Android :: How To Check Encoding In Java
Nov 19, 2010
I am facing a problem about encoding.
For example,
I have a message in xml format encoding is "UTF-8".
CODE:.........
Now, this message are supporting multiple language.
Traditional Chinese (big5), Simple Chinese (gb), English (utf-8)
And it will only change the encoding in specific fields.
For example (Traditional Chinese),
CODE:..........
Only "蘋果" and "橙" are using big5, "<product_name>" and "</product_name>" stills in use utf-8.
<price>1.3</price> and <price>1.2</price> are using utf-8.
How do I know which word is using different encoding?
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Aug 4, 2010
This should be simple, but I have tried if statements checking for null values and also ones checking the .length of it:
CODE:........
But it doesn't detect nothing was entered.
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Jan 9, 2010
I am creating an application which retrieves images from the web. In case the image cannot be retrieved another local image should be used.
While trying to execute the following lines:
CODE:................
The line if(drawable.equals(null)) throws an exception if drawable is null.
Does anyone know how should the value of drawable be checked in order not to throw an exception in case it is null and retrieve the local image (execute drawable = getRandomDrawable())?
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Jul 8, 2010
I'm doing Major Project on my final year and I'm very new to Android plus I;m not good at codings. I need help with my login page.
I've created something like a database connection java file which is this:
CODE:.......
I've already created a database for users using SQLite. The database name is Users and the table is called User. The records inside the table are Username, Password, LastName, FirstName. I've inserted one user's info into the database. The problem is I do not know whether my UserDB.java is correct.
And I've also created login.java. Hardcoded Login page:
CODE:.........
So I want to know how I should apply the database connection on the login.java. Should I insert database connection something like db.Open();? I studied ASP.Net a few months back and I kind of forget most of what I've learnt. So how should I open the database connection on login.java and how to check with database whether the user enters the right username and password?
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May 28, 2010
I have started to work with the WebView component of Android Platform, but the API to load data to the component is confusing me, because it includes a parameter with a encoding. In both methods: public void loadData (String data, String mimeType, String encoding); public void loadDataWithBaseURL (String baseUrl, String data, String mimeType, String encoding, String historyUrl); you have to specify an encoding. In both cases, the API documentation says that is is the encodign of the data (data parameter). Well, as know, if you provide data as a String object, the String is internally stored in UTF-16 (unicode). To get a String object from a external source, you need to specify the external source encoding to convert it to UTF-16 and get the String internal representation (String(byte[] data, String encoding)). So, at this moment, when you have an String instance, everything from the original source has been converted to UTF-16. So, why do you need to specify an encoding if you are providing the data as a String object?
I don't know the internal implementation of WebKit, but let's suppose that, WebKit has a method, to render a source, providing as content an InputStream and a default encoding. Well, as I know, when you process a HTML page, you use the default encoding to read the HTML characters, and if you find a <meta> tag specifing a different encoding, from that moment, you have to use the new encoding to decode the characters of the HTML page. But what happens if you supply a HTML page that contains this <meta> tag: <meta HTTP-EQUIV="content-type" CONTENT="text/html; charset=ISO-8859-1"/> using one of the methods specified at the top of this post, how are you going to read ISO-8859-1 encoding from a String that it is in UTF-16 encoding? if the WebKit filtering this <meta> tags, and doesn't taking in account the encoding specified in this tag? Well, all of this is very confusing for me, because I don't understand why the API includes this encoding parameter. I also don't know if the <meta> encoding tags are filtered when the source is provided as a String? Can anyone solve my doubts?
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Aug 24, 2010
I'm working on an application using the SMS apis for android. The receiving end is an embedded unit that only supports 7-bit encoded SMS and the string I'm sending consists only of symbols from this particular alphabet which makes you think that Android is going to send it encoded as 7 bit. But that is not the case.Therefore I'm searching for a way to specify what encoding to use. See below for what my code looks like today. The method gsm7BitPackedToString turns a byte-array to a 7-bit string, i.e. the string only consists of 7-bit compatible characters and is copied from the internal android api. Code...
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Feb 5, 2010
What is the default encoding of android system?
