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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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  • What causes this retainAll exception?

    - by Joren
    java.lang.UnsupportedOperationException: This operation is not supported on Query Results at org.datanucleus.store.query.AbstractQueryResult.contains(AbstractQueryResult.java:250) at java.util.AbstractCollection.retainAll(AbstractCollection.java:369) at namespace.MyServlet.doGet(MyServlet.java:101) I'm attempting to take one list I retrieved from a datastore query, and keep only the results which are also in a list I retrieved from a list of keys. Both my lists are populated as expected, but I can't seem to user retainAll on either one of them. // List<Data> listOne = new ArrayList(query.execute(theQuery)); // DatastoreService ds = DatastoreServiceFactory.getDatastoreService(); // List<Data> listTwo = new ArrayList(ds.get(keys).values()); // listOne.retainAll(listTwo);

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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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  • 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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  • SoundPool repeating issue for Samsung Galaxy S3

    - by Alaa Eldin
    I'm trying to play a background sound for my application, I use SoundPool class, my problem is that, sound plays well only when I set the loop parameter with zero value, but it doesn't work for any other value. My code for initialization is: soundpool = new SoundPool(4, AudioManager.STREAM_MUSIC, 0); soundsMap = new HashMap<Integer, Integer>(); soundsMap.put(1, soundpool.load(this, R.raw.soundfile_1, 1)); soundsMap.put(2, soundpool.load(this, R.raw.soundfile_2, 1)); my code for playing is soundpool.play(1, 0.9f, 0.9f, 1, -1, 1f); as I mentioned sound works when I put (0) instead of (-1) for the loop value, anyone has any idea why (-1) or any value other than (0) doesn't work (there is no output sound) ?

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  • Optimizing tasks to reduce CPU in a trading application

    - by Joel
    Hello, I have designed a trading application that handles customers stocks investment portfolio. I am using two datastore kinds: Stocks - Contains unique stock name and its daily percent change. UserTransactions - Contains information regarding a specific purchase of a stock made by a user : the value of the purchase along with a reference to Stock for the current purchase. db.Model python modules: class Stocks (db.Model): stockname = db.StringProperty(multiline=True) dailyPercentChange=db.FloatProperty(default=1.0) class UserTransactions (db.Model): buyer = db.UserProperty() value=db.FloatProperty() stockref = db.ReferenceProperty(Stocks) Once an hour I need to update the database: update the daily percent change in Stocks and then update the value of all entities in UserTransactions that refer to that stock. The following python module iterates over all the stocks, update the dailyPercentChange property, and invoke a task to go over all UserTransactions entities which refer to the stock and update their value: Stocks.py # Iterate over all stocks in datastore for stock in Stocks.all(): # update daily percent change in datastore db.run_in_transaction(updateStockTxn, stock.key()) # create a task to update all user transactions entities referring to this stock taskqueue.add(url='/task', params={'stock_key': str(stock.key(), 'value' : self.request.get ('some_val_for_stock') }) def updateStockTxn(stock_key): #fetch the stock again - necessary to avoid concurrency updates stock = db.get(stock_key) stock.dailyPercentChange= data.get('some_val_for_stock') # I get this value from outside ... some more calculations here ... stock.put() Task.py (/task) # Amount of transaction per task amountPerCall=10 stock=db.get(self.request.get("stock_key")) # Get all user transactions which point to current stock user_transaction_query=stock.usertransactions_set cursor=self.request.get("cursor") if cursor: user_transaction_query.with_cursor(cursor) # Spawn another task if more than 10 transactions are in datastore transactions = user_transaction_query.fetch(amountPerCall) if len(transactions)==amountPerCall: taskqueue.add(url='/task', params={'stock_key': str(stock.key(), 'value' : self.request.get ('some_val_for_stock'), 'cursor': user_transaction_query.cursor() }) # Iterate over all transaction pointing to stock and update their value for transaction in transactions: db.run_in_transaction(updateUserTransactionTxn, transaction.key()) def updateUserTransactionTxn(transaction_key): #fetch the transaction again - necessary to avoid concurrency updates transaction = db.get(transaction_key) transaction.value= transaction.value* self.request.get ('some_val_for_stock') db.put(transaction) The problem: Currently the system works great, but the problem is that it is not scaling well… I have around 100 Stocks with 300 User Transactions, and I run the update every hour. In the dashboard, I see that the task.py takes around 65% of the CPU (Stock.py takes around 20%-30%) and I am using almost all of the 6.5 free CPU hours given to me by app engine. I have no problem to enable billing and pay for additional CPU, but the problem is the scaling of the system… Using 6.5 CPU hours for 100 stocks is very poor. I was wondering, given the requirements of the system as mentioned above, if there is a better and more efficient implementation (or just a small change that can help with the current implemntation) than the one presented here. Thanks!! Joel

