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  • What are the basics of dealing with user input events in Android?

    - by user279112
    Hello. I thought I had understood this question, but something is quite wrong here. When the user (me, so far) tries to press keys, nothing really happens, and I am having a lot of trouble understanding what it is that I've missed. Consider this before I present some code to help clarify my problem: I am using Android's Lunar Lander example to make my first "real" Android program. In that example, of course, there exist a class LunarView, and class nested therein LunarThread. In my code the equivalents of these classes are Graphics and GraphicsThread, respectively. Also I can make sprite animations in 2D just fine on Android. I have a Player class, and let's say GraphicsThread has a Player member referred to as "player". This class has four coordinates - x1, y1, x2, and y2 - and they define a rectangle in which the sprite is to be drawn. I've worked it out so that I can handle that perfectly. Whenever the doDraw(Canvas canvas) method is invoked, it'll just look at the values of those coordinates and draw the sprite accordingly. Now let's say - and this isn't really what I'm trying to do with the program - I'm trying to make the program where all it does is display the Player sprite at one location of the screen UNTIL the FIRST time the user presses the Dpad's left button. Then the location will be changed to another set position on the screen, and the sprite will be drawn at that position for the rest of the program invariably. Also note that the GraphicsThread member in Graphics is called "thread", and that the SurfaceHolder member in GraphicsThread is called "mSurfaceHolder". So consider this method in class Graphics: @Override public boolean onKeyDown(int keyCode, KeyEvent msg) { return thread.keyDownHandler(keyCode, msg); } Also please consider this method in class GraphicsThread: boolean keyDownHandler(int keyCode, KeyEvent msg) { synchronized (mSurfaceHolder) { if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) { player.x1 = 100; player.y1 = 100; player.x2 = 120; player.y2 = 150; } } return true; } Now then assuming that player's coordinates start off as (200, 200, 220, 250), why won't he do anything different when I press Dpad: Left? Thanks!

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  • update list selector dynamically in webos

    - by Aswan
    Hi i want to update list selector items dynamically .i am set the list selector widget like following this.ConversionToNumaric= [ {label:$L('One'), value:"1", secondaryIcon:''}, {label:$L('two'), value:"2", secondaryIcon:''}, {label:$L('three'), value:"3" , secondaryIcon:''} ] this.controller.setupWidget('listSelectorConversionToNumaric', {labelPlacement:'left',label: $L('To'), choices: this.ConversionToNumaric, modelProperty:'currentConversionToNumaric'}, this.selectorsModel); the above code i am using for setup the widget this.ConversionToNumaric= [ {label:$L('four'), value:"4", secondaryIcon:''}, {label:$L('five'), value:"5", secondaryIcon:''} ] ] this.currentConversionToPower.choices=this.ConversionToNumaric; this.controller.modelChanged(this.currentConversionToNumaric); what mistake i made here i don't know but it is not updating please help me

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  • Whats wrong with this ?

    - by Vibin Jith
    dim dataType as String toolTip="Marks And Number[String]" I want to get the [String] alone. dataType = toolTipText.Substring(toolTipText.IndexOf("[") + 1, toolTipText.IndexOf("]") - 1) it shows an error. Regarding the length of the string. What's wrong with my code.I dont know , Some times I have these type of problems . Standing with simple loops or conditions .

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  • Dynamically created jagged rectangular array

    - by gagar1n
    In my project I have a lot of code like this: int[][] a = new int[firstDimension][]; for (int i=0; i<firstDimension; i++) { a[i] = new int[secondDimension]; } Types of elements are different. Is there any way of writing a method like createArray(typeof(int), firstDimension, secondDimension); and getting new int[firstDimension][secondDimension]? Once again, type of elements is known only at runtime.

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  • Tool which can do both UML and ER Diagram

    - by Abhishek
    Hello, I have approval to buy one tool which can help programmers of my team to write better code. Most of my team members either do UML (.NET developers) or they do ER (database developers) Can you please recommend a tool for me which can do both of these type of diagrams? Please don't recommend Visio because my team already evaluated it and everyone disliked it as either a UML or ER diagram tool.

