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  • How do I overwrite the functionality of the home button?

    - by Alex
    Essentially, I just want to change the home button from just hiding my app to killing the activity that is on the screen. I thought about writing a broadcast receiver that kills the activity, but I'm not sure how to kill the activity from the receiver. How do I change the functionality of the home button to "finish" the specific activity? Thanks

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  • Retriving requried data form Content Providers using single cursor.

    - by HellBoy
    I want to retrieve Name,Number,Company,and Designation so I am retrieving it using 2 cursor as follow Cursor cursor1 = getContentResolver().query(Data.CONTENT_URI, new String[]{Organization.COMPANY, Organization.TITLE}, Data.MIMETYPE + "='" + Organization.CONTENT_ITEM_TYPE + "'", null, null); Cursor cursor2 = getContentResolver().query(Phone.CONTENT_URI, new String[]{Phone.NUMBER, Phone.DISPLAY_NAME}, null, null, null); but How retrieve using one cursor or passing query one time only.

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  • Contact picker with search function

    - by tiex
    This question1 describes a way how to show list of phone numbers and select one of them if my app needs a phone number. But image if I have a huge contact list, it is not enough to just show list but possibility for filtering (by contact's name) is also needed. Is there a standard way to show phones list with picking possibility and with filtering possibility? (I wouldn't like to invent my own) Is there a solution for the problem for sdk 2.0 and lower?

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  • Problem with setProgressDrawable

    - by Martin
    I am having problem with setting a new Drawable to my ProgressBar. If I use the setProgressDrawable() inside onCreate() method it works great. But when I try to call the same method inside a Handler post callback it doesn't work and the progressbar disapears. Can someone explain this behaviour? How can I solve this problem?

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  • How to store double using SharedPrefrences?

    - by user3924167
    I am having trouble storing a double in the phone's memory. What are my other options if this isnt possible. Basically what the code is aiming to do using sharedprefrences is take the stored value of "Alcohol" spending and then add whatever the input is in the editText to it and then store that new value for the next time. Running total of spending on alcohol **Can someone please help with this issue and be detailed where x y & z should go in the project. The user selects from a spinner, which works. public void addInput(){ double dblCostInput = Double.valueOf(inputBox.getText().toString()); String strCategories= spinnerCategories.getSelectedItem().toString(); if(strCategories.equals("Alcohol")) { alcoholSpend = alcoholSpend + dblCostInput; inputBox.setText(""); nextInput(); inputBox.setText("Your Spending on"+strCategories+" is: " +d.format(alcoholSpend)); }

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  • Cancel onKey Event from onKey method

    - by user244190
    Is it possible to cancel an event from within the onKey method. I only want to allow numbers 0 through 9. If another key was pressed then I want to cancel the key press public boolean onKey(View v, int keyCode, KeyEvent ev) { // TODO Auto-generated method stub if(keyCode <30 || keyCode > 39){ //Cancel Event } return false; }

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  • how can I enter character "<" in strings.xml?

    - by yrajabi
    I want to enter string " -< " in strings.xml file, the string has character < and I couldn't add it to xml file without error! I even tried to escaping by \ character: <string name="search_target_arrow"> -\< </string> or enclosing it between "" as below: <string name="search_target_arrow">" -< "</string> but none worked. Maybe I'm very amateur at this and the answer is not hard for you. so please tell me how you add such special chars in strings.xml?

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  • using IntentExatras with Alarm Manager

    - by Ashwin
    I want to know if this code will work(I cannot try it out right now. Moreover, I have a few doubts that have to be cleared). Intent intent = new Intent(context, AlarmReceiver.class); intent.putExtra("user",global.getUsername()); intent.puExtra("password",global.getPassword); PendingIntent sender = PendingIntent.getBroadcast(context, 192837, intent, PendingIntent.FLAG_UPDATE_CURRENT); // Get the AlarmManager service Log.v("inside log_run", "new service started"); AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); am.setRepeating(AlarmManager.RTC_WAKEUP, IMMEDIATELY,60000,sender); finish(); As you can see, this code starts an AlarmManager with setRepeating(). If you see the intent(actually the pending intent) passed on to the BroadcastReceiver, there are two extras that are passed on. These are global variables that live as long as the Application is running. But this AlarmManager is meant to be run in the background (that is application will be alive only for the first few calls of the o fthe alrmamanager to the broadcast recevier) My Question Will AlarmManager make a copy of the global variables(the username and password) and maintain this copy to be passed along with the intent? Because, these values will be used in the broadcast receiver.

