private async void LoadNewsList()
{
try
{
IsBusy = true;
if (_connectivity.NetworkAccess != NetworkAccess.Internet)
{
Device.BeginInvokeOnMainThread(() =>
{
_dialogService.DisplayAlert(AppResources.ConnectionPleaseCheckInternet);
});
return;
}
TopHeadlines latestNews = await _newsService.GetTopNewsByCategory("us", newsCategory, "f7cb4296dd7b4311b6c5e099345c71ab");
TechnologyNews = new ObservableCollection <Article>(latestNews.articles);
}
catch (Exception ex)
{
_dialogService.DisplayError(ex);
}
finally
{
IsBusy = false;
}
}
public async Task <IActionResult> getTopNewsByCategory(String category = null, String country = null, String sources = null, String q = null, int?pageSize = null, int?page = null)
{
using (var httpClient = new HttpClient()) {
try
{
String url = "https://newsapi.org/v2/top-headlines?";
TopHeadlines topHeadlines = null;
if (category != null)
{
url = url + "category=" + category + "&";
}
if (country != null)
{
url = url + "country=" + country + "&";
}
if (sources != null)
{
url = url + "sources=" + sources + "&";
}
if (q != null)
{
url = url + "q=" + q + "&";
}
if (pageSize != null)
{
url = url + "pageSize=" + pageSize + "&";
}
if (page != null)
{
url = url + "page=" + page + "&";
}
url = url + "apiKey=" + API_KEY;
//GET Method
// httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Authorization", API_KEY);
var response = await httpClient.GetAsync(new Uri(url)).ConfigureAwait(false);
response.EnsureSuccessStatusCode();
var stringResult = await response.Content.ReadAsStringAsync();
var rawData = JsonConvert.DeserializeObject <TopHeadlines>(stringResult);
topHeadlines = new TopHeadlines {
Status = rawData.Status,
TotalResults = rawData.TotalResults,
Articles = rawData.Articles
};
return(Ok(topHeadlines));
}
catch (HttpRequestException httpRequestException)
{
return(BadRequest($"Error getting data: {httpRequestException.Message}"));
}
}
}
protected override async void Invoke(ContentPage contentPage)
{
switch (NetworkService.ExistsInternetConnection())
{
case true:
//await contentPage.DisplayAlert("Internet Connection", "You are connected", "OK");
restServices = new RestServices();
topHeadlines = await restServices.GetTopHeadlines();
break;
case false:
await contentPage.DisplayAlert("Internet Connection", "You are NOT connected. Please, get a connection", "OK");
break;
}
}
public async Task <List <NewsArticle> > BindAllNewsHeadlines()
{
List <NewsArticle> newsArticles = new List <NewsArticle>();
GNewsAPI gNewsAPIHeadlines = await GetGNewsLocalNGHeadlines();
TopHeadlines newsAPIHeadlines = await GetTopHeadlines();
if (gNewsAPIHeadlines != null)
{
foreach (GNewsArticle headline in gNewsAPIHeadlines.Articles)
{
newsArticles.Add(
new NewsArticle
{
Source = headline.Source.Name,
Title = headline.Title,
PublishedAt = headline.PublishedAt,
Url = headline.Url,
UrlToImage = headline.Image
}
);
}
}
if (newsAPIHeadlines != null)
{
foreach (Article topheadline in newsAPIHeadlines.Articles)
{
newsArticles.Add(
new NewsArticle
{
Author = topheadline.Author,
Source = topheadline.Source.Name,
Title = topheadline.Title,
PublishedAt = topheadline.PublishedAt.ToShortDateString(),
Url = topheadline.Url,
UrlToImage = topheadline.UrlToImage
}
);
}
}
return(newsArticles);
}
