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• Custom Preference Including EditText

  - by Shardul

  Hello, I am creating an custom preference which contains an EditText. The problem is when user clicks the EdiText for input suggestion box opens up and EditText looses focus. When EditText is clicked again for input, no problem occurs until 'blank space' is entered, which results in suggestion box and hence loss of focus. What I mean by suggestion box is the box which pops up when entering text in EditText

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• referencing ints from other classes

  - by user357032

  if i wanted to reference an int from another class how would i go about doing that??? public class Zoom extends View { private Drawable image; public int zoomControler=20; public Zoom(Context context) { super(context); image=context.getResources().getDrawable(R.drawable.icon); setFocusable(true); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); image.setBounds((getWidth()/2)-zoomControler, (getHeight()/2)-zoomControler, (getWidth()/2)+zoomControler, (getHeight()/2)+zoomControler); image.draw(canvas); } } class HelloOnTouchListener implements OnTouchListener{ @Override public boolean onTouch(View arg0, MotionEvent arg1) { return true; } } in this case i want to reference the zoomControler from the first class in the second helloontouchlistener class

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• Filtering with SimpleCursorTreeAdapter

  - by Aleksander O

  I'm trying to implement filtering using ExpandableListView and SimpleCursorTreeAdapter (its subclass). How can I specify which data (maybe cursor field or TextView text) to use for filtering? Thanks

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• how to move scroll at the bottom of list Programmatically?

  - by UMMA

  dear friends, i after calling notifydatasetchanged(); i want to move scroll of list to the bottom of list so that user could see last record in the listview.actually i am writing Chat module so for that purpose i need latest record at the bottom of list. can any one guide me how to achieve this? any help would be appriciated.

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• JSONArray does not work when I am getting the JSON string from the server

  - by Taehoon A Kim

  I've looked up some answers but am not sure why mine is failing exactly... The code looks something like this HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); String json = EntityUtils.toString(httpEntity); //Convert to JsonArray JSONArray jsonArray = new JSONArray(json); Log.i(DEBUG_TAG, Integer.toString(jsonArray.length())); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); Log.i(DEBUG_TAG, jsonObject.getString(KEY_ID)); // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); // adding each child node to HashMap key => value map.put(KEY_ID, jsonObject.getString(KEY_ID)); map.put(KEY_TITLE, jsonObject.getString(KEY_TITLE)); map.put(KEY_ARTIST, jsonObject.getString(KEY_ARTIST)); map.put(KEY_DURATION, jsonObject.getString(KEY_DURATION)); map.put(KEY_VOTECOUNT, jsonObject.getString(KEY_VOTECOUNT)); map.put(KEY_THUMB_URL, jsonObject.getString(KEY_THUMB_URL)); map.put(KEY_GENRE, jsonObject.getString(KEY_GENRE)); //Adding map to ArrayList if (Integer.parseInt(jsonObject.getString(KEY_VOTECOUNT)) == -1){ //If VoteCount is -1 then add to header headerList.add(map); }else { songsList.add(map); } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } When I run logcat on String json, it seems to show correct info which is kind of like this... { "userdata": [ { "id": "8", "title": "Baby One More Time", "artist": "Britney Spears", "duration": "03:24:00", "votes": "0", "thumb_url": "http://api.androidhive.info/music/images/dido.png", "genre": null }, { "id": "2", "title": "As Long As You Love Me", "artist": "Justin Bieber", "duration": "05:26:00", "votes": "0", "thumb_url": "http://api.androidhive.info/music/images/enrique.png", "genre": "Rock" } ] } and the logcat on JSONArray jsonArray = new JSONArray(json); tells me that jsonArray.length() 10-31 22:57:28.433: W/CustomizedListView(26945): error! Invalid index 0, size is 0 Please let me know Thank you,

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• Gracefully handling screen orientation change during activity start

  - by Steve H

  I'm trying to find a way to properly handle setting up an activity where its orientation is determined from data in the intent that launched it. This is for a game where the user can choose levels, some of which are int portrait orientation and some are landscape orientation. The problem I'm facing is that setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) doesn't take effect until the activity is fully loaded. This is a problem for me because I do some loading and image processing during startup, which I'd like to only have to do once. Currently, if the user chose a landscape level: the activity starts onCreate(), defaulting to portrait discovers from analysing its launching Intent that it should be in landscape orientation continues regardless all the way to onResume(), loading information and performing other setup tasks at this point setRequestedOrientation kicks in so the application runs through onPause() to onDestroy() it then again starts up from onCreate() and runs to onResume() repeating the setup from earlier Is there a way to avoid that and have it not perform the loading twice? For example, ideally, the activity would know before even onCreate was called whether it should be landscape or portrait depending on some property of the launching intent, but unless I've missed something that isn't possible. I've managed to hack together a way to avoid repeating the loading by checking a boolean before the time-consuming loading steps, but that doesn't seem like the right way of doing it. I imagine I could override onSaveInstanceState, but that would require a lot of additional coding. Is there a simple way to do this? Thanks!