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  • Python - Get Instance Variables

    - by Chris Bunch
    Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code: class hi: def __init__(self): self.ii = "foo" self.kk = "bar" Is there a way for me to do this: >>> mystery_method(hi) ["ii", "kk"] Thanks guys! Edit: I originally had asked for class variables erroneously. Thanks to all who brought this to my attention!

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  • How to bind set of reports to report viwer ?

    - by prasad
    Hi all , I want to print a set of invoice for my application. So I need to display all invoices in report viewer before they print. are there any methods to bind multiple reports to same report viewer using crystal reports or rdlc. I try rdlc but I couldn't find any way to do that. please any one can provide code sample or instruction in C#.net it's worth for me. thank you.......

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  • Change Tweetmeme button colour under wordpress

    - by Andrew Bolster
    I've had a poke around in the TweetMeme plugin code and IANA JS Guru, but I cant find any sensible way to make specific styling changes; you can add div-specific CSS characteristics, but I'm talking about changing the resting colour and the hover colour of the button. I've googled around and noone seems to have asked it on here so I thought I should.

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  • Type derivation in python?

    - by aXqd
    In Perl, I can do this: push(@{$h->[x]}, y); Can I simplify the following python codes according to above Perl example? if x not in h: h[x] = [] h[x].append(y) I want to simplify this, because it goes many places in my code, (and I cannot initialize all possible x with []). I do not want to make it a function, because there is no 'inline' keyword. Any ideas?

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  • VB.NET LINQ to SQL Delete All Records

    - by Daniel
    I am having problems with deleting all records in a table with VB.NET. I am using this code to delete all records in the Contacts table For Each contact In database.Contacts database.Contacts.DeleteOnSubmit(contact) Next But I get this error Can't perform Create, Update or Delete operations on 'Table(Contact)' because it has no primary key. Anyone have any suggestions? Thanks

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  • What are programming lost arts?

    - by pavpanchekha
    Have you ever programmed raw machine code (not for class)? Examined a hex dump with just a hex editor (or, heck, without)? Written your own software floating-point library? Division library? Written a non-school-assignment in Lisp or Forth? What sort of "lost arts" have been forgotten? And what reason (if any) would there be to resurrect them?

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  • .NET 2.0 Process Elevation for App Installation

    - by Brian Gillespie
    We have an application written in both C++ and .NET that installs for all users in the Program Files folder. This application downloads new versions of itself (as MSI installers) and spawns the new installer process to replace itself. The install process as it exists today: Copy an install manager app (C#, .NET 2.0) to the temp directory. Call this 'Manager' Manager is executed with elevated privs per this article. The original application exits. Manager spawns the MSI installer (with elevated privs, since the copy is elevated) Manager spawns the new version of the app. The bug: The newly installed app is running in an elevated state. This causes problems I won't enumerate here. Ideally, the launch of the newly installed app would be run with the permissions of the original user. I can't figure out how to demote the app back to being the standard user after elevation. An inelegant hack: (yeah, yeah, this whole process is inelegant anyway) Copy the install manager to the temp directory Run the install manager with standard user privs. Lets call this instance 'LowlyManager'. Original application exits. LowlyManager spawns the app again, this time with elevated privs. Let's name this instance 'UpperManagement' UpperManagement spawns the installer UpperManagement exits gracefully, returning the exit code of the installer. LowlyManager interprets the error code from UpperManagement, and spawns the newly installed application. This time as the original invoker. Is there a better way to do this? (I've left out a bunch of other details before and after these steps that make the process smoother for the user, but this should be enough to understand the core of the problem I'm trying to solve.) Other requirements: We can't install as a per-user app The user shouldn't be presented with an authentication dialog box if UAC would have simply asked "are you sure you want to allow this?". I think this might kill a solution using WindowsImpersonationContext, but I'm not sure. The system needs to work on XP, Vista, and Windows 7 (even if there is a separate process for XP).

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  • Enable all caches except asp net output cache

    - by Timmy O' Tool
    Hi I have different urls that points to the same code www.url1.com www.url2.com I need to use the cache, but if the asp net cache is enabled when someone access to www.url1.com next person accessing www.url2.com could get the previously cached data (www.url1.com) I need to have ALL caches activated except this one.

