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• Debuging to simulator crashes with "exited with status 5" unless I debug

  - by tigermain

  For some reason the app I am working on has very bad PMT! Literally! Most of the time I cannot debug using the simulator without putting a breakpoint in my AppDelegate. If I don't it exists with "status 5". If I put a break point in and simple continue it works perfectly well, it also works if I run the app in the simulator when not connected to the GDB. I have tried the source on a second machine with exactly the same results. I dont have this issue building to the device?!?!?! Thanks

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• Google app engine or Amazin ec2 for Restful services and direct access to datastore

  - by imran

  I'm thinking of building a Restful app on either App engine or ec2 devloped in Java. I'm interested in opinions/experience of using the two options for this. The primary purpose is to create web services to write and retrieve data through a mobile device...basically creating an API for the service I want to create. It seems to me it would be quicker and cheaper in the beginning to go with google app engine using either restlet or grails.But I also think that I could run into problems in the future when I want to so somthing more advanced and might be restricted by app engines environment. I also want to be able to do data analysis on the data in the datastore as well. It seems that with app engine this would be hard as I don't have direct access to the datastore ( in Amazon I could still have access to the underlying db if I go with MySQL ) .

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• How would I access the Windows Login (Authentication) API from a C++ Service Application?

  - by Gabriel

  Let us imagine for a moment that I have a piece of hardware that can act as an authentication for a user on a given system. I want to write an application in C++ to run as a service, look for this device and if found log the appropriate user in. I believe I have found the API's I would need to use to perform the hardware and service portions of the application but am having a hard time nailing down a way to create a "real" user login. Is this possible? If so where would I look to find resources on accomplishing this? I think of it as being an analog to fingerprint scanner login type devices.

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• Can I use android.os.* libraries in a standalone project?

  - by medicdave

  I'm trying to develop an external library (not sure if that's the right term) to provide prepackaged functionality in Android projects. Working in Eclipse, I've added the appropriate android.jar file to the build path, and everything is happy both while editing and upon compilation. However, when I use Android's Handler and Message classes (android.os.Handler, android.os.Message) for inter-thread communication, I get exceptions unless I'm running within an Android app, on the emulator or a device. I can no longer test my library in a "standalone" way without having to go through a running Android target. Is there any way for me to include these two Android classes and still be able to test my library standalone? Do I need to have the Android source available? Or would it require some sort of conditional compilation hand-waving?

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• Reading Images only from Camera

  - by Ankit

  I wanted to read images only from the Camera folder of the device. Since the folder might be different for different devices, how can I write a simple application for it). So far I have written the following code, which does read from Camera folder, but it also reads from other places on sdcard as well. Cursor childCursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, MediaStore.Images.ImageColumns._ID, null); do { ImageView image = new ImageView(); image.setImageURI(Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, ""+ childCursor.getString( childCursor.getColumnIndex( MediaStore.Images.ImageColumns._ID ))); <some other code> } while (childCursor.moveToNext()); How can I create a generic app and filter on Camera Images before displaying. Any help is appreciated.

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• New programming jargon you coined?

  - by jdk

  What programming terms have you coined that have taken off in your own circles? (i.e. have heard others repeating it?) It might be within your own team, workplace or garnered greater popularity on the Internet. Define your programming term, word or phrase in bold followed by an explanation, citation and/or usage example so we can use it in appropriate context. This question serves in the spirit of communication among programmers through sharing of terminology with each other, to benefit us by its propagation within our own teams and environments. Please no repeats of common jargon already ingrained in the programming culture like: "kludge", "automagically", "cruft", etc. (unless you coined it). Stealing from the comments: A shared vocabulary is the basis of communication, not just among programmers, Note: This Programming question has been reworded/reorganized to phrase a real question and remove ambiguity, vagueness and rhetorical device. It is not difficult to know what is being asked & question can be reasonably answered (see answers below).