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• Make a Gallery Intent of a Specific Folder

  - by Tyler

  Hello - It's me again.. I am not trying to initiate a gallery intent, but I only want it to grab photos in a specific gallery.. From a different post, I received this code: Intent intent = new Intent(); intent.setType("file:///sdcard/Pictures/*"); intent.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(intent,1); But it's not working.. Is this possible?

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• intercept Calendar task,meetings

  - by kamiomar

  Dear, is there any way to intercept calendar task,meetings. Means track task and meeting on insert,edit and update. Thanks.

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• Send Logcat output of an App to an EmailAdress

  - by Sebi

  Hi Were now testing our application with a few friends. Sometimes there are some errors which dont throw an exception. So I don't really know whats the problem was. So i thought it would be a good idea to implement a menu item which allows to send the logcat file to a email adress, so that we can examine the logcat. Unfortunately I didnt found a hint in the Internet how to extract the Logcat from a phone. How to send a email shouldn't be the problem.

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• Multiple Broadcast Messages with Less Data or Less Broadcast Messages with More Data?

  - by niko

  Hi, I am developing an application which is communicating with the server. Tha application can perform log-in and get different parameters from server. The application consists of a RESTful client (custom class for making requests), Communication Service (the service which runs in the background) and the main activity. For now I created multiple broadcast messages and multiple broadcast receivers in the main activity so when the application performs login operation a receiver (loginBroadcastReceiver) in the main activity receives a message and when another parameter is received from the server different message is broadcasted and another receiver handles the message. This way however the application performance is poor but I am not sure whether it is due to multiple broadcast receivers. Does anyone know what is the best way to exchange data between service and main activity - is it better to create a single broadcast receiver and retrieve all parameters from message or is it better to initialize multiple broadcast receivers for multiple parameters? I would appreciate if you could provide any useful resource about the topic because I'm writing the thesis and it would be good if the solution could be explained.

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• How to get a byte array from a drawable ressource ?

  - by Spredzy

  Hi all, I would like to get a byte array from an jpeg image located in my res/drawable file ? Does anyone know how to do that please ?

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• In registration form adding date dialogbox how can apply validation in system date in dialog ends

  - by narasimha

  hi i am implementing registration form adding date field then click icon to display date dialog window then limit date validation in system date below date only how can implement the validation protected Dialog onCreateDialog(int id) { Calendar c = Calendar.getInstance(); int cyear = c.get(Calendar.YEAR); int cmonth = c.get(Calendar.MONTH); int cday = c.get(Calendar.DAY_OF_MONTH); switch (id) { case DATE_DIALOG_ID: return new DatePickerDialog(this, mDateSetListener, cyear, cmonth, cday); } return null; } private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() { public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { String date_selected = String.valueOf(monthOfYear+1)+" /"+String.valueOf(dayOfMonth)+" /"+String.valueOf(year); EditText birthday=(EditText) findViewById(R.id.EditTextBirthday); birthday.setText(date_selected); } }; public void onClick(View v) { if(v == b1) showDialog(DATE_DIALOG_ID); } } ** showing in system date in below dates only how can implemented some solution in running year to below years are display not incrementing above years this condition are appliying validations how can implemented ?

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• Using Website Information Without WebView

  - by Mr. Monkey

  I am very new to this, and I more looking for what information I need to study to be able to accomplish this. What I want to do is use my GUI I have built for my app, but pull the information from a website. If I have a website that looks like this: (Sorry, can't post pics yet) http:// dl.dropbox.com/u/7037695/ErrorCodeApp/FromWebsite.PNG (full website can be seen at http://www.atmequipment.com/Error-Codes) What would I need from the website so that if a user entered an error code here: http:// dl.dropbox.com/u/7037695/ErrorCodeApp/InApp.PNG It would use the search from the website, and populate the error description in my app? I know this is a huge question, I'm just looking for what is actually needed to accomplish this, and then I can start researching from there. -- Or is it even possible?

