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  • EditText selects by default?

    - by GuyNoir
    Whenever I have an EditText field in my android application, it is highlighted with the blinking cursor for input as soon as the activity is started (though the keyboard doesn't pop up). How can I disable this?

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  • Android quotes within an sql query string

    - by miannelle
    I want to perform a query like the following: uvalue = EditText( some user value ); p_query = "select * from mytable where name_field = '" + uvalue + "'" ; mDb.rawQuery( p_query, null ); if the user enters a single quote in their input it crashes. If you change it to: p_query = "select * from mytable where name_field = \"" + uvalue + "\"" ; it crashes if the user enters a double quote in their input. and of course they could always enter both single and double quotes.

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  • Accessing Google Account Id /username via Android (pre 2.0)

    - by KawBoy
    How do you access the user's Google Account Id / username in code (pre-2.0)? I am building an application that will call a web service to store data and I want to identify the identity of the person sumitting the data. If no user identity information available (pre 2.0) how about the ability to access phone identity (pre 2.0). Thanks in advance.

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  • Storing API keys in Android, is obfustication enough?

    - by fredley
    I'm using the Dropbox API. In the sample app, it includes these lines: // Replace this with your consumer key and secret assigned by Dropbox. // Note that this is a really insecure way to do this, and you shouldn't // ship code which contains your key & secret in such an obvious way. // Obfuscation is good. final static private String CONSUMER_KEY = "PUT_YOUR_CONSUMER_KEY_HERE"; final static private String CONSUMER_SECRET = "PUT_YOUR_CONSUMER_SECRET_HERE"; I'm well aware of the mantra 'Secrecy is not Security', and obfuscation really only slightly increases the amount of effort required to extract the keys. I disagree with their statement 'Obfustication is good'. What should I do to protect the keys then? Is obfustication good enough, or should I consider something more elaborate?

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  • How to display Preferences in a View

    - by Sybiam
    I'm building some sort of wizard to create user accounts in Sync and Manage account. I use a ViewFlipper my activity has to be an AccountAuthenticatorActivity. That said it also means I can't inherit PreferenceActivity. So I looked up in the code of PreferenceActivity and I believe it should be possible to have a PreferenceView that inherit from ListView. The Activity part of PreferenceActivity isn't really needed as far as I know. Though the PreferenceManager is what really blocks me. private PreferenceManager onCreatePreferenceManager() { PreferenceManager preferenceManager = new PreferenceManager(this, FIRST_REQUEST_CODE); preferenceManager.setOnPreferenceTreeClickListener(this); return preferenceManager; } This function imply that we can instatiate PreferenceManager using the operator new. Apparently, the sdk hide the constructor of the PreferenceManager. I'm kind of confused. Is there a way to inflate my preferences and display them without PreferenceActivity?

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  • android widget unresponsive

    - by John
    I have a widget that you press and it then it will update the text on the widget. I have set an on click listener to launch another activity to perform the text update, But for some reason it only works temporarily and then it will become unresponsive and not do anything when pressed. Does anyone know why it might be doing that? i have posted my widget code below in case it is helpful. @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) { thisWidget = new ComponentName(context, MemWidget.class); Intent intent = new Intent(context, updatewidget.class); PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0); // Get the layout for the App Widget and attach an on-click listener to the button RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget); views.setOnClickPendingIntent(R.id.ImageButton01, pendingIntent); // Tell the AppWidgetManager to perform an update on the current App Widget appWidgetManager.updateAppWidget(thisWidget, views); } @Override public void onReceive(Context context, Intent intent) { appWidgetManager = AppWidgetManager.getInstance(context); remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget); thisWidget = new ComponentName(context, MemWidget.class); // v1.5 fix that doesn't call onDelete Action final String action = intent.getAction(); if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) { final int appWidgetId = intent.getExtras().getInt( AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) { this.onDeleted(context, new int[] { appWidgetId }); } } else { super.onReceive(context, intent); } }

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  • Android Samsung S2 spannablestringbuilder error

    - by Bilal Akmal
    I'm working on an app which fetches data from server using JSON. It is working fine in emulator but in my phone, it is giving error and not getting data. The error comes at this point in JSON Parser.... HttpPost httpPost = new HttpPost(url); httpPost.setEntity(new UrlEncodedFormEntity(params)); HttpResponse httpResponse = httpClient.execute(httpPost);//Error Point httpEntity = httpResponse.getEntity(); On the third line logcat shows.... SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length I have searched a lot but it doesn't help me.

