Hello, I'm new to Android development and don't realy know about how to use all the given functions.
What I want to do is to build a tool (only a proof of concept) to
manage installation of new packages. The thing is I can't figure out
how to install a new package.
First I added a uses-permission tag with the value
"android.permission.INSTALL_PACKAGES" into my packages manifest file.
I've found the function "installPackage(Uri uri)" inside the
PackageManager class. So I tried to use it this way:
Uri.Builder uribuilder = new Uri.Builder();
uribuilder.scheme("http");
uribuilder.path("//hostname/SamplePackage.apk");
PackageManager pm = getPackageManager();
pm.installPackage(uribuilder.build());
What happens is that my application crashes. Using the debuger I
figured out that a NullPointerException occurs inside the
PackageManager class.
The next way I tried to install a package is using the already
existing "Package Manager". So I created a new Intent to call the
Package Manager and called StartActivity with this Intent:
Uri.Builder uribuilder = new Uri.Builder();
uribuilder.scheme("http");
uribuilder.path("//hostname/SamplePackage.apk");
Intent intent = new Intent(Intent.ACTION_PACKAGE_INSTALL,
uribuilder.build());
startActivity(intent);
But also this method ends with a NullPointerException.
What am I doing wrong? How can I get this job done?
I don't have a real phone to develop on, only the Android emulator.
Maybe the emulator doesn't support this function or this Intent!?
Thanks for help
Lutz
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