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  • How to create a custom listview in android

    - by kaibuki
    Hi All, I want to create a list view custom like this link : http://sites.google.com/site/androideyecontact/_/rsrc/1238086823282/Home/android-eye-contact-lite/eye_contact-list_view_3.png?height=420&width=279 so far I have made a list view with text, and I am not extending list Activity, but I am extending Activity only. please if someone can provide me with a code for this. Thanks alot Cheers Kai

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  • gps orientation in android

    - by klaus-vlad
    Hi I know that the function Location.getBearing() returns the bearing if any when in move public void onLocationChanged(Location lastLocation) { int bearing=lastLocation.getBearing() } ,so now bearing might be , 170 degrees..but, I'd like to know if there is anything in android that will give me the direction of the orientation (ex for 170 degrees , the direction is : SSE south, south east)

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  • Android library to get pitch from WAV file

    - by Sakura
    I have a list of sampled data from the WAV file. I would like to pass in these values into a library and get the frequency of the music played in the WAV file. For now, I will have 1 frequency in the WAV file and I would like to find a library that is compatible with Android. I understand that I need to use FFT to get the frequency domain. Is there any good libraries for that? I found that [KissFFT][1] is quite popular but I am not very sure how compatible it is on Android. Is there an easier and good library that can perform the task I want? EDIT: I tried to use JTransforms to get the FFT of the WAV file but always failed at getting the correct frequency of the file. Currently, the WAV file contains sine curve of 440Hz, music note A4. However, I got the result as 441. Then I tried to get the frequency of G4, I got the result as 882Hz which is incorrect. The frequency of G4 is supposed to be 783Hz. Could it be due to not enough samples? If yes, how much samples should I take? //DFT DoubleFFT_1D fft = new DoubleFFT_1D(numOfFrames); double max_fftval = -1; int max_i = -1; double[] fftData = new double[numOfFrames * 2]; for (int i = 0; i < numOfFrames; i++) { // copying audio data to the fft data buffer, imaginary part is 0 fftData[2 * i] = buffer[i]; fftData[2 * i + 1] = 0; } fft.complexForward(fftData); for (int i = 0; i < fftData.length; i += 2) { // complex numbers -> vectors, so we compute the length of the vector, which is sqrt(realpart^2+imaginarypart^2) double vlen = Math.sqrt((fftData[i] * fftData[i]) + (fftData[i + 1] * fftData[i + 1])); //fd.append(Double.toString(vlen)); // fd.append(","); if (max_fftval < vlen) { // if this length is bigger than our stored biggest length max_fftval = vlen; max_i = i; } } //double dominantFreq = ((double)max_i / fftData.length) * sampleRate; double dominantFreq = (max_i/2.0) * sampleRate / numOfFrames; fd.append(Double.toString(dominantFreq)); Can someone help me out? EDIT2: I manage to fix the problem mentioned above by increasing the number of samples to 100000, however, sometimes I am getting the overtones as the frequency. Any idea how to fix it? Should I use Harmonic Product Frequency or Autocorrelation algorithms?

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  • StringBuffer wont read whole stream into a string (JAVA/Android)

    - by Levara
    Hi all! I'm making an android program that retrieves content of a webpage using HttpURLConnection. I'm new to both Java and Android. Problem is: Reader reads whole page source, but in the last while iteration it doesn't append to stringBuffer that last part. Using debbuger I have determined that, in the last loop iteration, string buff is created, but stringBuffer just doesnt append it. I need to parse retrieved content. Is there any better way to handle the content for parsing than using strings. I've read on numerous other sites that string size in Java is limited only by available heap size. I've tried with StringBuilder too. Anyone know what could be the problem. Btw feel free to suggest any improvements to the code. Thanks! URL u; try { u = new URL("http://feeds.timesonline.co.uk/c/32313/f/440134/index.rss"); HttpURLConnection c = (HttpURLConnection) u.openConnection(); c.setRequestProperty("User-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727)"); c.setRequestMethod("GET"); c.setDoOutput(true); c.setReadTimeout(3000); c.connect(); StringBuffer stringBuffer = new StringBuffer(""); InputStream in = c.getInputStream(); InputStreamReader inp = new InputStreamReader(in); BufferedReader reader = new BufferedReader(inp); char[] buffer = new char[3072]; int len1 = 0; while ( (len1 = reader.read(buffer)) != -1 ) { String buff = new String(buffer,0,len1); stringBuffer.append(buff); } String stranica = new String(stringBuffer); c.disconnect(); reader.close(); inp.close(); in.close();

