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  • Compass accuracy dilemma

    - by mob1lejunkie
    I need to build compass for my application. From reading the documentation it seems there are two reasonable ways of doing this: Sensor.TYPE_ORIENTATION method: This is the easy way of doing it. The problem with this is it is not accurate. When I compare my reading with Snaptic Compass it is about 10-15 degress off which for my purposes is unacceptable. Sensor.TYPE_ACCELEROMETER, Sensor.TYPE_MAGNETIC_FIELD and getRotationMatrix() in conjunction with remapCoordinateSystem() and getOrientation() method: The documentation says this "is usually more accurate". The problem is regardless of the delay I register with listener the compass goes crazy even when the device is stationary on flat surface. Any suggestions for solving this problem will be greatly appreciated.

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  • Noob Droid Question regarding random number

    - by Pete Herbert Penito
    Brand new to droid programming, but would love to learn as much as possible, so I finally got my emulator working correctly, I even got a hello world button to work, I'm attempting to make this button display a random number, I've googled this and came up with this code: Random generator = new Random(); int n = generator.nextInt(n); I fixed the Random function by including some Random java utility. I'm assuming this code above goes in the .java file of the project, so my button code looks as follows (tested and works): PopUpText.makeText(v.getContext(), "Hello World", PopUpText.LENGTH_LONG).show(); I figured I could replace "Hello World" with n to display the number in the box, however the following error is stopping the compile: The local variable n may not have been initialized Any ideas why this is happening? Any advice would be hugely appreciated.

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  • Binding Jar Library

    - by Juliano
    I'm trying to bind a jar library (jCIFS) on MFA, but i'm stuck on some errors, like this one: 'Jcifs.Util.MD4' does not implement inherited abstract member 'Java.Security.MessageDigestSpi.EngineDigest() After some research, i found some topics about this, telling to edit the metadata to change the permissions of the classes, like this: <attr path="/api/package[@name='java.security']/class[@name='MessageDigestSpi']/method[@name='engineDigest']" name="visibility">public</attr> But the error didn't change, and a still won't get what this error means. Anyone ? Thanks.

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  • Accessing database problem

    - by anarche
    Ok, so I've got an SQLiteOpenHelper that prepares and returns a SQLiteDatabase object; this is written singleton-pattern, so the database is opened once and only closed when the Activity closes. From there I have three database wrappers encapsulating the queries (some returning cursors to datasets, some inserting data) used by the Activity. I want to insert data from one View, then have that automatically update in another View on the same Dialogue. I'm writing this on a notepad and testing on the phone (since the emulator crashes the notepad...), so I can't pull up stacktraces atm. So questions: 1) are there limitations to writing to a database, when there are cursors open on the database? 2) Does a Cursor.requery()? call update the ListView with the cursor as a data connector?

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  • How to Use Eclipse to Debug JNI code (Java & C/C++)

    - by tkryger
    While I can debug my application with the Eclipse JDT debugger for Java code and GDB for C code, I would prefer to use a single tool for all my debugging. I found several projects that enable "mixed-mode" debugging in Eclipse and include support for single stepping between Java and native code. Intel's Integrated Debugger for Java/JNI Environments Mariot Chauvin's Summer of Code Project: Support Seamless Debugging between JDT & CDT Unfortunately, one claims to be pre-release quality and the other is currently unmaintained. Are there any plug-ins that bring mixed mode debugging functionality to Eclipse in a reliable way or should I continue to use two separate debuggers?

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  • setContentView gives an exception

    - by sukitha
    I have a button and onClick it changes the contentView by setContentView (int layoutResID). It works fine. But if you take the focus to the button by the trackball(making it yellow) and tap on it, it gives the exception. java.lang.IllegalArgumentException: parameter must be a descendant of this view

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  • Parsing XML wont display all items.

