programming

Android Splashscreen

rac — Sat, 03 Apr 2010 18:37:18 +0200

Howto implement a splashscreen in android

While working on the easter theme for Frozen Bubble (Frozen Egg => market://search?q=pname:ch.racic.frozenegg) I searched for a way to show a splashscreen while the app was loading.

The first implementation of a splash screen was to start a small activity that shows a splash image for a certain time period and the starts the main activity but this still shows the black screen while loading the main activity.
I remembered that toast messages can be customized and can contain images, thats my second implementation that I want to show to you.
Feel free to comment if you have better ways or ideas how to implement a splashscreen better.

Code listings after the break...

Smartcard

rac — Fri, 13 Feb 2009 12:53:01 +0100

PHP quick Login protect script

rac — Tue, 01 Apr 2008 13:56:15 +0200

<?php
session_start();
 if (!isset($_SESSION['ok']) || $_SESSION['ok'] !== true) {
 if(isset($_POST['login']) && isset($_POST['pass'])) {
   if($_POST['login'] == 'user' && $_POST['pass'] == 'password') {
     $_SESSION['ok'] = true;
     header('Location: '.$_SERVER["php_SELF"].'?' .urlencode(session_name()) . '=' . urlencode(session_id()));
   } else {
     echo 'Login leider falsch.';
     $_SESSION['ok'] = false;
   }
 }
 ?>
 <form method="post">
   Login: <input type="text" name="login" />
   Passwort: <input type="password" name="pass" />

Simple PHP file upload form

rac — Thu, 31 Jan 2008 15:19:31 +0100

Ganz simples Upload script in PHP ohne grosse überprüfungen oder sonstiges...

<?php
// setze time limit auf unendlich
set_time_limit(0);
if($_POST["submit"] == "upload"){
        // Das Formular wurde gesendet
        if($_FILES['file']['error'] != 0) {
                echo "tmp_name = ".$_FILES["file"]["tmp_name"]."<BR>";
                echo "error code: ".$_FILES['file']['error']."<br>";
                die(" The file hasn't arrived the server");
        }
        // kopiere das temporäre file an den richtigen ort
        if(copy($_FILES["file"]["tmp_name"], $_FILES["file"]["name"])) {
                echo "File upload succesful!

PIC Microchip

rac — Mon, 21 Jan 2008 13:22:07 +0100

DemoNtpMessage.java

rac — Tue, 15 Jan 2008 09:49:16 +0100

package hsz.ITDP.rac.uebungen.SNTPclientServer;
 
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
 
 
/**
 * This class represents a NTP message, as specified in RFC 2030.  The message
 * format is compatible with all versions of NTP and SNTP.
 *
 * This class does not support the optional authentication protocol, and
 * ignores the key ID and message digest fields.
 * 
 * For convenience, this class exposes message values as native Java types, not
 * the NTP-specified data formats.  For example, timestamps are
 

SNTPclient.java

rac — Tue, 15 Jan 2008 09:46:25 +0100

package hsz.ITDP.rac.uebungen.SNTPclientServer;
 
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.text.DecimalFormat;
import java.util.*;
 
public class SNTPclient {
 
        /**
         * @param args
         */
        public static void main(String[] args) {
                String  sntpHost = "lisa.hsz-t.ch";
                int             sntpPort = 123;
 
                try { 
                      byte[] data = generatePacket(); 

echoserverThreaded.java

rac — Tue, 15 Jan 2008 09:40:06 +0100

package hsz.ITDP.rac.uebungen.echoClientSrv;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
 
 
public class echoserverThreaded implements Runnable {
        private Socket sock = null;
        public echoserverThreaded(Socket sockin) {
                System.out.println("create thread for "+sockin.getRemoteSocketAddress());
                this.sock = sockin;
        }
        public void run() {

echoclient.java

rac — Tue, 15 Jan 2008 09:36:56 +0100

package hsz.ITDP.rac.uebungen.echoClientSrv;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
 
 
public class echoclient {
public static void main(String[] args) throws IOException {
        BufferedReader in = null;
        PrintWriter out = null;
        BufferedReader user = null;
        Socket sock = null;
        String srvIP = "localhost"; //args[0];
        int srvPort = 9998;  // Integer.parseInt(args[1]);
        
        try {

Project NumGuess

rac — Mon, 14 Jan 2008 15:37:36 +0100

Unsere Aufgabe ist es eine Applikation in PHP/Ajax zu schreiben, die eine Zahl zufällig generiert und mit Benutzereingaben Vergleicht. Durch vergleichen auf dem Server wird dem Benutzer als Antwort zur eingegebenen Zahl "too low", "too high" oder "right" zurückgegeben.

Microsoft Windows Mouse Simulation

rac — Wed, 09 Jan 2008 10:24:16 +0100

msim.c
Wegen einem Bug im hidhlight modul, bitte im code unten alle stellen mit 0a durch ein einfaches 0 ersetzen.

#include <windows.h>
int main(void)
{
        ::CreateMutex( NULL, TRUE, TEXT("NAME-088FA2340-B10234-12343-B2346-0070967"));
        if(GetLastError() == ERROR_ALREADY_EXISTS)
                exit(0a);
        POINT point;
        for(;;) {
                GetCursorPos(&point);
                if((point.x == 0a) && (point.y == 0a))
                        exit(1);
                SetCursorPos(point.x+1,point.y+1); 
                SetCursorPos(point.x,point.y); 
                Sleep(60000); //Sleep for 1 minute
        }
        return 0a;
}

Make

rac — Tue, 08 Jan 2008 09:08:37 +0100

Variabeln

CC = C Compiler
CPP = C Präprozessor
CXX = C++ Compiler
CURDIR = Aktuelles Verzeichnis

Parameter

Anzeigen aller Standardmässigen Variabeln und Regeln

make -p

Mehrere (5) Prozesse kreieren um zu Kompilieren

make -j 5

Makefile Angeben (ansonsten muss dass Makefile "Makefile" heissen, damit einfach make eingegeben werden kann)

make -f theMakeFile

Hilfetools

makedepend

Errechnet die Abhängikeiten im Makefile

Sample Makefiles

Auf einem Debian System mit pthread library

 all: tankd.c

ANT

rac — Sat, 05 Jan 2008 16:21:28 +0100

Aufbau von Ant-Files

Das Ant File heisst immer:

build.xml

Hällt man sich daran braucht man kein AntFile anzugeben.

project	Ant Files beginnen immer mit dem <project> Tag. Dieser geht über das ganze File und hat den Parameter default. Wird nichts anderes angegeben führt er das Target mit dem im default Parameter angegebenen Namen aus.
target	Der Target Tag ist im Projet enthalten. Er hat den Parameter name. Dieser Wert ist frei wählbar.
echo	Gibt die Message im Parameter message aus.

<project default="nina">
 <target name="franziska">

Load a big CSV file into a MySQL DB

rac — Wed, 02 Jan 2008 13:16:14 +0100

Used Libraries

mysql-connector-java-5.1.5-bin.jar

CSV2SQLImporter.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
 
class CSV2SQLImporter
{
        Connection conn = null;
    public CSV2SQLImporter()
    {
    }
 
    public boolean connect(String db_connect_str, 
  String db_userid, String db_password)
    {
        Connection conntmp;
        try 
        {
            Class.forName(  