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  • Custom changeable handler when a Service finishes downloading a file

    - by jax
    I have a Service that downloads a file from the internet. What I want is for the response (an InputStream in this case) to be handled by a custom handler that can be switched (like a strategy pattern) but I can't figure out how to do this. So basically the User of the API would be able to plug in different handlers for the response, some would parse XML, others might save files etc. I realise I could pass through the activity context and execute the method from this (given some interface) but I don't want to do this obviously, in case the Activity is closed in the meantime while the file is still downloaded. How might I do this?

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  • When marking an item (changing background color) in ListView it's repeating for other items.

    - by Adi
    If I want to mark the second item I'm doing the following code: This code is from my Adapter that extends ArrayAdapter : if (convertView == null) { LayoutInflater mInflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView = mInflater.inflate(R.layout.channel_list, null); } MyContent o = items.get(position); if (o != null) { TextView tt = (TextView) convertView.findViewById(R.id.toptext); TextView bt = (TextView) convertView.findViewById(R.id.bottomtext); if (tt != null) { tt.setText(o.Top()); } if(bt != null){ bt.setText(o.Bottom()); } if(position == 2) { convertView.setBackgroundColor(R.color.selectem_color); } } return convertView; It will show the list view but mark every 9'th item after this item (the 11'th item 13'th and so on). Does anyone know what's the reason?

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  • How to add user customized data to database?

    - by CSharperWithJava
    I am trying to design a sqlite database that will store notes. Each of these notes will have common fields like title, due date, details, priority, and completed. In addition though, I would like to add data for more specialized notes like price for shopping list items and author/publisher data for books. I also want to have a few general purpose fields that users can fill with whatever text data they want. How can I design my database table in this case? I could just have a field for each piece of data for every note, but that would waste a lot of fields and I'd like to have other options and suggestions.

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  • How to force Share Intent to open a specific app?

    - by AndroidUser99
    I like share intent, it is perfect to open sharing apps with image and text parameters. But now i'm researching the way to force share intent to open a specific app from the list, with the paramters given to the share intent. This is my actual code, it shows the list of sharing apps installed on the phone. Please, can somedone tell me what i should add to the code to force for example official twitter app? and official faccebok app? Intent sharingIntent = new Intent(Intent.ACTION_SEND); Uri screenshotUri = Uri.parse("file:///sdcard/test.jpg"); sharingIntent.setType("image/*"); sharingIntent.putExtra(Intent.EXTRA_TEXT, "body text"); sharingIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri); startActivity(Intent.createChooser(sharingIntent, "Share image using")); Thanks

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  • Persisting a context menu after screen rotation

    - by Macarse
    Hi. I have an activity that on it's onCreate method it does: registerForContextMenu(theView); and in onCreateContextMenu: super.onCreateContextMenu(menu, v, menuInfo); menu.add(blablabla); This works great, but the problem is that the context menu disappears when the screen rotates. How to fix this? Thanks for reading!

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  • Efficiently using position to control actions

    - by John Ashmore
    I want to use position (returned from a gridview for e.g.) or a similar numeric integer to do various things, e.g. create a sprite, or in any command that wants something other than a number, e.g. I want to use something like: sprites.add(createSprite(R.drawable.image(position)); , where createSprite creates a sprite using the image supplied, instead of: if (position == 1) {sprites.add(createSprite(R.drawable.image1);} if (position == 2) {sprites.add(createSprite(R.drawable.image2);} ...etc There is an easy solution for strings: Most efficient method to use position to open a .java but what about for situations like this one?

