2014/10/16 上午 08:25:39
android Programming Glossary: taskRemoving an activity from the history stack http://stackoverflow.com/questions/1898886/removing-an-activity-from-the-history-stack to the splash screen. I think I can accomplish this with tasks ie. start a new task on #3 but wanted to see if there was simpler.. I think I can accomplish this with tasks ie. start a new task on #3 but wanted to see if there was simpler method Thanks ..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon on in my app data being PUSHed to the device lists with tasks that always should be there etc . I don't know what lists with.. always should be there etc . I don't know what lists with tasks that always should be there means but the data being PUSHed.. not be done by an activity in any case. Use a scheduled task via AlarmManager to update your data for maximum reliability...
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android XML based web services are a slightly non trivial task on Android at this time. Not knowing NetBeans I can't speak..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something what if the activity gets destroyed which triggered the task This can happen all the time e.g. because you flipped the screen... all the time e.g. because you flipped the screen. If the task would hold a reference to the context that created it you're.. works since a Handler loosely binds the context and the task you can exchange messages between them without risking a leak..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background it will return importance IMPORTANCE_FOREGROUND for your task no matter whether it is actually in the foreground or not. Call.. but to do things like show the user the running apps or a task manager or such. Yes there is a list kept in memory for these..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working task progress dialog orientation change is there any 100 working.. call your setter to associate your new activity with the task. Step #6 Do not refer to the activity data member from doInBackground..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android all singletons from our project in favor of lightweight task scoped objects which can easiliy be re created when you actually..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible I change the order of the execute statements only the foo task will produce output. Am I missing something obvious here and.. Hero running Android 2.1. Hmmm ... android android asynctask share improve this question AsyncTask uses a thread pool.. this was changed to a pool of threads allowing multiple tasks to operate in parallel. After HONEYCOMB it is planned to change..
http://stackoverflow.com/questions/4538338/progressdialog-in-asynctask AsyncTask to this Thank you Houssem android android asynctask progressdialog share improve this question this class performs.. tvSorties.setText Programme des soir矇es just call here the task AsyncTask task new ProgressTask this .execute public void setMessages.. Programme des soir矇es just call here the task AsyncTask task new ProgressTask this .execute public void setMessages List..
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences de serialize the ArrayList object which has the list of tasks into string. In the addTask method of the TaskManagerApplication.. Task t if null currentTasks currentTasks new ArrayList task currentTasks.add t save the task list to preference SharedPreferences.. new ArrayList task currentTasks.add t save the task list to preference SharedPreferences prefs getSharedPreferences..
Caused by: android.os.NetworkOnMainThreadException [duplicate] http://stackoverflow.com/questions/13136539/caused-by-android-os-networkonmainthreadexception 1 Don't write network call in Main UI Thread Use Async Task for that. 2 Write below code into your MainActivity file after..
How to parse complex JSON file in android http://stackoverflow.com/questions/13576676/how-to-parse-complex-json-file-in-android a new non ui thread task to download json data DownloadTask downloadTask new DownloadTask Starting the download process.. ui thread task to download json data DownloadTask downloadTask new DownloadTask Starting the download process downloadTask.execute.. download json data DownloadTask downloadTask new DownloadTask Starting the download process downloadTask.execute strUrl Getting..
How one interface can be used for different background android tasks? http://stackoverflow.com/questions/14253421/how-one-interface-can-be-used-for-different-background-android-tasks I have an activity class with two background task Async Task which have been defined in two separate classes like public.. classes like public class GettingBeaconsList extends AsyncTask String String String public class GettingAirports extends AsyncTask.. String String public class GettingAirports extends AsyncTask String String String which are initialized and executed in MainClass..
Calling hidden API in android to turn screen off http://stackoverflow.com/questions/1875669/calling-hidden-api-in-android-to-turn-screen-off call this task to turn off the screen in a fadeout. class Task implements Runnable public void run if bright 0 setBright.. go to 0 screen off bright serviceHandler.postDelayed myTask 100L else setBright float 0.0 bright 10 put bright back ..
Android: What is better - multiple activities or switching views manually? http://stackoverflow.com/questions/2072244/android-what-is-better-multiple-activities-or-switching-views-manually it's telling that the Android guidelines for Activity and Task Design don't mention switching Views at all it's centered around..
