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  • Best Practice - Validating Input In Simple GUI Application?

    - by Alex
    I'm writing a GUI app with wxwidgets in C++ for one of my programming classes. We have to validate input and throw custom exceptions if it doesn't meet certain conditions. My question is, what is best practice when it comes to this? Should I write a seperate function that checks for errors, and have my event handler's call that function? Or should I do my error-checking in my event handlers? Or does it really matter? Thanks!

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  • Web application date time localization best practice at 201x

    - by Hieu Lam
    Hi all, I have worked for various web projects but correct date time localization have not been done and considered throroughly so I want to ask this very typical problem here and I want to hear comments from expert in this problem What is the correct strategy for storing a date/time value from client from server As I understand, because of locale and timezone so we have to do the conversion, I have heard about GMT or UTC time and after do some search it seems that UTC is more accurate ? so we will convert from client time - UTC+0 when saving and when we read the value from server to client, we convert from server time back to client time again ? However, I see in some website, at the bottom have the sentence "All times are in UTC", "All times are in GMT" and also "All times are in your local time". So maybe not all the sites do the convertion back and forth ? And in that case the user has to manually do the date/time conversion ? How to display the date/time convenient to user based on his locale and region How to provide personalization on date/time value ? I had one time depends on vbscript to do the display and the format is read from windows regional and format settings automatically. But without vbscript how can we determine a date/time pattern for a user of a specific locale. Do we have to store a mapping between a locale and pattern somewhere and do the conversion at the server side ? Although date/time conversion is needed in most case, there's situation where only date matter for example if my birthday is 2 Feb 1980, it should be the same for all locale and no conversion should be done. How can we address this issue.

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  • SQLite table query

    - by soclose
    Hi I query the table by using this function below public Cursor getTableInfo() throws SQLException { return db.query(TableName, null, null, null, null, null, null); } I got the error "View Root.handleMessage(Message)line:1704". I could insert the data but can't query the data. I called this function below Cursor c = db.getTableInfo(); int cRow = c.getCount(); if (cRow == 0) { Toast.makeText(NewContact.this, "No Record", Toast.LENGTH_LONG).show(); } Please help me.

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  • Can I parse uri from resource?

    - by DYH1919
    // startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.donate_url)))); startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"))); when I use the first,app will crash in emulator but the second run well, how can I fix the first? thanks for help

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  • How can change my TabHost ?

    - by enricozhang
    I have a tabhost, e.g: final TabHost tabs = getTabHost(); tabs.setup(); TabHost.TabSpec spec = null; spec = tabs.newTabSpec("search"); spec.setContent(new Intent(this, Search.class)); spec.setIndicator("search"); tabs.addTab(spec); in this tabhost is a Intent,and in the activity must change to other activity, question is I hope the other actitivy at same tabhost switch? Can do this?

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  • Getting coordinates when clicking anywhere on a MapView

    - by DixieFlatline
    I just cant get this working. I tried using the code below with onTouchEventand and it doesn't work. If i return true at the end of the method, i get the toast with the coordinates but can't move a map, and if i return false, i can move a map but cant display a toast after the user clicks on a map. If i get it right, the other onTap method is used only for clicking on a overlays. Has anybody figured this thiing out? public boolean onTouchEvent(MotionEvent arg0, MapView arg1) { //super.onTouchEvent(arg0); int akcija = arg0.getAction(); if(akcija == MotionEvent.ACTION_UP){ if(!premik) { Projection proj = mapView.getProjection(); GeoPoint loc = proj.fromPixels((int)arg0.getX(), (int)arg0.getY()); String sirina=Double.toString(loc.getLongitudeE6()/1000000); String dolzina=Double.toString(loc.getLatitudeE6()/1000000); Toast toast = Toast.makeText(getApplicationContext(), "Širina: "+sirina+" Dolzina: "+dolzina, Toast.LENGTH_LONG); toast.show(); } } else if (akcija == MotionEvent.ACTION_DOWN){ premik= false; } else if (akcija== MotionEvent.ACTION_MOVE){ premik = true; } return false; //return super.onTouchEvent(arg0); }

