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2014/10/16 ¤W¤È 08:11:15
android Programming Glossary: collectorAndroid : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask pointer to the underlying activity causing the garbage collector to hold the whole activity in memory until the task is finished...
http://stackoverflow.com/questions/3117429/garbage-collector-in-android collector in Android I've seem many Android answers that suggest calling.. seem many Android answers that suggest calling the garbage collector in some situations. Is it a good practice to request the garbage.. situations. Is it a good practice to request the garbage collector in Android before doing a memory hungry operation If not should..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget layout are not properly deallocated by the garbage collector because they have crossed references to their activity. After..
Technical details of Android Garbage Collector http://stackoverflow.com/questions/4818869/technical-details-of-android-garbage-collector on the various mechanisms. In specific e.g. which garbage collector type does Android use Google Groups Discussion suggests that.. might still see a performance boost if the Dalvik garbage collector runs on the second core. The system will arrange for this automatically... questions the Dalvik VM indeed does use a tracing garbage collector using a Mark and Sweep approach. According to The Dalvik Virtual..
Android - What's the best way to share data between activities? http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities of WeakReferences Same idea but allowing the garbage collector to removed unreferenced objects e.g. when the user quits the..
Bitmap, Bitmap.recycle(), WeakReferences, and Garbage Collection http://stackoverflow.com/questions/4959485/bitmap-bitmap-recycle-weakreferences-and-garbage-collection hard references are kept of a bitmap object the garbage collector will automatically collect it. Now if I understand correctly.. Bitamp.recycle isn't required to be called as the garbage collector will clean up bitmaps on its own eventually as long as there..
What do GC_FOR_MALLOC, GC_EXPLICIT, and other GC_* mean in Android Logcat? http://stackoverflow.com/questions/4976566/what-do-gc-for-malloc-gc-explicit-and-other-gc-mean-in-android-logcat are being created. GC_EXPLICIT means that the garbage collector has been explicitly asked to collect instead of being triggered..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory enough free memory in the Java heap and the garbage collector decides to do nothing as a consequence unreachable ByteBuffer..
Static references are cleared--does Android unload classes at runtime if unused? http://stackoverflow.com/questions/5105097/static-references-are-cleared-does-android-unload-classes-at-runtime-if-unused level seems to actually have been cleared by the garbage collector. Maybe I'm jumping to conclusions here but could this be because.. here but could this be because the Android garbage collector or class loading mechanism can actually unload classes when..
Android: Issue with newView and bindView in custom SimpleCursorAdapter http://stackoverflow.com/questions/5183813/android-issue-with-newview-and-bindview-in-custom-simplecursoradapter you re use you also save GC run time since the garbage collector doesn't have to collect that specific list item . You can also..
Good way of getting the user's location in Android http://stackoverflow.com/questions/6181704/good-way-of-getting-the-users-location-in-android if l null l.quit Log.i LocationCollector Stopping collector due to timeout MAX_POLLING_TIME Looper.loop t.cancel locationManager.removeUpdates..
When exactly is it leak safe to use (anonymous) inner classes? http://stackoverflow.com/questions/10864853/when-exactly-is-it-leak-safe-to-use-anonymous-inner-classes on whether it thinks they are being used. The Garbage Collector is pretty smart but not flawless. It can only determine if something..
Android: OutofMemoryError: bitmap size exceeds VM budget with no reason I can see http://stackoverflow.com/questions/3037027/android-outofmemoryerror-bitmap-size-exceeds-vm-budget-with-no-reason-i-can-se you free your memory that images are collected by Garbage Collector after you don't need them any more. Garbage Collector works.. Collector after you don't need them any more. Garbage Collector works on it's own schedule. That's why you should call Bitmap.recycle..
Any way to run shell commands on android programmatically? http://stackoverflow.com/questions/3350283/any-way-to-run-shell-commands-on-android-programmatically linux share improve this question Check out Log Collector as an example. Here is the relevant file . The key is here ArrayList..
http://stackoverflow.com/questions/3508831/how-can-i-debug-a-seemingly-hardware-dependent-issue-with-my-android-app-without add logging and then I asked users to submit logs via Log Collector . Each time a user tried to send the log there were four attempts..
Technical details of Android Garbage Collector http://stackoverflow.com/questions/4818869/technical-details-of-android-garbage-collector details of Android Garbage Collector As I'm doing a research on commonalities differences of various..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context phone or leave the app etc.. Which apparently the Garbage Collector GC doesn't catch and therefor uses too much memory.. But can..
Causing OutOfMemoryError in Frame by Frame Animation in Android http://stackoverflow.com/questions/8692328/causing-outofmemoryerror-in-frame-by-frame-animation-in-android and found that i need to explicitly call the Garbage Collector using System.gc method. I have done that but still i am getting..
Android : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask that big because this will result in the task having a implicit pointer to the underlying activity causing the garbage collector to hold the whole activity in memory until the task is finished. If the user moves to another screen of your app while the..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android collector in Android I've seem many Android answers that suggest calling the garbage collector in some situations. Is it a good practice.. collector in Android I've seem many Android answers that suggest calling the garbage collector in some situations. Is it a good practice to request the garbage collector in Android before doing a memory hungry operation.. answers that suggest calling the garbage collector in some situations. Is it a good practice to request the garbage collector in Android before doing a memory hungry operation If not should I only call it if I get an OutOfMemory error Are there other..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget VM memory available for bitmaps. Bitmaps on the previous Activity layout are not properly deallocated by the garbage collector because they have crossed references to their activity. After many experiments I found a quite good solution for this problem...
