private void setAppEnabled()

in BasicManagedProfile/Application/src/main/java/com/example/android/basicmanagedprofile/BasicManagedProfileFragment.java [212:254]
35 lines of code
7 McCabe index (conditional complexity)

    private void setAppEnabled(String packageName, boolean enabled) {
        Activity activity = getActivity();
        if (null == activity) {
            return;
        }
        PackageManager packageManager = activity.getPackageManager();
        DevicePolicyManager devicePolicyManager =
                (DevicePolicyManager) activity.getSystemService(Context.DEVICE_POLICY_SERVICE);
        try {
            int packageFlags;
            if(Build.VERSION.SDK_INT < 24){
                //noinspection deprecation
                packageFlags = PackageManager.GET_UNINSTALLED_PACKAGES;
            }else{
                packageFlags = PackageManager.MATCH_UNINSTALLED_PACKAGES;
            }
            ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName,
                    packageFlags);
            // Here, we check the ApplicationInfo of the target app, and see if the flags have
            // ApplicationInfo.FLAG_INSTALLED turned on using bitwise operation.
            if (0 == (applicationInfo.flags & ApplicationInfo.FLAG_INSTALLED)) {
                // If the app is not installed in this profile, we can enable it by
                // DPM.enableSystemApp
                if (enabled) {
                    devicePolicyManager.enableSystemApp(
                            BasicDeviceAdminReceiver.getComponentName(activity), packageName);
                } else {
                    // But we cannot disable the app since it is already disabled
                    Log.e(TAG, "Cannot disable this app: " + packageName);
                    return;
                }
            } else {
                // If the app is already installed, we can enable or disable it by
                // DPM.setApplicationHidden
                devicePolicyManager.setApplicationHidden(
                        BasicDeviceAdminReceiver.getComponentName(activity), packageName, !enabled);
            }
            Toast.makeText(activity, enabled ? R.string.enabled : R.string.disabled,
                    Toast.LENGTH_SHORT).show();
        } catch (PackageManager.NameNotFoundException e) {
            Log.e(TAG, "The app cannot be found: " + packageName, e);
        }
    }