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Created by magnum on October 09, 2011 19:53:26 Last update: October 09, 2011 19:53:50
#include <stdio.h> #include <stdlib.h> #incl...UNIXguide.net explains this option well: This socket option tells the kernel that even if this port is busy (in the TIME_WAIT state), go ahead and reuse it anyway. If it is busy, but with another state, you will still get an address already in use error. It is useful if your server has been shut down, and then restarted right away while sockets are still active on its port. You should be aware that if any unexpected data comes in, it may confuse your server, but while this is possible, it is not likely. It has been pointed out that "A socket is a 5 tuple (proto, local addr, local port, remote addr, remote port). SO_REUSEADDR just says that you...
Created by magnum on September 25, 2011 21:51:23 Last update: September 26, 2011 20:49:22
A simple socket client in C.
#include <stdio.h> #include <stdlib.h> #incl...
Created by freyo on May 17, 2011 11:13:17 Last update: May 17, 2011 11:13:17
This is an odd-ball content provider in that it doesn't provide database records, but provides a resource as a stream. It can be used to provide media files or XML resources. Start the project with:
tools/android create project --package com.android...Create assets directory and add an XML file ( assets/demo.xml ):
<? xml version="1.0" encoding="UTF-8"?> <people...Edit the layout ( res/layout/main.xml ):
<?xml version="1.0" encoding="utf-8"?> <LinearL...Edit src/com/android/cptest/Dummy.java :
package com.android.cptest; import java.io....Add content provider ( src/com/android/cptest/XmlResource.java ):
package com.android.cptest; import java.io....Update AndroidManifest.xml :
<?xml version="1.0" encoding="utf-8"?> <manifes...Add this section to the end of build.xml :
<target name="-package-resources"> <ech...Build and install:
ant installScreenshot: Remove the Dummy activity ( AndroidManifest.xml ):
<?xml version="1.0" encoding="utf-8"?> <manifes...Create a new project for...
Created by freyo on April 18, 2011 15:08:21 Last update: April 18, 2011 15:12:20
Generate android project
$ ~/android-sdk-linux_86/tools/android create proj...Create XML file res/xml/books.xml :
<?xml version="1.0"?> <catalog> <book id=...Edit layout ( res/layout/main.xml ):
<?xml version="1.0" encoding="utf-8"?> <Lin...Edit code ( src/com/android/xmlres/XMLResource.java ):
package com.android.xmlres; import java.io....Change activity label from app_name to booklist ( AndroidManifest.xml ):
<?xml version="1.0" encoding="utf-8"?> <manifes...Add value for string resource ( res/values/string.xml ):
<?xml version="1.0" encoding="utf-8"?> <resourc...Deploy and test:
Created by Dr. Xi on February 09, 2009 23:14:15 Last update: February 09, 2009 23:14:15
This example demonstrates the general steps in creating a custom Java class loader. Normally a class loader would consult its parent class loader when asked to load a class. If it's not loaded by the parent class loader, then the class loader would try to load the class on its own. This class loader tries to load the requested class on its own first, and delegates to the parent only when a java.lang.SecurityException is thrown (which happens when it tries to load core Java classes such as java.lang.String ). The classes are loaded from CLASSPATH through the getResourceAsStream call. It's important to note that when a class is loaded with a certain class loader, all classes referenced from that class are also loaded through the...