private async void SearchCommandHandler()
{
var result = new SearchSuggestModel();
if (SelectedItem != null)
{
result.KeyWords = SelectedItem.Name;
if (SelectedItem.Location != null)
{
result.Lat = SelectedItem.Location.Lat;
result.Lng = SelectedItem.Location.Lng;
}
}
else
{
result.KeyWords = SearchKeyWords;
}
//Messenger.Default.Send(result, MessengeToken.SearchCallBack);
//await IocHelper.GetNavigationPage().PopAsync();
await IocHelper.GetNavigationPage().PushAsync(new BaiduMapView(result));
}
private async Task <LocationModel> SearchPOI(SearchSuggestModel searchSuggestModel)
{
if (!string.IsNullOrEmpty(searchSuggestModel?.KeyWords))
{
if (searchSuggestModel.ContainLocation)
{
//直接返回坐标
return(new LocationModel {
Lat = searchSuggestModel.Lat, Lng = searchSuggestModel.Lng
});
}
else
{
var encodekeyWord = StringHelper.UrlEncode(searchSuggestModel.KeyWords);
var city = string.Empty;
if (!string.IsNullOrEmpty(PositionHelper.City))
{
city = PositionHelper.City;
}
else
{
city = "131";
}
//todo:修改范围
var api =
$"http://api.map.baidu.com/place/v2/search?query={encodekeyWord}&page_size=1&page_num=0&scope=1®ion={city}&output=json&ak={AppInfo.BaiduMapAk}";
using (var httpClient = new HttpClient())
{
var response = await httpClient.GetAsync(api);
if (response.IsSuccessStatusCode)
{
var json = await response.Content.ReadAsStringAsync();
var objResluts = JsonConvert.DeserializeObject <BaiduJsonPlaceApiModel>(json);
//转换此次结果
var result = objResluts?.Results?.FirstOrDefault();
if (result != null)
{
return(new LocationModel {
Lat = result.Location.Lat, Lng = result.Location.Lng
});
}
}
}
}
}
return(null);
}
public BaiduMapView(SearchSuggestModel searchSuggestModel)
{
InitializeComponent();
_searchSuggestModel = searchSuggestModel;
//todo:使用xaml构建该页面
_absoluteLayout = new AbsoluteLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
_hybirdWeb = new HybridWebView
{
Uri = "index.html",
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand
};
_absoluteLayout.Children.Add(_hybirdWeb, new Rectangle(0, 0, DeviceInfo.Width, DeviceInfo.Height));
_searchEntry = new Entry
{
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.White,
Placeholder = "搜索"
};
//_searchEntry.Focused += SearchEntryOnFocused;
_absoluteLayout.Children.Add(_searchEntry,
new Rectangle(20, 35, DeviceInfo.Width - 40, AbsoluteLayout.AutoSize));
Content = _absoluteLayout;
//Messenger.Default.Register<SearchSuggestModel>(this, MessengeToken.SearchCallBack, SearchKeyWordCallBack);
//_hybirdWeb.InvokeJsFunction("loadJScript", null, _searchSuggestModel.Lng, _searchSuggestModel.Lat);
}
private async void SearchKeyWordCallBack(SearchSuggestModel searchSuggestModel)
{
try
{
if (!string.IsNullOrEmpty(searchSuggestModel?.KeyWords))
{
_searchEntry.Text = searchSuggestModel.KeyWords;
var location = await SearchPOI(searchSuggestModel);
if (location != null)
{
await Task.Run(async() =>
{
await Task.Delay(800);
//Device.BeginInvokeOnMainThread(() =>
//{
_hybirdWeb.InvokeJsFunction("addMarker", null, location.Lng, location.Lat);
//});
});
}
//弹出门牌号输入
_registerEntry = new StackLayout
{
Orientation = StackOrientation.Horizontal
};
_houseNumber = new Entry
{
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.White,
Placeholder = "楼号/门牌号"
};
var button = new Button
{
Text = "确定",
HorizontalOptions = LayoutOptions.End,
Command = new RelayCommand(CallBack)
};
_registerEntry.Children.Add(_houseNumber);
_registerEntry.Children.Add(button);
_absoluteLayout.Children.Add(_registerEntry,
new Rectangle(20, 35 + 15 + _searchEntry.Height, DeviceInfo.Width - 40, AbsoluteLayout.AutoSize));
}
else
{
_searchEntry.Text = string.Empty;
_hybirdWeb.InvokeJsFunction("clearMarker", null, null);
if (_registerEntry != null)
{
_registerEntry.IsVisible = false;
_absoluteLayout.Children.Remove(_registerEntry);
_registerEntry = null;
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
