Italian generare grafici spline

Angelo Messina said:

Buona sera, ho seguito il tuo consiglio per usare la libreria by @Johan Schoeman, se eseguo la demo annessa tutto a posto ma nella mia app
genera un errore
esattamente nelle linea che contiene mlc1.setLineData(2,5)
ho seguito le indicazioni della Demo
ma nulla da fare
ho preso la mia sub e lo inserita nelle demo è funziona

mlc1.Chart_1_Data = Array As Float( 1.8178350925445557 , 0.893185019493103 , 0.8867849707603455 , 0.8851850032806396 , 1.7836799621582031)
mlc1.Chart_2_Data = Array As Float( 1.6577963829040527 , 1.6619549989700317 , 1.677471399307251 , 1.6787924766540527 , 1.6442874670028687)
mlc1.XaxisLables = Array As String("5 Sec.", "7 Sec.", "10 Sec.", "12 Sec.", "15 Sec.")
mlc1.XaxisLabelPosition = "BOTTOM"

sai consigliarmi qualcosa

ecco il log

94 mlc1.setLineData(2,5)

Error occurred on line: 94 (Grafico)
android.content.res.Resources$NotFoundException: Resource ID #0x0
at android.content.res.Resources.getValue(Resources.java:1429)
at android.content.res.Resources.loadXmlResourceParser(Resources.java:2858)
at android.content.res.Resources.getLayout(Resources.java:1209)
at android.view.LayoutInflater.inflate(LayoutInflater.java:412)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.github.mikephil.charting.components.MarkerView.setupLayoutResource(MarkerView.java:39)
at com.github.mikephil.charting.components.MarkerView.<init>(MarkerView.java:29)
at com.github.mikephil.charting.components.MyMarkerView.<init>(MyMarkerView.java:24)
at mpandroidchartwrapper.multiLineChartWrapper.setLineData(multiLineChartWrapper.java:462)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:755)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:345)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:249)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)
at b4a.example.grafico.afterFirstLayout(grafico.java:102)
at b4a.example.grafico.access$000(grafico.java:17)
at b4a.example.grafico$WaitForLayout.run(grafico.java:80)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5534)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750)

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Resource ID #0x0

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1. You can choose any of 4 different pop-up icons in the code by passing the appropriate value (see for eg the code mlc2.MarkerToUse = 2 for the line chart)
2. There are 4 files in the /Objects/res/layout folder of the attached B4A project named custom_marker_view_1, custom_marker_view_2, custom_marker_view_3, and custom_marker_view_4. They need to be included in any project that you develop. Don't change them. They are all set to read only
3. Other than the icon.png file in the /Objects/res/drawable folder of the attached B4A project there are another 4 png images called marker1.png, marker2.png, marker3.png, and marker4.png. These are the markers that are used as pop-ups when you touch a bar / data point. These files are all set to read only. You can add your own marker image as long as what you name/replace your png file marker1.png, marker2.png, marker3.png, or marker4.png and then pass the appropriate value from the B4A project to the library.
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