Set default Home app dynamically.

Question

Can I set dynamically within an activity the preferred/default application that's to be launched when I push the Home key? If that's not possible, can I at least reset current defaults so that the chooser window re-appears? I tried to implement the latter by calling PackageManager.clearPackagePreferredActivities("com.android.launcher"), but that doesn't seem to do it(I gave my activity SET_PREFERRED_APPLICATIONS permission).

Answer 1

Can I set dynamically within an activity the preferred/default application that's to be launched when I push the Home key?

No. There is no exposed API for this.

If that's not possible, can I at least reset current defaults so that the chooser window re-appears?

Only if you are implementing the home screen that is the current default.

I tried to implement the latter by calling PackageManager.clearPackagePreferredActivities("com.android.launcher")

As the documentation for that method states, "An application can only clear its own package(s).".