Android - Controlling a task with Timer and TimerTask? http://stackoverflow.com/questions/2161750/android-controlling-a-task-with-timer-and-timertask Controlling a task with Timer and TimerTask I am currently trying to set up a WiFi Scan in my Android application.. access points every 30 seconds. I have used Timer and TimerTask to get the scan running correctly at the intervals which I require... trouble stopping and then restarting the Timer and TimerTask. Here is my code TimerTask scanTask final Handler handler new..
View the Task's activity stack http://stackoverflow.com/questions/2442713/view-the-tasks-activity-stack the Task's activity stack I just started developing a simple Android.. to view the Activity stack that is associated with a Task Is there any way through the DDMS tool or through any other.. one activity Activities in Current Activity Manager State TaskRecord 44d07218 #4 A android.task.contacts clearOnBackground..
AsyncTask, RejectedExecutionException and Task Limit http://stackoverflow.com/questions/2492909/asynctask-rejectedexecutionexception-and-task-limit RejectedExecutionException and Task Limit I am fetching lots.. RejectedExecutionException and Task Limit I am fetching lots of thumbnails from a remote server.. server and displaying them in a grid view using AsyncTask. The problem is my grid view displays 20 thumbnails at a time..
How to handle an AsyncTask during Screen Rotation? http://stackoverflow.com/questions/2620917/how-to-handle-an-asynctask-during-screen-rotation to handle an AsyncTask during Screen Rotation I read a lot on how to save my instance.. out which one works best for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call.. for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call the isFinishing method..
http://stackoverflow.com/questions/2720164/android-process-killer for anything outside of development debugging purposes. Task management is the responsibility of the Android O S the tasks.. When you see the list of running apps in apps like TaskKiller or Quick System Info many of them are not actually running..
Android Emulator won't run application started from eclipse http://stackoverflow.com/questions/2793956/android-emulator-wont-run-application-started-from-eclipse seems to be to kill the adb.exe process in Windows Task Manager while the emulator is still running . from http vikashazrati.wordpress.com.. the apk isn't installed. So you need to go back to Windows Task Manager and once again kill the adb.exe process. NB I find that.. process. NB I find that adb.exe doesn't reappear in the Task Manager unless I restart Eclipse so after closing an emulator..
Android : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask by something like mChart.setImageBitmap new DownloadImagesTask .execute graph_URL and public class DownloadImagesTask extends.. .execute graph_URL and public class DownloadImagesTask extends AsyncTask String Void Bitmap @Override protected Bitmap.. graph_URL and public class DownloadImagesTask extends AsyncTask String Void Bitmap @Override protected Bitmap doInBackground..
Difference between Service, Async Task & Thread? http://stackoverflow.com/questions/3264383/difference-between-service-async-task-thread between Service Async Task Thread What is the difference between Service Async Task Thread... Task Thread What is the difference between Service Async Task Thread. If i am not wrong all of them are used to do some stuff.. need to use a Handler for this but read further. An AsyncTask is an intelligent Thread that is advised to be used. Intelligent..
http://stackoverflow.com/questions/6039158/android-cancel-async-task Cancel Async Task I use an async task to upload an image and get some results... public void onCancel DialogInterface dialog myTask.cancel true finish Now as i have mentioned earlier from SDK..
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences object which has the list of tasks into string. In the addTask method of the TaskManagerApplication class we have to get the.. list of tasks into string. In the addTask method of the TaskManagerApplication class we have to get the instance of the shared.. ArrayList using the putString method public void addTask Task t if null currentTasks currentTasks new ArrayList task..
android viewPager implementation [closed] http://stackoverflow.com/questions/7244813/android-viewpager-implementation viewPager implementation closed My Task is to make clean scroll right to another screen then press on..
