Android :: Add Data To Xml File Dynamically?
Oct 1, 2010I am new to android.What i did is i am creating a xml file with some data.Now i need to add some additional data to existing xml file dynamically.How can i done this..
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Android :: Dynamically Loading JAR File At Runtime
Mar 18, 2009I am storing the required test.jar file in the /sdcard. I want to load it dynamically at runtime and want to execute a function xyz() resides in that. For this purpose I had written following code:
But got ClassCastException : dalvik.system.PathClassLoader
Following is my code ,
import java.io.File; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.net.URL; import java.net.URLClassLoader;
import android.app.Activity; import android.os.Bundle; import android.util.Log;
public class Collabera extends Activity {
/** Called when the activity is first created. */
private static final Class[] parameters = new Class[] { URL.class };
public static void loadURLClass(String classPathURL) throws IOException {
File f = new File(classPathURL);
URL url = f.toURL();
URLClassLoader systemLoader = (URLClassLoader) ClassLoader.getSystemClassLoader();
Class systemLoaderClass = URLClassLoader.class;
try { Method method = systemLoaderClass.getDeclaredMethod("addURL", parameters);
method.setAccessible(true);
method.invoke(systemLoader, new Object[] { url });
} catch (Throwable t) { t.printStackTrace();
throw new IOException( "Error, could not add URL to system classloader");
} }
@Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.i("See","**************Before Loading Class Path**************");
try { Class.forName("test.Test1");
} catch (ClassNotFoundException e) { System.out.println(" Test Class Not Found ....");
} Log.i("See","**************After Loading Class Path**************");
try { loadURLClass("//sdcard//test.jar");
Class c = Class.forName("test.Test1");
Log.i("See"," Test Class Found ....");
Method method = c.getMethod("xyz", null);
Object o = c.newInstance();
String s = (String) method.invoke(o);
Log.i("See","Got method: " + s);
} catch (ClassNotFoundException e) { System.out.println(" Test Class Not Found ....");
} catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace();
} } }
Android :: Getting Maps To Accept A Dynamically Generated KML File
Mar 18, 2010I have a button that launches the google maps app on my device via an intent. I want to be able to pass it a php page that generates a KML file.
I have done this on a website before using the googlemaps api in JS - but it doesn't seem to work on Android.
My php file is as follows;
CODE:..............
Launching with:
CODE:.................
It launches maps, finds the file - but won't display it 'because it contains errors'.
Is this just not possible, or are there other ways to construct the intent that might work?
Android :: Setup Background Of A TextView Dynamically From Xml File?
Oct 10, 2010I have an XMl file like below which I will use to set background for Textview:
row.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
The above Xml I will set as background for TextView in main.xml as below:
main.xml
<TextView
android:id="@+id/rowtext3"
android:text="Availablity"
android:layout_height="25px"
android:layout_width="60px"
android:textSize="10px"
android:textStyle="bold"
android:textColor="@color/black"
android:gravity="center"
android:background="@drawable/row"/>
But I want this to do from code rather than Xml.I have done everything that I have done in Xml like font,width,Height,font dynamically through code , but not able to set Background that I mentioned in Xml file . How can we set content of Xml file as background to textview similar to how we set background as XML in main.xml.
In the code I have done like this:
t1=new TextView(this);
t1.setText(ed1.getText());
t1.setHeight(25);
t1.setWidth(60);
t1.setTextSize(10);
But I didn't find how to set background i.e. how to set XML content as background?
Android :: Dynamically Build Data For ExpandableListView?
May 3, 2010I'm using "ExpandableListView" in my application to display some options that . I need a way to build automatically the information to show when a group is expanded as the information might be different each time the group is expanded.
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May 26, 2009I'm trying to dynamically load a jar file, then load the classes inside the jar. The code is simple but I keep getting ClassNotFind exception. The class is in the jar. How can I figure out what is wrong? code...
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Nov 9, 2010I have a use case in my application, where after certain point, I need to associate an data with an activity. So whenever an intent with an action and the data type is fired, my activity can be opened. I know that it is possible to associate a data type with an activity statically via AndroidManifest.xml.
Is it possible to register the data type for an activity dynamically and programatically?