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  • Nullpointerexception getSystemService

    - by moppel
    Following line will only not result in a nullpointer exception if I'm connected to a WLAN: ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); Otherwise I get a nullpointer-exception straight ahead? How can I fix this? I want my background service to only work, when it is connected to wlan. But that Nullpointerexception just kills the whole app...

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  • Constantly getting ...DeviceMonitor] Failed to start monitoring

    - by makar
    I find that after running or debugging my application a few times using eclipse, that I get the above output in my console (in red) and I get no feedback from Dalvik as to the connection status to my phone is going. My application will still debug etc. I just get nothing useful in my Console. Any ideas how to fix this? It appears intermittent. It starts doing it after a few minutes, continues to do it for quite a while and occasionally goes away again. This has happened on my last laptop and now on my new laptop with a completely fresh install etc.

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  • When i add a bitmap to an array list the last element is duplicated in previous indexes

    - by saxofone2
    I'm trying to implement a personal way of undo/redo in a finger paint-like app. I have in synthesis three objects: the Main class (named ScorePadActivity), the relative Main Layout (with buttons, menus, etc, as well as a View object where I create my drawings), and a third object named ArrayList where i'm writing the undo/redo code. The problem is, when I press the undo button nothing happens, but if I draw anything again "one-time" and press undo, the screen is updated. If I draw many times, to see any changes happen on screen I have to press the undo button the same number of times I have drawn. Seems like (as in title) when I add a bitmap to the array list the last element is duplicated in previous indexes, and for some strange reason, everytime I press the Undo Button, the system is ok for one time, but starts to duplicate until the next undo. The index increase is verified with a series of System.out.println inserted in code. Now when I draw something on screen, the array list is updated with the code inserted after the invocation of touchup(); method in motionEvent touch_up(); } this.arrayClass.incrementArray(mBitmap); mPath.rewind(); invalidate(); and in ArrayList activity; public void incrementArray(Bitmap mBitmap) { this._mBitmap=mBitmap; _size=undoArray.size(); undoArray.add(_size, _mBitmap); } (All Logs removed for clear reading) The undo button in ScorePadActivity calls the undo method in View activity: Button undobtn= (Button)findViewById(R.id.undo); undobtn.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { mView.undo(); } }); in View activity: public void undo() { this.mBitmap= arrayClass.undo(); mCanvas = new Canvas(mBitmap); mPath.rewind(); invalidate(); } that calls the relative undo method in ArrayList activity: public Bitmap undo() { // TODO Auto-generated method stub _size=undoArray.size(); if (_size>1) { undoArray.remove(_size-1); _size=undoArray.size(); _mBitmap = ((Bitmap) undoArray.get(_size-1)).copy(Bitmap.Config.ARGB_8888,true); } return _mBitmap; } return mBitmap and invalidate: Due to my bad English I have made a scheme to make the problem more clear: I have tried with HashMap, with a simple array, I have tried to change mPath.rewind(); with reset();, new Path(); etc but nothing. Why? Sorry for the complex answer, i want give you a great thanks in advance. Best regards

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  • How to have a run in an Service?

    - by user1497664
    I have implemented an service that runs in a seperate process. This service contains a separate thread where i have a socket connection. This thread has a run() where it is continuously sending data to the port. My problem is after triggering the run() in the thread i don't get any contact with it anymore, i can see in the program that have open the socket that it consciously sends the data but the idea was that i while it is running i could change data that it sends for an example time. here is my run in the external thread: public void run() { if(run) { // Team and player names message is sent when entering in a game setBaseMessage(); SendMessageToCOMPort(base_message + CalculateCRC(base_message)); sleep(); // waits for 100 ms } } Anyone have any idea what might be wrong ?

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  • AdMob won't load programmatically

    - by scottbot95
    I'm need to include ads into my app and I have a settings option to disable ads. so I need to load the ad in code. I copied the code from google to handle that and when I set ads:loadAdOnCreate to true, it works just fine. But if I set it to false and add the two lines AdView adView = (AdView)this.findViewById(R.id.ad); adView.loadAd(new AdRequest()); The ads stop displaying. If I look at log cat, it shows that it is receiving an ad and trying to display it. However it won't actually display on screen. Help?

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  • image steganography in mobile

    - by user309860
    i am a fresher to steganographic concepts and would like to develop a mobile application for implementing image steganography with encryption.i would like to guidance about the suitable ALGORITHMS that can b used and various steps to follow..pls do help..

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  • How can I put a string and an integer into the same array?

