一、Android具体开发的一些小例子 谁有啊 发我一份

这是一个多媒体播放器，可以看视频，听音乐，浏览图片。不过，在运行本项目之前，先把音乐放在SDCard的music目录下，图片放在SDCard的pic目录下，视频放在SDCard的video目录下，或者你可以更改程序中它们存放的路径。

源代码怎么发呢？？？？！！！

二、基于电子商务平台的推荐系统设计与实现

1、安全性 2、稳定性 3、是否兼容服务器 4、数据库设计要能承受 5、知道网站是B2B、B2C或者是B2G 6、方便性 7、处理速度快 8、客户服务 9、意见反馈 我个人意见是那么多。

三、求一个VB开发实例！

'添加一个名为label1的标签控件，并将其index设为0；再添加一个名为command1的按钮控件

Dim a(1 To 9) As Boolean

Dim win As Boolean, begin As Boolean, haveload As Boolean, start As Boolean

Private Sub Command1_Click()

start = True: begin = False

For i = 1 To 9

   a(i) = False

Next i

Form_Load

End Sub

Private Sub Form_Load()

a(9) = True

Label1(0).Visible = False

Me.Height = 4400

Me.Width = 4000

Scale (0, 0)-(3, 3.3)

If haveload = False Then

   haveload = True: start = True

   Command1.Top = 3: Command1.Left = 2

   Command1.Width = 1: Command1.Height = 0.3

   Command1.Caption = 开始

   For i = 1 To 9

    Load Label1(i)

   Next i

End If

For i = 1 To 9

Label1(i).Height = 1

Label1(i).Width = 1

Label1(i).Visible = True

Label1(i).Top = (i - 1) \ 3

Label1(i).Left = (i - 1) Mod 3

Label1(i).Caption = Str(i)

Label1(i).BackColor = QBColor(i)

Label1(i).FontBold = True

Label1(i).FontSize = 40

Next i

Label1(9).Caption = : Label1(9).BackColor = vbWhite

Randomize

For i = 1 To 500

   r% = Int(9 * Rnd) + 1

   Call Label1_Click(r)

Next i

begin = True

End Sub

Private Sub Label1_Click(index As Integer)

Dim x1 As Integer, y1 As Integer

If start = True Then

   If a(index) = False Then

    x1 = (index - 1) Mod 3: y1 = (index - 1) \ 3

    If x1 - 1 > -0.2 Then

    If a(x1 + y1 * 3) = True Then Call yidong(x1 + y1 * 3, index)

    End If

    If x1 + 1 < 2.2 Then

    If a(x1 + y1 * 3 + 2) = True Then Call yidong(x1 + y1 * 3 + 2, index)

    End If

    If y1 - 1 > -0.2 Then

    If a(x1 + 1 + (y1 - 1) * 3) = True Then Call yidong(x1 + (y1 - 1) * 3 + 1, index)

    End If

    If y1 + 1 < 2.2 Then

    If a(x1 + 1 + (y1 + 1) * 3) = True Then Call yidong(x1 + 1 + (y1 + 1) * 3, index)

    End If

   End If

   win = True

   For i = 1 To 8

    If Val(Label1(i).Caption) <> i Then win = False

   Next i

   If win = True And begin = True Then MsgBox (恭喜你成功了): begin = False: start = False

End If

End Sub

Sub yidong(x, index)

Label1(0).Caption = Label1(index).Caption

    Label1(index).Caption = Label1(x).Caption

    Label1(x).Caption = Label1(0).Caption

    a(index) = True: a(x) = False

    Label1(0).BackColor = Label1(index).BackColor

    Label1(index).BackColor = Label1(x).BackColor

    Label1(x).BackColor = Label1(0).BackColor

End Sub