Grand opening ;)

Now I create this blog. Looks fine, isn't it?

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Installing and using a free GeoIP database

Today's article is about install and update GeoIP database on Debian-like systems, integrate it with PHP and Apache. To install GeoIP on Debian 8 or Ubuntu 16.04 simple run this command: apt-get install geoip-database geoip-database-extra Now you have a GeoIP installed. But databases are obsolete. To update GeoIP databases, find data files on your system: dpkg -L geoip-database | grep GeoIP.dat You get a path like /usr/share/GeoIP/ Go to that directory and download updates: wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz Unpack files with replace old: gzip -df *.gz Rename GeoLiteCity.dat to GeoIPCity.dat: mv -f GeoLiteCity.dat GeoIPCity.dat You can put all these commands into one bash file (e.g. geoipupd.sh ) to run as single command: #!/bin/bash cd /usr/share/GeoIP/ wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz wget ...
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Create custom Spinner on ActionBar

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Last days I start working on new Android app, working name is PassGen (Password generator) and plan to place spinner onto the ActionBar. Since API 21 ActionBar replaced to more flexible Toolbar with you can put widgets similar to regular layout. I plan to use spinner but by default it look not fine for me. Starting from modify colors, my mind moving me to add second line and icon to each item. Finally, it looks like this: Almost changes are in XML files. In MainActivity: < android.support.v7.widget.Toolbar android :id= "@+id/toolbar" android :layout_width= "match_parent" android :background= "@color/colorPrimaryDark" android :layout_height= "?attr/actionBarSize" > < Spinner android :id= "@+id/spinner" style= "@style/SpinnerTheme" android :layout_width= "wrap_content" android :layout_height= "wrap_content" android :layout_marginEnd= ...
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Android: Activity vs AppCompatActivity

By default, Android Studio create new Activity based by AppCompatActivity . In this way, additional modules, such as Android support library will added to the project. But in many cases you can use the basic Activity class. You can choose Activity insted of AppCompatActivity if: target API is 21 or higher (Android 5+)  target API is 17 or higher (Android 4.2+) and you do not use Matherial Design  target API is 15 or higher (Android 4.03+) and you do not use Nested Fragments and Matherial Design. In last case, if you want to use Nested Fragments but don't want Matherial Design, you can use FragmentActivity .
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