B4X:
#Region Project Attributes
#ApplicationLabel: Chat Example
#VersionCode: 1
#VersionName: 1.0
#SupportedOrientations: portrait
#CanInstallToExternalStorage: False
#End Region
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: False
#End Region
Sub Process_Globals
End Sub
Sub Globals
Private xui As XUI
Private clvMessages As CustomListView
Private lblName As Label
Private ldates As Label
Private lblMessage As Label
Private messageSize As Int = 85%x
Private margin As Int = 2%x
Private internalYMargin As Int = 2%y
Private pWhite As Panel
Private tracker As Label
Private leftColor As Int = Colors.White
Private rightColor As Int = Colors.RGB(255,243,209)
Private border As Boolean = True
Private borderColor As Int = Colors.Black
Private borderWidth As Int = 2dip
'Private TextField As B4XFloatTextField
Private ComboBox1 As B4XComboBox
' Private edtMessage As EditText
Private edtMessage As B4XFloatTextField
Private InChatClient, OutChatClient As String
Private ClientID As Int '???? Needed Maybe 'ignore
Private ime As IME
End Sub
Sub Activity_Create(FirstTime As Boolean)
'this example is an adaptation of a project / example by @Douglas Farias Dec 2017
'https://www.b4x.com/android/forum/threads/clv-simple-chat-example-adjustable-text-size.87063/#content
'-------------------------------------------------------------------------------------------------------------------
Activity.LoadLayout("main")
ime.Initialize("ime")
'pWhitet.IsInitialized
' ime.AddHeightChangedEvent
' pWhite.Width = 100%x - messageSize - margin
ScrollToLastItem
clvMessages.AsView.Color = xui.Color_Transparent ' clv background color = activity color
ComboBox1.SetItems(Array As String( " ", "Winston Churchill", "Homer Simpson", "Kylo Ren")) 'first item blank ? ToBeInvestigated
ComboBox1.cmbBox.DropdownBackgroundColor = Colors.White
ComboBox1.cmbBox.DropdownTextColor = Colors.Black
ComboBox1.cmbBox.TextColor = Colors.Black
Log(ComboBox1.SelectedIndex)
OutChatClient = "Makumbi"
'@@@ from original example ...
'HERE A SIMPLE EXAMPLE OF HOW ADD A MESSAGE
'Add_Conversation(True,"Douglas Farias","Hi all! Here is a simple message example")
End Sub
Sub LoadMessages(client As String)
Dim ticks As Long 'ignore
Dim message, IOflag As String
Dim rs As ResultSet = Starter.oSQL.ExecQuery2("SELECT Timestamp, Message, IOFlag FROM tbl_Messages WHERE ChatClientName = ? ORDER BY Timestamp ASC", Array As String(client))
' Log(rs.RowCount)
Do While rs.NextRow
ticks = rs.GetLong("Timestamp")
Log(ticks)
message = rs.GetString("Message")
Log(message)
IOflag = rs.GetString("IOflag")
Log(IOflag)
'load the messages Left or right dependant on stored IOflag (In or Out Message)
If IOflag = "IN" Then
clvMessages.Add(Add_Conversation(True,InChatClient,message,ticks), 0)
Else
clvMessages.Add(Add_Conversation(False,OutChatClient, message,ticks), 0)
End If
Loop
Sleep(300)
If clvMessages.Size >0 Then clvMessages.ScrollToItem(clvMessages.Size - 1)
End Sub
Sub btnSendReceive_Click
'Dim lt As Long
'DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a" ' "1961-08-29"
'Dim datestring As String = DateTime.Date(getdate( DateTime.Now))
'lt = DateTime.DateParse(datestring)
'DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a"
'Log(DateTime.Date(lt))
Dim holds As Long = DateTime.Now
Dim btn As Button = Sender
If btn .Tag = "Send" Then
'save NEW message to the db (as OUTGOING message) and add to CLV
'DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a" ' "1961-08-29"
Starter.oSQL.ExecNonQuery2("INSERT INTO tbl_Messages VALUES( NULL, ?, ?, ?, ? )", Array As Object((holds), InChatClient, edtMessage.Text, "OUT"))
clvMessages.Add(Add_Conversation(False,OutChatClient, edtMessage.text,holds), 0)
ScrollToLastItem
Else 'Receive
'save NEW message to the db (as INCOMINGcomming message) and add to CLV
Starter.oSQL.ExecNonQuery2("INSERT INTO tbl_Messages VALUES( NULL, ?, ?, ?, ? )", Array As Object((holds), InChatClient, edtMessage.Text, "IN"))
clvMessages.Add( Add_Conversation(True,InChatClient, edtMessage.text,holds),0)
End If
edtMessage.text = ""
Sleep(300)
If clvMessages.Size >0 Then clvMessages.ScrollToItem(clvMessages.Size - 1)
End Sub
Sub ComboBox1_SelectedIndexChanged (Index As Int)
'InChatClient = ComboBox1.SelectedItem
clvMessages.Clear
'Get all chats with this client ...