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• Make part of layout invisible and the other part visible

  - by JonF

  I would like to make a LinearLayout that was created from xml invisible, and another LinearLayout visible to replace it. The replacement layout starts out as invisible. When I make the originally visible layout invisible, it still leaves space for it on the screen. How can I refresh the screen so that space is gone?

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• List like iphone and HTC hero phone app

  - by user286919

  I want to create a list like iphone list and HTC hero phone app. So how can i do that because I tried it with default ListView but I can not make two list in a single layout and ScrollView does not work on it. So can any body help me about this matter?

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• non-static method cannot be referenced from a static context

  - by Mith

  I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/ I get this error: non-static method getContentCharSet(org.apache.http.HttpEntity) cannot be referenced from a static context String charset = getContentCharSet(entity); This error is line 13 on the second box. Any ideas? I have been really struggling with this code :-(

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• PendingIntents in Notifications

  - by Mariano Kamp

  I would like to show a notification that displays the progress of an ongoing operation. That works well for me. But at the same time the remote view should contain cancel button to stop the ongoing operation. The usual content intent should still do something else, i.e. not cancel the ongoing operation. It seems though that I can only have one intent. I have to specify a contentIntent that is launched when clicking on the notification: If I don't specify that I get something along those lines: E/ActivityManager( 62): Activity Manager Crash E/ActivityManager( 62): java.lang.IllegalArgumentException: contentIntent required ... For the "cancel" button I set another intent: Intent cancelSyncIntent = new Intent("com.xyz.CANCEL_SYNC"); contentView.setOnClickPendingIntent(R.id.cancel_sync, PendingIntent.getBroadcast(context, 0, cancelSyncIntent, 0)); But this never works. I always get the content intent when the button is clicked. It looks like I cannot use buttons in remote views of notifications?! I could probably display a text: "<< Press to cancel operation ", but that seems rather heavy handed.

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• How to check the value entered in EditText is aplhanumeric or not?

  - by rob

  My application takes userid from user as input, the userid is alphanumeric i.e just the first character is (a-z), other part is numeric. How can I validate input of this type ( like G34555) ?

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• Dynamic ExpandableListView

  - by JLB

  Can anyone tell me how I can Dynamically add groups & children to an ExpandableListView. The purpose is to create a type of task list that I can add new items/groups to. I can populate the view with pre-filled arrays but of course can't add to them to populate the list further. The other method i tried was using the SimpleExpandableListAdapter. Using this i am able to add groups from a List but when it comes to adding children i can only add 1 item per group. public List<Map<String, String>> groupData = new ArrayList<Map<String, String>>(); public List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); public void addGroup(String group) { Map curGroupMap = new HashMap(); groupData.add(curGroupMap); curGroupMap.put(NAME, group); //Add an empty child or else the app will crash when group is expanded. List<Map<String, String>> children = new ArrayList<Map<String, String>>(); Map<String, String> curChildMap = new HashMap<String, String>(); children.add(curChildMap); curChildMap.put(NAME, "EMPTY"); childData.add(children); updateAdapter(); } public void addChild(String child) { List children = new ArrayList(); Map curChildMap = new HashMap(); children.add(curChildMap); curChildMap.put(NAME, child); curChildMap.put(IS_EVEN, "This child is even"); childData.add(activeGroup, children); updateAdapter(); }

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• How do I write a combined CheckboxPreference / PreferenceScreen?

  - by aioobe

  I would like to have a checkbox preference that takes the user to a new (sub)preference screen if the user presses on the actual text (and not on the checkbox to the right). Just as the control under Settings - Wireless - Mobile Network Settings - Access Point Names.

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• Trying to send a jpg image but getting unsupported format of jpg in my mail box. the code is given b

  - by Shalini Singh

  final Intent emailIntent = new Intent(Intent.ACTION_SEND); emailIntent.setType("image/jpeg"); emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { "[email protected]" }); emailIntent.putExtra(Intent.EXTRA_SUBJECT, "this is the test"); emailIntent.putExtra(Intent.EXTRA_TEXT, "testing time"); emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(url));

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• convert bitmap to byte array

