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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 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 - Showing Dialog from custom component

    - by Julian Arz
    Hi! I am writing a custom component (derived from a relative layout) which has to show a dialog, Is there a way to do this using callbacks like oncreatedialog or onpreparedialog? if not: if i have to create the dialog outside oncreatedialog, i have to "attach it to an Activity with setOwnerActivity(Activity)". How can the custom component access the activity it is used in, when it is used in the activity's xml-layout and not created from code?

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  • How to update a row in Android database

    - by Sajan
    Hi all I want to update a row on clicking on update button,but its doesn't work. I have used following code. public void btnUpdate(View v) { handeler.updateData(updateName.getText().toString(), updatePhone .getText().toString(), updateEmail.getText().toString(),id); } public void updateData(String name, String phone, String email, String id) { ContentValues values = new ContentValues(); values.put(COLUMN_FIRST, name); values.put(COLUMN_SECOND, phone); values.put(COLUMN_THIRD, email); database.update(TABLE_NAME, values, id, null); } public void search() { Cursor cursor = handeler.getData(); if (cursor.moveToFirst()) { String phoneNo; phoneNo = updateByPhone.getText().toString(); do { String s1 = cursor.getString(2); if (phoneNo.compareTo(s1) == 0) { id = cursor.getString(0); updateName.setText(cursor.getString(1)); updateEmail.setText(cursor.getString(3)); updatePhone.setText(cursor.getString(2)); } } while (cursor.moveToNext()); } } So if any know please suggest me how to solve it. Thanks

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  • How to close reconnect SocketIOClient on android?

    - by erginduran
    My problem is reconnect.I connect SocketIOClient.connect(..) in background service.I close service when internet connection is off.and I re-start service again connection on. How to close this reconnection?I don't want to reconnect SocketIOClient. Its my code: ConnectCallback mConnectCallback = new ConnectCallback() { @Override public void onConnectCompleted(Exception ex, SocketIOClient client) { if (ex != null) { ex.printStackTrace(); return; } client.setReconnectCallback(new ReconnectCallback() { @Override public void onReconnect() { // TODO Auto-generated method stub } }); client.setDisconnectCallback(new DisconnectCallback() { @Override public void onDisconnect(Exception arg0) { // TODO Auto-generated method stub } }); client.setErrorCallback(new ErrorCallback() { @Override public void onError(String arg0) { // TODO Auto-generated method stub } }); client.on("event", new EventCallback() { @Override public void onEvent(JSONArray jsonArray, Acknowledge acknowledge) { ///bla bla } }); ScreenChat.mClient = client; } };

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  • Custom Attributes in Android

    - by Arun
    I'm trying to create a custom attribute called Tag for all editable elements. I added the following to attrs.xml <declare-styleable name="Spinner"> <attr name="tag" format="string" /> </declare-styleable> <declare-styleable name="EditText"> <attr name="tag" format="string" /> </declare-styleable> I get an error saying "Attribute tag has already been defined" for the EditText. Is it not possible to create a custom attribute of the same name on different elements?

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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 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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  • Keep the images downloaded in the listview during scrolling

    - by Paveliko
    I'm developing my first app and have been reading a LOT here. I've been trying to find a solution for the following issue for over a week with no luck. I have an Adapter that extends ArrayAdapter to show image and 3 lines of text in each row. Inside the getView I assign relevant information for the TextViews and use ImageLoader class to download image and assign it to the ImageView. Everything works great! I have 4.5 rows visible on my screen (out of total of 20). When I scroll down for the first time the images continue to download and be assigned in right order to the list. BUT when I scroll back the list looses all the images and start redrawing them again (0.5-1 sec per image) in correct order. From what I've been reading it's the standard list performance but I want to change it. I want that, once the image was downloaded, it will be "sticked" to the list for the whole session of the current window. Just like in Contacts list or in the Market. It is only 20 images (6-9kb each). Hope I managed to explain myself.

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  • Android string formatiing from xml

    - by mann
    I am parsing xml from server. One of its node contains data like <distance>16.3432434324354324km</distance> I am putting it into hashmap like for (int i = 0; i < nl.getLength(); i++) { map.put(KEY_DISTANCE, parser.getValue(e, KEY_DISTANCE)); // adding HashList to ArrayList menuItems.add(map); } Everything is nice. But i want it two decimal places for example i want its value should be 16.34km rather then 16.343234324342342km I tried with DecimalFormat twoDForm=new DecimalFormat("##.00"); try{ Double StartVTwo=Double.valueOf(KEY_DISTANCE); Double resultDouble1 = Double.valueOf(twoDForm.format(StartVTwo)); Log.e("check", String.valueOf(resultDouble1)); }catch (NumberFormatException e){ Log.e("error"," This is error "); } But it shows exception and prints this message. Any help would be appreciated!!

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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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  • Date and time picker in one view...

    - by Rahul Varma
    Hi guys, I wanted to know whether we can implement both date and time picker in one view... In iphone app you can pick both date and time through one view. But in android we have date picker and time picker seperately. So, is there any method by which i can get values of both date and time from one view???

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  • Android use of an string array on another method

    - by spagi
    Hi all. Im trying to make an activity that has a multiple choice dialog after you push a button. In there you select from a list of things. But these things are received from a web method before the dialog appears. So I create a string array after I receive them inside the onCreate to initialise it there with the correct size. But my dialog method then cant get the array because propably its out of its scope. My code looks like this @Override protected Dialog onCreateDialog(int id) //Here is where the array is loaded to the multiple select dialog etc @Override public void onCreate(Bundle savedInstanceState) //Here is where i initialise the array and get its contents etc I cant initialise my array when the class starts because I dont know its size yet. This has to do something with the scopes of my variables and I am pretty confused

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  • how to build and run core apps of ics like settings, camera etc on windows

    - by user1495186
    I have downloaded ics 4.0.3 source code, want to modify native settings, what i have to do is 1) add custom modifications to the settings 2) recompile native settings with added modifications 3) build the source code 4) generate a customized build to work on all android devices. How can I achieve the above thing? Every suggestion is appreciated. Thanks in advance. FYI: Using win7,4gb ram, intel i5 processor. Installed cygwin,git.