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  • Problem with ArrayList

    - by Houssem
    Hello, I'm reading an xml file from resources, that file contains a list of travel agencies location and adresses and i'm trying to put this list after parsing in an arraylist to use it with maps. So each time I use agencies.add(agency) it adds it to the array but also changes all previous items with the new value. Here's my code if someone can help or explain : public class Main extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView myXmlContent = (TextView)findViewById(R.id.my_xml); String stringXmlContent; try { stringXmlContent = getEventsFromAnXML(this); myXmlContent.setText(stringXmlContent); } catch (XmlPullParserException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } boolean na=false; List<Agency> agencies = new ArrayList(); Agency agency=new Agency(); int i=0; private String getEventsFromAnXML(Activity activity) throws XmlPullParserException, IOException { StringBuffer stringBuffer = new StringBuffer(); Resources res = activity.getResources(); XmlResourceParser xpp = res.getXml(R.xml.hotels); xpp.next(); int eventType = xpp.getEventType(); while (eventType != XmlPullParser.END_DOCUMENT) { if(eventType == XmlPullParser.START_DOCUMENT) { stringBuffer.append("--- Start XML ---"); } else if(eventType == XmlPullParser.START_TAG) { if (xpp.getName().equals("DataBase")){ agency.ResetTsp(); String name=xpp.getAttributeValue(null, "name"); agency.setTspTitle(name); na=true; stringBuffer.append("\nAgence : "+ name); } if (xpp.getName().equals("Title")){ xpp.next(); agency.setTitle(xpp.getText()); stringBuffer.append("\nFiliale: "+xpp.getText()); xpp.nextTag(); } if (xpp.getName().equals("Address")){ xpp.next(); agency.setAddress(xpp.getText()); stringBuffer.append("\nAdresse: "+xpp.getText()); xpp.nextTag(); } if (xpp.getName().equals("Phone") && na==true){ xpp.next(); agency.setTspPhone(xpp.getText()); stringBuffer.append("\nPhone: "+xpp.getText()); xpp.nextTag(); }else{ if (xpp.getName().equals("Phone") && na==false){ xpp.next(); agency.setPhone(xpp.getText()); stringBuffer.append("\nPhone: "+xpp.getText()); xpp.nextTag(); } } if (xpp.getName().equals("Fax")){ xpp.next(); agency.setFax(xpp.getText()); stringBuffer.append("\nFax: "+xpp.getText()); xpp.nextTag(); } if (xpp.getName().equals("e-Mail")){ xpp.next(); agency.setMail(xpp.getText()); stringBuffer.append("\ne-Mail: "+xpp.getText()); xpp.nextTag(); } if (xpp.getName().equals("Latitude")){ xpp.next(); agency.setLatitude(Double.parseDouble(xpp.getText())); stringBuffer.append("\nLatitude: "+xpp.getText()); xpp.nextTag(); } if (xpp.getName().equals("Longitude")){ xpp.next(); agency.setLongitude(Double.parseDouble(xpp.getText())); stringBuffer.append("\nLongitude: "+xpp.getText()); } } else if(eventType == XmlPullParser.END_TAG) { if (xpp.getName().equals("DataBase") || xpp.getName().equals("Agency")){ agencies.add(i,agency); i=i+1; Agency agency = new Agency(); } } eventType = xpp.next(); } stringBuffer.append("\n--- End XML ---"); return stringBuffer.toString(); } } thank you

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  • OnClickListener on Tabs not working

    - by Aracos
    Greetings, I am trying to get the Click - event when clicking on the currently selected tab of my TabActivity. The onTabChangedHandler is only called whenever the tab is changed, not if the currently active Tab is clicked. The debugger tells me i have the onClickListener Registered for the TabWidget within my TabHost. Am i registering for the wrong View? Also, I am unable to create a Context Menu for the Tabs, only for its content, is this problem related? public class TestDroidViewTab extends TabActivity implements TabContentFactory , OnTabChangeListener, OnClickListener { private static final String LOG_KEY = "TEST"; ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final TabHost tabHost = getTabHost(); TabHost.TabSpec ts = tabHost.newTabSpec("ID_1"); ts.setIndicator("1"); ts.setContent(this); tabHost.addTab(ts); ts = tabHost.newTabSpec("ID_2"); ts.setIndicator("2"); ts.setContent(this); tabHost.addTab(ts); ts = tabHost.newTabSpec("ID_3"); ts.setIndicator("3"); ts.setContent(this); tabHost.addTab(ts); tabHost.setOnClickListener(this); tabHost.setOnTabChangedListener(this); } public void onClick(View v) { Log.d(LOG_KEY, "OnClick"); } public void onTabChanged(String tabId) { Log.d(LOG_KEY, "OnTabChanged"); }

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  • Is it a good practice to create a reference to application context and use it anywhere?

