这是我的自定义列表适配器，如何使用编辑文本在自定义列表适配器中实现搜索功能。我尝试了很多方法来实现搜索功能
public class ListAdapter extends BaseAdapter {
public ArrayList<Users> listDataContainers = new ArrayList<>();
ListAdapter(ArrayList<Users> listDataContainers) {
this.listDataContainers = listDataContainers;
}
@Override
public int getCount() {
return listDataContainers.size();
}
@Override
public User getItem(int arg0) {
return listDataContainers.get(arg0);
}
@Override
public long getItemId(int arg0) {
return arg0;
}
@Override
public View getView(int pos, View arg1, ViewGroup arg2) {
if (arg1 == null) {
LayoutInflater inflater = (LayoutInflater) getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
arg1 = inflater.inflate(R.layout.listitem_layout, arg2, false);
}
TextView pa_name = (TextView) arg1.findViewById(R.id.textName);
TextView pa_date = …当我上传新图像时,我想从文件夹中删除以前上传的图像.
这是我上传图片的代码:
try
{
string filename = Image1.ImageUrl.Substring(Image1.ImageUrl.IndexOf('/', Image1.ImageUrl.Length));
if (fileupload.PostedFile.FileName.Length > 0)
{
filename = Path.GetFileName(fileupload.PostedFile.FileName);
fileupload.SaveAs(Server.MapPath("~/Images/" + filename));
}
com.Parameters.AddWithValue("@Image",(filename.Length>0)? "Images/" + filename:string.Empty);
com.ExecuteNonQuery();
}
catch (Exception ex)
{
btnsub.Text = ex.Message;
}
在这里,我将图像保存在一个名为Images的服务器文件夹中,使用FileUpload,所以在我上传新图像之前,我想从文件夹中删除以前上传的图像.
我可以知道,如何删除以前上传的图片？
这是我的 default.aspx：
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
</div>
</form>
</body>
CS：
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ShopifyAuthorizationState state = HttpContext.Current.Session["Shopify.AuthState"] as ShopifyAuthorizationState;
ShopifyAPIClient client
= new ShopifyAPIClient(state);
string shopData = (string)client.Get("/admin/products.json");
JavaScriptSerializer serializer = new JavaScriptSerializer();
// Here Product is a object class which contains all of the attribute that JSON has.
List<Product> lstProduct = serializer.Deserialize<List<Product>>(shopData);
GridView1.DataSource = lstProduct;
GridView1.DataBind();
}
public class Product
{
}
} …我想要一个类似Chrome的浏览器行为,当用户输入字符串时,浏览器会决定是将字符串视为网址还是Google查询字符串.
我怎样才能做到这一点？
我在尝试,
boolean modifiedUrlValid = Patterns.WEB_URL.matcher(modifiedUrl).matches();
但这并没有发挥作用Android 5.0.请帮忙.
问候,