Android :: Unable To Play File When Set Data Source To Sd Card File
Apr 13, 2009I am trying to play file which is stored in SDCARD in emulator. I have Linux O/S. So i need to provide command in run configuration. I am providing following parameter.
-sdcard /usr/android/sdcard/mysdcard.iso -audio oss [i]
The following is my code to play file.
try { mMediaPlayer.setDataSource("/sdcard/test_cbr.mp3"); mMediaPlayer.prepare(); // Giving error. mMediaPlayer.start(); }
Android :: Is It Efficient To Use Text File Or XML File To Store Static Data
Jul 31, 2009I have some reference data in a text file (~5MB) that I want to use with might android application.The file is of the format:
1|a|This is line 1a
1|b|This is line 1b
2|a|This is line 2a
2|b|This is line 2b
2|c|This is line 2c
What I want to know is the most efficient way (less memory, fast, size etc.) to use this file within my application.
a.) Should I save the file as a raw resource and open and read the whole file whenever I need a certain line.
b.) Should I convert the file to XML and use XPath to query the file when ever I need to look up a value
<!--sample XML -->
<data>
<line number="1">
<entry name="a">This is line 1 a</entry>
</line>
</data>
c.) Should I just copy & paste the whole file as a static string array in the application and use that.
[EDIT] I will also need to search this file and jump to arbitrary keywords e.g. "line 1a".
Android :: Copy File From Sdcard To Package Filesystem - Data - Data - Packagename - Files
Apr 14, 2010Is it possible to copy a file located on the sdcard to a package's internal filesytem located at /data/data/packagename/files/ folder?
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Mar 29, 2009I am saving an image using openFileOutput and now i want to use this image in my java script file.
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Mar 19, 2009Does someone could tell me if it is or not possible to get raw data from a sound file?
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Dec 29, 2009This is truly a beginner's question. I installed and successfully ran the notepad
tutorials Note pad v1,2,3 and typed in a few notes. Can i import data (manually )from an
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but no dbs seem to have been created? I looked for anything with .db extension or
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Android :: Grabbing XML File Data From Website
Nov 19, 2010Just wondering what would be the best way to grab the following data and parse it.Here's an example of some the data I want to pull.
<?xml version="1.0" encoding="UTF-8" ?>
<eveapi version="2">
<currentTime>2010-11-19 19:23:44</currentTime>
<result>
<rowset name="characters" key="characterID" columns="name,characterID,corporationName,corporationID">
<row name="jennyhills" characterID="90052591" corporationName="Imperial Academy" corporationID="1000166" />
</rowset>
</result>
<cachedUntil>2010-11-19 20:20:44</cachedUntil>
</eveapi>
I've seen some examples on how to parse XML data but they are all based on if statements and that's a lot of hard coding is there a more genertic way to do this?
Android :: Write / Read Log Data Into File
Mar 13, 2010how to read/write log data into a text file in android that file should be res folder.
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Dec 10, 2009My application needs to intensively manipulate (read-write) on some structured text data.The size of the data is significant 1Mb. And there is initial data available for the user to start with.My idea is to put this data as a file in the .apk. Then, on initial application launch to read this data and populate Android SQLite database with it. Then just work with this database. But after the database is populated the data file is no longer needed. And I'd like to remove it to free some memory. Alternate approach is to work with this data file instead of SQLite database. But I assume SQLite would work a magnitude faster then i/o on my data file..
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May 1, 2009My question is how to copy a file from sdcard to /data/misc/wifi directory? I am working on a configuration tool for wiki supporting wpa enterprise. The configured file wpa_supplicant.conf must be put in / data/misc/wifi in order to work. So how can I move the file from sdcard to there? Is there any function calls to request a superuser access?
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Aug 30, 2010I'm creating an app that I want to seed with a data file the app will use as its initial state. In the Eclipse project structure, where do I add the data file so that when the app is deployed to the device (and emulator) the data file is deployed with it?
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Nov 26, 2009I am developing an application that periodically sends information to an external server.I make a local copy of the data being sent, for backup purposes.What is the best option to store the data in terms of saving battery life? Each data submission is a serialized object (the class has 5 fields, including a date, numbers and strings) of about 5K-10K.Any other idea?
