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  • Storage of events in Calendar application in Android 2.1

    - by Navin
    Does the calendar application in Android maintain a cache of its database? Whenever I edit and mark some events via the calendar app, it is stored in the database but if I edit the calendar.db from some outside source the changes made are not reflected in the calendar app. So my question is: Does the calendar app maintain a cache or some other form of database? If yes then where and how?

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  • android listview

    - by gayathri
    hai i want to remove the listitem from listview in android.i don't know that how to do it. anyone can help me how to do it.and give sample code for this?

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  • Android: how to share code between projects signed with the same certificate

    - by tomash
    In Android documentation concerning code signing we can read: "By signing multiple applications with the same certificate and using signature-based permissions checks, your applications can share code and data in a secure manner." How exactly such code sharing can be done? Is it possible to release main application and multiple exchangeable plugins then discover them at runtime? What does source code looks like and what are advantages over "standard" intents calls from/to different APK packages?

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  • Android USB Host Communication

    - by Kip Russell
    I'm working on a project that utilizes the USB Host capabilities in Android 3.2. I'm suffering from a deplorable lack of knowledge and talent regarding USB/Serial communication in general. I'm also unable to find any good example code for what I need to do. I need to read from a USB Communication Device. Ex: When I connect via Putty (on my PC) I enter: >GO And the device starts spewing out data for me. Pitch/Roll/Temp/Checksum. Ex: $R1.217P-0.986T26.3*60 $R1.217P-0.986T26.3*60 $R1.217P-0.987T26.3*61 $R1.217P-0.986T26.3*60 $R1.217P-0.985T26.3*63 I can send the initial 'GO' command from the Android device at which time I receive an echo of 'GO'. Then nothing else on any subsequent reads. How can I: 1) Send the 'go' command. 2) Read in the stream of data that results. The USB device I'm working with has the following interfaces (endpoints). Device Class: Communication Device (0x2) Interfaces: Interface #0 Class: Communication Device (0x2) Endpoint #0 Direction: Inbound (0x80) Type: Intrrupt (0x3) Poll Interval: 255 Max Packet Size: 32 Attributes: 000000011 Interface #1 Class: Communication Device Class (CDC) (0xa) Endpoint #0 Address: 129 Number: 1 Direction: Inbound (0x80) Type: Bulk (0x2) Poll Interval (0) Max Packet Size: 32 Attributes: 000000010 Endpoint #1 Address: 2 Number: 2 Direction: Outbound (0x0) Type: Bulk (0x2) Poll Interval (0) Max Packet Size: 32 Attributes: 000000010 I'm able to deal with permission, connect to the device, find the correct interface and assign the endpoints. I'm just having trouble figuring out which technique to use to send the initial command read the ensuing data. I'm tried different combinations of bulkTransfer and controlTransfer with no luck. Thanks. I'm using interface#1 as seen below: public AcmDevice(UsbDeviceConnection usbDeviceConnection, UsbInterface usbInterface) { Preconditions.checkState(usbDeviceConnection.claimInterface(usbInterface, true)); this.usbDeviceConnection = usbDeviceConnection; UsbEndpoint epOut = null; UsbEndpoint epIn = null; // look for our bulk endpoints for (int i = 0; i < usbInterface.getEndpointCount(); i++) { UsbEndpoint ep = usbInterface.getEndpoint(i); Log.d(TAG, "EP " + i + ": " + ep.getType()); if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK) { if (ep.getDirection() == UsbConstants.USB_DIR_OUT) { epOut = ep; } else if (ep.getDirection() == UsbConstants.USB_DIR_IN) { epIn = ep; } } } if (epOut == null || epIn == null) { throw new IllegalArgumentException("Not all endpoints found."); } AcmReader acmReader = new AcmReader(usbDeviceConnection, epIn); AcmWriter acmWriter = new AcmWriter(usbDeviceConnection, epOut); reader = new BufferedReader(acmReader); writer = new BufferedWriter(acmWriter); }

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  • Blogger GData NullPointerException on every second try on Android

    - by Vinay
    I am experiencing a strange phenomenon with Blogger GData API 2.0 on Android. I am using the BloggerService to retrieve blogs. First time it works fine. However EVERY SECOND TRY I get a NullPointerException: Caused by: java.lang.NullPointerException at com.google.gdata.wireformats.AltRegistry.lookupType(AltRegistry.java:190) at com.google.gdata.client.Service.parseResponseData(Service.java:1860) at com.google.gdata.client.Service.getFeed(Service.java:1054) at com.google.gdata.client.Service.getFeed(Service.java:916) at com.google.gdata.client.GoogleService.getFeed(GoogleService.java:631) at com.google.gdata.client.Service.getFeed(Service.java:935)

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  • Using GData and the Google Analytics on Android

    - by Luke Lowrey
    I am wondering what my options are for using GData and specifically the analytics api on android to build a small widget. After searching around for a while I couldnt come up with any libraries with decent examples. Are there any dedicated libraries with some decent examples / doco to do this sort of thing? I would like to target 1.6 but if the are 2.0 only I guess that is fine too.

