Android Question create bitmap of scrollview

[tsteward]

I want to be able to capture an image of the entire activity, just don't know how.
This activity has one scroll view so it needs to capture what is not on the screen as well.

I have tried this but in only captures what is visible.
Dim x As B4XView = Activity
Dim bmp As B4XBitmap = x.Snapshot

 

[LucaMs]

I hope you don't pretend to get a screenshot that also contains items that are not visible!

 

[tsteward]

I don't pretend anything.
Is there a way to capture the entire activity to a bitmap?

 

[LucaMs]

I don't pretend anything.
Is there a way to capture the entire activity to a bitmap?

Exactly as you did!

 

[tsteward]

Ok is there another way?
To create an image of the whole scroll view?

 

[LucaMs]

Ok is there another way?
To create an image of the whole scroll view?

Dim InternalPanel As B4XView = scv.Panel  '  <--- scv = your ScrollView
Dim xbmp As B4XBitmap = InternalPanel.Snapshot
ImageView1.SetBitmap(xbmp)

 

[tsteward]

I get an error using this code.
It shows on the second line "Dim xbmp As B4XBitmap = InternalPanel.Snapshot"

Error occurred on line: 120 (Main)
java.lang.IllegalArgumentException: width and height must be > 0
at android.graphics.Bitmap.createBitmap(Bitmap.java:1252)
at android.graphics.Bitmap.createBitmap(Bitmap.java:1219)
at android.graphics.Bitmap.createBitmap(Bitmap.java:1169)
at android.graphics.Bitmap.createBitmap(Bitmap.java:1130)
at anywheresoftware.b4a.objects.drawable.CanvasWrapper$BitmapWrapper.InitializeMutable(CanvasWrapper.java:654)
at anywheresoftware.b4a.objects.B4XViewWrapper.Snapshot(B4XViewWrapper.java:324)
at b4a.example.main._signbtn_click(main.java:707)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:180)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:176)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:6663)
at android.view.View.performClickInternal(View.java:6635)
at android.view.View.access$3100(View.java:794)
at android.view.View$PerformClick.run(View.java:26199)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

 

[LucaMs]

Error occurred on line: 120 (Main)
java.lang.IllegalArgumentException: width and height must be > 0


Evidently the ScrollView is empty at that time, so its internal panel has height zero.

 

[tsteward]

I didn't think so. My app only in its early stage but is attached

 

[LucaMs]

I have to search the Geocoder library ...

This one? 2012?
https://www.b4x.com/android/forum/threads/geocoder-library.17115/

 

[tsteward]

I have to search the Geocoder library ...

This one? 2012?
https://www.b4x.com/android/forum/threads/geocoder-library.17115/

yes I believe so. but just comment any geocode out. its not needed for this issue......

 

[LucaMs]

Sub SignBtn_Click
    'ScrollView1.Visible=False
    'SigningPnl.Visible=True
    Dim InternalPanel As B4XView = ScrollView1.Panel  '  <--- scv = your ScrollView
    Log("Internal Panel Height " & InternalPanel.Height)
    Log("Internal Panel Width " & InternalPanel.Width)
    Dim xbmp As B4XBitmap = InternalPanel.Snapshot

Log:

Internal Panel Height 3633
Internal Panel Width -1

 

[LucaMs]

Sub Activity_Create(FirstTime As Boolean)
   'Do not forget to load the layout file created with the visual designer. For example:
   Activity.LoadLayout("main")
   DBFileDir = Starter.rp.GetSafeDirDefaultExternal("") 'File.DirDefaultExternal
  
   ScrollView1.Panel.Width = ScrollView1.Width  '   <------ ADD
   ScrollView1.Panel.LoadLayout("AltLayout")

 

[tsteward]

Well done.
Thank you very much!!!