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  • not able to draw image on canvas of surface view in Android

    - by Fayaz Ali
    I am drawing an image using drawbitmap method on a canvas of surface view which is an overlay surface on my camera preview.The image drawn is a portion of captured image to guide the user to capture next image with a proper overlap.Now when I am launching the activity as the application start activity i.e it is my first activity,it works fine and draws the image.But when I launch the same activity from some other activity,the surface view is not show anything. Is there any difference between launching an activity from another activity and from the application launch. Anyone help here please!

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  • Embed a database in the .apk of a distributed application [Android]

    - by Sephy
    Hi everybody, My question is I think quite simple but I don't think the answer will be... I have quite a lot of content to have in my application to make it run properly, and I'm thinking of putting all of it in a database, and distribute it in an embeded database with the application in the market. The only trouble is that I have no idea of how to do that. I know that I can extract a file .db from Eclipse DDMS with the content of my database, and I suppose I need to put it in the asset folder of my application, but then how to make the application use it to regenerate the application database? If you have any link to some code or help, that would be great. Thanks

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  • Can I take the voice data (f.e. in mp3 format) from speech recognition? [closed]

    - by Ersin Gulbahar
    Possible Duplicate: Android: Voice Recording and saving audio I mean ; I use voice recognition classes on android and I succeed voice recognition. But I want to real voice data not words instead of it. For example I said 'teacher' and android get you said teacher.Oh ok its good but I want to my voice which include 'teacher'.Where is it ? Can I take it and save another location? I use this class to speech to text : package net.viralpatel.android.speechtotextdemo; import java.util.ArrayList; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.Intent; import android.os.Bundle; import android.speech.RecognizerIntent; import android.view.Menu; import android.view.View; import android.widget.ImageButton; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity { protected static final int RESULT_SPEECH = 1; private ImageButton btnSpeak; private TextView txtText; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); txtText = (TextView) findViewById(R.id.txtText); btnSpeak = (ImageButton) findViewById(R.id.btnSpeak); btnSpeak.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent( RecognizerIntent.ACTION_RECOGNIZE_SPEECH); intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US"); try { startActivityForResult(intent, RESULT_SPEECH); txtText.setText(""); } catch (ActivityNotFoundException a) { Toast t = Toast.makeText(getApplicationContext(), "Ops! Your device doesn't support Speech to Text", Toast.LENGTH_SHORT); t.show(); } } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case RESULT_SPEECH: { if (resultCode == RESULT_OK && null != data) { ArrayList<String> text = data .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); txtText.setText(text.get(0)); } break; } } } } Thanks.

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  • highlight listview items android

    - by user1752939
    I have listview with custom base adapter. When I populate the list I have to check a boolean in the object I'm populating the listview and if it is true to change the background color of that row. public View getView(int position, View convertView, ViewGroup parent) { LoginsList entry = listOfLoginsLists.get(position); if (convertView == null) { LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView = inflater.inflate(R.layout.lists_row, null); } TextView ListName = (TextView) convertView.findViewById(R.id.tvListName); ListName.setText(entry.getListName()); TextView ListDescription = (TextView) convertView.findViewById(R.id.tvListDescription); ListDescription.setText(entry.getListDescription()); Button Send = (Button) convertView.findViewById(R.id.bSend); Send.setOnClickListener(this); Send.setTag(entry); RelativeLayout RelLayout = (RelativeLayout) convertView.findViewById(R.id.layoutListsRow); RelLayout.setFocusableInTouchMode(false); RelLayout.setFocusable(false); RelLayout.setOnClickListener(this); RelLayout.setTag(entry); if (entry.isSent()) { RelLayout.setBackgroundColor(Color.parseColor("#4400FF00")); } return convertView; } But this code doesn't work right. When I scroll the list view the rows colors get messed up.

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  • Rich image scroll and zooming on android

    - by F0RR
    I'm looking for a way to implement image zoom and scrolling the way it is implemented in Droid Comic Viewer. Is there any quick way to do that? If not, then could you please give some advices at least on implementing kinetic scrolling.

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  • Android Assets - Unable to access

    - by BahaiResearch.com
    Using this code it should return a list of the assets. But it crashes, with a "Source not found, Edit Source Lookup Path..." message in the debugger when I call the list method: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); AssetManager assets = this.getAssets(); try { //error happens on this next line String[] l = assets.list(null); } catch (IOException e) { } }

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  • Taking screen shot of a SurfaceView in android

    - by Mostafa Imran
    I am using following method to taking screen shot of a particular view which is a SurfaceView. public void takeScreenShot(View surface_view){ // create bitmap screen capture Bitmap bitmap; View v1 = surface_view; v1.setDrawingCacheEnabled(true); bitmap = Bitmap.createBitmap(v1.getDrawingCache()); v1.setDrawingCacheEnabled(false); ByteArrayOutputStream bos = new ByteArrayOutputStream(); bitmap.compress(CompressFormat.PNG, 0, bos); byte[] imageData = bos.toByteArray(); } the problem is its giving me the whole activity screen image. But I need to take screen shot of the particular view. I tried other ways but those give me a black screen as screen shot, some posts says that it requires rooted device. Can any one help me please. I'm in need of this solution. Help me....

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