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Mar 15, 2010
Assume I want to write an xml resource file with a a non-europian language, say japanese, thai or chinese-What encodings can I use and what do I have to to to both the xml header and the Writer to makes these work - Also is there an easy way to map a Locale into acceptable encodings
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Apr 8, 2009
I've added one new feature to Opencore & Framework to let them support encoding qcelp. But I found that Eclipse cannot figure out this new feature, e.g.
recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_QCELP);recorder.setAudioEncoder(MediaRecorder.AudioEncoder.QCELP);
Eclipse now does not think RAW_QCELP & QCELP as legal symbols. So, what should I do to update the SDK to pass though this issue? Overwrite its system.img, boot.img or some *.jar packages?
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Mar 3, 2010
I found a problem with GZIP input stream when wrapping InputStream from HttpURLConnection. When the server response with Transfer- Encoding=chunked, Content-Encoding=gzip and Connection=Keep-Alive. The second post always return -1. After digging into the source code, I found the place that could be a bug: InflaterInputStream.java (line 190 to 192) if (inf.needsInput()) { fill(); } Because InflaterInputStream doesn't need more input, it doesn't try to read the end of chunked encoding (0x)(30 0a 0d) that cause the second post to return with -1 every time.
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Mar 24, 2009
I am having a specific problem that is preventing me using the android SDK from work. We are using a MS Proxy here that all internet traffic has to go through. The problem seems to be when the emulator is trying to access a site that uses 'Transfer-Encoding: chunked' If I attempt to download www.nds.com (no chunked encoding) into the browser, it works fine. However if I try to go to www.google.com (uses chunked encoding), the browser fails with the message: can't determine content length, and client wants to keep connection opened My feeling (and I'm no expert in this area) is that the underlying code managing the communication through the proxy is not dealing with the null terminator on the chunk encoded response when the connection to the proxy is being kept open? Does anyone have any experience in this area? Is the source to the emulator available so I can try and understand what is going on here?
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May 20, 2010
My input is a InputStream which contains an XML document. Encoding used in XML is unknown and it is defined in the first line of XML document.
From this InputStream, I want to have all document in a String.
To do this, I use a BufferedInputStream to mark the beginning of the file and start reading first line. I read this first line to get encoding and then I use an InputStreamReader to generate a String with the correct encoding.
It seems that it is not the best way to achieve this goal because it produces an OutOfMemory error.
Any idea, how to do it ? code...
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May 21, 2009
I've got the following row xml file which consists of CheckboxView and TextView;
CODE:............
When the app run, i'm unable to "tick" any of the check boxes...
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Aug 26, 2009
I have two text file, both of them contains Chinese characters, one text file is saved using ANSI encoding, but this file's Chinese characters can not be displayed by htmlviewer on the phone. The Chinese characters in another txt file saved using unicode can be displayed ok by htmlviewer. Do you have any suggestions on this, does Chinese characters using ANSI encoding supported?
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Aug 9, 2010
I'm trying to rip some DVDs from my collection and get them on my phone for a trip that I will be taking. I just tried to convert one 480x880, 30fps, Constant Bitrate @ 100%, MP4, x264. IDK what went wrong but it wouldn't play from my phone but played fine on my Mac. Does anyone have any suggestions?
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Jun 3, 2012
I don't know why but some emails I sent aren't showing properly. If I write something like: "hey, what have you planned for tomorrow"?
It's delivered like this:
=?UTF-8?B?5pS25Yiw5LqM5pak5Zub55uS6ZOB6KeC6Z+z?=
MIME-Version: 1.0
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: base64[code]...
At first I thought it was because of some ROM so I made a clean install of Gingerbread.This didn't fix it so I updated to ICS. Not even changing my written language from Chinese to English worked.
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Aug 10, 2010
I'm able to get AC3 5.1 @ 640kbs to work with my 720p mkv files but the playback skips about every 5 seconds. Other then that It looks and sounds amazing! I've tried encoded to 5.1 FLAC and AAC but it doesn't play at all. Are there any encoding experts out there?