    - by Nauman A
    I have this code but the toast wont display any message what is wrong with my code.. I can get the value from link, linknext but title wont bring out any value. ( I am not very bright with writing code so please suggest anything you may feel like. final Button button = (Button) findViewById(R.id.Button01); button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // Perform action on click try { URL url = new URL( "http://somelink.com=" + Link.setFirst_link); DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); Document doc = db.parse(new InputSource(url.openStream())); doc.getDocumentElement().normalize(); NodeList nodeList = doc.getElementsByTagName("item"); /** Assign textview array lenght by arraylist size */ for (int i = 0; i < nodeList.getLength(); i++) { Node node = nodeList.item(i); Element fstElmnt = (Element) node; NodeList nameList = fstElmnt.getElementsByTagName("link"); Element nameElement = (Element) nameList.item(0); nameList = nameElement.getChildNodes(); String img = (((Node) nameList.item(0)).getNodeValue()); NodeList websiteList = fstElmnt.getElementsByTagName("linknext"); Element websiteElement = (Element) websiteList.item(0); websiteList = websiteElement.getChildNodes(); String nextlink = (((Node) websiteList.item(0)).getNodeValue()); Link.setFirst_link = nextlink; Drawable drawable = LoadImageFromWebOperations(img); imgView.setImageDrawable(drawable); NodeList titleList = fstElmnt.getElementsByTagName("title"); Element titleElement = (Element) titleList.item(0); websiteList = titleElement.getChildNodes(); String title = (((Node) titleList.item(0)).getNodeValue()); Context context = getApplicationContext(); CharSequence text = title; int duration = Toast.LENGTH_SHORT; Toast toast = Toast.makeText(context, text, duration); toast.show(); } } catch (Exception e) { System.out.println("XML Pasing Excpetion = " + e); } } }); /** Set the layout view to display */ } Here is the xml file <?xml version="1.0"?> <maintag> <item> <link>http://image.com/357769.jpg?40</link> <linknext>http://www.image.com</linknext> <title>imagename</title> </item> </maintag>

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  • animation on image view on grid view

    - by yahska
    i am having a grid view with 2 coloums and each item in grid view having one image and 2 textview below the image. i have added one button over each image and after clicking on button i want that image should scale and move down to bottom tab. like it should appear image drop down from its position in side one button of tabview. i am able to add animation on image using this code AnimationSet set = new AnimationSet(true); Animation trAnimation = new TranslateAnimation(0, 160,0, 100); trAnimation.setDuration(500); set.addAnimation(trAnimation); Animation scaleAnimation = AnimationUtils.loadAnimation(this, R.anim.anim_scale); set.addAnimation(scaleAnimation); set.setFillEnabled(true) ; set.setFillAfter(true); view.setAlpha(100) ; view.startAnimation(set); but problem is that image is not coming to bottom of screen it is going inside of grid item where it is placed . anybody knows how to move this image to bottom.

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  • Add String to adapter

    - by Waggoner_Keith
    I have an adapter and i want to add a string to it but when i run this code it only add the last string in the songstoadd variable ... That is a custom adapter which adds dividers in where neccessary but in the Array Adapter i want to a all of the strings that have the same first letter in their name .... SeparatedListAdapter adapter = new SeparatedListAdapter(this); ArrayList<String> songstoadd = new ArrayList<String>(); Collections.sort(songtitle); int m = 0; while( m <songtitle.size()-1){ if(songtitle.get(m).substring(0, 1) == songtitle.get(m+1).substring(0, 1)){ m++; }else{ songstoadd.clear(); songstoadd.add(songtitle.get(m)); adapter.addSection(songtitle.get(m).substring(0, 1), new ArrayAdapter<String>(getApplicationContext(),R.layout.song, songstoadd)); m++; } } setListAdapter(adapter); }

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  • How to make condition inside getView of Custom BaseAdapter

