B4A Library [Class] AnotherDatePicker - A simple "web style" date picker

Erel · Mar 21, 2013

This is an old version. Latest version is included in XUI Views: https://www.b4x.com/android/forum/threads/100836/#content

AnotherDatePicker is an inline date picker:

The advantage of this class over the built-in dialog (DateDialog from the Dialogs library) is that you can easily customize it as needed.

Most of the layout is created with the visual designer and designer script.

ADP.GetDate returns the selected date.

The months names and days names are based on the device locale.

In order to use this class in your code you should add AnotherDatePicker class, reference DateUtils library and add DatePicker layout file to the Files tab.

Starting from v2.0, ADP should be added as a custom view from the designer:

v2.0 - Better support for visual designer and more configurable options (including first day of week).
v1.11 - Fixes an issue with SetDate that is called before the view is ready.
v1.10 - Adds a Closed event. See the attached example.

NeoTechni · Aug 31, 2013

I'm getting

java.lang.ClassNotFoundException: anywheresoftware.b4a.objects.CustomViewWrapper
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:204)
at java.lang.Class.forName(Class.java:169)
at anywheresoftware.b4a.DynamicBuilder.build(DynamicBuilder.java:17)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:233)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:273)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:123)
at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:190)
at b4a.example.main._activity_create(main.java:235)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at b4a.example.main.afterFirstLayout(main.java:89)
at b4a.example.main.access$100(main.java:16)
at b4a.example.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: anywheresoftware/b4a/objects/CustomViewWrapper
... 24 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "anywheresoftware.b4a.objects.CustomViewWrapper" on path: DexPathList[[zip file "/data/app/b4a.example-2.apk"],nativeLibraryDirectories=[/data/app-lib/b4a.example-2, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
... 24 more
main_activity_create (java line: 235)
java.lang.RuntimeException: java.lang.ClassNotFoundException: anywheresoftware.b4a.objects.CustomViewWrapper
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:140)
at anywheresoftware.b4a.objects.ActivityWrapper.LoadLayout(ActivityWrapper.java:190)
at b4a.example.main._activity_create(main.java:235)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at b4a.example.main.afterFirstLayout(main.java:89)
at b4a.example.main.access$100(main.java:16)
at b4a.example.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: anywheresoftware.b4a.objects.CustomViewWrapper
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:204)
at java.lang.Class.forName(Class.java:169)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:240)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayoutHelper(LayoutBuilder.java:273)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:123)
... 17 more
Caused by: java.lang.NoClassDefFoundError: anywheresoftware/b4a/objects/CustomViewWrapper
... 23 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "anywheresoftware.b4a.objects.CustomViewWrapper" on path: DexPathList[[zip file "/data/app/b4a.example-2.apk"],nativeLibraryDirectories=[/data/app-lib/b4a.example-2, /vendor/lib, /system/lib]]

at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
... 23 more
java.lang.RuntimeException: java.lang.ClassNotFoundException: anywheresoftware.b4a.objects.CustomViewWrapper

Erel · Sep 1, 2013

Which version of Basic4android are you using?

NeoTechni · Sep 1, 2013

Erel · Sep 1, 2013

This class requires v2.7 as it is a custom view with designer support (a feature added in v2.7).

yttrium · Oct 16, 2013

Hey Erel, any idea on how to disable dates past the current date? For example, if today is the 16th of October, I don't want users to be able to select any dates past the 16th.

Erel · Oct 16, 2013

The simplest solution is to check the chosen date and if it is in the future you show a message and ask to choose again.

You can also go over the code, understand it, and change it so it will not show future dates.

yttrium · Oct 16, 2013

For the first case, how could I determine that? DateUtils.PeriodBetweenInDays only returns positive integers.

Should I just compare their tick values? And if so, how can I convert a date (say, 10/16/2013) to ticks?

Erel · Oct 17, 2013

The chosen date is passed to the Closed event:

B4X:

Sub ADP_Closed (Cancelled As Boolean, Date As Long)
   If Cancelled = False And Date > DateTime.Now Then
     'future time
   End If
End Sub

netsistemas · Nov 4, 2013

how to set the fitst day MONDAY (in spain, the first day on week is MONDAY and the last is SUNDAY).?

netsistemas · Nov 4, 2013

ok. i view: http://www.b4x.com/android/forum/threads/german-datepicker.29401/#post170622

enrico · Dec 3, 2013

I'm trying to add this date picker in a project.
I had a label with the date (pic0), but if I add the date picker with :

adpDate.Initialize(Me, "adpDate")
adpDate.AddToActivity(Activity, lblDate)

the label becomes white (pic1 & pic 2) and I don't understand how to keep it transparent

Erel · Dec 4, 2013

Can you upload your project (File - Export as zip)?

enrico · Dec 4, 2013

I couldn't replicate the problem in a clean project.
Surely it depends on some of my layouts.
I have not been able to solve it and my workaround is to delete this line :

Lbl.Background = et.Background

in the class module.

Another thing is that when I close date picker (with cancel or today), black boxes remains in the buttons place (as you can see in screenshot)

shaffnert03 · Dec 8, 2013

Another problem to consider while working through this. If I try to call the setdate function before I've manually opened and closed the date picker, I hit several unitialized variables (targetLabel, Years, Months) and it fails. This is true even though I've initialized the date picker in my code. Is there a fix for this or something I need to do to avoid it?

Erel · Dec 8, 2013

The problem happens because there is a call to AddToActivity in DesignerCreateView that is done with CallSubDelayed. It must use CallSubDelayed because it is not possible to load a layout file while a file is being loaded.

The solution is to use CallSubDelayed in your code:

B4X:

Sub Activity_Create(FirstTime As Boolean)
   Activity.LoadLayout("1")
   CallSubDelayed(Me, "SetDate")
End Sub

Sub SetDate
   ADP.SetDate(DateTime.Now, True)
End Sub

enrico · Dec 9, 2013

No advice about this problem?

Erel · Dec 10, 2013

You will need to upload code that reproduces it.

enrico · Dec 10, 2013

Erel said:
You will need to upload code that reproduces it.

I'm thinking if it happens only with the emulator

Erel · Dec 10, 2013

The label background is indeed set to look like an EditText. You can remove this line if you want it to look differently.

JTmartins · Dec 15, 2013

Hello,

Been playing with this class and came across this problem

in my tablet the label with the date apears correctly with 2013/12/18, just as I want, however in my phone the date in the label shows as 2013/12/18 00:00:00.

but this only happens in my app. The sample works OK on the phone and on the tablet

Why is the time coming up only on the phone ? (althoug I do understand that the time is part of the string)

Tablet : Android 4.03
Phone : 4.1.1

B4X:

Log("Cancelled = " & Cancelled & ", Date = " & DateUtils.TicksToString(Date))


    DateTime.DateFormat = "yyyy/MM/dd"
    Label1.Text= DateUtils.TicksToString(Date)

B4A Library [Class] AnotherDatePicker - A simple "web style" date picker

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