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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 May 17, 2011 08:46:50 Last update: May 17, 2011 08:47:35
When I used AssetManager to open an XML file in a ContentProvider :
getContext().getAssets().openFd("demo.xml");it failed with this exception:
java.io.FileNotFoundException: This file can not b...It turned out that openFd only works for asset files that are not compressed. It works on media files such as .mp3 , .jpg , .wmv etc., which are not compressed during packaging. XML files are compressed by dedault, causing openFd to fail. An Android ticket was opened on this issue. Till that is fixed, the workaround is to add an exclusion in build.xml :
<?xml version="1.0" encoding="UTF-8"?> <pro...
Created by freyo on May 05, 2011 09:00:36 Last update: May 05, 2011 09:07:27
This example uses an Intent with Uri scheme tel: to invoke the phone dialer. Create a new project with:
$ ~/android-sdk-linux_86/tools/android create proj...Update the layout res/layout/main.xml to add a text field and a button:
<?xml version="1.0" encoding="utf-8"?> <LinearL...Update the Java class src/com/android/intenttest/CallPhone.java to handle button click and start the built-in phone dialer with Intent :
package com.android.intenttest; import andr...Update AndroidManifest.xml to add CALL_PHONE permission:
<?xml version="1.0" encoding="utf-8"?> <manifes...Install to the emulator and test:
ant installThe phone dialer will be invoked when you click the "Call" button. So how did this happen? The CallPhone activity creates an Intent with action Intent.ACTION_CALL and Uri tel:<a number> and sends it off to Android. Android starts the activity com.android.phone.OutgoingCallBroadcaster because the intent matches the...
Created by freyo on April 12, 2011 15:13:32 Last update: May 03, 2011 15:20:55
Create new project
$ tools/android create project \ > --package co...Edit res/values/string.xml , add strings for the main screen.
<?xml version="1.0" encoding="utf-8"?> <resourc...Add widgets to main layout ( res/layout/main.xml ).
<?xml version="1.0" encoding="utf-8"?> <LinearL...Edit src/com/android/apkinfo/GetAPKPermissions.java and change contents to:
package com.android.apkinfo; import android...Install the debug package to the emulator:
ant installThe screen should look like: Add display permissions activity. Start by creating a new layout res/layout/display_permissions.xml :
<?xml version="1.0" encoding="utf-8"?> <LinearL...Add the strings used by the new Activity ( res/values/strings.xml ):
<?xml version="1.0" encoding="utf-8"?> <resourc...Add the Display Permissions Activity ( src/com/android/apkinfo/DisplayPermissions.java ):
package com.android.apkinfo; import android...Change src/com/android/apkinfo/GetAPKPermissions.java to invoke the Display Permissions Activity:
package com.android.apkinfo; import android...Declare Display Permissions Activity in AndroidManifest.xml :
<?xml version="1.0" encoding="utf-8"?> <manifes......
Created by freyo on April 21, 2011 10:52:31 Last update: April 21, 2011 10:52:31
The class android.content.Context (of which android.app.Activity is a subclass) provides the methods getPackageCodePath() and getPackageResourcePath() to get the full path of the Android package. Logging lines
Log.d(LOG_TAG, "PackageCodePath: " + getPackageCod...prints
D/HelloWorld( 479): PackageCodePath: /data/app/co...in logcat.
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 September 17, 2010 21:29:47 Last update: September 17, 2010 21:31:43
With JBoss (Tomcat?), the servlet container always appends the default charset ISO-8859-1 to the Content-Type header of a JSP response. For example, if you are using JSP to render PDF and put the following declaration at the top of the JSP:
<%@ page contentType="application/pdf"%>These would be the headers in the HTTP response (notice that charset=ISO-8859-1 was appended to Content-Type ):
HTTP/1.1 200 OK Server: Apache-Coyote/1.1 X-...And the output would be truncated a few bytes before non-ASCII characters were encountered, without any error messages ! Maybe you don't intend to output binary files with JSP, but still your response would be truncated without warning if the page happens to contain any non-ASCII characters (when the charset is the default charset=ISO-8859-1 ). However, if you...
Created by voodoo on July 11, 2009 15:14:55 Last update: July 29, 2010 22:45:48
cURL is a command line tool for transferring files with URL syntax. The main purpose and use for cURL is to automate unattended file transfers or sequences of operations. It's really easy to see HTTP headers with curl:
C:\>curl --head http://www.google.com HTTP/1.0 ...or, headers and page together (dump headers to stdout):
$ curl --dump-header - http://www.google.com HTTP/...Download openssl from openssl.org:
C:\>curl --help Usage: curl [options...] <url> ...
Created by voodoo on July 21, 2010 16:10:47 Last update: July 21, 2010 16:10:47
Google news RSS does not like curl:
C:\> curl --dump-header - -o NUL http://news.googl...Switch the agent to HotJava with the -A option:
C:\> curl -A "HotJava/1.1.2 FCS" --dump-header - -...
Created by nogeek on April 25, 2010 05:09:14 Last update: April 25, 2010 05:10:46
Oracle Web Cache version used:
Oracle Application Server Web Cache 10.1.2.3.0 ...The test page is a simple Struts action sending a URL redirect:
public ActionForward execute(ActionMapping map...Web Cache setup Origin server Host Name Port oas.host 7777 Site Host Name Port URL Path Prefix webcache.host 80 Test results Request directly to the OC4J (Oracle Application Server):
C:\work\testAppWebApp2>curl --dump-header - http:/...Request to Oracle Web Cache:
C:\work\testAppWebApp2>curl --dump-header - http:/...Notice that Oracle Web Cache correctly translated the host name in the header and HTML page. However, the port number remained that of the Oracle App Server.
Created by Fang on September 07, 2009 16:39:37 Last update: September 07, 2009 18:43:04
It's easiest to use the archetype plugin to start a new Maven project. I'll use struts 1 as example since it's not in the built-in archetypes for archetype:generate . Generate a simple webapp with archetype:generate :
C:\work\maven>mvn archetype:generate -DarchetypeAr...It generates a directory structure like this:
struts1app struts1app/pom.xml struts1app/src...with a simple POM:
<project xmlns="http://maven.apache.org/POM/4.0.0"...Create settings.xml in $HOME/.m2 , add Java.net repository for Java EE dependencies:
<?xml version="1.0" encoding="UTF-8"?> <setting...Add Java EE and Struts dependencies in pom.xml . Note that the Java EE dependency has scope provided , meaning that the web app container provides the jars, therefore we don't need to bundle them with our war fie.
<project xmlns="http://maven.apache.org/POM/4.0.0"...Create a directory named java under main , create the Struts form and...
Created by Dr. Xi on December 12, 2007 20:30:01 Last update: December 12, 2007 20:32:23
This is a script to tail a log file through the web browser. It uses AJAX, apache web server, mod_python, UNIX utilities tail (requires the --lines switch) and wc . The log file may reside on the web server or any other host accessible from the web server through SSH. Although it's written in python, it should be easy to port to other languages such as Perl. Apache httpd.conf :
LoadModule python_module modules/mod_python.so ...Python script:
import time, os from os.path import basename ...