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  • Add progressbar to BZip2CompressorInputStream

    - by bordeux
    This is my code: public void extract(String input_f, String output_f){ int buffersize = 1024; FileInputStream in; try { in = new FileInputStream(input_f); FileOutputStream out = new FileOutputStream(output_f); BZip2CompressorInputStream bzIn = new BZip2CompressorInputStream(in); final byte[] buffer = new byte[buffersize]; int n = 0; while (-1 != (n = bzIn.read(buffer))) { out.write(buffer, 0, n); } out.close(); bzIn.close(); } catch (Exception e) { throw new Error(e.getMessage()); } } How can i add progress bar to extract task, or how can i get the compressed file size?

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  • Prevent Activity from saving state when user selects back button

    - by martinjd
    I have an Activity with a list that is bound to a ListAdapter reading data into a ArrayList from a database. All is well when the data is first loaded. While the Activity is open and the list is being displayed it is possible and likely that the data in the database will be updated by a service but the list does not reflect the changes because the ArrayList does not know about the changes. If the Activity is no longer in the foreground as would be the case if the user goes to the home screen and then is brought back to the foreground I would like for the Activity to not display what it did prior but rather reload the data using the ListAdapter the view is bound to. I think something needs to call finish() but I am not sure what. This is what I have in the Activity. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setUpViews(); app = (MyApplication) getApplication(); adapter = new MyListAdapter(this, app.getMyEvents()); setListAdapter(adapter); } @Override protected void onResume() { super.onResume(); adapter.forceReload(); }

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  • Recover lost code from compiled apk

    - by AlexRamallo
    I have an issue here..and its making me really nervous. I was working on this game, and it was going great, so I took a copy of it on my laptop to work do some work while away from my computer. long story short, hard-drive failure + poor back ups led to me losing a very important class. Is there a way to decompile the apk to retrieve the bit of code that was lost? It isn't overly complicated or sophisticated, its just that its impossible to re-write it without reading every. single. line. of. code. in the entire application since it initializes a LOT of classes and loads a bunch of stuff in a specific way. With a quick google search I was able to find apktool, which decompiles it into a bunch of .smali files, which I don't think were designed for human reading. All I need to recover is one very big method in the class. I found the smali file that contains it and I think I found the line where it starts. something like .method public declared-synchronized load(Lcom/X/X/game/X;)I Anyone help would be appreciated since I would have to scrap the entire game without this method.

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  • What happens to thread as onDestroy is called when device is rotated

    - by Lakshmie
    I would like to know as to what will happen to the thread which has been created by an activity and the device is rotated. I have observed that the onDestroy method is called when this happens. Will the thread be killed too? If the thread is not killed, how can I reassociate the thread with the activity as a new instance of the activity is created on rotation. Thanks, Lakshmie

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  • Should we EVER use dp values for width/height?

    - by sandalone
    I've come across a project done by some other team which I have to fix. They used dp values for images' width/height. When I tried to adopt the layout for some tablets and/or mobiles, I've faced a lot of troubles. For example, the image of 40x40 dp has top padding of 15dp. When such image is loaded by some new mobile screen, the image is not where is was supposed to be - it's either shifted or distorted or of the wrong size. Now I need to propose a redesign of the whole app and I need some advise from the more experienced community. Should I abandon such layout policy (described abobe) and do like this: make the image with the size of 40x40 px position the image for the mdpi screen set its height/width to wrap_content do like this for other images after I finish layout for mdpi, resize each image for ldpi, hdpi and xhdpi screens in case of a special mobile/tablet, make a special set of images + xml files Is there a way when you would advise to use the explicit size of some images? Do you advise setting the size of images in xml layout or setting size via photoshop or similar graphics tools and then resize images for other screen sizes or screen densities?

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  • dialog.show() crashes my application, why?

    - by user1739462
    I'm new in adroid. I like to do things when the color reach a value. I like (for example) show the alert if r is bigger than 30, but the application go in crash. Thank for very simple answares. public class MainActivity extends Activity { private AlertDialog dialog; private AlertDialog.Builder builder; private BackgroundColors view; public class BackgroundColors extends SurfaceView implements Runnable { public int grand=0; public int step=0; private boolean flip=true; private Thread thread; private boolean running; private SurfaceHolder holder; public BackgroundColors(Context context) { super(context); } Inside this loop while running is true. is impossible to show dialogs ?? public void run() { int r = 0; while (running){ if (holder.getSurface().isValid()){ Canvas canvas = holder.lockCanvas(); if (r > 250) r = 0; r += 10; if (r>30 && flip){ flip=false; // ********************************* dialog.show(); // ********************************* // CRASH !! } try { Thread.sleep(300); } catch(InterruptedException e) { e.printStackTrace(); } canvas.drawARGB(255, r, 255, 255); holder.unlockCanvasAndPost(canvas); } } } public void start() { running = true; thread = new Thread(this); holder = this.getHolder(); thread.start(); } public void stop() { running = false; boolean retry = true; while (retry){ try { thread.join(); retry = false; } catch(InterruptedException e) { retry = true; } } } public boolean onTouchEvent(MotionEvent e){ dialog.show(); return false; } protected void onSizeChanged(int xNew, int yNew, int xOld, int yOld){ super.onSizeChanged(xNew, yNew, xOld, yOld); grand = xNew; step =grand/15; } } public void onCreate(Bundle b) { super.onCreate(b); view = new BackgroundColors(this); this.setContentView(view); builder = new AlertDialog.Builder(this); builder.setMessage("ciao"); builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.d("Basic", "It worked"); } }); dialog = builder.create(); } public void onPause(){ super.onPause(); view.stop(); } public void onResume(){ super.onResume(); view.start(); } }