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• How To Read Data using Ip Address

  - by DATT OZA

  I am doing punch card reader programming.. Establish connection with BioAccess V2 Device... socket successdully connected but data can't read... so how to read data ? Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp); var ipaddress = IPAddress.Parse("192.168.000.111"); IPAddress add = new IPAddress(ipaddress.GetAddressBytes()); EndPoint ep = new IPEndPoint(add, 5005); sock.Connect(ep); if(sock.connected) { } now what i have to do in IF BLOCK to read data ?

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• Why OpenGL ES texture mapping is very slow?

  - by Cinar

  I have an Android application that displays VGA (640x480) frames using OpenGL ES. The application reads each frame from a movie file and updates the texture accordingly. My problem is that, it is taking almost 30 ms. to draw each frame using OpenGL. Similar test using the Canvas/drawBitmap was around 6 ms on the same device. I'm following the same OpenGL calls that VLC Media Player is using, so I'm assuming that those are optimized for this purpose. I just wanted to hear your thoughts and ideas about it?

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• Jquery roller/toggle effect

  - by Paul Higgins

  Hi, I'm looking for a "roller toggle" in jquery (ideally using a plugin). If I have the following HTML: <ul> <li>Option 1</li> <li>Option 2</li> <li>Option 3</li> </ul> I would like the first option to be displayed and the others hidden. Each time I "tap/click" on an option it displays the next and loops around to the first one after the last one. When used on a mobile web device I'd like it respond to swipe up/down events and appear like a "roller" (i.e. using a slide up/down effect). Too much to ask? Hopefully not, any pointers appreciated. Thanks, Paul

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• Is google gson running on android?

  - by Janusz

  I'm playing arround with google gson for communication with my web back end at the moment. This and this older posts indicate that there are some problems with gson on android. I did some easy tests on the device already but maybe I just missed the bug. Edit I'm now parsing a lot more data. Generic lists etc. still not encountered the bug. Has anybody used gson on Android already? How does it work? Has somebody encountered bugs or something that will stop me from using it once it gets more complicated?

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• Issue connecting to SQL Compact Edition on Windows Mobile 6 Emulator

  - by Chad

  I am developing an application for Windows Mobile 6 using an emulator. When I try to open the database connection to the SDF file it is throwing an exception that it is not able to connect or find the file. My questions are: Where on the mobile device is the SDF file supposed to be deployed? Does the SDF file get automatically deployed to the emulator when I build the project (like in then windows forms app) or do I have to do that manually? Any help would be appreciated.

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• serial port close hangs in compact frame work 3.5

  - by ananda

  I have developed the application for windows mobile 5.0 and .net compact framework 2.0 sp2. This application communicates to the hardware device using serial port. This application works fine in windows mobile 5.0 based PDAs. I have handled data received event to get the data from serial port. But when I run my application on windows mobile 6.1 and .net compact framework 3.5, my application hangs on serial port close API call. There are many workarounds mentioned in the .net compact framework blog like (closing the com port on different thread, opening the port in the beginning of the application and close once application exists, polling for data instead of event handling), but nothing is working consistently.

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• apple push notification review

  - by user280390

  Hey all, I am implementing APN's and want to release without switching it on yet.. So the app will happily receive them. but we will choose not to send them until later. My question is, as when we want to send notifications is in our control, do apple care about this when reviewing the app. I thinking not, maybe they send a test notification to the device to prove it works? but if anyone has any experience in dealing with this any info would be much appreciated. Thanks.

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• My object becomes NSCFArray when running on iPhone

  - by cagreen

  I'm really scratching my head on this one: I have an object (MyObject) which I instantiate, and this object has an NSArray member variable. The following simple code working in the sim: MyObject *myObj = [[MyObject alloc] init]; NSArray *arr = [myObj myMemberArray]; When I hover over myObj in XCode the tooltip reads "MyObject". Good! But when I debug it on the device (OS 3.1.3) I get: "[NSCFArray myMemberArray]: unrecognized selector sent to instance ... " When I hover over myObj, sure enough it reads "NSCFArray". Can anyone give me some pointers on where to go next with this? Thanks.