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  • Android - getting data from a server

    - by jonhobbs
    I've read lots about using local storage for android but how would I connect to an SQL database online to send and get data? For example, if I was making a game and wanted to create a worldwide high score table, how would I store that online and make sure it was only available to that app? Thanks, Jon

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  • Create and display indoor map on Android

    - by Lorenzo Barbagli
    I'm developing an Android application and I would like to display an internal (indoor) map of some buildings, but I don't know where to begin: I want to create a custom kml file (how it's possible to create it? with which tool?) and display it in a fragment. I already have it working with external maps (simple GoogleMap in MapFragment), so it would be super to have the kml file placed 'over' the GoogleMap, like real indoor maps. Thanks

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  • Getting the Position of an Android phone by using GPS

    - by poeschlorn
    Hey, it's me again, I've got another question regarding to basic Android programming: How can I access the GPS for getting the current Position of the mobile phone the app is running on? How long can this take to retrieve the information? In this case the GPS might be disabled, how can I enable/disable it again. Which permissions must be granted in the andorid manifest? Greetings and thanks for ur answers, poeschlorn

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  • blue tooth programming on android

    - by user121196
    I currently use blue tooth api on android and am able to pair with regular devices(eg. my pc with built-in blue-tooth). However it doesn't get a response when trying to connect to it. What is the meaning of connect in blue tooth? is this a built-in protocol of bluetooth?

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  • Android Soft Keyboard value using array

    - by Shubh
    Hi friends, Yet I use Soft Keyboard sample from http://developer.android.com/resources/samples/SoftKeyboard/index.html Here we uses ASCII value from XML ,now at the place of XML I want to generate these value using array. How can I do this Thanks in Advance

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  • Java / Android self naming

    - by ngreenwood6
    I am about to start developing an Android application and had a question if in Java there self naming. For instance say I had a variable named dog that held the value of scruffy. Could I then create a variable named scruffy from that variable. In PHP it would be $$dog. That would make a variable with the name scruffy. If this is possible please provide example

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  • External project reference in android

    - by bryan costanich
    Hi all, I have an android application that utilizes another project as a project reference. i've gone into the application options, build path, and then selected the project in project references. everything builds and deploys fine, but when i try to run the application and instantiate a class in that project, i'm getting a java.lang.NoClassDefFoundError errrrrr. i'm no java project expert, so i assume i've cocked something simple up. any ideas?

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  • How to design a grid in Android (for multi-screen)

    - by Cris
    Hello, i need to realize an app for Android using this background image: Over every cell i have to draw a TextView, but i don't know how to do it with the different screens; i have the background image with 3 resolutions (240x320, 320x480, 480x800) but i don't know what kind of layout to use; i would use GridView but i don't know if i can work with different column size. Can anyone help me? Thanks in advance

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  • Testing an application for Android.

    - by Tarmon
    Hey Everyone, I was wondering if any one had compiled a list of the most commonly used Android devices so I can get an idea of what I should test for. Even better would be suggested configurations for emulating each device. Thanks, Rob

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  • android.R.layout.simple_list_item_checked not toggling in ListView

    - by Mohit Deshpande
    Here is my custom adapter: ... @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { LayoutInflater inflater = LayoutInflater.from(context); View v = inflater.inflate(android.R.layout.simple_list_item_checked, parent, false); return v; } ... Now this visually appears to be exactly what I needed. The problem is that I can't get toggle the checked state when I click on the listview item. Any solutions?

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