    - by user1501150
    I want to make a Custom ListView with Custom BaseAdapter, where the the status=1,I want to show a CheckBox, and else I want to show a textView.. My given condition is: if (NewtheStatus == 1) { alreadyOrderText .setVisibility(TextView.GONE); } else{ checkBox.setVisibility(CheckBox.GONE); } But Some times I obtain some row that has neither checkBox nor TextView. The Code of my Custom BaseAdapter is given below . private class MyCustomAdapter extends BaseAdapter { private static final int TYPE_ITEM = 0; private static final int TYPE_ITEM_WITH_HEADER = 1; // private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1; private ArrayList<WatchListAllEntity> mData = new ArrayList(); private LayoutInflater mInflater; private ArrayList<WatchListAllEntity> items = new ArrayList<WatchListAllEntity>(); public MyCustomAdapter(Context context, ArrayList<WatchListAllEntity> items) { mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public void addItem(WatchListAllEntity watchListAllEntity) { // TODO Auto-generated method stub items.add(watchListAllEntity); } public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; final int position1 = position; if (v == null) { LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.listitempict, null); } watchListAllEntity = new WatchListAllEntity(); watchListAllEntity = items.get(position); Log.i("position: iteamsLength ", position + ", " + items.size()); if (watchListAllEntity != null) { ImageView itemImage = (ImageView) v .findViewById(R.id.imageviewproduct); if (watchListAllEntity.get_thumbnail_image_url1() != null) { Drawable image = ImageOperations(watchListAllEntity .get_thumbnail_image_url1().replace(" ", "%20"), "image.jpg"); // itemImage.setImageResource(R.drawable.icon); if (image != null) { itemImage.setImageDrawable(image); itemImage.setAdjustViewBounds(true); } else { itemImage.setImageResource(R.drawable.iconnamecard); } Log.i("status_ja , status", watchListAllEntity.get_status_ja() + " ," + watchListAllEntity.getStatus()); int NewtheStatus = Integer.parseInt(watchListAllEntity .getStatus()); CheckBox checkBox = (CheckBox) v .findViewById(R.id.checkboxproduct); TextView alreadyOrderText = (TextView) v .findViewById(R.id.alreadyordertext); if (NewtheStatus == 1) { alreadyOrderText .setVisibility(TextView.GONE); } else{ checkBox.setVisibility(CheckBox.GONE); } Log.i("Loading ProccardId: ", watchListAllEntity.get_proc_card_id() + ""); checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { WatchListAllEntity watchListAllEntity2 = items .get(position1); Log.i("Position: ", position1 + ""); // TODO Auto-generated method stub if (isChecked) { Constants.orderList.add(watchListAllEntity2 .get_proc_card_id()); Log.i("Proc Card Id Add: ", watchListAllEntity2 .get_proc_card_id() + ""); } else { Constants.orderList.remove(watchListAllEntity2 .get_proc_card_id()); Log.i("Proc Card Id Remove: ", watchListAllEntity2.get_proc_card_id() + ""); } } }); } } return v; } private Drawable ImageOperations(String url, String saveFilename) { try { InputStream is = (InputStream) this.fetch(url); Drawable d = Drawable.createFromStream(is, "src"); return d; } catch (MalformedURLException e) { return null; } catch (IOException e) { return null; } } public Object fetch(String address) throws MalformedURLException, IOException { URL url = new URL(address); Object content = url.getContent(); return content; } public int getCount() { // TODO Auto-generated method stub int sizef=items.size(); Log.i("Size", sizef+""); return items.size(); } public Object getItem(int position) { // TODO Auto-generated method stub return items.get(position); } public long getItemId(int position) { // TODO Auto-generated method stub return position; } }

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  • Androids ExpandableListView - where to put the button listener for buttons that are children

    - by CommonKnowledge
    I have been playing around a lot with the ExpandableListView and I cannot figure out where to add the button listeners for the button that will be the children in the view. I did manage to get a button listener working that uses getChildView() below, but it seems to be the same listener for all the buttons. The best case scenario is that I would be able to implement the button listeners in the class that instantiates the ExpandableListAdapter class, and not have to put the listeners in the actual ExpandableListAdapter class. At this point I don't even know if that is possible I have been experimenting with this tutorial/code: HERE getChildView() @Override public View getChildView(int set_new, int child_position, boolean view, View view1, ViewGroup view_group1) { ChildHolder childHolder; if (view1 == null) { view1 = LayoutInflater.from(info_context).inflate(R.layout.list_group_item_lv, null); childHolder = new ChildHolder(); childHolder.section_btn = (Button)view1.findViewById(R.id.item_title); view1.setTag(childHolder); childHolder.section_btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Toast.makeText(info_context, "button pushed", Toast.LENGTH_SHORT).show(); } }); }else { childHolder = (ChildHolder) view1.getTag(); } childHolder.section_btn.setText(children_collection.get(set_new).GroupItemCollection.get(child_position).section); Typeface tf = Typeface.createFromAsset(info_context.getAssets(), "fonts/AGENCYR.TTF"); childHolder.section_btn.setTypeface(tf); return view1; } Any help would be much appreciated. Thank you and I will be standing by.

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  • Why is my onSharedPreferenceChangeListener being called multiple times when I change a pref.

    - by brockoli
    I've written an app with 3 tabs. Each tab has the same list view with different data sources. I have setup SharedPreferences in the tabhost activity, but I put my onSharedPreferenceChangeListener method in my listactivity. When I change a preference, my listener gets called and it updates my database. This is all working. However, if I change the data in tab 1, it calls my listener once. If I change the data for tab 2 it calls it twice and if I change the data in tab 3 it calls it three times. Any idea why it works this way? I guess I could setup my shared prefs in my listactivity and that might avoid the issue, but I'm curious why my listener is called multiple times if it's in a different tab. brockoli

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  • PendingIntent sent from a notication.