Removing an activity from the history stack http://stackoverflow.com/questions/1898886/removing-an-activity-from-the-history-stack back button they just go to the homescreen instead of back to the splash screen. I think I can accomplish this with tasks ie. start a new task on #3 but wanted to see if there was simpler method Thanks android share improve this question.. go to the homescreen instead of back to the splash screen. I think I can accomplish this with tasks ie. start a new task on #3 but wanted to see if there was simpler method Thanks android share improve this question You can also implement..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon at present . As I said above there is a lot of things going on in my app data being PUSHed to the device lists with tasks that always should be there etc . I don't know what lists with tasks that always should be there means but the data being.. my app data being PUSHed to the device lists with tasks that always should be there etc . I don't know what lists with tasks that always should be there means but the data being PUSHed to the device is a pleasant fiction and should not be done.. being PUSHed to the device is a pleasant fiction and should not be done by an activity in any case. Use a scheduled task via AlarmManager to update your data for maximum reliability. Our users log in and cant be doing that everytime they get..
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android format. Or using XMPP for messaging. But that is just conjecture. XML based web services are a slightly non trivial task on Android at this time. Not knowing NetBeans I can't speak to the tools available there but I agree that a better library..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something a strong reference to a context object . The reason is obvious what if the activity gets destroyed which triggered the task This can happen all the time e.g. because you flipped the screen. If the task would hold a reference to the context that.. gets destroyed which triggered the task This can happen all the time e.g. because you flipped the screen. If the task would hold a reference to the context that created it you're not only holding on to a useless context object the window.. context instances to an AsyncTask but a Handler instance. That works since a Handler loosely binds the context and the task you can exchange messages between them without risking a leak right . But that would mean that the premise of AsyncTask..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background from your application UI thread it will return importance IMPORTANCE_FOREGROUND for your task no matter whether it is actually in the foreground or not. Call it in the background thread for example via AsyncTask and.. APIs are not there for applications to base their UI flow on but to do things like show the user the running apps or a task manager or such. Yes there is a list kept in memory for these things. However it is off in another process managed by threads..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working task progress dialog orientation change is there any 100 working solution I download some data from internet in background thread.. is not null cast it to your AsyncTask class and call your setter to associate your new activity with the task. Step #6 Do not refer to the activity data member from doInBackground . If you follow the above recipe it will all work...
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android Android framework engineer thanks. We are bit by bit removing all singletons from our project in favor of lightweight task scoped objects which can easiliy be re created when you actually need them. Singletons are a nightmare for testing and if..
Running multiple AsyncTasks at the same time — not possible? http://stackoverflow.com/questions/4068984/running-multiple-asynctasks-at-the-same-time-not-possible bar bar bar bar The second AsyncTask never gets executed. If I change the order of the execute statements only the foo task will produce output. Am I missing something obvious here and or doing something stupid Is it not possible to run two AsyncTasks.. descr. accordingly. I don't have this problem with an HTC Hero running Android 2.1. Hmmm ... android android asynctask share improve this question AsyncTask uses a thread pool pattern for running the stuff from doInBackground . The issue.. serially on a single background thread. Starting with DONUT this was changed to a pool of threads allowing multiple tasks to operate in parallel. After HONEYCOMB it is planned to change this back to a single thread to avoid common application..
http://stackoverflow.com/questions/4538338/progressdialog-in-asynctask Log.e ImageLoader t.getMessage t Can you please help me add AsyncTask to this Thank you Houssem android android asynctask progressdialog share improve this question this class performs all the work shows dialog before the work and dismiss.. tvSorties TextView findViewById R.id.TVTitle tvSorties.setText Programme des soir矇es just call here the task AsyncTask task new ProgressTask this .execute public void setMessages List Message msgs messages msgs share improve this..
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences after API 11 its simpler we have to serialize and de serialize the ArrayList object which has the list of tasks into string. In the addTask method of the TaskManagerApplication class we have to get the instance of the shared preference.. ArrayList using the putString method public void addTask Task t if null currentTasks currentTasks new ArrayList task currentTasks.add t save the task list to preference SharedPreferences prefs getSharedPreferences SHARED_PREFS_FILE Context.MODE_PRIVATE.. method public void addTask Task t if null currentTasks currentTasks new ArrayList task currentTasks.add t save the task list to preference SharedPreferences prefs getSharedPreferences SHARED_PREFS_FILE Context.MODE_PRIVATE Editor editor prefs.edit..
Caused by: android.os.NetworkOnMainThreadException [duplicate] http://stackoverflow.com/questions/13136539/caused-by-android-os-networkonmainthreadexception improve this question There are two Solution of this Problem. 1 Don't write network call in Main UI Thread Use Async Task for that. 2 Write below code into your MainActivity file after setContentView R.layout.activity_main if android.os.Build.VERSION.SDK_INT..