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  • How to prevent application thievery?

    - by Berdon Magnus
    Hey, I was wondering what the most effective way of preventing people from stealing my application (downloading a copy of the .apk online rather than buying it). I've spent a lot of time on one in particular (Droidbox) and won't be releasing Sync until I can guarantee that the people who are providing illegal copies of the pro version aren't able to. Anyone implemented this? I've tried checking my package signature verses an the signature of an unsigned copy but it appears to be the same - perhaps I'm doing something incorrectly here. I'm unsure whether people actually distribute the signed .apk in which case I don't think signature validation would work to begin with...

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  • Can we instantiate abstract class?

    - by satheesh.droid
    I don't understand whether we can instantiate abstract class by any means because I have read we can inherit the abstract class but in have found we can create an object by calling method of other class.For example LocationProvider is an abstract class but we can create object for the same by calling getProvider() function in LocationManager class. By the following code LocationManager lm=getSystemService(Context.LOCATION_PROVIDER) LocationProvider lp=lm.getProvider("gps");

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  • Adding a Main Menu to a Game in Xcode

    - by MasenB
    I am about done with an Objective - C Sprite Kit Development course on Lynda, and I wanted to expand on the app the course had me make! It was made so that once I open the app, it started brick breaker, and then there are more classes for additional scenes like Game Over and Restart! I was wondering if someone could tell me how to make a Main Menu view controller that came before the Brick Breaker screen! Thanks, Masen

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  • How to inflate a view in a determined position?

    - by Tivie
    I have an activity with an "Add" and a "Delete" button. The "Add Button" inflates a view, the "Delete Button" removes a selected View. When I inflate a view with the "Add Button", it is automatically drawn below any previously infalted view. I would like to give the user the possibility to move each inflated view up and down, so he could change the order they are show in screen (in a drag'n'drop kind of effect) +---------------------+ +---------------------+ | +-----------------+ | | +-----------------+ | | | View 1 | | | | View 2 | | | +-----------------+ | | +-----------------+ | | | --> | | | +-----------------+ | | +-----------------+ | | | View 2 | | | | View 1 | | | +-----------------+ | | +-----------------+ | +---------------------+ +---------------------+ Is it possible to specify the "position" in which each view is inflated? (for instance, below or above the currently selected view?) If not, what is the best way to accomplish the desired effect? (feel free to ask for any piece of code, if you think it might help)

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  • Adding on touch event to images inside gridview

    - by Steve
    I have a gridview where each item has a image and a textview (an app), i added the onItemClick to the gridview in order to launch the app, i also removed the orange selection and made selector in xml so when pressed the text would change to grey and on release it would return to white. My problem is that i need the image to apply an alpha value when pressed and restore the previous alpha on release i tested a lot of ways and none did worked correctly. I came close with the updated answer from the autor of the question: How to set alpha value for drawable in a StateListDrawable?, but some how the state pressed never gets called, i don´t know if this is because i am using the onitemClick to launch the app or not. Also i since i can´t define the alpha on imageview xml i don´t know what else to do Any help will be appreciated

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  • Using Regular Expressions

    - by bebeTech
    I am having problems trying to use the regular expression that I used in JavaScript. On a web page, you may have: <b>Renewal Date:</b> 03 May 2010</td> I just want to be able to pull out the 03 May 2010, remembering that a webpage has more than just the above content. The way I currently perform this using JavaScript is: DateStr = /<b>Renewal Date:<\/b>(.+?)<\/td>/.exec(returnedHTMLPage); I tried to follow some tutorials on java.util.regex.Pattern and java.util.regex.Matcher with no luck. I can't seem to be able to translate (.+?) into something they can understand?? thanks, Noeneel

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  • Transparent Dialog Alignment

    - by feragusper
    I'm trying to get a custom dialog with a transparent background doing this way: this.getWindow().setBackgroundDrawableResource(R.drawable.transparent); (where "R.drawable.transparent" is a reference to the color "#00000000") The weird issue on this is that I can't align my dialog window. It's always aligned to the left, even if I implicit set the Gravity of the window using: this.getWindow().setGravity(Gravity.CENTER); And if I just comment the line which set the transparent background, the alignment works fine. Any help would be much appreciated! Thanks.

