Android Question ZoomImageView - Error

artsoft · Jun 3, 2021

Hi all!

I need a ZoomImageView which is not provided by the designer.

I need it while runtime:

B4X:

    Dim svIV As ZoomImageView
    svIV.Initialize (Me, "showImage")
    svIV.SetBitmap(b)
    svIV.tag = t
    sv.Panel.AddView(svIV.ImageView, 10dip, yPos, w, h)

Additional notes:

- b is a valid bitmap
- t is a valid string
- sv is a valid ScrollView
- w and h are valid dimensions

I got an error in this line...

B4X:

    svIV.SetBitmap(b)

... with this log info:

B4X:

 ...
Error occurred on line: 91 (ZoomImageView)
java.lang.RuntimeException: Object should first be initialized (B4XView).
    at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:67)
    at anywheresoftware.b4a.objects.B4XViewWrapper.asViewWrapper(B4XViewWrapper.java:89)
    at anywheresoftware.b4a.objects.B4XViewWrapper.SetBitmap(B4XViewWrapper.java:377)
    at de.padlockblue.manager.zoomimageview._setbitmap(zoomimageview.java:136)
    at java.lang.reflect.Method.invoke(Native Method)
 ...

If I use a normal ImageView instance, then there is no error.

Where is my mistake here?

Thanks for any help in advance.
Regards ARTsoft

Erel · Jun 3, 2021

[B4X] I need 100 <custom view here>s. How to add programmatically?

artsoft · Jun 3, 2021

Great Erel!

Yes, I see this mechanism now within the example code which comes also with the ZoomImageView lib.

Thanks a lot.
Best regards

artsoft · Jun 3, 2021

Erel said:
[B4X] I need 100 <custom view here>s. How to add programmatically?

I have to ask a question to this.

I try to add now some instances of a ZoomImageView with this code (is called in my case two times):

B4X:

    Activity.LoadLayout("zi_view")
    
    ZIV.SetBitmap(b)
    ZIV.tag = t
    ZIV.mBase.Enabled = True
    ZIV.mBase.Visible = True
    ZIV.mBase.Width = w
    ZIV.mBase.Height = h
    
    sv.Panel.AddView(ZIV.ImageView, 10dip, yPos, w, h)

While trying to add the view to my ScrollView, now I get this exception:

B4X:

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
    at android.view.ViewGroup.addViewInner(ViewGroup.java:5274)
    at android.view.ViewGroup.addView(ViewGroup.java:5089)
    at android.view.ViewGroup.addView(ViewGroup.java:5061)
    at anywheresoftware.b4a.objects.PanelWrapper.AddView(PanelWrapper.java:65)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:777)

The layout "zi_view" only contains 1 instance of a ZoomImageView and the parent there is the Activity itself.

Where is my mistake currently?

Thx and regards
ARTsoft

Erel · Jun 3, 2021

artsoft said:
Where is my mistake currently?

In most cases it is a mistake to use ScrollView. Much simpler to use xCustomListView.

You need to add ZIV.mBase, not ZIV.ImageView.

DonManfred · Jun 4, 2021

artsoft said:
I need it while runtime

This is a mistake.

[B4X] I need 100 <custom view here>s. How to add programmatically?

Custom views are designed to be added with the designer. It is however very simple to create a layout file with the custom view and load it multiple times. Tip: remove the call to AutoScaleAll from the designer script. Complete example: Sub Globals Private B4XSwitch1 As B4XSwitch End...

www.b4x.com

Android Question ZoomImageView - Error

artsoft

Active Member

Erel

B4X founder

artsoft

Active Member

artsoft

Active Member

Erel

B4X founder

DonManfred

Expert

[B4X] I need 100 <custom view here>s. How to add programmatically?

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Android Question ZoomImageView - Error

artsoft

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artsoft

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artsoft

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Erel

B4X founder

DonManfred

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[B4X] I need 100 <custom view here>s. How to add programmatically?

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