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• Best way to handle input from a keyboard "wedge"

  - by Mykroft

  I'm writing a C# POS (point of sale) system that takes input from a keyboard wedge magcard reader. This means that any data it reads off of a mag stripe is entered as if it were typed on the keyboard very quickly. Currently I'm handling this by attaching to the KeyPress event and looking for a series of very fast key presses that contain the card swipe sentinel characters. Is there a better way to deal with this sort of input? Edit: The device does simply present the data as keystrokes and doesn't interface through some other driver. Also We use a wide range of these types of devices so ideally a method should work independent of the specific model of wedge being used. However if there is no other option I'll have to make do.

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• PLCameraController is not adding in viewcontroller

  - by sujyanarayan

  Hi, I've declared PLCameraContoller instance in my AppDelegate class as:- self.cameraController = [PLCameraController performSelector:@selector(sharedInstance)];[cameraController setDelegate:self]; And I'm accessing it in one of my viewcontroller class as:- del = [[UIApplication sharedApplication] delegate]; UIView previewView = [del.cameraController performSelector:@selector(previewView)]; previewView.frame = CGRectMake(0,0, 320, 480); self.view = previewView; [del.cameraController performSelector:@selector(startPreview)]; [del.cameraController performSelector:@selector(setCameraMode:) withObject:(NSNumber)1]; Where "del" is an instance of my AppDelegate class. But i can see only black background in my viewcontroller view in iphone device. Also if i remove "self" from the appdelegate.m code of cameracontroller it also showing blank. How can i get camera in my view controller? I'm pretty much struggling with it. Thanks in Adv.

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• Phonegap/Cordova orientation change Android 4

  - by user1477576

  I have a problem changing the orientation of the device (Android 4). In other versions it works fine. Versión of Cordova: cordova-1.8.0.js / cordova-1.8.1.js In Android 4 the app crash or show: "A network error occurred. (file:///android_asset/www/index.html)" I searched a lot about this and no answer solves the problem. In most cases users suggest adding: android:configChanges="orientation|keyboardHidden|screenSize" In other cases: super.setIntegerProperty("loadUrlTimeoutValue",60000); That not work for me :( My manifest activity: <activity android:name=".AppNameActivity" android:label="@string/app_name" android:configChanges="orientation|keyboardHidden|screenSize"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> The application should run on Android 2.2 to 4. Thank you very much for the help.

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• How to get current location with an accept accuracy in Android

  - by virsir

  I am trying to locate user's device to get its current location with coarse method. The problem is that I can only accept a location with accuracy of 1000m, my code like this: public void onLocationChanged(Location location) { currentLocation = location; if(location.hasAccuracy()) { if(location.getAccuracy() < 1000) { locationManager.removeUpdates(this); callback(); //do callback here } } } But what if the network is not good and I can not get the location with that accuracy? I may want to accept the latest location I got if I have requested its location for some time, like 1 minute. Then how can I control the request time, for example, 1 minute, if it did not get the accurate location until then, I will stop it and then accept the latest location I have got if exist.

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• General zoom algorithm for drawing program

  - by Steven Sproat

  My GUI toolkit, wxPython provides some methods for implementing a user zoom factor, however the quality isn't too good. I'm looking for ideas on how to create a zooming feature, which I know is complicated. I have a bitmap representing my canvas which is drawn to. This is displayed inside a scrolled window. Problems I forsee: - performance when zoomed in and panning around the canvas - difficulties with "real" coordinates and zoomed in coordinates - image quality not degrading with the zoom Using wxPython's SetUserScale() on its device contexts presents image quality like this - this is with a 1px line, at 30% zoomed in. I'm just wondering the general steps I'll need to take and the challenges I'll encounter. Thanks for any suggestions

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• Palm webOS CSS Targeting Hack?

  - by Tom

  Although it is not good practice, I am looking for a CSS hack to target Palm webOS. The problem is that Safari 3+ is awesome, and I can do some things like gradient background animations on text, but only in Safari. Right now I use @media screen and (-webkit-min-device-pixel-ratio:0) {} and it works like a charm, no Opera, Firefox, or whatever, because if I set the background to the image as I do in Safari they will all be ruined. But Palm's browser is based on webkit, and it uses the rules inside, and Palm's browser doesn't support text backgrounds so all I get is the image moving, no text. I would prefer a CSS hack, but if need be a Javascript one will do.