    - by totem
    Hi, What im trying to accomplish is to send a notification through the notification manager that once clicked will do something in the application only if its currently running. i have tried to use: notification.contentIntent = PendingIntent.getActivity(this, nNotificationCounter, Someintent, PendingIntent.FLAG_NO_CREATE) Which allways caused an exception once trying to use the notify. I switched to: Notification notification = new Notification(icon, tickerText, when); RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.some_notification); contentView.setTextViewText(R.id.title, sTitle); contentView.setTextViewText(R.id.text, sText); notification.contentView = contentView; notification.defaults |= Notification.DEFAULT_SOUND; notification.number = nNotificationCounter; Intent notificationIntent = new Intent(this, MainWindow.class).setAction(ACTION_RESET_MESSGE_COUNTER); notification.contentIntent = PendingIntent.getBroadcast(this, nNotificationCounter, notificationIntent, 0); and although this code doesn't cause an exception. it doesnt call my BroadcastReceiver which is defined as follows: public class IncomingReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(ACTION_RESET_MESSGE_COUNTER)) { System.out.println("GOT THE INTENT"); return; } } } and set in the onCreate: IntentFilter filter = new IntentFilter(ACTION_RESET_MESSGE_COUNTER); IncomingReceiver receiver = new IncomingReceiver(); context.registerReceiver(receiver, filter); Does anyone see something wrong with the code? Or how would i go about to get messages when the notification is clicked, but not create any activity if it isn't already created. edit: added the intent creation and notification creation. Thanks, Tom

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  • When I get the Force Close dialog, I have a Report button. Where did it come from?

    - by BenTobin
    I feel a little bit silly asking this, but I haven't been able to find any answers on my own. My Force Close dialog has a "Report" button. I think it's a great idea, and I wish everyone had it. At first, I thought it must be something I turned on without realizing it, but not only can't I find any setting that I might have touched, I also can't find any reference to this button existing on the Internet. I have a Droid, and I know 4 other people with Droids, and they say they don't have the option to report Force Closes. Am I special? Am I just missing something? The "report" button has been there for at least a few weeks now. When I use the Report button, I get a screen with a "feedback" field and a checkbox for "Include system data". Below that , it says "Information from feedback reports will be shown to the developer of the application." Under that are Preview and Send buttons. As a developer, I've never received one of these reports. I'd try to send a report to myself, but it seemingly only shows the button for apps installed from the market, and I don't know of a way to crash my production app. I suppose I could publish a simple crashing app just to try it out, but I thought I'd ask you folks first. Edit: You can view screenshots here: http://bentobin.com/crashReportImages/

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  • How to show a ProgressDialog while changing from a activity to another activity?

    - by AndroidUser99
    i want to show a PD when my activity A starts another activity B. But in that onclick method, my A activity haves to do some work before start B, and B also haves to do some work because it haves to load a lot of data for the UI. I need a PD that is viewed by the user in all the process of the loading data of changin from activity A to B. ¿how can do it? i tryed storing a static ProgressDialog on MyApplication.java, and with these methods: public static void showProgressDialog(Context c) { pd = ProgressDialog.show(c, c.getResources().getString(R.string.app_name), c.getResources().getString(R.string.loading), true, false); } public static void dismissProgressDialog(){ pd.dismiss(); } but it doesn't works, it doesn't shows nothing, i dont know why how to achieve this by a easy way? i know that i can do it with async task, but that is too hard for me, i can't understand the code examples i am finding on this web and google code examples are welcome thanks

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  • Pointing layout_above to an external ID?

    - by Joren
    When I try to use layout_above to position a view above another view, it can't find the ID if it's not in the same XML file. I'm adding my XML files at run time but I still want to be able to position them relative to eachother. Any suggestions?

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  • Replace a fragment programmatically

    - by Vishal
    I have three fragments as shown in below figure. I have added all these three fragments in LinearLayout using .xml file and when my launcher activity starts I load that .xml layout using setContentView.I have some controls on fragment2. Clicking on any one loads the fragment4 programmatically using FragmentTransaction and commit method. This fragments is added to the screen but the problem is it take the whole screen area. What can be the problem?

