public Task <int> SaveItemAsync(JokeItem item)
{
if (item.Id != 0)
{
return(Database.UpdateAsync(item));
}
else
{
return(Database.InsertAsync(item));
}
}
public async void DeleteJoke(JokeItem joke)
{
Scroll = ScrollEnum.NoScroll;
JokeList.Remove(joke);
UpdateBindedCollection();
if (Device.RuntimePlatform == Device.Android || Device.RuntimePlatform == Device.UWP)
{
await _databaseService.DeleteJoke(joke);
}
}
public async void AddJokeAsync()
{
try
{
if (!string.IsNullOrEmpty(url))
{
Scroll = ScrollEnum.Scroll;
var actualCategory = (Category == 0) ? (CategoryEnum)random.Next(1, 16) : Category;
var joke = await _jokeService.GetJokeAsync(url, actualCategory.ToString().ToLower()); //if category is "All", select random one
if (joke != null)
{
int id = 1;
if (JokeList.Count > 0)
{
id = JokeList.Last().Id + 1;
}
var jokeItem = new JokeItem
{
Id = id,
Icon = iconUrl,
Joke = joke.value,
Url = new Uri(joke.url),
RestId = joke.icon_url,
Category = actualCategory
};
JokeList.Add(jokeItem);
UpdateBindedCollection();
if (Device.RuntimePlatform == Device.Android || Device.RuntimePlatform == Device.UWP)
{
await _databaseService.AddJoke(jokeItem);
}
}
else
{
_toastMessage.ShowToast(commonErrorMessage);
}
}
else
{
_toastMessage.ShowToast(apiErrorMessage);
}
}
catch { _toastMessage.ShowToast(commonErrorMessage); }
}
/// <summary>
/// 获取笑话列表
/// </summary>
/// <param name="htmlContent"></param>
public static List <JokeItem> GetJokeList(int pageIndex)
{
string htmlContent = GetUrlContent(GetWBJokeUrl(pageIndex));
List <JokeItem> jokeList = new List <JokeItem>();
HtmlDocument htmlDoc = new HtmlDocument();
htmlDoc.LoadHtml(htmlContent);
HtmlNode rootNode = htmlDoc.DocumentNode;
string xpathOfJokeDiv = "//div[@class='article block untagged mb15']";
string xpathOfJokeContent = "./a/div[@class='content']/span";
string xpathOfImg = "./div[@class='author clearfix']/a/img";
try
{
HtmlNodeCollection jokeCollection = rootNode.SelectNodes(xpathOfJokeDiv);
int jokeCount = jokeCollection.Count;
JokeItem joke;
foreach (HtmlNode jokeNode in jokeCollection)
{
joke = new JokeItem();
HtmlNode contentNode = jokeNode.SelectSingleNode(xpathOfJokeContent);
if (contentNode != null)
{
joke.JokeContent = Regex.Replace(contentNode.InnerText, "(\r\n)+", "\r\n");
}
else
{
joke.JokeContent = "";
}
HtmlNode imgornameNode = jokeNode.SelectSingleNode(xpathOfImg);
if (imgornameNode != null)
{
joke.NickName = imgornameNode.GetAttributeValue("alt", "");
joke.HeadImage = GetWebImage("http:" + imgornameNode.GetAttributeValue("src", ""));
joke.HeadImage = joke.HeadImage != null ? new Bitmap(joke.HeadImage, 50, 50) : null;
}
else
{
joke.NickName = "匿名用户";
joke.HeadImage = null;
}
jokeList.Add(joke);
}
}
catch { }
return(jokeList);
}
public async Task <bool> DeleteJoke(JokeItem joke)
{
try
{
using (var db = new SQLiteConnection(GetDataPath(), SQLiteOpenFlags.ReadWrite |
SQLiteOpenFlags.FullMutex))
{
await Task.Run(() => db.Delete(joke));
return(true);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
return(false);
}
}
public async Task <bool> AddJoke(JokeItem joke)
{
if (FileExists())
{
try
{
using (var db = new SQLiteConnection(GetDataPath(), SQLiteOpenFlags.ReadWrite |
SQLiteOpenFlags.FullMutex))
{
await Task.Run(() => db.Insert(joke));
return(true);
}
}
catch { return(false); }
}
else
{
if (DbCreate())
{
try
{
using (var db = new SQLiteConnection(GetDataPath(), SQLiteOpenFlags.ReadWrite |
SQLiteOpenFlags.FullMutex))
{
await Task.Run(() => db.Insert(joke));
return(true);
}
}
catch { return(false); }
}
else
{
return(false);
}
}
}
public Task <int> DeleteItemAsync(JokeItem item)
{
return(Database.DeleteAsync(item));
}