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Jul 3, 2012
I have LG P970 Optimus black. I know this problem is about a lot of devices and a lot of regions. We are using latin alphabet with some special characters. like "ı, ş, �, ğ, �.." when someone sends me a text message with this characters,
It is normally shown in cm7 and its based roms.
It is normally shown in lg roms which are released for turkey
but it is shown like one space in different lg roms.
For fixing it, what can i do. Is it about message apk? or about some libs?
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Apr 23, 2010
It's in the browser settings I have mine on Latin Japanese and unicode are also some other options. I think default is Latin?
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Aug 16, 2010
I'm from Portugal and here we have some accentuated letters like "à á é ç ã õ".
When the system language is set to English and we insert one of these letters the SMS limit falls down from 160 charachters to 70 because it changes the encoding of the SMS .
What I would like to know is if it's possible to come with an hack to force the system to encode the SMS in a particular way so these kind of letters don't cut us 90 characters off the message.
Actually this is a problem in a lot of countries. Spain, France, Portugal, Italy, Brazil, Mexico, Argentina and the list goes on... Any country that speeks a latin language really.
PS: I own a Samsung Galaxy S at the moment
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Sep 2, 2010
Check for system updates doesn't check.
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Sep 23, 2010
I have two questions regarding video recording on the Droid X.
1. What options are there for encoding? On my HTC Hero I can encode in MPEG4 or H.263. What about the Droid X?
2. My friend sent me a video from her Droid X, but I can't hear anything as far as audio in a normal setting. The only way I can pick up anything she's saying is if I max out the Media volume and hold the speaker directly up to my ear. Is there something she's doing wrong when she's recording the video? This has happened twice now.
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Nov 6, 2009
Menu - Settings - Location - Enable GPS satellites
It states that enabling this will "require more battery plus view of sky"
When checked, it states "deselect to conserve battery"
So, the question is, should this be enabled?
I imagine for some applications, knowing your precise location should be useful, especially if the turn-by-turn maps are installed and used.
I'm thinking to deselect this, and selecting it at times when I need it.
So, to check or not to check?
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Apr 12, 2010
I'm compiling using android tools without eclipse.
I compile launching "ant debug" from command line.
I have found many many instructions around the web about how to remove with annoying warning, but I haven't been able to make any of them work.
I've tried -D option, I've tried randomly tweaking build.* files, I've tried exporting an environment variable... nothing.
I guess some of these methods just don't work, and some others would work but I've been doing them incorrectly. Anything is possible and I can't stand it any more: any advice on how to do it?
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May 19, 2010
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
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Mar 16, 2009
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
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Aug 8, 2009
Java packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
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May 25, 2010
I am facing some problems on xml parsing with android. The problem is that the xml from the server comes in "ISO-8859-1" set with setEncoding (I get <?xml version="1.0" encoding="ISO-8859-1"?>) format and the android device seems that its ignoring that encoding. For example this is part of the original xml that comes from the server:
<Result Filename="Pautas para la Present RUP Iteraciones de Construcci.ppt">
<Path>C:Documents and SettingszashaelMy DocumentsPFCRUPPautas para la Presentaci RUP Iteraciones de Construcci.ppt</Path>
<Hostname>computer_1</Hostname>
<IP>192.168.0.5:27960</IP>
<ModDate>01-ene-1601 2:06:34</ModDate>
<Size>33.280 bytes</Size></Result>
And this is what I get on the phone before parsing the xml:
</Result>
<Result Filename="Pautas para la Presentaci RUP Fase Inicio.ppt">
<Path>C:Documents and SettingszashaelMy DocumentsPFCRUPPautas para la Presentaci RUP Fase Inicio.ppt</Path>
<Hostname>computer_1</Hostname>
<IP>192.168.0.5:27960</IP>
<ModDate>01-ene-1601 1:32:06</ModDate>
<Size>26.624 bytes</Size>
</Result>
As you can see there is a problem with the word "presentaci". This is the part of code where I recieve the file, and then send it to the parser:
do { auxMessage = ois.readObject();
if (auxMessage instanceof ComConstants) {
receivedMessage = (ComConstants) auxMessage;
Log.d("Client", "Client has Search Results");
//Charset charset = Charset.forName("ISO-8859-1");
//CharsetDecoder decoder = charset.newDecoder();
//CharsetEncoder encoder = charset.newEncoder();
String test; test = new String(
receivedMessage.fileContent, 0, receivedMessage.okBytes);
if (finalMessage == null) { finalMessage = test;
} else { finalMessage += test;
}
/*try { // Convert a string to ISO-LATIN-1 bytes in a ByteBuffer
// The new ByteBuffer is ready to be read.