  - by narasimha

  hi 437400a8-1-40-1-32016747073700110010100-1-370670967876987810109111322151312121327202116223229343432293131364052443638493931314561454953555858583543636863566752575855-1-37067110101013121326151526553731375555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555-1-640178010401043134021713171-1-600270103031000000000002461375-1-6004716022133244700000001234517336184919-127203465817505111366829798-111-95-79-1-600241111110000000000001234-1-6003217110222230000000001217318433506581113-95-1-380123102173170630-16-480094-43116-84-8341-30-84-72118-4865250106-2-80-97-121-2-11836-5741-108-362116-43101-966-102974345-787448-12486-1877-87316379-54-71-58112-109-116-94-98279102-97-36-767534-11711311444-57-56-82859384-100399-83-100100-68-90-114-788678118-394344-108-895754-274161-37111-53108-11938-11-2005010612210612546-764577107-107-36-1125-61-7319-78-51-109107-26-287-37-5284119-25126-26-749476-79-116115-19-107-102-7795-33-46-2402764-47-1214100-15-6-10918-105-115-127-1097069-111-123-16-50-9051-8367127-10291-65-53-78-35-18-66-36-103-6499-1099-982327-107979107-473-22-672780-23-5595-4581-4550-18-57-7598-37101-72-79-107-10885-77-39-42-92-72-114-41194622-4108-49200-29-30-8-40-8-8116-58-19114-6907-91073-6210617-101-116-10836-3882-37-122-41-97-6-120-128000-1089941-67-952339-7712337-6511-1064640000000105-11110-85-114-95-46-409042-45-24-86120-8355-10726-32-91110-5-9111-7686-33-63-54123-66-3411951024-29-29-57-11410724-74-2002764-77-127-97-107-899159112-81-9951-78-71854171-21945-92-67-478818-55102-88010000-7386116-85-45111-63-1249-2727-84-115-114-3986-99-111-19-33-120-53-24-98-4-94-9538-2-64080000-73-101-1212890-79108-1149461-18-6-677126-92-37-87-18-41108-72-31-15-65-7145-110-2484020000005949-20-12111-82-5724-53-7873-1956-8739-5-89-28852-29-61771251215652-99109-81105-38-1010261-7086-10594-97858542-278-5911146-33-10645-75-3-11843111-90-49-49-1095499-11344-78-5892-90-81-32-960-40000000090-44-79106-61-55-12-88-52-894629-111-105-8578-3-69-76-10192-8141-15-2077-5-48-86040000114-4594836411202-26-103-90102-22-7149-57-45-15-84-66-42-46645-19-5-3-118-41851012258-18-82117-393149-10090107-39-9771-89117-20-2-100-49121-685-118-68-98-5754145-4679-493031-70107-3398-10611885-103-39-73-27-35-6-105-394337-53124-73-65-43-73-289-119-33-67-33-59125105-48054-1280000011075980-53-446115-116-71-37-16-12-58-102-7373118-62622301982-35-118-962-12800015-1-39 this resultfor bytearray its not true how can implement byte array please some solution

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• What benefits can Java developer have from moving to a *NIX platform?

  - by dave-keiture

  Hi everyone, A friend of mine is a Java developer, who's using *NIX for ages. He claims that *NIX is for real Java geeks, whereas WIN is for dummies (and I'm one of them, according to him) and girls. When I ask him to argue his position, and explain, what's so good for Java developer on *NIX, he starts talking about console, wget, curl and grep. But sorry, wget and curl analogues exist for the WIN platform as well. As for the console - I'm using FAR Commander, and have access to the command line when I need. Moreover, even if I decide moving to *NIX, I will certainly use Netbeans or Eclipse on it, so there will be no big difference. Guys, who use Java on *NIX, could you please give me some real killer examples, when *NIX (any util or technique) dramatically increases Java development productivity (in the way the hints are given in "The Pragmatic Programmer"), or, which is also important, gives more fun from the process. Thanks in advance!

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• Not able to get data from Json completely