    - by kknight
    I have to use context in many places of my code such as database operations, preference operations, etc. I don't want to pass in context for every method. Is it a good practice to create a reference to application context at the main Activity and use it anywhere such as database operations? So, I don't need some many context in method parameters, and the code can avoid position memory leak due to use of Activity Context. public class MainActivity extends Activity { public static Context s_appContext; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); s_appContext = this.getApplicationContext();

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  • A Surface view and a canvas to move Bitmap

    - by John Apple Sim
    I have a SurfaceView and I want the Bitmap Logo inside it in the canvas to be movable What I'm doing wrong ? static float x, y; Bitmap logo; SurfaceView ss = (SurfaceView) findViewById(R.id.svSS); logo = BitmapFactory.decodeResource(getResources(), R.drawable.logo); x = 40; y = 415; ss.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent me) { try { Thread.sleep(50); } catch (InterruptedException e) { e.printStackTrace(); } switch(me.getAction()) { case MotionEvent.ACTION_DOWN: x = me.getX(); y = me.getY(); break; case MotionEvent.ACTION_UP: x = me.getX(); y = me.getY(); break; case MotionEvent.ACTION_MOVE: x = me.getX(); y = me.getY(); break; } return true; } }); public class OurView extends SurfaceView implements Runnable{ Thread t = null; SurfaceHolder holder; boolean isItOK = false; public OurView(Context context) { super(context); holder = getHolder(); } public void run (){ while (isItOK == true){ //canvas DRAWING if (!holder.getSurface().isValid()){ continue; } Canvas c = holder.lockCanvas(); c.drawARGB(255, 200, 100, 100); c.drawBitmap(logo, x,y,null); holder.unlockCanvasAndPost(c); } } public void pause(){ isItOK = false; while(true){ try { t.join(); } catch (InterruptedException e) { e.printStackTrace(); } break; } t = null; } public void resume(){ isItOK = true; t = new Thread(this); t.start(); } } Now the surface view is just black .. nothing happens also its not colored 200, 100, 100

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  • Focus problem with multiple EditText's.

    - by Ashish
    I have an activity with two edittext controls. I am calling the requestFocus on the second edittext field since by default the focus goes to the first edittext control. The focus appears to be in the second edittext field (the second one gets the highlighted border), but if we try to enter any characters using the hardware keyboard the text appears in the first edittext control. Any ideas why it would be happening?

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  • How can I have a Windows 7 VMware guest without mouse support?

    - by Matthew Read
    Despite having vmmouse.present = "FALSE" mouse.vusb.absDisabled = "TRUE" pref.motionUngrab = "FALSE" in my .vmx file and a customized VMware Tools installation on the guest that does not include the mouse driver, I somehow have fully integrated mouse support for my Windows 7 VM. I can smoothly mouse from the host into the guest without needing to click or Ctrl+G in and Ctrl+Alt out. I don't want this because of the issues it causes with games. How can I get the VM to have no special mouse support while still having VMware Tools installed for its other functions (network, graphics, etc.)? The mouse works as I want without VMware Tools but not otherwise — again, despite not installing the mouse driver and having all those settings trying to disable it. Device Manager shows that the generic Windows PS/2 mouse driver is being used and not the virtual mouse driver. Guest and host are both Windows 7 Ultimate SP1, x86 and x64 respectively. I'm using VMware Player 3.1.4 and the VMware Tools installed is the latest, 8.4.6.16648.

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  • Allowing AsyncTask to Manipulate Values in Different Activity Classes

    - by Matt
    Hi guys, This title may seem strange, so let me try to explain what I'm trying to do. I have several activity classes, each representing a different view in my application. My initial activity class gets loaded when the application launches. The user enters values and eventually a TCP socket is opened, and I then use AsyncTask to listen for and respond to messages from the server. I'd like for this AsyncTask class to essentially listen until the app is closed/error condition reached, and be able to update values in other activity classes after they are started. Does this make sense (it's been a long, frustrating night)? I know that static activity class references are bad practice, and touching the UI thread from other activities is bad as well, but I'm having trouble finding a clean solution to this problem. Maybe using AsyncTask is not the best approach here? Should I be using a service instead or something else entirely? Thanks in advance.

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  • How to stop an activity with GL view. Application not responding

    - by David
    I have an activity that I want to programmatically stop after some elapsed time. I have a GL view running. My understanding is that the GLSurfaceView.renderer is running in its own thread, so I created a handler instantiated from the activity. In the GLSurfaceView I post a message. The handler then attempts to stop the activity with the following: onStop(); finish(); The activity seems to close. However, if I try to restart the application, I get a blank screen, the phone is practically locked up and eventually I get a message that the activity in the application is not responding. I'm also getting geting a wake lock, ie PowerManager.newWakeLock(...). When I try to release it, I get an exception. Not sure if its the GL view of the wake lock which is causing me troubles. Any ideas appreciated.