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  • Handling Status Bar notification

    - by MAkS
    in my app a background service starts and from that service i want to set Status bar notification, that the service has Started following is the code : Context context = getApplicationContext(); String ns = Context.NOTIFICATION_SERVICE; int icon = R.drawable.icon; CharSequence tickerText = "Hello"; long when = System.currentTimeMillis(); Notification notification = new Notification(icon, tickerText, when); CharSequence contentTitle = "My notification"; CharSequence contentText = "Hello World!"; Intent notificationIntent = new Intent(MyService.this, MyClass.class); notificationIntent.setFlags( Intent.FLAG_ACTIVITY_NEW_TASK); PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0); notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent); NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns); mNotificationManager.notify(1, notification); Notification is displayed in Status bar But whin i click on that MyClass.class is not fired.And in log cat it shows "Input Manager Service Window already focused ignoring focuson ...." so plz provide solution. thanks in advance

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  • Build error in Visual Studio application

    - by ame
    I have a solution that I am trying to build in Visual Studio which gives the following error. Project : error PRJ0019: A tool returned an error code from "Copy the executable to HAMR platform" The last few lines of the build log are as follows: Copy the executable to HAMR platform The system cannot find the path specified. Project : error PRJ0019: A tool returned an error code from "Copy the executable to HAMR platform" I understand that there may be a wrong path mentioned in the code but as there is no line number to the error I don't know how to detect the source of the problem

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  • How to populate spinner from mySql database

    - by user1472085
    How do i populate this,I have 2 Spinners in my app and one is for Province and other is for City, when i select Gauteng in province spinner i want my second spinner to show Johannesburg,Pretoria,Centurion and If i select KZN in province i want my second spinner to show Maritsburg and Durban. im using mySql database and i have Province table and City table. Here is My Province table(idprovince,provincename) 1 Gauteng 2 Free-State 3 Limpopo 4 Northen-Cape 5 North-West 6 Western-Cape 7 Eastern-Cape 8 Kwa-Zulu-Natal 9 Mpumalanga and Here is my city table(idcity,cityname,province_idprovince) 1 Johannesburg 1 2 pretoria 1 3 Centurion 1 4 Bloemfontein 2 5 Welkom 2 6 Polokwane 3 7 Phalaborwa 3 8 Potgiersrus 3 9 Tzaneen 3 10 Kimberley 4 11 Upington 4 12 Mafikeng 5 13 Klerksdorp 5 14 Mmabatho 5 15 Potchefstroom 5 16 Brits 5 17 Cape-Town 6 18 Stellenbosch 6 19 George 6 20 Saldhana-Bay 6 21 Bisho 7 22 Port-Elizabeth 7 23 East-London 7 24 Pietermaritzburg 8 25 Durban 8 26 Ulundi 8 27 Richards-Bay 8 28 Newcastle 8 29 Nelspruit 9 30 Witbank 9 31 Middleburg 9 32 Ermelo 9 i will appriciate your help.

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  • How do you setLayoutParams() for an ImageView?

    - by DeadTime
    I want to set the LayoutParams for an ImageView but cant seem to find out the proper way to do it. I can only find documentation in the API for the various ViewGroups, but not an ImageView. Yet the ImageView seems to have this functionality. This code doesn't work... myImageView.setLayoutParams(new ImageView.LayoutParams(30,30)); How do I do it?

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  • PackageManager: Not granting permission

    - by scott
    Im trying to force my phone to go to sleep as soon as i turn my screen off, but whenever i install with adb, packagemanager informs me that it wont grant the permission i need, so my service throws an exception. I was able to install another app called power save mode toggle which has the same permission, and it seems to work, so i should be able to get this to work, right?