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  • How to optimize the login option in android?

    - by Praween k
    HI, I want to create Login option in my application , so that once a person gets login that device creates token which is saved over server. From next time whenever he/she operates the application, directly goes to next label by checking that token keyvalue pair over server.IT requires login page only when that keyvalue pair is deleted from the server. Can anyone help me from this.I will be very grateful to you. Looking for reply. Regards, Praween

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  • Android: Is decreasing size of .png files have some effect to resulted Bitmap in memory

    - by nahab
    I'm writing game with a large amount of .png pictures. All worked fine. Than I added new activity with WebView and got memory shortage. After that I made some experiment - replace game .png images with ones that just fully filled with some color. As result memory shortage had gone. But I suppose that Bitmap internally hold each pixel separately so such changes should have no effect. Maybe this because of initial images have alpha channel and my test images have not it? But actually question is: Will decreasing .png images files sizes make some effect on decreasing usage of VM application heap or not?

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  • android does not display "" inside TextView?

    - by UMMA
    dear friends, i am trying to display STRING my car name is "abc" in textview. it displays &qoute;abc&qoute; after running application. i have tried decoding into " and then assigning it to TextView but it always convert " to &qoute; can any one guide me how to solve this issue? any help would be appriciated.

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  • Prevent application requiring LED or camera flash from Android marketplace

    - by premann
    Is there a particular flag that we can use to prevent apps showing up in marketplace which require the phone to have a camera flash /LED? Typical apps are ones which make the phone act like a torchlight in dark. I have seen a tag which prevents apps requiring autofocus in a camera from appearing in the marketplace. Just looking to find out if there is something similar for camera flash.

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  • developing daily alarm in android

    - by zoza
    I have this piece of code that fire the alarm once by setting a time and date using the TimePicker and the DatePicker in another activity. i want to modify it in a way that whenever i set a time and a date it will fire the alarm everyday at the same time. in other words i want the alarm to be fired dialy public class M_ReminderManager { private Context mContext; private AlarmManager mAlarmManager; public M_ReminderManager(Context context) { mContext = context; mAlarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); } public void setReminder(Long reminderId, Calendar when) { Intent i = new Intent(mContext, Medicines_OnAlarmReceiver.class); i.putExtra(RemindersDbAdapter.KEY_ROWID_MEDS, (long)reminderId); PendingIntent pi = PendingIntent.getBroadcast(mContext, 0, i, PendingIntent.FLAG_ONE_SHOT); mAlarmManager.set(AlarmManager.RTC_WAKEUP, when.getTimeInMillis(), pi); } } i have tried using setRepeating function but i dont know how exactly i should set the attributes i used this line instead of the set fuction on the code but it didn't work: mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, when.getTimeInMillis() ,AlarmManager.INTERVAL_DAY , pi); can someone help me with it? thanks in advance,

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  • Connecting GPS coordinates taken from a database in Android using Overlay

    - by LordSnoutimus
    I am currently building an application that allows users to track where their phone has been on a Google Map. At the moment, when the onLocationChanged() method is called, the application stores the current GPS longitude and latitude in a database and calls the animateTo() method to the current position. Using SDK 1.5, how would I go about connecting these points with a coloured line drawn on the MapView using an Overlay?.