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Sep 3, 2010In my android app i am reading a file but require any the data on third line to be displayed.Is there any way to do that.
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Oct 27, 2010Is there a way to do it within an app without downloading the file first? Somehow stream the text content?
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Jul 15, 2010I have my Nexus One connected with the USB.When I visit the File Explorer of the DDMS, if I click on the "data" folder the little plus near the name "data" disappear for 2-6 seconds and then reappear but the contenct of the folder "data" is not showed!
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Oct 13, 2010I want to create a file in emulator android storage path /data/ but it seems I can't create a new file by programs,I should upload an empty file to /data/ and then write the file,an anyone help here? openFile Output("file.txt", MODE_PRIVATE) seems can create a new file in /data/data/Package/files/.but it can't create in path /data/.
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Aug 21, 2009I have written a test case to implement a conference contact management system with Content Provider and SQLite. The launch activity is a Listactivity and the customized provider is extended from ContentProvider, u know, actually the sample is so similar to the Notepad Sample in the official SDK packages. However, i can't find the created .db file in the /data/data/myapp/ except the /lib directory. Why?
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Nov 9, 2010I am developing an application that read data from sensors and write those data to an XML file when you press a key. i have 2 activity one for button and another is an Activity who implements sensorEventListener. the problem is my main activity is button and couldn't get data from event listener activity. i think the listener activity is not active but when i create an intent and start activity with that intent the program stop working. the button is able to create XML file solely.so how could i read sensor data from sensors,and how to send them to XML file when the button got clicks.
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May 25, 2010I am new to android.I need to read text file from SDcard and display that text file.Is there any possibility to view a text file directly in android. or else how to read and display the text file ?
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Jul 15, 2010I want to store a few values in the form of high scores. But since im not going to be storing more than 5 values, using SQLlite doesn't seem appropriate. Another option considering was a flat file, but not sure how to go about..
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Apr 21, 2009I plan to bundle an xml data file that has all the metadata required by the application. When my app loads for the first time, the xml data file is read and local database is created and populated. This xml file is a crucial part of my app and it holds at least 100k entries. I don't want this data to be compromised.
Is there a way to encrypt this data file so that the file is unreadable in case someone opens the .apk file and extracts the data file.
Android :: Saving ArrayList To Txt File / Data Folder Empty
Apr 25, 2010I am trying to save an arraylist to a .txt file below is the code I am using, which runs without error but when I try to go to Astro file manager and browse the data folder there is nothing there.
String filename = stationname.getText().toString() + System.currentTimeMillis();
FileOutputStream fos = openFileOutput(filename,Context.MODE_PRIVATE);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.writeObject(report);
Report is the ArrayList that holds each of my station Reports.
out.close();
Android :: Loading External Data On Local File In WebView
May 27, 2009when I load external web page, image or javascript file from local webpage. I can't see external image and can't load javascript or webpage. But I can only see local image. Why I can't load external javascript, webpage or image? Here is the HTML source. (of course, I filled right [daum open API key])
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http:// www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta
http-equiv ="Content-Type" content="text/html;
charset=UTF-8"> <title>Daum 지도 API</title>
<script type="text/javascript"
src="http://apis.daum.net/maps/maps.js?
apikey=[daum open API key]" charset="utf-8"></script> </head> <body>
<div id="map" style="width:600px;
height:400px;
" style="border:1px solid #000">
</div> <img src="http://4.bp.blogspot.com/_2-7AdSkZA7I/RlCnDhD3ZfI/ AAAAAAAAE9U/LEHMtyVLdY8/s400/CutyTale10.jpg">
<img src="file:///android_asset/coffeebean.jpg">
<script type="text/javascript">
var map = new DMap("map", {point:new DLatLng(37.48879895934866, 127.03130020103005), level:2} );
</script> <iframe src="http://www.daum.com" width="300" height="150"></iframe> </body> </html>
and I use this Activity source
package bo.my.android.test;
import android.app.Activity;
import android.os.Bundle; import android.webkit.WebView;
public class OpenAPITest extends Activity {
WebView webView;
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView) findViewById(R.id.webView1);
webView.setWebViewClient(new DaumMapClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("file:///android_asset/daummap.html");
//webView.loadUrl("http://www.daum.net");
} }