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?
I have a START and STOP button in the main screen of an App. there are some GUI and threads that are instantiated when I click on START. When I click on stop, I want everything to be stopped and the activity should come back to its origin state. To the state that is exactly same like when launched (when we tapped on App icon in mobile).Is it possible to do this? I tried with finish() , this killed the app and exited . I don't want to exit from main screen. rather, on clicking STOP I want app to come back to origin or born state.
I have one activity. OnCreate the activity gets the source (html) of a web page to a string and presents the result (after parsing it a bit) in a textview. I would like the activity to reload/refresh periodically to always present the latest information.
I have created map view using XML layout in MapActivity and want to use this map view in another Activity group. I got mapview object in Acitivity group using GetWindow.Decorview(), MAP view is also displayed in the same layout of Activity Group. But without any image, only white background with some grid. Map view is not getting refreshed when i scroll on Map view. But if i launch independently MapActivity , i am able to see the map and it is getting refreshed when i scroll on the map. May I know how can i use and refresh Map view in an activity group? As Mapview can only be created/inflated in MapActivity.
I have an Android Activity with a RelativeLayout and I have implemented the following method to prevent the activity from being recreated on change of Orientation:
CODE:.............. I am obviously not doing anything in this method, but it worked perfect when using a LinearLayout. Now however, using RelativeLayout, my layout is all messed up when changing to landscape orientation.
What is the most efficient way to have the screen redraw correctly without having the activity restarted again with a call to onCreate?
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.
I need to pass a value back to the same activity and refresh the activity to generate new data. Can anyone please provide me some ideas/guidance on how to do it? I had try using intent to call the same activity but it doesn't work. Here is the code which i tried to use intent code...
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.
I've got a bunch of live wallpapers for sale, and have a lot of 1-star comments that just say "Doesn't open". This is because there's no launcher activity, so the open button is greyed out after download. I'm attempting to fix this by including an activity that explains what to do, and I'm trying to avoid useless app clutter by disabling that activity once they've successfully used the wallpaper. This seems to work fine, the problem is the app icon doesn't go away right away. It stays in the app drawer and if you tap it you get a "this has been disabled" message. Eventually it will be removed if the phone is rebooted or if the home app is restarted. I'd like to clean this up. Is there a way to tell Home to refresh this list, or to otherwise tell it to remove the icon from the listing? It seems a bit rude to process kill Home for this purpose, and clearly something like this happens when an app is installed/ uninstalled.
I am developing file browser to my media player UI i have written in my OnItemClickListener() in that i called the method like adapter.notifyDataSetInvalidated() method but it is not working please help me to refresh my list.based on onItemClickListener() method.
I have an activity with a HorizontalScrollView. When it opens, I start filling this view (or rather, a container layout inside it) with another views. This is done from another thread by using handler.post.
The views are added in bunches of 15, and when there are no more views to add, I start updating them with new data (this is a kind of streaming data from a server).
The problem is that the scrollview is empty until all of the views are added. As soon as they are all added and start updating, the scrollview gets drawn.
How do I refresh it in the process of adding views? I don't want the screen to be empty for 3 seconds while all of the views are added.
I would like to make a Linear Layout that was created from xml invisible, and another Linear Layout visible to replace it. The replacement layout starts out as invisible. When I make the originally visible layout invisible, it still leaves space for it on the screen. How can I refresh the screen so that space is gone?
I have a strange problem with StateListDrawable or maybe (probably) I'm missing something. I created a test application for it and the same problem occurs. So, this is my StateListDrawable resourse in file test_selection.xml
When Activity starts I try to set the state of my Drawable (the StateListDrawable) with the value SELECTED. It seems all very simple.... but the problem is that the state is not shown. If, later, I click a button and execute the method updateView() the state changes. Where is my problem? Where am I wrong?
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
In my app, I have different activities with listviews. The datas come from a server with a REST method, and it's only done once, when I start the application.
The pattern that I'd like to set is to precharge all the listviews with the JSONs that I already have in local, and in parallel, launch a thread that get the new JSONs files with my REST methods, and then update the listviews.
For now, when I start the app, I parse my JSONs files, and build all the lists of objects. I access them later in a static way, from my lists adapters.
So I would like to know the best way to launch this REST thread, and update the listview. Should I use AsyncTask ? A service ? and then, when I update my local JSONs, I have to re-parse them, updates the lists of object, and call in my adapters NotifyDataChanged ?
I'm using eclipse for Android development, and the editor always seems to take a while to actually update and recognize if I change an ID in a layout, then try to use it in a class with R.id.someId. Is there a way to force a refresh?
I don't need a strict code related answer I just need somebody to tell me what I am missing.My application has to retrieve from a web service (xmlrpc) the positions of some users I know and update their position on a MapView.So I decided to use a Service and an Activity extending MapActivity to show results. I thought about two solutions:
I ) start the service and make it ask every minute for these positions and send them to the activity as a bundle via intent. (This didn't work out well, since once shown I couldn't find a method to let the activity continue refresh itself until she stop receiving intents+data from the service)
II ) Incorporate a thread within the activity which starts the service via context.startService(...) every minute. And the MapUI refresh itself once the service send back an intent and stop itself. (Maybe I will fall in the same problem category as before I haven't tryied yet).
I am also giving directions (via maps.google ws) in this way I'd like to refresh only users positions on the map and save the route.What Am I missing do you have any suggestions? related to activities/services internal mechanics, don't know launch modes, use broadcast receivers or intent filters?
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"?
I'm currntly struggling with an Android problem whose answer is maybe simple.(I'm new in Android developing)I have a main activity that builds a TabHost with two Tabs (each represents another Activity)As far as I know I can't receive broadcast messages within an activity - so the only thing I could do is to start a new activity out of my Broadcast Receiver. But instead I want to change my Tab View or show the alert.Are there any possibilities to access an existing Activity from a broadcast receiver class?
I have two cursor, one of them from contact content provider, other one from database. id fields are sycnhorinzed.i want to show them in same column with two row in list. i m think that i have to use simpleCursorAdapter, because arrayadapter and other adapters can not show two cursor in a list.
So my list is not refresing/updating altough all cursors all results are updating.
What is the best way to display a database queries results on the screen using ListActivity? I need the db queries to run in the background and I also need to be able to make different queries and refresh the screen according to the query result. I am using the ListActivity class with a SimpleCursorAdapter in order to display the db queries result on the screen. At the moment, I am doing the db queries at the background using AsyncTask, when getting the results I want the list to be updated immediately, but I can't find a good way to do it. It worked only when I used the changeCursor(cursor) function to set the adapter to a new cursor with the new results. But I don't think this is a good solution since it seems to stuck the UI for a while. I also found some posts about notifyDataSetChanged() but I am not sure if/how/when I should be using it with a SimpleCursorAdapter to make the view refresh.