How to parse complex JSON file in android http://stackoverflow.com/questions/13576676/how-to-parse-complex-json-file-in-android .getString URL URL to the JSON data String strUrl URL1 Creating a new non ui thread task to download json data DownloadTask downloadTask new DownloadTask Starting the download process downloadTask.execute strUrl Getting a reference to ListView.. URL to the JSON data String strUrl URL1 Creating a new non ui thread task to download json data DownloadTask downloadTask new DownloadTask Starting the download process downloadTask.execute strUrl Getting a reference to ListView of activity_main.. data String strUrl URL1 Creating a new non ui thread task to download json data DownloadTask downloadTask new DownloadTask Starting the download process downloadTask.execute strUrl Getting a reference to ListView of activity_main mListView ListView..
How one interface can be used for different background android tasks? http://stackoverflow.com/questions/14253421/how-one-interface-can-be-used-for-different-background-android-tasks can be used for different background android tasks Well I have an activity class with two background task Async Task which have been defined in two separate classes like public class GettingBeaconsList extends AsyncTask String String String.. task Async Task which have been defined in two separate classes like public class GettingBeaconsList extends AsyncTask String String String public class GettingAirports extends AsyncTask String String String which are initialized and executed.. like public class GettingBeaconsList extends AsyncTask String String String public class GettingAirports extends AsyncTask String String String which are initialized and executed in MainClass public class MainClass extends Activity implements..
Calling hidden API in android to turn screen off http://stackoverflow.com/questions/1875669/calling-hidden-api-in-android-to-turn-screen-off lp.screenBrightness value mywindow.setAttributes lp call this task to turn off the screen in a fadeout. class Task implements Runnable public void run if bright 0 setBright bright 100 start at 10 bright and go to 0 screen off bright.. if bright 0 setBright bright 100 start at 10 bright and go to 0 screen off bright serviceHandler.postDelayed myTask 100L else setBright float 0.0 bright 10 put bright back I used the handler task as a test for the method it worked when..
Android: What is better - multiple activities or switching views manually? http://stackoverflow.com/questions/2072244/android-what-is-better-multiple-activities-or-switching-views-manually of launching Activities increased immensely. Also I think it's telling that the Android guidelines for Activity and Task Design don't mention switching Views at all it's centered around an Activity as View design. share improve this answer..
Android - Controlling a task with Timer and TimerTask? http://stackoverflow.com/questions/2161750/android-controlling-a-task-with-timer-and-timertask Controlling a task with Timer and TimerTask I am currently trying to set up a WiFi Scan in my Android application that scans for WiFi access points every 30 seconds... a WiFi Scan in my Android application that scans for WiFi access points every 30 seconds. I have used Timer and TimerTask to get the scan running correctly at the intervals which I require. However I want to be able to stop and start the scanning.. when the user presses a button and I am currently having trouble stopping and then restarting the Timer and TimerTask. Here is my code TimerTask scanTask final Handler handler new Handler Timer t new Timer public void doWifiScan scanTask..
View the Task's activity stack http://stackoverflow.com/questions/2442713/view-the-tasks-activity-stack the Task's activity stack I just started developing a simple Android application while I'm still learning the platform. I'm using.. IDE with the ADT plugin 0.9.6. I need to know if it's possible to view the Activity stack that is associated with a Task Is there any way through the DDMS tool or through any other technique Essentially what I need is to be able to see the stack.. with two activities and behind that the launcher with one activity Activities in Current Activity Manager State TaskRecord 44d07218 #4 A android.task.contacts clearOnBackground true numActivities 2 rootWasReset true affinity android.task.contacts..
AsyncTask, RejectedExecutionException and Task Limit http://stackoverflow.com/questions/2492909/asynctask-rejectedexecutionexception-and-task-limit RejectedExecutionException and Task Limit I am fetching lots of thumbnails from a remote server and displaying them in.. RejectedExecutionException and Task Limit I am fetching lots of thumbnails from a remote server and displaying them in a grid view using AsyncTask. The problem.. and Task Limit I am fetching lots of thumbnails from a remote server and displaying them in a grid view using AsyncTask. The problem is my grid view displays 20 thumbnails at a time so that creates 20 AsyncTasks and starts 20 executes one per..
