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  • Double # showing 0 on android

    - by Dave
    I'm embarrassed to ask this question, but after 45 minutes of not finding a solution I will resort to public humiliation. I have a number that is being divided by another number and I'm storing that number in a double variable. The numbers are randomly generated, but debugging the app shows that both numbers are in fact being generated. Lets just say the numbers are 476 & 733. I then take the numbers and divide them to get the percentage 476/733 = .64 I then print out the variable and it's always set to 0. I've tried using DecimalFormat and NumberFormat. No matter what I try though it always says the variable is 0. I know there is something simple that I'm missing, I just can't find it =/.

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  • Android App crashing on one device only

    - by Daniel1402
    I am working on a new game that works perfectly on my test devices, 7-inch tablets and smartphones. But it crashes on my Galaxy Tab2 10-inch tablet with an Out of memory error. It always crashes when I start to play a second game! I have spent a full week checking the codes and I cannot figure out what is wrong. When I play from the menu screen, everything works fine. When I want to replay a game level from the level screen, the game will crash on the second launch. The level screen is made of 3 fragments, each with 32 buttons (4kB in size). I tried to keep only one fragment in memory with viewPager.setOffscreenPageLimit(1); but it does not solve the problem. Could someone stir me in some direction as to where to look for the potential problem? Why is the 10-inch tablet the only one to crash? Thanks.

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  • Android Icon Duplicates in Application Dock

    - by datguywhowanders
    For some odd reason, my project is generating two icons, same name, launches the same project, in the app drawer. I can't figure out what is causing this. Does anyone have any suggestions? Link to screenshot The M in the white circle is my default icon. If you view the screenshot, you'll see it appears twice. I've checked the applications area, and it is only installed once.

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  • Android SurfaceView/Canvas flickering after trying to clear it

    - by Mark D
    So I am trying to clear the Canvas using canvas.drawColor(Color.BLACK) but if I just call this once, the display flickers and displays the old drawing which should have been covered up by the drawColor. Here is the important bits of my code - public void update() { //This method is called by a Thread Canvas canvas = holder.lockCanvas(null); if (canvas != null) { onDraw(canvas); } holder.unlockCanvasAndPost(canvas); } @Override protected void onDraw(Canvas canvas) { if (toClear) { canvas.drawColor(Color.BLACK); //if this is not set to change back to false, it does not flicker toClear = false; } //Draw some objects that are moving around } public void clearScreen() { //This method is called when the user pressed a button toClear = true; } After Googling around a litte, I heard about double buffering but came to the understanding that lockCanvas() and unlockCanvasAndPost() should handle this for me. What is going wrong here?

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  • Android Java error handling XML file

    - by Paul
    I'm using SAX and XML reader to read XML weather info from the web and it works fine if the page exists. But if for instance the user inputs an invalid city, zip etc the XML page that gets read from is empty and the app force closes with nullpointerexception. The area that generates the error is here right at open inputstream. Any suggestions?: SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = null; try { sp = spf.newSAXParser(); } catch (ParserConfigurationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SAXException e) { // TODO Auto-generated catch block e.printStackTrace(); } /* Get the XMLReader of the SAXParser we created. */ XMLReader xr = null; try { xr = sp.getXMLReader(); } catch (SAXException e) { // TODO Auto-generated catch block e.printStackTrace(); } /* Create a new ContentHandler and apply it to the XML-Reader*/ WeatherHandler myExampleHandler = new WeatherHandler(); xr.setContentHandler(myExampleHandler); /* Parse the xml-data from our URL. */ try { xr.parse(new InputSource(url.openStream())); parsedWeatherDataSet = myExampleHandler.getParsedData(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SAXException e) { // TODO Auto-generated catch block e.printStackTrace(); } return parsedWeatherDataSet.toString();

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  • Change Text on Landscape mode with Java Code and not XML (Android)

    - by Chowza
    I wrote my layout entirely in java code because it was just more convenient. (I had a lot of textViews and using for statements were more convenient). However, my TextViews require the day of the week and in portrait mode, I would like to cut the day of the week to a short form. For example, I want "Sunday" to show "Sun" for portrait mode, but "Sunday" for landscape mode. I understand how to do this in XML files, but how do I do it in code? I.e. sample code: LinearLayout parent = new LinearLayout(getApplicationContext()); parent.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT)); TextView example = new TextView; example.setLayoutParams(mparams); example.setText("Sunday"); //<--make this "Sun" when in portrait but "Sunday" in landscape parent.addView(example);

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  • Android Timer update UI between multiple tasks

    - by Rilcon42
    I have tried multiple ways to have a single persistent timer update the ui in multiple activities, and nothing seems to work. I have tried an AsyncTask, a Handler, and a CountDownTimer. The code below does not execute the first Log.i statement.... Is there a better way to start the timer (which must be called from another class) in Main (which is the only persistent class)? public static void MainLawTimer() { MainActivity.lawTimer = new CountDownTimer(MainActivity.timeLeft, 1000) { public void onTick(long millisUntilFinished) { Log.i("aaa","Timer running. Time left: "+MainActivity.timeLeft); MainActivity.timeLeft--; if(MainActivity.timeLeft<=0) { //do stuff } else { //call method in another class } }

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  • Password Protected Android App

    - by Caution Continues
    I wana make a security app and in case of stolen or lost my app must not be uninstalled without taking password. yes It is possible to make such an app that can take password before getting uninstall.. My friend Aditya Nikhade has made this app :) .But he is not giving me this secrete recipe:( Install this app Findroid from google Play. In this app first you need to unlock your app then only u can uninstall it. So please help me how to crack this technique.. I searched and got some incomplete answer in that we can declare a receiver of type PACKAGED_REMOVED but i want to know how can I stop if my app is being uninstalled. I am little close to solution of it. I am working/studying on Device Administrator. Please paste code snippet if anyone have. Thanks a Ton in advanced....!!!

