Android :: Refresh View In Application
Sep 9, 2010
I am having a problem trying to refresh a View in an Android application. I have a button that have a image and what I need to do is to change the image when someone clicked the button. Where is the problem? The image don't refresh until the activity finished proccessing the code. Any idea how I can refresh the image as soon as It execute the instruction
buttton1.setBackgroundDrawable(getResources().getDrawable(R.drawable.f1));
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May 3, 2010
After implementing some Android Apps, including several Map activities, I try to refresh the activity when the GPS listener's onLocationChanged() mehtod is called. I have no idea how to tell the map activity to refresh on its own and display the new coords. the coords to store will have to be in global values, so that the location listener will have access to it. In my sample GPS-class (see code below) I just changed the text of a text view....but how to do that in map view?
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Sep 17, 2010
I want to programatically refresh Gallery every time I download a video from my application. It doesn't automatically show up in the gallery.
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Jul 24, 2010
I have a ListView that contains some data from sqllite table.the table is updated by some other process, and I would like to refresh it's data.The strange thing is that if I open another activity, then go back -it WILL refresh itself.
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Jul 23, 2009
Currently I am working on IM, and I am facing problem during implementations. I am implementing this messenger using XMPP client and using smack API for implementing all features like contacts list, online offline status, and chat also. Prblem which I am facing:
Its my list view where I am showing contacts list
public class ContactsList extends ListActivity implements OnClickListener{
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ContactsManager manager = new ContactsManager(this); setListAdapter(manager);
} public class ContactsManager extends BaseAdapter{
private LayoutInflater mInflater; private Bitmap mainListIcons[];
private static ContactsInfo contactsInfo; public ContactsManager(Context context) {
mInflater = LayoutInflater.from(context); mainListIcons= new Bitmap[3];
mainListIcons[0] = BitmapFactory.decodeResource (context.getResources(), R.drawable.online);
mainListIcons[1] = BitmapFactory.decodeResource (context.getResources(), R.drawable.offline);
} @Override public int getCount() { return Global.contacts.size();//
contacts is vector where I am saving my contacts
} public Object getItem(int position) { return position;
} public long getItemId(int position) { return position;
} public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder; if (convertView == null) {
convertView = mInflater.inflate (R.layout.main_settings_lists_icon_text, null);
holder = new ViewHolder(); holder.mainListDisplayText = (TextView) convertView.findViewById(R.id.main_settings_lists_text);
holder.mainListDisplayIcon = (ImageView) convertView.findViewById(R.id.main_settings_lists_icon);
convertView.setTag(holder);}else{ holder = (ViewHolder) convertView.getTag();
} contactsInfo = (ContactsInfo)Global.contacts.elementAt (position);
String username = contactsInfo.getUsername(); String status = contactsInfo.getUserstatus();
if(status.equalsIgnoreCase("unavailable")) { older.mainListDisplayIcon.setImageBitmap(mainListIcons[1]);
}else{ holder.mainListDisplayIcon.setImageBitmap(mainListIcons[0]);
} holder.mainListDisplayText.setText(username); return convertView;
} static class ViewHolder { TextView mainListDisplayText;
ImageView mainListDisplayIcon;}
public class ContactsHandler implements RosterListener {
@Override public void entriesAdded(Collection<String> c) {
for(String s:c) { Log.i("ADDED Contacts",s);
} } @Override public void presenceChanged(Presence p) {
Log.i("PRESENCE",p.getFrom()); Log.i("IS Available",""+p.isAvailable());
Log.i("UserStatus",""+p.getStatus()); if(p.getFrom().contains("@") && p.isAvailable())
{ ChatManager chatmanager = Connection.getVopConnection getXMPPConnection().getChatManager();
Chat newChat = chatmanager.createChat("gulfam@imran-mehmood", new ChatHandler());
} } }
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Oct 26, 2012
I'm writing an application for Android and have multiple Activities, there are three to be exact. When a user drills down to the record they would like to view, they can modify it.
The issues is that when I click the back button to move to the previous screen, i'd like to refresh it to reflect the update performed by the end user. I can't figure out how to hook onto the appropriate event and then refresh my data on that view.
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Feb 23, 2010
I need to add a shake feature that will refresh my Anroid application.All I find of documentation involves implementing the SensorListener, but Eclipse tells me it's deprecated and suggest SensorEventListener. Anybody that has a nice guide to how I go about creating this "shake controller"?