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  • How to create Yahoo Messenger Client in Android?

    - by Rajapandian
    Hi I am trying to create Yahoo messenger client in Android, and i got Openymsg api to implement that.This is small snippet of my code Session session=new Session(); session.login("Email Id", "password"); But this code is throwing UnknownHost Exception in "scs.msg.yahoo.com".I dont know how to fix this.If any body knows it please help me.

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  • Does Android platform support SpatiaLite?

    - by Stan
    Is it possible to use SpatiaLite database on Android platform (1.6)? I am trying to program a google buzz-like app which need to take advantage of SpatiaLite functions, like calculating distance between 2 points, etc. Any external library needed? Thanks.

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  • Android - overlay small check icon over specific image in gridview or change border

    - by oscar
    I've just asked a question about an hour ago, while waiting for replies, I've thought maybe I can achieve what I want differently. I was thinking of changing the image but it would be better if I could perhaps overlay something over the top of complete levels in the gridview i.e a small tick icon At the moment, when a level has been completed I am storing that with sharedpreferences So I have a gridView layout to display images that represent levels. Let's just say for this example I have 20 levels. When one level is complete is it possible to overlay the tick icon or somehow highlight the level image. Maybe change the border of the image?? Here are the image arrays I use int[] imageIDs = { R.drawable.one, R.drawable.two, R.drawable.three, R.drawable.four, R.drawable.five, R.drawable.six etc....... and then I have my code to set the images in gridView. Obviously there is more code in between. public View getView(int position, View convertView, ViewGroup parent) { ImageView imageView; if (convertView == null) { imageView = new ImageView(context); imageView.setLayoutParams(new GridView.LayoutParams(140, 140)); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); imageView.setPadding(5, 5, 5, 5); } else { imageView = (ImageView) convertView; } imageView.setImageResource(imageIDs[position]); return imageView; would it be possible to do any of the above, even the border method would be fine. Thanks for any help

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  • Will <include> override the layout_width/layout_height value?

    - by Johnny
    I have a layout xml file named my_layout.xml, in which the root view's layout_width and layout_height has been specified as 200px. <com.jlee.demo.MyLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="200px" android:layout_height="200px"> If I used this xml to be included in another xml, and specify the layout_width and layout_height as 100px. <include layout="@layout/my_layout" android:layout_width="100px" android:layout_height="100px"/> What would be the real width/height of my_layout?

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  • Android beginner

    - by Karthick
    Hi I am new android. I need to know how to install it in windows xp and which one is the best IDE and what are the requirements are needed. And I need to know how to develop an application in that platform.

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  • Build android project from command line

    - by zoli2k
    I would like to build and android project from command line on Linux. In the root directory of the project there are the following files and directories: AndroidManifest.xml build.xml default.properties res/ src/ Can you provide a sample Makefile how to build this project?

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  • Android non-full screen app startup during voice call

    - by STeN
    Hello, Is it possible to start the application on the Android phone (starting with Froyo), when there is an incoming voice call? In other words, the incoming voice call should trigger the application startup. In such a case the application should not be full-screen, but should cover only part of the screen to not hide the native controls for accepting or rejecting the call. If it is not supported now - is anybody aware about some plans to support such a feature in future releases? Thanks a lot Kind Regards, STeN

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  • New to Android: Dynamically changing views

    - by Josiah Kiehl
    I'm trying to learn how to build apps for Android. The first simple app, which will become a component of a bigger app I hope to build, is to have a button on the screen where, when tapped, it adds something new to the view. For instance: Imagine a layout that only has a button: [Create!] When that button, the view gets a new row added to it: [Create!] A Something! Upon subsequent presses, more rows are added [Create!] A Something! A Something! And so on. I've made a LinearLayout and placed the button in it, and have attached a click listener to it. That all works great. What I can't figure out is how to get a handle on the LinearLayout in the onClick function with which I'll addView() the new TextView that says "A Something!" Am I on the right track? What basic thing am I missing? Thanks!

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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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