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  • ontouch - Switching positions of two views(images) in Android

    - by idish
    I've been looking for that 2 days long and haven't found anything related to it. I'll give an example for my goal. Let's say I have 2 images positioned side by side horizontally. I want the user to be able to switch their positions onlongtouch listener. so let's say that the first image was on the left and the second was on the right side, after switching positions between them, the first image would be in the right and the second would be on the left side. Basically, it is just like in the launcher where you can switch apps positions. Please, if anything is not clear for you, I would like to know, and I'll try to explain it better, thank you.

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  • Data Structure Used For SMS Messages In Android

    - by Greenhouse Gases
    Does anybody know what data structures are used to the store messages in an SMS client app, and whether there is an existing API for this. I was perhaps looking at implementing a link list for the purpose but if the work has already been done in an API then perhaps it would be unnecessary to commit time to the task that could be spent programming other parts. Many thanks

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  • Android show driving direction route between two geopoints

    - by kendrelaxman
    I have googled for 2-3 days now, but I am not able to get the perfect solution for my problem. I need to show the route between two geo points (Not a straight line but need to show driving direction kind of route) but I am not able to find any solution to this. I had come across the solution in this question. But I guess the solution also not working. If you can help me out that will be great. I found the solution Look for answer bellow...

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  • Android App Support Options

    - by Pughjl
    I've got a free app I'm planning on submitting to the marketplace. Looking over the submission form I see they expect a web site or email for support. Users?! I've got to worry about users if I submit an app? I suppose I would like to get some abuse from users, but I don't want to go broke doing it. So what are my options? I have a web site--I suppose I could install forum software on it--that sounds like a lot of work though. Some apps reference a blogspot page--or I could use my Word Press site. They seems a bit disorganized for getting user feedback though.

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  • android question about service and the method onstartcommand

    - by user516883
    In a service class there is a method to start the service. If that service gets done executing does it runs onstartcommand from the beginning? Is onstartcommand sorta like a loop as long as the service is running. For example i have onstartcommand { int x = 0; if(x == 0){ } else{ } } After that is complete does it run it again. If you know that answer please explain. I have read google explanation of services and it did not explain that part very well. Is onstartcommand sorta like a loop as long as the service is runnning

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  • loop for Cursor1.moveToPosition() in android

    - by Edward Sullen
    I want to get data in the first column of all row from my database and convert to String[] ... List<String> item1 = new ArrayList<String>(); // c is a cursor which pointed from a database for(int i=0;i<=nombre_row;i++) { c.moveToPosition(i); item1.add(c.getString(0)); } String[] strarray = new String[item1.size()]; item1.toArray(strarray ); I've tried to command step by step, and found that the problem is in the Loop for.... Please help... thanks in advance for all answer.

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  • changing the intensity of lighten/darken on bitmaps using PorterDuffXfermode in the Android Paint class

    - by user1116836
    Ok my orignal question has changed. How do i change the intensity of how something like this is effected? DayToNight.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); in my dream world it would have worked like this DayToNight.setXfermode(new PorterDuffXfermode(Mode.DST_IN(10))); the 10 being a level of intensity. An example would be if I had a flickering candle, when the candle burns bright I want the bitmaps I am drawing to the screen to retain their origanol color and brightness, when it flickers I want the bitmaps to be almost blacked out, and I want to darken the Bitmaps as the light dims. I have equations, timers and all that figured out, just not how to actually apply it to change the color/brightness. Maybe burning the images is what im looking for? I just want to change the lightness lol. I feel like using paint.setShader might be a solution, but the information in this area is pretty limited from what i have been able to find. Any help would be appreciated. edit: to be crystal clear, i am looking for a way to lighten/darken bitmaps as I draw them to the canvas

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  • When to use a service in Android

    - by Computerish
    Hi everyone, I have a class that fetches data in response to button presses in the main activity. Unfortunately, I keep running into problems because this class is not an Activity or a Service. For example, without a Context I cannot translate a resource id into a string: getString(R.string.example_string); // Doesn't work Should I make this class into a Service and have the main Activity stop the class when it is closed? Should I pass the Context from the Activity into this class like this? MyClass c = new MyClass(this); Or is there some better way to handle this problem? This issue also comes up when I try to send a Toast from this class.

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  • load new page-Android XML

    - by ranjanarr
    I have three xml layout pages, 1.welcome screen (with "next " button) and clicking on next button should bring second page 2.welcome page with ("register" button) this takes to another window/page 3. with name and other details. I have all the three pages GUI built i.e the xml file , how to put them all together and get them working.

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