Android Question Launching a different launcher

joneden · Mar 20, 2014

Hi All,

I'm have an app that runs as a launcher with a kiosk mode. Occasionally though I need to exit and load the original launcher (in this case it's the Trebuchet launcher). I use the code below and every time the intent is not initialized.

B4X:

    Dim objPackageManager As PackageManager
    Dim objIntent As Intent
    objIntent = objPackageManager.GetApplicationIntent ("com.cyanogenmod.trebuchet")
    StartActivity(objIntent)

If I change trebuchet to filemanager that works fine to start the filemanager app.

So obviously something is different for launchers.

Any suggestions?

Regards

Jon

Erel · Mar 20, 2014

This code lists all the applications that can be "home" applications:

B4X:

Dim pm As PackageManager
Dim i As Intent
i.Initialize(i.ACTION_MAIN, "")
i.AddCategory("android.intent.category.HOME")
Log(pm.QueryIntentActivities(i))

joneden · Mar 20, 2014

Thanks Erel,

That lists the trebuchet launcher and my own launcher as expected however I still have the issue whereby I get an object not initialized error on the StartActivity line:

java.lang.RuntimeException: Object should first be initialized (Intent).

Is there an alternate way of launching an app?

Regards

Jon

Erel · Mar 20, 2014

Don't use GetApplicationIntent. You should instead get the required information from QueryIntentActivities:
http://www.b4x.com/search?query=PackageManager.QueryIntentActivities

joneden · Mar 20, 2014

Thanks Erel, I'm using that and it works - many thanks.

Android Question Launching a different launcher

joneden

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Erel

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joneden

Active Member

Erel

B4X founder

joneden

Active Member

Android Question Launching a different launcher

joneden

Active Member

Erel

B4X founder

joneden

Active Member

Erel

B4X founder

joneden

Active Member

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