How to add missing member from PackageManager?

[Ram]

Using Java i can get the date that the application was installed:

long installed = context.getPackageManager().getPackageInfo("package.name", 0).firstInstallTime;

this member is not available in the Phone PackageManager Basic4android - Phone

how can it be done using B4A?

Thx in advance!

 

[Erel]

You can use the reflection library:

Sub Activity_Create(FirstTime As Boolean)
   Log(DateTime.Date(GetFirstInstallTime("anywheresoftware.b4a.designer")))
End Sub

Sub GetFirstInstallTime(Package As String) As Long
   Dim r As Reflector
   r.Target = r.GetContext
   r.Target = r.RunMethod("getPackageManager")
   r.Target = r.RunMethod3("getPackageInfo", Package, "java.lang.String", 0, "java.lang.int")
   Return r.GetField("firstInstallTime")
End Sub

 

[Ram]

PERFECT! thx much!

 

[hanyelmehy]

When i use

Return r.GetField("firstInstallTime")

i get this error
java.lang.NoSuchFieldException: firstInstallTime

any idea
Thank you:sign0085:

 

[stevel05]

From the documents firstInstallTime requires Android API 9 (2.3 Gingerbread), that could be your problem.

 

[hanyelmehy]

Thank you for your help , yes this was the problem