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• Phonegap - iOS keyboard is not hiding on outside tap of input field

  - by Prasoon

  On input text focus, keyboard appears as expected. But when I click outside of the input text, keyboard does not hide. I am using java script and jQuery. With jQueryMobile JS and CSS - page behaves correctly. But for this project we are not using jQueryMobile. This problem is only with iOS simulator/device. With Android, it's working perfectly fine. I even tried using document.activeElement.blur(); on outer element click/tap. But then I am unable to focus to input text, because that input text is inside that outer element.

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• android set hidden the keybord on press enter (in a EditText)

  - by user119333

  Hi, When my user press "ENTER" on the virtual android "user validate entry!" keybord my keybord stay visible ! (Why?) Here my Java code... private void initTextField() { entryUser = (EditText) findViewById(R.id.studentEntrySalary); entryUser.setOnKeyListener(new OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { if (event.getAction() == KeyEvent.ACTION_DOWN) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_ENTER: userValidateEntry(); return true; } } return true; } }); } private void userValidateEntry() { System.out.println("user validate entry!"); } ... here my View <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> <EditText android:id="@+id/studentEntrySalary" android:text="Foo" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> Maybe something wrong on my virtual device ?

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• Simple sound effect loop using AudioToolKit

  - by Typeoneerror

  I've created a few sounds for use in my game. I can play them at certain events without issue: // create sounds CFBundleRef mainBundle; mainBundle = CFBundleGetMainBundle(); _soundFileShake = CFBundleCopyResourceURL(mainBundle, CFSTR("shake"), CFSTR("wav"), NULL); AudioServicesCreateSystemSoundID(_soundFileShake, &_soundIdShake); // later... AudioServicesPlaySystemSound(_soundIdShake); The game has a mechanism which allows you to shake the device to activate some functionality. I've got the shaking code done so I get get a "shaking started" and "shaking ended" message to my game. What I need to have happen is start playing "shave.wav" when shaking starts and loop it until it stops. Is there a way to do this with AudioToolbox/AudioServices? How could I do this if not?

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• What should be the image resolution for Nexus One or Droid?

  - by sunil

  Hi, As Android supports multiple devices from different manufacturers there are different screen resolutions supported. The table that is available at http://developer.android.com/intl/fr/guide/practices/screens_support.... is not very clear to me. It shows WVGA and FWVGA in MDPI for Large Screens and HDPI for Normal screens. So, if the image is kept in drawable-mdpi and its resolution is 320 * 480 then which image will be taken by Large Screens device of MDPI. Moreover, there are two screen resolutions for HDPI i.e. 480 * 800 and 480 * 854. So, with what screen resolution the image should be built. I want to place the background image which looks distorted in WVGA emulator since its resolution is 320 * 480. I have read about nine patchable images but I think they are better for button images and edittext images so that they can stretch according to the data in it. Can someone please guide me in this? Regards Sunil

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• UIWebView loads a local file for a long time

  - by Knodel

  I have a UIWebView which loads .rtfd.zip files like this: -(void)viewWillAppear:(BOOL)animated { self.title=@"Title"; if(rowPosledovatelnosti==0) { [self loadFile:@"PosledovatelnostiObzie.rtfd.zip"]; } if(rowPosledovatelnosti==1) { [self loadFile:@"Arifmeticheskaya.rtfd.zip"]; } if(rowPosledovatelnosti==2) { [self loadFile:@"Svojstva_Arifmeticheskoj.rtfd.zip"]; } if(rowPosledovatelnosti==3) { [self loadFile:@"Geometricheskaya.rtfd.zip"]; } if(rowPosledovatelnosti==4) { [self loadFile:@"Predel_Posledovatelnosti.rtfd.zip"]; } if(rowPosledovatelnosti==5) { [self loadFile:@"Summa_Geometricheskoy.rtfd.zip"]; } } But on the device it takes some time for the UIWebView to load the content. Is there any way to optimize the loading time?

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