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  • How do you make sure your pakcet is delivered to right client using public ip address

    - by TemporaryNickName
    So private IP addresses are 192.168.00 ~ 192.168.255.255 or 10.0.0.0 or 172.16.0.0 ~ 172.31.255.255 If I accepted a client to my serversocket, I can get the client's remoteIp address by using socket.getremotesocketaddress(); But I suspect the IP address that I'm getting from this method is only the public IP address and it must have more than one client using same public IP as this one (one like you see when you go on to the website www.whatismyip.com). So if I want to make sure that my packet is delivered to the right person using some IP address or otherthing that uniquely identifies a person, what should I have to do?

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  • How do I insert this subclass into my code?

    - by BamsBamx
    This is a very noob question so I hope you can help me with this... This is my built code: public class PantallaOpciones extends PreferenceActivity { private SharedPreferences preferences; @Override public void onCreate(Bundle savedInstanceState) { preferences = PreferenceManager.getDefaultSharedPreferences(this); findPreference("speechkeycode").setOnPreferenceClickListener(keycodedialog); Preference.OnPreferenceClickListener keycodedialog = new Preference.OnPreferenceClickListener(){ public boolean onPreferenceClick(Preference preference){ keycodedialog(); return false; }}; } private void keycodedialog(){ final Dialog dialog = new Dialog(this); dialog.setContentView(R.layout.keycodedialog); dialog.setTitle("Speech keycode"); final TextView keypresstext = (TextView) findViewById(R.id.keypresstext); Button savekeycode = (Button) dialog.findViewById(R.id.btnsavekeycode); savekeycode.setOnClickListener(new OnClickListener() { public void onClick(View v) { dialog.dismiss(); } }); Button resetkeycode = (Button) dialog.findViewById(R.id.btnresetvalue); resetkeycode.setOnClickListener(new OnClickListener() { public void onClick(View v) { dialog.dismiss(); } }); dialog.show(); } Okay, now I want to add this code to dialog: public boolean onKeyDown(int keyCode, KeyEvent event) { //SOME STUFF return super.onKeyDown(keyCode, event); } So I want to listen to a keypress when dialog is opened and show the keycode of hardware press by using textview.settext()... The question is: how do I insert public boolean onKeyDown into the dialog??? Thanks in advance!! :)

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  • Reordering Lists like playlists in the media player

    - by CrazyBS
    Hi, I have a list of items that are displayed using a ListView from a SQLCursor. The SQL table includes(as well as other things) a _id field and an order field. I use the order field to sort the list before it gets to the ListView. What I need is a widget like the MediaPlayer has in its playlist view. It allows you to click the icon and drag the item in the playlist around and put it into a new order. With that ability I can then retrieve the new order and update the SQL table with the new order. However, I am not having any luck finding any clues to help me add that functionality into my program. The question is whether I can use existing functions to help me, or do I need to manually program motion events and such until I get nearly the same functionality.

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  • Can I update an image in the drawable directory from code?

    - by kknight
    I have a picture in res/drawable directory: res/drawable/picture.jpeg. Can I dynamically update this picture.jpeg from code? i.e. I want to use another picture to replace this picture in the drawable directory dynamically. If I can, what path should I use to access the picture? Should I use "res/drawable/picture.jpeg"? Thanks.

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  • Force Tab Activity creation?

    - by Daniel
    I have a TabHost and several tabs added to it. Problem: The activities on these tabs are not created until the tab is pressed. My tabhost is broadcasting intents but my broadcast receivers are not registered until onCreate in my tab activities is called. Is there any way to force activity creation? Maybe my tabhost can call setCurrentTab and switch back to main tab(0), but is that really the best option available?

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  • Selecting and deselecting radio buttons

    - by Vivek Kalkur
    I am developing a quiz application which consists of a question and three options and I am using radio buttons for these options.My query is,I click on one of the options and whenever i want to click another option, the previous option remains in the checked state and it does the same whenever I click on the third option too. I need a solution where in it behaves as a natural radio button,only one option is checked at any point of time.

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  • How does one use TrafficStats.incrementOperationCount()?

    - by Dheeraj
    The documentation for TrafficStats.incrementOperationCount() says: Increment count of network operations performed under the given accounting tag. This can be used to derive bytes-per-operation. I want to find the total number of bytes transferred during a particular network operation. Since this API claims to help in deriving bytes-per-operation, can someone help me understand how to use it?

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