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  • Which type of data can be garbage collected when app is in background?

    - by Neoh
    Let's say I start from activity A - activity B. While in activity B I press home to exit. After a long time, gc may be called because other apps take higher priority. My question is, which of the following type of data will be garbage collected (I'm pretty sure static fields can be garbage collected any time but I'm not sure about these): i) fields that are declared final or static final ii) intent and its data that I passed from activity A to activity B iii) onSavedInstanceState when orientation is changed during the app running I ask this because I want to ensure that my app won't crash when I restore activity B from background after a long period.

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  • Replace every word with tag

    - by Sherif elKhatib
    JAVASCRIPT or JAVA solution needed The solution I am looking for could use java or javascript. I have the html code in a string so I could manipulate it before using it with java or afterwards with javascript. problem Anyway, I have to wrap each word with a tag. For example: <html> ... > Hello every one, cheers < ... </html> should be changed to <html> ... > <word>Hello</word> <word>every</word> <word>one</word>, <word>cheers</word> < ... </html> JAVASCRIPT hint I am using the following code to highlight a word; however, this will highlight the whole text belonging to a certain tag. When each word is a tag, this will work to some extent. If there is a substitute that will allow me to highlight a word at a certain position, it would also be a solution. function highlightElementAtPoint(xOrdinate, yOrdinate) { var theElement = document.elementFromPoint(xOrdinate, yOrdinate); selectedElement = theElement; theElement.style.backgroundColor = "yellow"; var theName = theElement.nodeName; var theArray = document.getElementsByTagName(theName); var theIndex = -1; for (i = 0; i < theArray.length; i++) { if (theArray[i] == theElement) { theIndex = i; } } window.androidselection.selected(theElement.innerHTML); return theName + " " + theIndex; }

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  • Getting size of a webpage before parsing it

    - by user2869844
    I am trying to parse a webpage using jsoup and all is working good using this code: class DownloadSearchResultsTask extends AsyncTask<String, Integer, ArrayList> { private String link = "link"; private String title = "title"; private String vote = "vote"; private String age = "age"; private String size = "size"; private String seeders = "seeders"; private String leechers = "leachers"; @Override protected void onPreExecute() { // TODO Auto-generated method stub super.onPreExecute(); } @Override protected ArrayList doInBackground(String... params) { // TODO Auto-generated method stub ArrayList <HashMap<String, String>> searchResult = new ArrayList<HashMap<String, String>>(); HashMap<String, String> map; String link, title, vote, age, size, seeders, leechers; try { HttpURLConnection httpURLConnection=(HttpURLConnection) new URL("http://www.facebook.com").openConnection(); Log.d("VIVZ", httpURLConnection.getContentLength()+""); } catch (MalformedURLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } Document mDocument; try { long l1=System.nanoTime(); Log.e("VIVZ",l1+""); mDocument = Jsoup .connect(params[0]) .userAgent( "Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6") .referrer("http://www.google.com").get(); long l2=System.nanoTime(); Log.e("VIVZ",(l2-l1)+""); Elements mResults = mDocument.select("div.results dl"); for (Element result : mResults) { map = new HashMap<String, String>(); Elements elements = result.select("dt a"); for (Element linkAndTitle : elements) { link = linkAndTitle.attr("abs:href"); title = linkAndTitle.text(); map.put(this.link, link); map.put(this.title, title); } elements = result.select("dd span.v"); for (Element v : elements) { vote = v.text(); map.put(this.vote, vote); } elements = result.select("dd span.a"); for (Element a : elements) { age = a.text(); map.put(this.age, age); } elements = result.select("dd span.s"); for (Element s : elements) { size = s.text(); map.put(this.size, size); } elements = result.select("dd span.u"); for (Element u : elements) { seeders = u.text(); map.put(this.seeders, seeders); } elements = result.select("dd span.d"); for (Element d : elements) { leechers = d.text(); map.put(this.leechers, leechers); } searchResult.add(map); } Log.e("VIVZ", searchResult.toString()); return searchResult; } catch (IOException e) { // TODO Auto-generated catch block Log.e("VIVZ",e+""); } return null; } @Override protected void onPostExecute(ArrayList result) { // TODO Auto-generated method stub super.onPostExecute(result); } } The problem is i want to get the size of page before parsing it and show a Determinate progress bar please help me ..... thanx in advance

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  • How to handle null response for json object

    - by user1494754
    I get a JSON response as { "edges": [], "nodes": [] } how to check if the objects has null values and handle the case?? JSONObject jobj = new JSONObject(line); JSONArray jArray = jobj.getJSONArray("edges"); if(jArray.length()!=0) { for(int i=0;i<jArray.length();i++){ JSONObject json_data = jArray.getJSONObject(i); x.add((float) json_data.getInt("x")); y.add((float) json_data.getInt("y")); end This retrurns me : org.json.JSONException: end of input at character 0 of

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