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  • fire an intent from the onCreate method in android

    - by Sephy
    Maybe my question might seem a bit weird, but I have an activity in which, in one case , I have to move to another activity before it finishes loading the screen. My condition is in the onCreate method, which means when I encounter it, i get a "startActivity called from outside an activity context" error and the app just crashes... But then, is there an easy way like a flag for the intent to make it work without having the activity context resolved? thanks for any answer

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  • How is location accuracy measured in Android?

    - by John Palmer
    Does anyone know the proper interpretation of the accuracy measurements returned by getAccuracy()? For instance, are they calculated as: Circular Error Probability (meaning, if i understand correctly, radius of a 50% confidence circle)? Radius of 95% confidence circle? something else? Many thanks for any advice you can give me.

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  • Android Assets No Value Read?

    - by BahaiResearch.com
    AssetManager assets = myContext.getAssets(); String[] files = assets.list("MyFolder"); InputStream myInput = assets.open("MyFolder/" + files[0]); int i = myInput.read(); in this case 'i' is -1 meaning nothing read. Why would nothing be there if the file is there, the variable 'files' has the file as well. Do I need to do anything to the file I put into the Assets folder in get it to be readable?

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  • Android SDK: Create image on touch

    - by dagonal
    Hello, I'm a bit stumped here, I'm trying to make it so an image (already in the drawable folder) gets created everytime you touch the screen and removed when the finger is lifted. I have the touch part coded already, overriding the onTouch method with a couple switch cases that handle each type of action (down, up, move, etc). But I can't for the life of me figure out how to make the image appear and then disappear with the coordinates (matrix?) of where the finger is. Any help would be greatly appreciated!

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  • Scroll view to bottom while keyboard is hiding

    - by Manu
    Hi! I'm using a scroll view to move my view and show certain text fields (that otherwise would be hidden) when the keyboard shows. I basically resize the scroll view to make room for the keyboard, and then scroll up the view smoothly with "scrollRectToVisible", which works perfectly. After that, I can scroll and edit the rest of the text fields without lowering the keyboard, which is what I intend. The problem comes when I want to hide the keyboard again. I have been able to lower the keyboard and scroll down the view to its original position without a problem, but I have been unable to make that transition smooth. At the moment I use the following: - (void)keyboardWillHide: (NSNotification *)notif { CGRect topRect = CGRectMake(0, 0, 1, 1); [scrollview scrollRectToVisible:topRect animated:YES]; scrollview.frame = CGRectMake(0, 0, scrollviewWidth, scrollviewHeight); } I create a CGRect at the top, which I then move into view with "scrollRectToVisible". That works fine and commences the scrolling right when the keyboard is hiding (I use "keyboardWillHide" and not "keyboardDidHide" because the scroll view frame is still missing its lower part). The problem comes when I resize the scroll view frame back to its original dimensions (which I need to do), because then the scrolling is interrupted and the view drops to the bottom suddenly (as there is nothing else to scroll). This causes a glitch, which is why I cannot complete the transition smoothly. Any ideas on how could I lower the keyboard while scrolling the view down smoothly? Should I be scrolling up a bigger view, instead of resizing it? That way I would not have to restore the scroll view frame dimensions when lowering the keyboard, or would I? Thanks very much in advance!

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  • Android pass a 2d int array from one activity to another ERROR

    - by user2189001
    ACTIVITY 1: Bundle bundle = new Bundle(); bundle.putSerializable("CustomLevelData", LevelCreator.LCLevelData); Intent i = new Intent(LevelCreatorPopout.this, GameView.class); i.putExtras(bundle); startActivity(i); ACTIVITY 2: LevelData=(int[][]) extras.getSerializable("CustomLevelData"); ERROR: E/AndroidRuntime(16220): FATAL EXCEPTION: main E/AndroidRuntime(16220): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.powerpoint45.maze/com.powerpoint45.maze.GameView}: java.lang.ClassCastException: java.lang.Object[] cannot be cast to int[][] I have searched but found nothing on 2d INT array passing

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  • Android - BitmapFactory.decodeByteArray - OutOfMemoryError (OOM)

