Android Question Musical notation

[T201016]

Hello all,
while testing "musical notation" -
An error an ocurred in sub: abcsongs_calljavascript (java line:123).

A Webview method was called on thread 'JavaBridge'. All Webview methods must be called on the same thread.

'Javascript injection to call JS functions
Private Sub CallJavaScript(WV As WebView, JSString As String)
    WV.LoadUrl(JSDomain & JSString)
End Sub

'JS Calls
Sub Load(FilePath As String,FileName As String)
    Loaded = False
    Loading = True
    Dim FileData As String = File.ReadString(FilePath,FileName)
    Dim FileArr() As Byte = BC.StringToBytes(FileData,"UTF-8")
    Dim JSString As String = "loadFile(" &SU.EncodeBase64(FileArr) & ")"
    CallJavaScript(WebView1, JSString)
End Sub

In this arrangement, the musical score is not displayed in any way.

do you have any idea for a solution?

 

[T201016]

Welcome back,

Interested in the example of the Stevel05 project - ABC4jInline,

this thought occurred to me -
is there another way to get the value of the Url variable, see: Sub WebView1_OverrideUrl (Url As String)
than pressing "download midi" in hyperlink?

I know the "renderSong" function is responsible for creating the hyperlink:

'Convert the song to a byte array so we can encode it

Dim SongArr () As Byte = BC.StringToBytes (Score.ToString, "UTF-8")

Dim JSString As String = "renderSong ('" & SU.EncodeBase64 (SongArr) & "'," & ParserParams & "," & PrinterParams & "," & RenderParams & ")"

CallJavaScript (WebView1, JSString)

Certainly this would require modification in the library sources - (abcjs_basic_1.10-min.js)
However, I would like to replace the hyperlink with a graphic button, for example, some example in B4A.

Sub WebView1_OverrideUrl (Url As String) As Boolean


Dim SU As StringUtils

    Dim StrData As String

    Dim buffer () As Byte

    Dim out As OutputStream


    MediaPlayer1.Initialize 'Set up media player

    StrData = Url.Replace ("data: audio / midi,", "") 'Strip off the beginning bit

    StrData = SU.DecodeUrl (StrData, "ISO-8859-1") 'Decode the url

    buffer = StrData.GetBytes ("ISO-8859-1") 'Change to byte array

    'Save the file to temp.mid

    out = File.OpenOutput (File.DirRootExternal & "/ Download", "temp.mp3", False)

    out.WriteBytes (buffer, 0, buffer.Length)

    out.Close

    'Play the file

MediaPlayer1.Load (File.DirRootExternal & "/ Download", "temp.mp3")

    MediaPlayer1.Play

Return True

End Sub