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  • How to do the following in ListView

    - by Johnny
    How to do the following stuffs in ListView Only show scroll bar when user flip the list. By default, if the list is more than the screen, there is always a scrollbar on the right side. Is there a way to set this scrollbar only shows when user flip the list? Keep showing the list background image when scrolling. I've set an image as the background of the ListView, but when I scroll the list, the background image will disappear and only shows a black list view background. Is there any way to keep showing the list background image when scrolling? Don't show the shadow indicator. When the list has more items to display, there is a black-blur shadow to indicate user that there are more items. Is there a way to remove this item?

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  • Accessing resources in the package of an application created with xcode/cocoa

    - by Michael Minerva
    I am trying to make a simple that needs to create an NSImage and I want to put the .png file in the resources of my package contents. I added the .png file to my resources directory in Xcode and when I create the applicaiton the .png file shows up in my resources inside package contents but I am havhing trouble figuring out how to reference file here is what I tried: [image initWithContentsOfFile:@"resources/draw-button.png"]; I figured that my package contents would be my current directory so I thought this would work, but it does. How do I reference my resources directory?

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  • In an ExpandableListView, how can I show one additional line at the end of the child results?

    - by fiXedd
    I have created a custom ExpandableListAdapter and everything works properly. What I'd like to be able to do is in each of the groups add a different type of child to the end. I have tried adding 1 to the getChildrenCount() number and then testing isLastChild in the getChildView() method, but that doesn't seem to work. If a group has three children what I have working looks like this: Group NormalChild NormalChild NormalChild But I'd really like something like this: Group NormalChild NormalChild NormalChild AlternateChild The idea being that the AlternateChild could be a link to more info about the group. Any Ideas? EDIT: ListView has addFooterView() which will allow you to add a footer to a whole ListView... wonder how to add them to the ExpandableListView's children, or if it's even possible

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  • ListView from cursor with checkbox

    - by ekawas
    Hi, I have a Listview that looks like the following: checkbox:textview {0 .. n} I have a OnCheckChangedListener that listens for checkbox changes (checkbox has focusable set to false as recommended by http://www.mousetech.com/blog/?p=74). The behaviour that I am looking for is that users can click the checkbox to set its state, and they can click on the listview item to get a description. Currently, checkbox state is saved properly and if you click on an item, then it shows a description. However, if you first change a state and then click to get the description, the checkbox reverts to a prior state. In fact all checkboxes revert back to a prior state. Anyone know how i can get this working? Thanks.

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  • How to parse json with fromJson method

    - by Ankit HTech
    I want to parse my json by fromJson class but I am unable to understand what should be the structure of my class if my json is like below: String json = "{"Result":{"Status":"SUCCESS","Message":""},"Response":{"Token":"ca0d7507-3907-4eed-af19-ad256bc71088","ZoneUrl":"https:\/\/qa.tritononline.com\/","CustomerID":1,"UserID":29,"DefaultLanguageID":1,"ZoneID":1,"IsTritonIntegrated":false,"Language":[{"LanguageId":1,"Language":"English","IsSelected":false}]}}" This is what I want to do Response res = new Response(); Gson gson = new Gson(); res = gson.fromJson(json, Response.class); I want to know what all variable should I take in Response class.

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  • How to draw the "trail" in a maze solving application

    - by snow-spur
    Hello i have designed a maze and i want to draw a path between the cells as the 'person' moves from one cell to the next. So each time i move the cell a line is drawn Also i am using the graphics module The graphics module is an object oriented library Im importing from graphics import* from maze import* my circle which is my cell center = Point(15, 15) c = Circle(center, 12) c.setFill('blue') c.setOutline('yellow') c.draw(win) p1 = Point(c.getCenter().getX(), c.getCenter().getY()) this is my loop if mazez.blockedCount(cloc)> 2: mazez.addDecoration(cloc, "grey") mazez[cloc].deadend = True c.move(-25, 0) p2 = Point(getX(), getY()) line = graphics.Line(p1, p2) cloc.col = cloc.col - 1 Now it says getX not defined every time i press a key is this because of p2???

