PackageManager packageManager = getPackageManager(); ApplicationInfo applicationInfo = packageManager.getApplicationInfo("com.example.myapp", 0);
PackageManager packageManager = getPackageManager(); try { packageManager.getPackageInfo("com.example.myapp", PackageManager.GET_ACTIVITIES); } catch (PackageManager.NameNotFoundException e) { // package is not installed }This code checks if the package with the package name "com.example.myapp" is installed on the device. If the package is not found, a NameNotFoundException is thrown. By using the getPackageManager method, we can determine package library by retrieving information about the installed packages on the device, checking if a package is installed or not. This can be useful in cases where our app depends on specific packages or libraries and we need to ensure that they are present on the device.