Technical details of Android Garbage Collector http://stackoverflow.com/questions/4818869/technical-details-of-android-garbage-collector such I'm interested in more detailed technical information on the various mechanisms. In specific e.g. which garbage collector type does Android use Google Groups Discussion suggests that it is using tracing mechanism but I'd appreciate a more official.. example with two active cores a single threaded application might still see a performance boost if the Dalvik garbage collector runs on the second core. The system will arrange for this automatically. As before I'd rather find a source with more technical.. 3.0 share improve this question To answer one of your questions the Dalvik VM indeed does use a tracing garbage collector using a Mark and Sweep approach. According to The Dalvik Virtual Machine Architecture The current strategy in the Dalvik..
Android - What's the best way to share data between activities? http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities From the launched activity String data DataHolder.getData HashMap of WeakReferences Same idea but allowing the garbage collector to removed unreferenced objects e.g. when the user quits the activity public class DataHolder Map String WeakReference Object..
Bitmap, Bitmap.recycle(), WeakReferences, and Garbage Collection http://stackoverflow.com/questions/4959485/bitmap-bitmap-recycle-weakreferences-and-garbage-collection as WeakReferences in order to avoid memory leaks. When no more hard references are kept of a bitmap object the garbage collector will automatically collect it. Now if I understand correctly the method Bitmap.recycle must always be called to free a Bitmap... bitmap weak references share improve this question Bitamp.recycle isn't required to be called as the garbage collector will clean up bitmaps on its own eventually as long as there are no references . Bitmaps in Android are created in native..
What do GC_FOR_MALLOC, GC_EXPLICIT, and other GC_* mean in Android Logcat? http://stackoverflow.com/questions/4976566/what-do-gc-for-malloc-gc-explicit-and-other-gc-mean-in-android-logcat to perform an allocation. Might be triggered when new objects are being created. GC_EXPLICIT means that the garbage collector has been explicitly asked to collect instead of being triggered by high water marks in the heap. Happens all over the place..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory it's because it hasn't yet In your situation there is apparently enough free memory in the Java heap and the garbage collector decides to do nothing as a consequence unreachable ByteBuffer instances are not collected yet their finalizer is not run..
Static references are cleared--does Android unload classes at runtime if unused? http://stackoverflow.com/questions/5105097/static-references-are-cleared-does-android-unload-classes-at-runtime-if-unused problem instead the static singleton reference hold on class level seems to actually have been cleared by the garbage collector. Maybe I'm jumping to conclusions here but could this be because the Android garbage collector or class loading mechanism.. cleared by the garbage collector. Maybe I'm jumping to conclusions here but could this be because the Android garbage collector or class loading mechanism can actually unload classes when memory gets scarce in which case the only reference to the singleton..
Android: Issue with newView and bindView in custom SimpleCursorAdapter http://stackoverflow.com/questions/5183813/android-issue-with-newview-and-bindview-in-custom-simplecursoradapter quite time consuming operation. For each and every convertView you re use you also save GC run time since the garbage collector doesn't have to collect that specific list item . You can also create a view collection class the ViewHolder class in the..
Good way of getting the user's location in Android http://stackoverflow.com/questions/6181704/good-way-of-getting-the-users-location-in-android new TimerTask @Override public void run Looper l getLooper if l null l.quit Log.i LocationCollector Stopping collector due to timeout MAX_POLLING_TIME Looper.loop t.cancel locationManager.removeUpdates locationListener setLooper null if getLocationQuality..
When exactly is it leak safe to use (anonymous) inner classes? http://stackoverflow.com/questions/10864853/when-exactly-is-it-leak-safe-to-use-anonymous-inner-classes Collection is automatic but tries to remove objects based on whether it thinks they are being used. The Garbage Collector is pretty smart but not flawless. It can only determine if something is being used by whether or not there is an active..
Android: OutofMemoryError: bitmap size exceeds VM budget with no reason I can see http://stackoverflow.com/questions/3037027/android-outofmemoryerror-bitmap-size-exceeds-vm-budget-with-no-reason-i-can-se to track these memory issues. You just need to be sure that you free your memory that images are collected by Garbage Collector after you don't need them any more. Garbage Collector works on it's own schedule. That's why you should call Bitmap.recycle.. that you free your memory that images are collected by Garbage Collector after you don't need them any more. Garbage Collector works on it's own schedule. That's why you should call Bitmap.recycle method on bitmaps that you don't need any more. This..
Any way to run shell commands on android programmatically? http://stackoverflow.com/questions/3350283/any-way-to-run-shell-commands-on-android-programmatically and then access the data on my UI Specifically top . android linux share improve this question Check out Log Collector as an example. Here is the relevant file . The key is here ArrayList String commandLine new ArrayList String commandLine.add..
http://stackoverflow.com/questions/3508831/how-can-i-debug-a-seemingly-hardware-dependent-issue-with-my-android-app-without to get enough data to diagnose the problem I first tried to add logging and then I asked users to submit logs via Log Collector . Each time a user tried to send the log there were four attempts it was truncated and I did not get any useful data. I..
Technical details of Android Garbage Collector http://stackoverflow.com/questions/4818869/technical-details-of-android-garbage-collector details of Android Garbage Collector As I'm doing a research on commonalities differences of various mobile platforms one of the aspects under investigation..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context that is being destroyed each time the user tilts the phone or leave the app etc.. Which apparently the Garbage Collector GC doesn't catch and therefor uses too much memory.. But can anyone please come up with some really good coding examples..
Causing OutOfMemoryError in Frame by Frame Animation in Android http://stackoverflow.com/questions/8692328/causing-outofmemoryerror-in-frame-by-frame-animation-in-android 10MB. The size of each image is 320x480 in pixels. I try googling and found that i need to explicitly call the Garbage Collector using System.gc method. I have done that but still i am getting some time error of memory. Can anyone please kindly help..
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