    - by Bob Keathley
    I have read 100s of article about the OOM problem. Most are in regard to large bitmaps. I am doing a mapping application where we download 256x256 weather overlay tiles. Most are totally transparent and very small. I just got a crash on a bitmap stream that was 442 Bytes long while calling BitmapFactory.decodeByteArray(....). The Exception states: java.lang.OutOfMemoryError: bitmap size exceeds VM budget(Heap Size=9415KB, Allocated=5192KB, Bitmap Size=23671KB) The code is: protected Bitmap retrieveImageData() throws IOException { URL url = new URL(imageUrl); InputStream in = null; OutputStream out = null; HttpURLConnection connection = (HttpURLConnection) url.openConnection(); // determine the image size and allocate a buffer int fileSize = connection.getContentLength(); if (fileSize < 0) { return null; } byte[] imageData = new byte[fileSize]; // download the file //Log.d(LOG_TAG, "fetching image " + imageUrl + " (" + fileSize + ")"); BufferedInputStream istream = new BufferedInputStream(connection.getInputStream()); int bytesRead = 0; int offset = 0; while (bytesRead != -1 && offset < fileSize) { bytesRead = istream.read(imageData, offset, fileSize - offset); offset += bytesRead; } // clean up istream.close(); connection.disconnect(); Bitmap bitmap = null; try { bitmap = BitmapFactory.decodeByteArray(imageData, 0, bytesRead); } catch (OutOfMemoryError e) { Log.e("Map", "Tile Loader (241) Out Of Memory Error " + e.getLocalizedMessage()); System.gc(); } return bitmap; } Here is what I see in the debugger: bytesRead = 442 So the Bitmap data is 442 Bytes. Why would it be trying to create a 23671KB Bitmap and running out of memory?

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  • Android game logic problem

    - by semajhan
    I'm currently creating a game and have a problem which I think I know why it is occurring but not entirely sure and even if I knew, don't know how to solve. I have a 2D array 10 x 10 and have a "player" class that takes up a tile. Now, I have created 2 instances of the player and move them around via swiping. Around the edges I have put "walls" that the player cannot walk through and everything works fine, until I remove a wall. Once I remove a wall and move the character/player to the edge of the screen, the player cannot go any further. The problem occurs here, where the second instance of the player is not at the edge of the screen but say 2 tiles from the first instance of "player" who is at the edge. If I try moving them further into the direction of the edge, I understand that the first instance of player wouldn't move or do anything but the second instance of player should still move, but it won't. This is the code that executed when the user swipes: if (player.getArrayX() - 1 != player2.getArrayX()) { player.moveLeft(); } else if (player.getArrayX() - 1 == player2.getArrayX() && player.getArrayY() != player2.getArrayY()) { player.moveLeft(); } if (player2.getArrayX() - 1 != player.getArrayX()) { player2.moveLeft(); } else if (player2.getArrayX() - 1 == player.getArrayX() && player2.getArrayY() != player.getArrayY()) { player2.moveLeft(); } In the player class I have: public void moveLeft() { if (alive) { switch (levelMaster.getLevel1(getArrayX() - 1, getArrayY())) { case 0: break; case 1: subX(); // basically moves player left setArrayX(getArrayX() - 1); // shifts x coord of player 1 within tilemap Log.d("semajhan", "x: " + getArrayX()); break; case 9: subX(); setArrayX(getArrayX() - 1); setAlive(false); break; } } } Any help on the matter or further insight would be greatly appreciated, thanks.

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  • Android: Get the screen resolution / pixels as integer values

    - by poeschlorn
    Hi guys, this is a really simple question on which I've found no answer :/ How can I quickly access the screen resolution (width, height) as integer values? I've tried this one, but it always shows zero on my emulator: DisplayMetrics dm = new DisplayMetrics(); int width = dm.widthPixels / 2; In my case I want to dynamically create a table with tableRows, each containing two cols. This cols all shall fill half of the screen in width. Can someone give me a hint?

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