    - by Stelios M
    I have to following code. I want this to return an array e.g. arg[] that contains at arg[0] the number of the rows of my cursor and at arg[1] String(0) of my cursor. Since one is integer and the other is string I have a problem. Any ideas how to fix this? public String[] getSubcategoriesRow(String id){ this.openDataBase(); String[] asColumnsToReturn = new String[] {SECOND_COLUMN_ID,SECOND_COLUMN_SUBCATEGORIES,}; Cursor cursor = this.dbSqlite.query(SECOND_TABLE_NAME, asColumnsToReturn, SECOND_COLUMN_SUBCATEGORIES + "= \"" + id + "\"", null, null, null, null); String string = cursor.getString(0); int count = cursor.getCount(); String arg[] = new String[]{count, string}; cursor.close(); return arg; } The cursor and the results and correct i just need to compine them to an array in order to return that.

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  • How can I estimate server costs for creating an app?

    - by G Dottin
    Im writing up a business plan and im having some trouble with the finance part. I put an estimate on the cost of developers, web designers and everything but server costs. Im not a programmer so I dont know all the details. But how much would you think servers are going to cost for a complex app. I cant get into too many details but it keeps track of user preferences, stores data about the user and there is quite alot of back-end to it.

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  • Proper way to 100% wakes my device?

    - by quiel
    Do you have better way to make the device awakes by 100%? I repeatedly call the acquire() but I'm not sure if that is correct. Or should I just call the acquire() once? Or should I make use of Intent.ACTION_SCREEN_OFF? public class MyServiceThatKeepsTheDeviceAwake extends IntentService { ... @Override public void onCreate() { super.onCreate(); mPowerManager = (PowerManager) getSystemService(Context.POWER_SERVICE); mWakeLock = mPowerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK |PowerManager.ACQUIRE_CAUSES_WAKEUP |PowerManager.ON_AFTER_RELEASE, TAG); } @Override public void onStart(Intent intent, int startId) { super.onStart(intent, startId); mWakeLock.acquire(); } // No release

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  • disable the Home Button and Back Button"

    - by michael
    i want way to disable the Home Button & Back Button when click on checkbox in application , my application on version 4.2.2 i have code but not work when click on checkbox work stop to application public void HardButtonOnClick(View v) { boolean checked1 = ((CheckBox) v).isChecked(); if(checked1) { SQLiteDatabase db; db = openOrCreateDatabase("Saftey.db", SQLiteDatabase.CREATE_IF_NECESSARY, null); db.setVersion(1); db.setLocale(Locale.getDefault()); db.setLockingEnabled(true); ContentValues values = new ContentValues(); values.put("hardBtn", "YES"); db.update("Setting", values, "id = ?", new String[] { "1" }); Toast.makeText(this, "Hard Button Locked", Toast.LENGTH_LONG).show(); //SharedPreferences pref = getSharedPreferences("pref",0); //SharedPreferences.Editor edit = pref.edit(); //edit.putString("hard","yes"); //edit.commit(); /* String Lock="yes" ; Bundle bundle = new Bundle(); bundle.putString("key", Lock); Intent a = new Intent(Change_setting.this, ChildMode.class); a.putExtras(bundle); startActivity(a);*/ super.onAttachedToWindow(); this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); isLock = true; } else { SQLiteDatabase db; db = openOrCreateDatabase("Saftey.db", SQLiteDatabase.CREATE_IF_NECESSARY, null); db.setVersion(1); db.setLocale(Locale.getDefault()); db.setLockingEnabled(true); ContentValues values = new ContentValues(); values.put("hardBtn", "NO"); db.update("Setting", values, "id = ?", new String[] { "1" }); //SharedPreferences pref = getSharedPreferences("pref",0); //SharedPreferences.Editor edit = pref.edit(); //edit.putString("hard","no"); //edit.commit(); Toast.makeText(this, "Hard Button Un-Locked", Toast.LENGTH_LONG).show(); isLock = false; } } how can work it??

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  • Singleton wrapper for Context

    - by kpdvx
    I'm considering creating a singleton wrapper for a Context so my model objects, if necessary, can open and read from a database connection. My model objects do not have access to a Context, and I'd like to avoid needing to pass a reference to a Context from object to object. I was planning to place into this singleton a reference to the Context returned by Application.getApplicationContext(). This singleton object would be initialized in my custom Application instance before anything else would need to or have a chance to use it. Can anyone think of a reason to not do this?

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  • Issues with start activity for result

    - by rodkarom
    I have written an Activity using Theme.Holo.Dialog so that it works as an AlertDialog as a login/password notice. I've started this activity with startActivityForResult(...) using a request code I defined. The thing is, whenever I start the activity ´onActivityResult(...)´ is triggered immediately, the buttons get loaded and everything, but once I press them, even though I know the Activity is working because login does happen, there is no result sent back to the first Activity and I am calling setResult(...) and finish() after the buttons are pressed. Thanks in advance, first time using startActivityForResult so I'm sure I must be missing something.

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