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  • Turning on screen programmatically

    - by Matroska
    Hi, I would like to unlock screen and switching it on to show a popup on an event trigger. I am able to unlock the screen using newKeyguardLock = km.newKeyguardLock(HANDSFREE); newKeyguardLock.disableKeyguard(); on KeyGuardService but I cannot turn on the screen. I am using wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, HANDSFREE); wl.acquire(); but with no success. The screen still remains off. How can I achieve this? Thanks in advance. Tobia Loschiavo

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  • How can I switch the activity of the content of a tab in Tabhost

    - by hap497
    Hi, I have created a TabHost and in 1 of the tab, I have added the content using mTabHost.addTab(mTabHost.newTabSpec("tab1") .setIndicator(getString(R.string.dialerIconLabel), getResources().getDrawable(R.drawable.ic_tab_dialer)) .setContent(intent)); Is it possible for me to switch the content's activity programatically after I called 'addTab of TabHost'? Thank you.

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  • Get the address from the contacts.

    - by KKC
    can someone help me with the following code to get the address stored from the contact?? THANK YOU! // Extract the address. String where = ContactsContract.ContactMethods.PERSON_ID + " == " + id + " AND " + ContactsContract.ContactMethods.KIND + " == " + ContactsContract.KIND_POSTAL; addressCursor = context.getContentResolver().query(ContactsContract.ContactMethods.CONTENT_URI, null, where, null, null); // Extract the postal address from the cursor int postalAddress = addressCursor.getColumnIndexOrThrow(ContactsContract.ContactMethodsColumns.DATA); String address = ""; if (addressCursor.moveToFirst()) address = addressCursor.getString(postalAddress); addressCursor.close();

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  • How to convert String format dates to Date format dates?

    - by Jani Bela
    I have a string with dates it looks like: "20120316 20120317 20120318" ... I store this dates in this format, but I would like to make a Date array from these numbers with the format 03/16 03/17 03/18 ... So far: String[] DailyDatasOnce2 = DatesOnce.split(" "); DailyDatasOnce = new String[DailyDatasOnce2.length]; for (int i=0;i< (DailyDatasOnce2.length) ;i++){ DailyDatasOnce[i]=DailyDatasOnce2[i]; } datumok = new Date[DailyDatasOnce.length]; for (int i=0;i< (DailyDatasOnce.length) ;i++){ SimpleDateFormat curFormater = new SimpleDateFormat("yyyyMMdd"); java.util.Date dateObj = null; java.util.Date dateObj2 = null; try { dateObj = curFormater.parse(DailyDatasOnce[i]); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } SimpleDateFormat postFormater = new SimpleDateFormat("MM/dd"); String newDateStr = postFormater.format(dateObj); try { dateObj2 = curFormater.parse(newDateStr); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } datumok[i] = dateObj2; } So first I make a string array with the string dates (DailyDatasOnce), maybe that first for loop is useless but i can skip it. Now I make a Date array and I want to put the dates into it. I format the dates to format I want, then I try to convert them to Date format. Until the String newDateStr it is working, I manage to change the type of the date. But I get syntax error: Type mismatch: Cannot convert from java.util.date to java.sql.data. I suspect the problem but if it is not possible, how can i do this?

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  • Dynamically change ViewPagerIndicator titles

    - by msal
    My current project uses some ListFragments to show rows of data. The rows get updated dynamically every some seconds. The amount of rows varies with every update and in every ListFragment. I would like to show the amount of rows to the user, and think that the perfect place for that would be next to the Fragment's title in the ViewPagerIndicator. I provided a sample image for better comprehension: Sadly I am pretty clueless how to achieve this. I tried the following: public class PagerAdapter extends FragmentPagerAdapter { private int numOne = 0; private int numTwo = 0; // ... @Override public CharSequence getPageTitle(int position) { switch (position) { case 0: return "List 1 (" + numOne + ")"; case 1: return "List 2 (" + numTwo + ")"; default: return ""; } public void setNumOne(int num) { this.numOne = num; } public void setNumTwo(int num) { this.numTwo = num; } } When I now call the setNumXXX() method, nothing happens, until I move between fragments, what seems to trigger the getPageTitle() to fire. My question is: How can I force an update of the title(s), everytime when the num value changes?

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