Android Question How to Launch build in Caclculator

trepdas

Active Member
Licensed User
Longtime User
Hello good b4x people,

I am trying to launch the build in calculator using intent but with no success.
Do I need to declare something in the manifest?

used Erel's example (from 2012) but with no suucess :

B4X: 
Sub Activity_Create(FirstTime As Boolean)
   Dim i As Intent
   i.Initialize("", "")
   i.SetComponent("com.android.calculator2/.Calculator")
   Try
      StartActivity(i)
   Catch
      ToastMessageShow("Calculator app not found.", True)
   End Try
End Sub

log: 
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.android.calculator2/com.android.calculator2.Calculator}; have you declared this activity in your AndroidManifest.xml?
 
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udg

Expert
Licensed User
Longtime User
If you didn't before, read through all of this thread.
Stackoverflow clould be of inspiration too.
 
Upvote 0
J

jantorun

New Member
Licensed User
Longtime User
Hello,

may be a little bit outdated but some years ago I used this with success:

Call Android calculator: 
Sub Calculator
  Dim Cal As Intent
  Dim I As Int
  Dim pm As PackageManager
  Dim packages As List
  Dim Packname As String
  Dim Calculatoranwendung As String
  Cal.Initialize("", "")
  Try
    packages = pm.GetInstalledPackages
    For I = 0 To packages.Size - 1
      Packname = packages.Get(I)
        If Packname.Contains("alculator") = True Then
          Calculatoranwendung = Packname
          Exit
        End If
    Next
    Cal = pm.GetApplicationIntent(Calculatoranwendung)
    StartActivity(Cal)
  Catch
    Msgbox("Calculator not found on System!","Error")
  End Try
End Sub

You can also extend the code
<If Packname.Contains....>
to ask for your favorite calculator installed on your device first and use this one before searching for the default.

Jan
 
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