How to handle an AsyncTask during Screen Rotation? http://stackoverflow.com/questions/2620917/how-to-handle-an-asynctask-during-screen-rotation to handle an AsyncTask during Screen Rotation I read a lot on how to save my instance state or how to deal with my activity getting destroyed.. seem to be a lot of possibilities but I haven't figured out which one works best for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call the isFinishing method of the activity and if the activity.. possibilities but I haven't figured out which one works best for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call the isFinishing method of the activity and if the activity is finishing they wont..
http://stackoverflow.com/questions/2720164/android-process-killer possible to write task killer apps it shouldn't be encouraged for anything outside of development debugging purposes. Task management is the responsibility of the Android O S the tasks you can see are not processes in the sense of the processes.. on to its last state in order to restart it when the user returns. When you see the list of running apps in apps like TaskKiller or Quick System Info many of them are not actually running they are just in a suspended state. These apps are not..
Android Emulator won't run application started from eclipse http://stackoverflow.com/questions/2793956/android-emulator-wont-run-application-started-from-eclipse is used by another emulator. aborting POSSIBLE ANSWER One solution seems to be to kill the adb.exe process in Windows Task Manager while the emulator is still running . from http vikashazrati.wordpress.com 2008 01 01 quicktip android does not.. And the same problem reoccurs a new emulator appears but the apk isn't installed. So you need to go back to Windows Task Manager and once again kill the adb.exe process. NB I find that adb.exe doesn't reappear in the Task Manager unless I restart.. back to Windows Task Manager and once again kill the adb.exe process. NB I find that adb.exe doesn't reappear in the Task Manager unless I restart Eclipse so after closing an emulator you have to restart Eclipse try Run which fails to display..
Android : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask this replace mChart.setImageBitmap download_Image graph_URL by something like mChart.setImageBitmap new DownloadImagesTask .execute graph_URL and public class DownloadImagesTask extends AsyncTask String Void Bitmap @Override protected Bitmap doInBackground.. by something like mChart.setImageBitmap new DownloadImagesTask .execute graph_URL and public class DownloadImagesTask extends AsyncTask String Void Bitmap @Override protected Bitmap doInBackground String... urls return download_Image urls.. like mChart.setImageBitmap new DownloadImagesTask .execute graph_URL and public class DownloadImagesTask extends AsyncTask String Void Bitmap @Override protected Bitmap doInBackground String... urls return download_Image urls 0 @Override protected..
Difference between Service, Async Task & Thread? http://stackoverflow.com/questions/3264383/difference-between-service-async-task-thread between Service Async Task Thread What is the difference between Service Async Task Thread. If i am not wrong all of them are used to do some stuff.. between Service Async Task Thread What is the difference between Service Async Task Thread. If i am not wrong all of them are used to do some stuff in background. So how to decide which to use and when android.. You need to know that you cannot update UI from a Thread. You need to use a Handler for this but read further. An AsyncTask is an intelligent Thread that is advised to be used. Intelligent as it can help with it's methods and there are two methods..
http://stackoverflow.com/questions/6039158/android-cancel-async-task Cancel Async Task I use an async task to upload an image and get some results. While uploading the image I see a progress dialog written.. new DialogInterface.OnCancelListener public void onCancel DialogInterface dialog myTask.cancel true finish Now as i have mentioned earlier from SDK you have to check whether the task is cancelled or not for..
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences simpler we have to serialize and de serialize the ArrayList object which has the list of tasks into string. In the addTask method of the TaskManagerApplication class we have to get the instance of the shared preference and then store the serialized.. serialize and de serialize the ArrayList object which has the list of tasks into string. In the addTask method of the TaskManagerApplication class we have to get the instance of the shared preference and then store the serialized ArrayList using.. instance of the shared preference and then store the serialized ArrayList using the putString method public void addTask Task t if null currentTasks currentTasks new ArrayList task currentTasks.add t save the task list to preference SharedPreferences..
android viewPager implementation [closed] http://stackoverflow.com/questions/7244813/android-viewpager-implementation viewPager implementation closed My Task is to make clean scroll right to another screen then press on icon and show popup I want to use ViewPager to make clean..
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