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  • How to implement "tab drop in window" and "tab drop out of window" effect

    - by stanleyxu2005
    How to implement "tab drop in window" and "tab drop out of window" effect, just like the google chrome browser? My imagination is that: It is not a single application. The main browser frame is an application, the tabs are several applications without a window frame. When the main browser frame is resized or moved, all tabs will be notified to be resized or moved. Is there any existing component or code example can do this?

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  • One-to-many relationship in the same table in zend

    - by Behrang
    I have groupTable(group_id,group_name,group_date,group_parent_id) in face each group have many group child I create groupModel and I want to begin coding is this right code to handle protected $_name = 'group'; protected $_dependentTables = array('Model_group'); protected $_referenceMap = array('Model_group' = array('columns' = array('group_parent_id') , 'refTableClass' = 'Model_group' , 'refColumns' = array('group_id') , 'onDelete' = self::CASCADE , 'onUpdate' = self::RESTRICT) );

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  • boost::bind breaks strict-aliasing rules?

    - by Kyle
    Using Boost 1.43 and GCC 4.4.3, the following code boost::bind(&SomeObject::memberFunc, this, _1)); Generates the following warning boost/function/function_base.hpp:321: warning: dereferencing type-punned pointer will break strict-aliasing rules What's the correct way to eliminate these warnings without setting -fno-strict-aliasing?

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  • Getting my head around the practical applications of strong and weak pointers in Objective-C

    - by Chris Wilson
    I've just read the accepted excellent answer to this question that clarifies the conceptual differences between strong and weak pointers in Objective-C, and I'm still trying to understand the practical differences. I come from a C++ background where these concepts don't exist, and I'm having trouble figuring out where I would use one vs the other. Could someone please provide a practical example, using Objective-C code, that illustrates the different uses of strong and weak pointers?

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  • dos batch assign returned values from a command into a variable (from powershell)

    - by nokheat
    i am refering to this question ASSIGN win XP dos commandline output to variable http://stackoverflow.com/questions/537404/assign-win-xp-dos-commandline-output-to-variable i am trying to use it on a powershell code segment so i typed powershell date (get-date).AddDays(-1) -format yyyyMMdd and confirm it returns like 20100601 but then if i tried to for /f "tokens=*" %a in ('powershell date get-date -format yyyyMMdd ') do set var=%a then it failed to work as expected. how can i transfer the date to a variable?

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  • How to provide an own contentView for using -drawRect?

    - by mystify
    I want to use -drawRect: in an UITableViewCell subclass but it is covered by contentView. So the best option seems to be that I make a UIView subclass with my -drawRect: code and use that as contentView. But how could I feed my UITableViewCell subclass with that contentView? UITableViewCell creates that on its own when the contentView property is accessed. Would I simply override the getter method and then provide my own view there?

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  • How do I add a reference to an assembly?

    - by Gold
    I am trying to run some PDF to text C# code. I have references to 2 DLLs and I get this error when I try to run the program: the type 'java.io.File' is defined in an assembly that is not referenced. You must add a reference to assembly 'IKVM.GNU.Classpath, Version=0.20.0.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58'. How do I add a reference to this assembly?

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  • Getting CoreMIDI to work in snow leopard with SimpleSynth

    - by suman-gurung
    I have been trying to follow the steps in the book Ruby Practical Project - making music with ruby and was trying to get CoreMIDI and output some notes using SimpleSynth. I can connect to the destination but when i do something like midi = LiveMIDI.new midi.note_on(0, 60, 100) I get no output from the sound system. Has anyone tried the code and faced similar situation?? And also What are the better libraries for music programming in Ruby?

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  • secure from unauthorised access

    - by soclose
    Hi, Based on the user requirements, he wants to use our android application via pin code access like login whenever he starts to use this application. In Android or any mobile, most of the applications start again the last using layout. so which event should i call this login alertdialog to access each time users start to use it? Or let me know the better. Thank you.

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