
                        break;
                    case "2":
                        map.Add("image", Resource.Drawable.图片);
                        map.Add("text", "文字描述");
                        break;
                
                    default: break;
                }
                menuDatas.Add(map);
            }
            //新建适配器
            string[] fromMenu = { "image", "text" };
            int[] to = { Resource.Id.Img_MenuIco, Resource.Id.Txt_MenuTitle };

            SimpleAdapter listAdapter = new SimpleAdapter(this, menuDatas, Resource.Layout.component_gridview_menu, fromMenu, to);
            gvMenu.Adapter = listAdapter;
            gvMenu.ItemClick += GvMenu_ItemClick;

 

private void GvMenu_ItemClick(object sender, AdapterView.ItemClickEventArgs e)
        {
            switch (e.Position)
            {
                case 1: GridViewItemClick<要打开的页面类>(); break;
                case 2: GridViewItemClick<要打开的页面类>(); break;
             
                default:
                    new AlertDialog.Builder(this)
                    .SetMessage("该功能还在开发中...")
                    .Show();
                    break;
            }
        }

 

 private void GridViewItemClick<T>() where T : Activity
        {
            StartNewActivity<T>(this, Resource.Animation.activity_fade_in, Resource.Animation.activity_fade_out, false, null);
        }

 

 public void StartNewActivity<T>(Context ctext,int enterAnim, int exitAnim, bool isFinish, Bundle mBundle) where T : Activity
        {
            var typeActivity = typeof(T);
            Log.Debug("打开新页面", _context + "" + typeActivity);
            Intent mIntent = new Intent(ctext, typeActivity);
            if (mBundle != null)
            {
                mIntent.PutExtras(mBundle);
            }
            StartActivity(mIntent);
            OverridePendingTransition(enterAnim, exitAnim);
            if (isFinish)
            {
                Finish();
            }
        }