http://example.com
content://settings/secure
intent:#Intent;action=android.settings.MANAGE_UNKNOWN_APP_SOURCES;end
https://f-droid.org/repo/de.szalkowski.activitylauncher_46.apk
intent://settings/#Intent;scheme=android-settings;end
market://details?id=com.android.settings
intent://com.android.settings/#Intent;scheme=android-app;end