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Jan 28, 2010
I've got the weirdest problem ever with my HTC Hero.The gmail application does not refresh automatically so as to fetch incoming e-mail. Even worse, it doesn't even do that when I manually do that (menu --> refresh)There is one situation: If I change one of the settings for Labels ("description = select which labels are syncronised") it does fetch e-mail from my inbox, but only if I manually refresh. It doesn't make any sense that my gmail application can only fetch new mails after a (random) modifcation in my settings. I would like my gmail to refresh .... well.. as often as possible and automatically, since I will not know beforehand when someone has sent me a mail.
For the moment my label settings are as follows:days for syncronisation: 1 day
labels
inbox: syncronise for all items
with star: syncronise for all items
eehh. well actually all my folders are "syncronise for all items"
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Jan 5, 2010
I have Google Voice now and have the App installed on my phone. I have the refresh rate set for every five mins but it wont refresh.
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Aug 4, 2010
I am working on an application where I need to display some locations on a map and in a list view where the user should be able to toggle between these views(activities?). I want the toggle button(s) to be in my custom titlebar like in the images (if they are attached). What is the best practice for this? Tab view seems like a solution but can I customize the tab buttons? Should the map and list be in different activities or the same? Now I have two different activities one extending MapActivity and one extending ListActivity but no way to toggle between them. Is it possible to load activities into a FrameLayout?
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Oct 16, 2009
I am looking to create an app with plugin functionality. What I want is to allow a separate plugin "app" to provide me with the view, and take care of the updating of the view that I will use in my list adapter. Essentially, I want the separate app to take care of the bindView and newView methods of my adapter.
I am looking at RemoteViews, but I am not sure if that is exactly what I need, if it would work, or maybe it's what I have to use, since it would be cross-process.
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Jul 2, 2010
At the time of button click I need to show my data in landscape view. How to show the data in landscape view?
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Aug 14, 2009
The Android's own app Gallery is very cool, now I have a requirement to add an external app to view the media, let me describe it detail, the following is the steps: 1. Run android's Gallery, in the first page, Gallery list all directorys which include media (image / video). 2. Long touch one of the directory, then a context menu will pop up where has two menu items: Slideshow & View. My requirement is to lunch other app when clicking the menu item View, for example, in other app (I will implement it) user can multi select the medias then process them (i.e. delete them, compress them to a file, or copy them to other place)..........
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Jun 10, 2010
whats a good screenshot app that you guys use? also is there a good app where you can view a live (or close to live) feed of your phone on your computer? and by live feed i mean a live feed of your screen, not your camera. i already have an app called bambuser that lets computers view a live feed from your camera.
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May 1, 2010
I want to implement the same behavior of the notification view in the official Facebook app.
The "notifications" tab are at the bottom and can drag/drop via fingers to full screen. How can I do that? I've tried it via ViewFlipper and Animation. But no success. The app "Zedge" has the same in the "search" function. Via drag/drop you can open the "search" view.
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Oct 19, 2010
Curious to know the reason behind not allowing updating UI elements from background thread in Android. Will main thread does something more (probably interacting with framework) after updating the UI elements so that changes can be seen on the screen? Is it the same case with other GUI tool kits?
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Aug 2, 2010
I am working on Android App and unable to synchronize View with Hardware. Let me explain.
1) I mute and unmute microphone of Android based on random values (which are random sleeps) stored in array A, from within run method of Thread 1.
2) I draw blue pulses that reflects the mutes of microphone. This is done by independent View class.
3)I move a red line across the graph drawn in above view, by calling from within onTick of a countdown timer.
I start the two threads one after other, this way:
Thread1.start counter.start();
How to synchronize both of these, I want to do three things at a time and avoid multiple threads. Three things are: Draw the pulses (which is constant), make the red line move across x axis and touch the blue pulse as soon as the phone is muted, and keep moving every second, the width of pulse reflects duration of delay. as soon as microphone is about to be unmuted, red line should leave the pulse and move forward. Currently, code is doing what I want. but there is no synchronization. Either microphone does its job first, or graph moves fast. They are not in Sync. Is there a way to hold a thread, force it to behave as coutdowntimer or sync both of them. I cannot embed the red line movement in thread 1 because, it will have to progress across x axis every second.
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Aug 19, 2010
You think that google would put forth a much better effort for the email app on Android but ironically, its just a giant epic fail Inbox view only? WTF was Google thinking? It really does suck that i have to use the web app in order to have the full functionality of gmail. I understand Google is moving forward with web apps and the cloud and all that but damn, they leave us hanging like that?
