.Net语言 APP开发平台——Smobiler学习日志：快速实现手机上的图片上传功能

最前面的话：Smobiler是一个在VS环境中使用.Net语言来开发APP的开发平台，也许比Xamarin更方便

一、目标样式

我们要实现上图中的效果，需要如下的操作：

1.从工具栏上的“Smobiler Components”拖动一个ResourceUploader控件和一个ImageButton控件到窗体界面上

2.ImageButton的Click事件

VB：
   Private Sub imageButton1_Click(sender As Object, e As EventArgs)Handles imageButton1.Click
       resourceUploader1.Show()
   End Sub

C#：
   private void imageButton1_Click(object sender, EventArgs e)
   {
       resourceUploader1.Show();
   }

3.修改ResourceUploader控件的属性

a.MaxSelectCount属性

设置资源单次上传的最大数量，默认设置为“9”，一次最多上传9张图片，如图1；

b.QualityMode属性

获取或设置相机组件上传质量的模式，默认设置为“Custom”，即表示压缩上传和原图上传都支持，如图2；

若将该属性设置为“Compressed”，则表示只能压缩上传；

若将该属性设置为“Original”，则表示只能原图上传；

图1	图2

c.Uploading事件

VB：
   Dim imglist As List(Of String) = New List(Of String)
   Private Sub resourceUploader1_Uploading(sender As Object, e As BarcodeData)Handles resourceUploader1.Uploading
       Try
           If e.IsError = False Then
               e.SaveFile()
               imglist.Add(e.ResourceID)
               getImg()
           End If
       Catch ex As Exception
           MessageBox.Show(ex.Message)
      End Try
   End Sub

C#：
   private List<string> imglist = new List<string>();
   private void resourceUploader1_Uploading(object sender, BinaryData e)
   {
       try
       {
           if (e.IsError == false)
           {
               e.SaveFile();
               imglist.Add(e.ResourceID);
               getImg();
           }
       }
       catch (Exception ex)
       {
           MessageBox.Show(ex.Message);
       }
   }

注：调用ResourceUploader控件来获取图片

d.其他代码

VB：
   Private Sub resourceuploader1_ImageCaptured(sender As Object, e As BarcodeData)Handles resourceuploader1.ImageCaptured
        If imglist.Count > 0 & imglist.Count <= 9 Then
           For i = 0 To imglist.Count Step 1
               Select Case i
                   Case 1
                       img1.Visible = true
                       btndelimg1.Visible = true
                       img1.ResourceID = imglist(i - 1)
                       img1.Refresh()
                   Case 2
                       img2.Visible = true
                       btndelimg2.Visible = true
                       img2.ResourceID = imglist(i - 1)
                       img2.Refresh()
                   Case 3
                       img3.Visible = true
                       btndelimg3.Visible = true
                       img3.ResourceID = imglist(i - 1)
                       img3.Refresh()
                   Case 4
                       img4.Visible = true
                       btndelimg4.Visible = true
                       img4.ResourceID = imglist(i - 1)
                       img4.Refresh()
                   Case 5
                       img5.Visible = true
                       btndelimg5.Visible = true
                       img5.ResourceID = imglist(i - 1)
                       img5.Refresh()
                   Case 6
                       img6.Visible = true
                       btndelimg6.Visible = true
                       img6.ResourceID = imglist(i - 1)
                       img6.Refresh()
                   Case 7
                       img7.Visible = true
                       btndelimg7.Visible = true
                       img7.ResourceID = imglist(i - 1)
                       img7.Refresh()
                   Case 8
                       img8.Visible = true
                       btndelimg8.Visible = true
                       img8.ResourceID = imglist(i - 1)
                       img8.Refresh()
                   Case 9
                       img9.Visible = true
                       btndelimg9.Visible = true
                       img9.ResourceID = imglist(i - 1)
                       img9.Refresh()
              End Select
           Next
       End If
   End Sub

C#：
   private void getImg()
   {
       if (imglist.Count > 0 & imglist.Count <= 9)
       {
           for (int i = 1; i <= imglist.Count; i++)
           {
               switch (i)
               {
                   case 1:
                       img1.Visible = true;
                       btndelimg1.Visible = true;
                       img1.ResourceID = imglist[i - 1];
                       img1.Refresh();
                       break;
                   case 2:
                       img2.Visible = true;
                       btndelimg2.Visible = true;
                       img2.ResourceID = imglist[i - 1];
                       img2.Refresh();
                       break;
                   case 3:
                       img3.Visible = true;
                       btndelimg3.Visible = true;
                       img3.ResourceID = imglist[i - 1];
                       img3.Refresh();
                       break;
                   case 4:
                       img4.Visible = true;
                       btndelimg4.Visible = true;
                       img4.ResourceID = imglist[i - 1];
                       img4.Refresh();
                       break;
                   case 5:
                       img5.Visible = true;
                       btndelimg5.Visible = true;
                       img5.ResourceID = imglist[i - 1];
                       img5.Refresh();
                       break;
                   case 6:
                       img6.Visible = true;
                       btndelimg6.Visible = true;
                       img6.ResourceID = imglist[i - 1];
                       img6.Refresh();
                       break;
                   case 7:
                       img7.Visible = true;
                       btndelimg7.Visible = true;
                       img7.ResourceID = imglist[i - 1];
                       img7.Refresh();
                       break;
                   case 8:
                       img8.Visible = true;
                       btndelimg8.Visible = true;
                       img8.ResourceID = imglist[i - 1];
                       img8.Refresh();
                       break;
                   case 9:
                       img9.Visible = true;
                       btndelimg9.Visible = true;
                       img9.ResourceID = imglist[i - 1];
                       img9.Refresh();
                       break;
               }
           }
       }
   }

二、手机效果显示