ByteBuffer bbuf = encoder.encode(CharBuffer.wrap(finalMessage));
// Convert ISO-LATIN-1 bytes in a ByteBuffer to a character ByteBuffer and then to a string.
// The new ByteBuffer is ready to be read.
CharBuffer cbuf = decoder.decode(bbuf);
String s = cbuf.toString(); finalMessage = s;
} catch (CharacterCodingException e) { }
}*/ } else { Log.d("Client", "Unexpected message " + auxMessage.getClass().getName());
break; } } while (!receivedMessage.lastMessage);
//test encoding
//String s = finalMessage;
//finalMessage = new String(s.getBytes("ISO-8859-1"));
System.out.println("antes de parsear" + finalMessage);
SaxParser sap = new SaxParser(finalMessage);
And this is my parser code:
package citic.android.remoteir;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Iterator;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
public class SaxParser extends DefaultHandler{
@SuppressWarnings("unchecked")
ArrayList myResults;
private String tempVal;
private SearchResult tempResults;
@SuppressWarnings("unchecked")
public SaxParser(String xmlString){
myResults = new ArrayList();
parseDocument(xmlString);
/* In order to test */ printData();
} @SuppressWarnings("unchecked")
public ArrayList getResults(){ return myResults;
} private void parseDocument(String xmlString) {
try { SAXParserFactory spf = SAXParserFactory.newInstance();
spf.setFeature("http://xml.org/sax/features/namespaces",false);
spf.setFeature("http://xml.org/sax/features/namespace-prefixes",true);
SAXParser sp = spf.newSAXParser();
XMLReader xmlReader = sp.getXMLReader();
xmlReader.setContentHandler(this);
StringReader sr = new StringReader(xmlString);
InputSource is = new InputSource(sr);
is.setEncoding("ISO-8859-1");
xmlReader.parse(is);
}catch(SAXException se) { se.printStackTrace();
}catch(ParserConfigurationException pce) {
pce.printStackTrace();
}catch (IOException ie) { ie.printStackTrace();
} }
@SuppressWarnings("unchecked") private void printData(){
System.out.println("No of Results '" + myResults.size() + "'.");
Iterator it = myResults.iterator();
while(it.hasNext()) { System.out.println(((SearchResult) it.next()).toString());
//System.out.println(it.next().toString());
} }
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { tempVal = "";
if(qName.equalsIgnoreCase("Result")) { tempResults = new SearchResult();
tempResults.setName(attributes.getValue("Filename"));
} }
public void characters(char[] ch, int start, int length) throws SAXException {
tempVal = new String(ch,start,length);
} @SuppressWarnings("unchecked")
public void endElement(String uri, String localName, String qName) throws SAXException {
if(qName.equalsIgnoreCase("Result")) { myResults.add(tempResults);
}else if (qName.equalsIgnoreCase("Hostname")) { tempResults.setHostname(tempVal);
}else if (qName.equalsIgnoreCase("IP")) { tempResults.setIpad(tempVal);
}else if (qName.equalsIgnoreCase("Path")) { tempResults.setPath(tempVal);
/*}else if (qName.equalsIgnoreCase("Author")) { tempResults.setHostname(tempVal);
}else if (qName.equalsIgnoreCase("File")) { tempResults.setIpad(tempVal);
*/}else if (qName.equalsIgnoreCase("ModDate")) { tempResults.setModDate(tempVal);
}else if (qName.equalsIgnoreCase("Size")) { tempResults.setSize((tempVal));
} } }
I dont know what to do. I tried setting the string I create after recieving the xml bytes to ISO encoding, but the only thing I got was a "square" instead of " ".
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Feb 11, 2009
I'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
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Aug 16, 2010
I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
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