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Sep 29, 2010
I have a user's twitter handle. Right now I'm opening it through a web page like:
String url = "http://www.twitter.com/" + "example_handle";
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
If the user has the Twitter android app installed, is there a different intent I can use which gives the user the option to view that user's twitter feed in the Twitter app, instead of forcing them directly to a browser? I'm not sure if the author's of the Twitter app have exposed any such intent.
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Feb 26, 2010
I want to do something very similar (in terms of appearance) to the app details activity of the Market app. It looks like a cross between linear layout (not all rows the same), list (scrolling nature), preferences (headings). My guess is its a linear layout in a scroll view (ignoring activity header/footer) and the headings are just hard coded.
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Jul 19, 2010
Is there an Application to Store SMS to The Gmail Calendar and View them by date. It would be just like the CallTrack App but for SMS. The Calltrack App uploads the name and phone number of person that you called and that called you. If anyone knows of an Application that does the same for SMS please let me know.
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Sep 23, 2010
I am trying to apply an animation to a view in my Android app after my activity is created. To do this, I need to determine the current size of the view, and then set up an animation to scale from the current size to the new size. This part must be done at runtime, since the view scales to different sizes depending on input from the user. My layout is defined in XML. This seems like an easy task, and there are lots of SO questions regarding this though none which solved my problem, obviously. So perhaps I am missing something obvious. I get a handle to my view by: ImageView myView = (ImageView)getWindow().findViewById(R.id.MyViewID);
This works fine, but when calling getWidth(), getHeight(), getMeasuredWidth(), getLayoutParams().width, etc., they all return 0. I have also tried manually calling measure() on the view followed by a call to getMeasuredWidth(), but that has no effect. I have tried calling these methods and inspecting the object in the debugger in my activity's onCreate() and in onPostCreate(). How can I figure out the exact dimensions of this view at runtime?
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Nov 17, 2009
Does anybody know of an app that can view Microsoft Access Snapshot (.snp) files? I think they're basic images, but a proprietary format. I haven't seen anything in the market that looks like it would do the trick. I get these emailed to me from work and would love to be able to open them on my phone!
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May 5, 2009
How to pass the "Touch" event to the application behind the translucent view? The view is an input view (IMF, implemented by "InputMethodService.setInputView()"). Need help.
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May 25, 2010
The application I am developing is in large parts a background-only Service BUT requires some settings that the user must add. Is there a way to integrate applications with the common Settings application/view/activity?
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Aug 2, 2010
I am trying to set up a ViewFlipper that changes a SlidingDrawers content each time a button is pressed. So far every view I set up worked fine, but now I am trying to create a ListView (including single_choice_mode) within a child view of the ViewFlipper, but my attempt only let to a NullPointerException. As I only discovered ViewFlipper today, I am not yet familiar with it and may not have understood it completely. if someone could give me a hand and help me find out what I have done wrong, that would be great. Here is what I have done:
The code for the onClick event of the ImageButtons:
public void onClick(View v){
if (v == btnExposure){
mFlipper.setDisplayedChild(0); }
else if (v == btnProperties){
mFlipper.setDisplayedChild(1);}
else if (v == btnSpecialEffects){
mFlipper.setDisplayedChild(2);.............
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Nov 19, 2009
Anyone know of an app that would let you view a webcam on your Droid? Keep an eye on the daggets at home while I'm away? Would be cool, but If It dosen't exist wonder why?
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May 5, 2010
i want to display images on android screen.and the images should be scrolled in vertical way.how should i do the coding?
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Jul 8, 2009
I've seen a few other threads on this subject, but none that addresses my need which is to not only find the app in the market via the market uri, but display it as if the user had navigated to it. The closest anyone has gotten to this answer is to show how to bring up the Android Market app and browse for the app you want which shows the single result in a list that the user must still select to get to the screen I want to display.
Here's my existing code that does exactly that:
private static final String MY_MARKET_APP = "com.some.silly.name";
Intent marketLaunch = new Intent(Intent.ACTION_VIEW);
marketLaunch.setData(Uri.parse("market://search?q=pname:" + MY_MARKET_APP));
startActivity(marketLaunch);
I don't want to have to force the user to select this single item from the list - just bypass that and bring up the next screen.
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Jul 30, 2010
PDF, docx, xls, ppt. Is there an application on the market that allows me to view all these types of files? I have seen a few, but they all get crappy reviews. Anyone have one that works for them? Also, is it free or paid?
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