Android Question check if an app.package is installed without long getting all packages

[peacemaker]

Hi, All

Is any system Android API request to check if some "app.package" is installed ?
Without need to get firstly all packages list of the device, that is sloooow way.

 

[DonManfred]

Without need to get firstly all packages on the device, that is sloooow way.

Why you ARE requesting all packes if you just want to check one?

    Dim pm As PackageManager
    Dim in As Intent
    in = pm.GetApplicationIntent("com.somewhat.package")
    If in.IsInitialized Then
        ' Package is installed
    End If

 

[peacemaker]

Why you ARE requesting all packes if you just want to check one?

Thanks, Don. I just remember that long ago used such search, and seems, there was no way without getting the whole list firstly. Maybe i remember wrong...

 

[DonManfred]

You need to try.
Possible that this is how the packagemanager works.

 

[Erel]

Without need to get firstly all packages list of the device, that is sloooow way.

What is the output of this code (release mode):

Dim n As Long = DateTime.Now
Dim apps As List = pm.GetInstalledPackages
Log(DateTime.Now - n)
Log(apps.Size)

 

[DonManfred]

Not really much here... 109ms for 528 Apps

Logger connected to: RF8MB1RD0XZ
--------- beginning of crash
--------- beginning of main
--------- beginning of system
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
109
528
** Activity (main) Resume **
** Activity (main) Pause event (activity is not paused). **
** Activity (main) Resume **

 

[peacemaker]

What is the output of this code (release mode):

Indeed, Erel, i have remembered now - the process is slow, if each package name is processed anyhow.
The list itself is got fastly: 300 ms for 170 apps.
Thanks for help.

 

[Erel]

While @DonManfred solution is good, it is also not too bad to spend 300ms once if you need to check multiple apps. You can add the items to a B4XSet.