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  • c++ i need help with this program. everytime i try to run it, i got a problem

    - by FOXMULDERIZE
    1-the program must read numeric data from a file. 2-only one line per number 3-half way between those numbers is a negative number. 4-the program must sum those who are above the negative number in a acumulator an those below the negative number in another acumulator. 5-the black screen shall print both results and determined who is grater or equal. include include using namespace std; void showvalues(int,int,int[]); void showvalues2(int,int); void sumtotal(int,int); int main() { int total1=0; int total2=0; const int SIZE_A= 9; int arreglo[SIZE_A]; int suma,total,a,b,c,d,e,f; ifstream archivo_de_entrada; archivo_de_entrada.open("numeros.txt"); //lee/// for(int count =0 ;count < SIZE_A;count++) archivo_de_entrada>>arreglo[count] ; archivo_de_entrada.close(); showvalues(0,3,arreglo); showvalues2(5,8); sumtotal(total1,total2); system("pause"); return 0; } void showvalues(int a,int b,int arreglos) { int total1=0; //muestra//////////////////////// cout<< "los num son "; for(int count = a ;count <= b;count++) total1 += arreglos[count]; cout < } void showvalues2(int c,int d) { ////////////////////////////// int total2=0; cout<< "los num 2 son "; for(count =5 ;count <=8;count++) total2 = total2 + arreglo[count]; cout < void sumtotal(int e,int f) { ///////////////////////////////// cout<<"la suma de t1 y t2 es "; total= total1 + total2; cout< }

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  • Dismiss a custom dialog?

    - by YaW
    Hi, I'm trying to make a custom dialog to show a view in this dialog. This is the Builder code: //Getting the layout LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE); View layout = inflater.inflate(R.layout.custom_dialog_simple, (ViewGroup) findViewById(R.id.rlDialogSimple)); //Change Text and on click TextView tvDialogSimple = (TextView) layout.findViewById(R.id.tvDialogSimple); tvDialogSimple.setText(R.string.avisoComprobar); Button btDialogSimple = (Button) layout.findViewById(R.id.btDialogSimple); btDialogSimple.setOnClickListener(new OnClickListener() { public void onClick(View v) { //Do some stuff //Here i want to close the dialog } }); AlertDialog.Builder builder = new AlertDialog.Builder(AcPanelEditor.this); builder.setView(layout); AlertDialog alert = builder.create(); alert.show(); So, i want to dismiss the dialog in the onClick of btDialogSimple. How i can do it? I don't know how to call the dismiss method from inside a onclicklistener. My buttons have a custom layout, so i don't want to make a builder.setPositiveButton. Any ideas?

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  • Exception in DatePickerDialog

    - by Miya
    Hi, i am trying to create a DatePickerDialog in the class 'dateDisplay.class'. I am calling this activity from 'main.class'. If I call the 'dateDisplay.class' using startActivity(), then the DatePickerDialog works fine. But actually I am using an ActivityGroup (for using tab in my application) and I am starting the 'dateDisplay.class' using the following code : Intent dateIntent=new Intent(context,dateDisplay.class); View v=getLocalActivityManager().startActivity("2",dateIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView(); setContentView(v); But an exception is caught, on calling the onCreateDialog() function. And the process is suddently stopped. It shows TargetInvocationException is occured. How can I correct the code? Following is my code: public Dialog onCreateDialog(int id,Bundle b) { Calendar c=Calendar.getInstance(); int day=c.get(Calendar.DAY_OF_MONTH); int month=c.get(Calendar.MONTH); int year=c.get(Calendar.YEAR); Dialog d = null; if(id==DATE_DIALOG_ID) { return new DatePickerDialog(this,dateChangeListener,year,month,day); } else { return null; } } Please help me.. Thank you..

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  • Adding a button bar at the bottom of ListView upon checkbox select (as in gmail app)??

    - by elto
    I have a ListView with custom adapter. In each row there is a checkbox and couple of textviews. I want user to give option to delete the check marked items, so as soon as soon clicks on one of the checkbox, I want a button bar to slide in from the bottom and stay at the bottom regardless of listview scroll. This is something like the email app behavior of Motorola Cliq and to some extent gmail app itself. I have tried adding a relativelayout (containing buttons) below the listview, which has visibility set to gone initially, but as soon as user checks a button, the visibility changes to "visible". I have added a slide-in animation to it too. It is working but problem is that it is overlapping the last element of the listview which user can not checkmark if the button bar has already become visible. So I tried to set the bottom margin of the listview equal to the height of the button bar when I'm changing the button bar visibility, which solves the problem of overlap, but now the checkbox behavior has gone weird. Clicking on one checkmark tries to checkmark another checkmark in the list for some weird reason. I noticed that this happens because as soon as I change the listview margin, list redraws itself, and during this new call to getView() method of adapter, things mess up. I wanted to ask if anyone has done something like this. What is the best method to add such button bar below list while keeping the slide-in animation intact. Also, What is the footer-view of listview and can that solve my problem?

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  • Get the running page in an application

    - by sairam333
    Hi I want to get the running page in application again we start the application after clicking the home button.In my application when i click home and run that application every time it run from starting on wards.But I want a page where we press the home button in an emulator.For that what can i do?Thanka in advance

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