LoadMessages(InChatClient)
End Sub
Sub getdate(gt As String) As String
Dim lt As Long
DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a" ' "1961-08-29"
Dim datestring As String = DateTime.Date(( gt))
lt = DateTime.DateParse(datestring)
DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a"
Log(DateTime.Date(lt))
'gt=DateTime.Date(lt)
Return DateTime.Date(lt)
End Sub
Sub Add_Conversation (leftChat As Boolean, name As String, message As String, dates As String) As Panel
Dim p As B4XView = xui.CreatePanel("")
p.SetLayoutAnimated(0, margin, 0, messageSize, 5%y)
p.LoadLayout("clvItems")
Log(dates)
'HERE WE ADD THE MESSAGE AND NAME TO LBNAME AND LBMESSAGE
lblName.Text = name
lblMessage.Text = message
ldates.Text= getdate(dates)
tracker.Text=dates
tracker.Visible=False
'Dim holdt As Long
'holdt= DateTime.DateParse(getdate(dates))
'Log(holdt)
Log(tracker.Text)
Log(ldates.Text)
'GET IF IS LEFT OR RIGHT CHAT
If leftChat Then
pWhite.Left = margin
lblName.Gravity = Bit.Or(Gravity.LEFT,Gravity.CENTER_VERTICAL)
lblMessage.Gravity = Bit.Or(Gravity.LEFT,Gravity.CENTER_VERTICAL)
ldates.Gravity = Bit.Or(Gravity.LEFT,Gravity.CENTER_VERTICAL)
Else
ldates.Width= 600%x
ldates.Left = 80%x-180%x
pWhite.Left = 100%x - messageSize - margin
lblName.Gravity = Bit.Or(Gravity.RIGHT,Gravity.TOP)
lblMessage.Gravity = Bit.Or(Gravity.RIGHT,Gravity.TOP)
ldates.Gravity = Bit.Or(Gravity.LEFT,Gravity.TOP)
End If
'HERE WE GET THE MESSAGE AND NAME CHAT
Private su As StringUtils
ldates.Left = 60%x-50%x
ldates.Width= 500%x
lblName.Top = 0 + internalYMargin
lblName.Height =su.MeasureMultilineTextHeight(lblName,lblName.Text)
lblMessage.Height =su.MeasureMultilineTextHeight(lblMessage,lblMessage.Text)
ldates.Height =su.MeasureMultilineTextHeight(ldates,ldates.Text)
lblMessage.Top = lblName.Top + lblName.Height
'ldates.Top = ldates.Top + ldates.Height
'lblMessage.Width= 230%x
'LATER GET THE CORRECT SIZE NEEDED WE APPLY THIS TO PANEL
p.Height = lblName.Height + lblMessage.Height + (internalYMargin * 2)
pWhite.Height = lblName.Height + lblMessage.Height + (internalYMargin * 2)
'pWhite.Height = ldates.Height + ldates.Height + (internalYMargin * 2)
'HERE WE SET THE COLOR AND BORDER TO THE MESSAGE PANEL
If border Then
If leftChat Then
Private cd As ColorDrawable
cd.Initialize2(leftColor,5,borderWidth,borderColor)
pWhite.Background = cd
'pWhite.Color = cd
Else
Private cd As ColorDrawable
cd.Initialize2(rightColor,5,borderWidth,borderColor)
pWhite.Background = cd
'pWhite.Color = cd
End If
Else
If leftChat Then
Private cd As ColorDrawable
cd.Initialize2(leftColor,5,0,borderColor)
pWhite.Background = cd
' pWhite.Color = cd
Else
Private cd As ColorDrawable
cd.Initialize2(rightColor,5,0,borderColor)
'pWhite.Color = cd
pWhite.Background = cd
End If
End If
p.Visible = True
Return p
End Sub
Sub Activity_Resume
End Sub
Sub Activity_Pause (UserClosed As Boolean)
End Sub
Private Sub ScrollToLastItem
Sleep(50)
If clvMessages.Size > 0 Then
If clvMessages.sv.ScrollViewContentHeight > clvMessages.sv.Height Then
clvMessages.ScrollToItem(clvMessages.Size - 1)
End If
End If
End Sub
Sub clvMessages_ItemLongClick (Index As Int, Value As Object)
Dim value1, value2,value3 As String
Dim holdk As String
'we need to get the values from the views
Dim content As B4XView = clvMessages.GetPanel(Index).GetView(0)
value1 = content.GetView(0).Text
value2 = content.GetView(1).Text
value3 = content.GetView(2).Text
holdk = content.GetView(3).Text
Log($"Value1: ${value1}, Value2: ${value2},Value3: ${value3}"$)
Log(holdk)
Dim hold As Long
'DateTime.DateFormat = "dd/MM/yyyy hh:mm:ss a" ' "1961-08-29"
hold=holdk
Log(holdk)
Log(hold)
Log($"Value1: ${value1}, Value2: ${value2},Value3: ${value3}"$)
Log("ItemLongClick " & Index)
Log(Value)
Msgbox2Async("Do you Want to delete this Message?", "Delete Conversation", "Yes", "Cancel", "No", Null, True)
Wait For Msgbox_Result (Result As Int)
Log(Result)
If Result = DialogResponse.POSITIVE Then
'Dim rsT As ResultSet
'Starter.oSQL.ExecQuery2("DELETE FROM tbl_Messages WHERE ChatClientName = ?", Array As String(value2))
Starter.OSQL.ExecNonQuery2("DELETE FROM tbl_Messages WHERE Timestamp = ?", Array As String (hold)) 'deletes from DB
clvMessages.RemoveAt(Index)
Return
Else
End If
End Sub