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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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  • 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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  • how to find Signal Strength of connected bluetooth devices

    - by Rajendar
    Hi, In one of my application I need to display all the Wifi and bluetooth devices which are paired to my mobile and it's Signal Strengths .Wifi side it is ok for me to display signal strength(RSSI).But i got a problem at Bluetooth side.I searched for the method which is suitable for this task,i found one method that is intent.getShortExtra(BluetoothDevice.EXTRA_RSSI, Short.MIN_VALUE); It is displaying only the new device RSSI which is not paired to my mobile.Is there any idea for getting all bluetooth devices RSSI.Plz give me idea or source code ?

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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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  • getComputedStyle text-decoration inherit

    - by Guilherme Nascimento
    getComputedStyle fails to get text-decoration property inherited, but can get font-size. Failed in Firefox 25 and GoogleChrome 30. Note: In Internet Explorer 10 work! <!DOCTYPE html> <html> <style> #parent { font-size: 38px; text-decoration: underline; } </style> <body> <div id="parent"> <p id="child">Test</p> </div> <script> var elem = document.getElementById("child"); document.write("text-decoration:"+window.getComputedStyle(elem).getPropertyValue("text-decoration")); document.write("<br>"); document.write("text-decoration:"+document.defaultView.getComputedStyle(elem).getPropertyValue("text-decoration")); document.write("<hr>"); document.write("font-size:"+window.getComputedStyle(elem).getPropertyValue("font-size")); document.write("<br>"); document.write("font-size:"+document.defaultView.getComputedStyle(elem).getPropertyValue("font-size")); </script> </body> </html> It is a fault of mine, or browsers that failed?

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  • Valid Dates in AppEngine forms (Beginner)

    - by codingJoe
    In AppEngine, I have a form that prompts a user for a date. The problem is that when the clicks enter there is an error: "Enter a Valid Date" How do I make my Form accept (for example) %d-%b-%Y as the date format? Is there a more elegant way to accomplish this? # Model and Forms class Task(db.Model): name=db.StringProperty() due=db.DateProperty() class TaskForm(djangoforms.ModelForm): class Meta: model = Task # my get function has the following. # using "now" for example. Could just as well be next Friday. tmStart = datetime.now() form = TaskForm(initial={'due': tmStart.strftime("%d-%b-%Y")}) template_values = {'form': form }

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  • Text Getting weird when jquery animate fade on chrome

    - by Robson Silveira
    JavaScript $(function() { $('#lol').hover(function() { $(this).stop().animate({opacity:0.5}); },function() { $(this).stop().animate({opacity:1}); }); }); CSS #lol { padding:20px; background-color:#FF0000; color:#FFF; font-size:15px; font-family:arial; width:300px; opacity:1; filter:alpha(opacity=100); position:relative; } HTML <div id="lol">text</div> In Firefox and Internet Explorer it works fine but in Chrome, the text get weird on fade -- it look like that text is losing cleartype. How can I fix it? How it looks on fade: Click to see

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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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  • 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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  • 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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  • Checkbox 'Checked' in ListView is restored after scrolling

    - by adrianrdzv
    I'm having the following problem: I have a ListActivity, which its ListView is composed by an icon, text and a checkbox (using LayoutInflater). The Adapter for the ListView extends ResourceCursorAdapter (i.e. the data source of the ListView is retrieved from a database, also the Checked status of each row) Everything works pretty Ok, except when I uncheck/check the checkbox in any row, if I scroll down until the modified checkbox is no longer visible, and then scroll up, the checkbox is restored to its original state. The database IS modified, this is not the problem (i.e. if I modify a row and exit the activity, and enter again, the modified row is displayed Ok). My guess is that this has something to do on how the list is rendered because for some reason the ListView "renders" the original state of all rows when it was first populated when scrolling. I've been looking around for this bug but I don't find anybody that had this problem. I appreciate any advice you have.

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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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