  - by Abhinav Raja

  i am getting JSON data from http://abinet.org/?json=1 and displaying the titles in a ListView. the code is working fine but the problem is, it is skipping few titles in my ListView and one title is being repeated. You can see the json data from url given above by copy paste it in JSON editor online http://www.jsoneditoronline.org/ i want titles in the "posts" array to be displayed in ListView, however it is being displayed like this: if you see the JSON data from the link above, its missing like 3 titles (they should come between the first and second title) and 5th title is being repeated. Dont know why this is happening. What minor adjustments i need to do? Please help me. this is my code : public class MainActivity extends Activity { // URL to get contacts JSON private static String url = "http://abinet.org/?json=1"; // JSON Node names private static final String TAG_POSTS = "posts"; static final String TAG_TITLE = "title"; private ProgressDialog pDialog; JSONArray contacts = null; TextView img_url; ArrayList<HashMap<String, Object>> contactList; ListView lv; LazyAdapter adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv = (ListView) findViewById(R.id.newslist); contactList = new ArrayList<HashMap<String, Object>>(); new GetContacts().execute(); } private class GetContacts extends AsyncTask<Void, Void, Void> { protected void onPreExecute() { super.onPreExecute(); // Showing progress dialog pDialog = new ProgressDialog(MainActivity.this); pDialog.setMessage("Please wait..."); pDialog.setCancelable(false); pDialog.show(); } protected Void doInBackground(Void... arg0) { // Making a request to url and getting response JSONParser jParser = new JSONParser(); // Getting JSON from URL JSONObject jsonObj = jParser.getJSONFromUrl(url); // if (jsonStr != null) { try { // Getting JSON Array node contacts = jsonObj.getJSONArray(TAG_POSTS); // looping through All Contacts for (int i = 0; i < contacts.length(); i++) { // JSONObject c = contacts.getJSONObject(i); JSONObject posts = contacts.getJSONObject(i); String title = posts.getString(TAG_TITLE).replace("&#8217;", "'"); JSONArray attachment = posts.getJSONArray("attachments"); for (int j = 0; j< attachment.length(); j++){ JSONObject obj = attachment.getJSONObject(j); JSONObject image = obj.getJSONObject("images"); JSONObject image_small = image.getJSONObject("thumbnail"); String imgurl = image_small.getString("url"); HashMap<String, Object> contact = new HashMap<String, Object>(); contact.put("image_url", imgurl); contact.put(TAG_TITLE, title); contactList.add(contact); } } } catch (JSONException e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(Void result) { super.onPostExecute(result); // Dismiss the progress dialog if (pDialog.isShowing()) pDialog.dismiss(); adapter=new LazyAdapter(MainActivity.this, contactList); lv.setAdapter(adapter); } } } this is my JsonParser class (although its not required): public JSONParser() { } public JSONObject getJSONFromUrl(String url) { // Making HTTP request try { // defaultHttpClient DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(url); HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } try { BufferedReader reader = new BufferedReader(new InputStreamReader( is, "iso-8859-1"), 8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "n"); } is.close(); json = sb.toString(); } catch (Exception e) { Log.e("Buffer Error", "Error converting result " + e.toString()); } // try parse the string to a JSON object try { jObj = new JSONObject(json); } catch (JSONException e) { Log.e("JSON Parser", "Error parsing data " + e.toString()); } // return JSON String return jObj; } } and this is adapter class: public class LazyAdapter extends BaseAdapter { private Activity activity; private ArrayList<HashMap<String, Object>> data; private static LayoutInflater inflater=null; public LazyAdapter(Activity a,ArrayList<HashMap<String, Object>> d) { activity = a; data=d; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public int getCount() { return data.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; if(convertView==null) vi = inflater.inflate(R.layout.third_row, null); TextView title = (TextView)vi.findViewById(R.id.headline3); // title SmartImageView iv = (SmartImageView) vi.findViewById(R.id.imageicon); HashMap<String, Object> song = new HashMap<String, Object>(); song = data.get(position); // Setting all values in listview title.setText((CharSequence) song.get(MainActivity.TAG_TITLE)); iv.setImageUrl((String) song.get("image_url")); thumb_image); return vi; } } Please help me. I am stuck at this for more than a week now. I think there is just something to be changed in my MainActivity class.

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• Setting spinners onResume doesn't work

  - by DixieFlatline

  Hello! I want to save text from 2 edittexts(et1,et2) and selection from 3 spinners(spinnerm,spinner and spinner2) onPause and setting them back onResume. Text from edittexts is saved correctly, only spinner selection don't work as desired. My code: public void onResume(){ super.onResume(); Log.d("REZUM","notr smo"); SharedPreferences seti = getSharedPreferences( "pavzica", MODE_PRIVATE); spinnerm.setSelection(seti.getInt("m", 0)); spinner.setSelection(seti.getInt("k", 0)); spinner2.setSelection(seti.getInt("p", 0)); et1.setText(seti.getString("zade", "")); et2.setText(seti.getString("Vseb", "")); } public void onPause() { shraniPolja(); super.onPause(); } public void shraniPolja() { SharedPreferences seti = getSharedPreferences( "pavzica", MODE_PRIVATE); SharedPreferences.Editor edito = seti.edit(); edito.putString("zade", et1.getText().toString()); edito.putString("Vseb", et2.getText().toString()); edito.putInt("m", spinnerm.getSelectedItemPosition()); edito.putInt("k", spinner.getSelectedItemPosition()); edito.putInt("p", spinner2.getSelectedItemPosition()); edito.putBoolean("b", true); edito.commit(); } What am i doing wrong?

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