¡@
2014/10/16 ¤W¤È 08:13:57
android Programming Glossary: garbageThis Handler class should be static or leaks might occur: IncomingHandler http://stackoverflow.com/questions/11407943/this-handler-class-should-be-static-or-leaks-might-occur-incominghandler target handler in the message queue the handler cannot be garbage collected. If handler is not static your Service or Activity.. handler is not static your Service or Activity cannot be garbage collected even after being destroyed. This may lead to memory..
Android AsyncTask for Long Running Operations http://stackoverflow.com/questions/12797550/android-asynctask-for-long-running-operations it as it can no longer be displayed. The activity can't be garbage collected and that's a central mechanism for Android to preserve..
http://stackoverflow.com/questions/1945142/bitmaps-in-android the native heap and Dalvik's heap is that Dalvik's heap is garbage collected and the native one isn't. For these purposes though.. here's not much difference. When your Bitmap object gets garbage collected it's destructor will recycle the associated memory..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application true ensures that all objects will be finalized and garbage collected when the the application exits. You can also kill..
SharedPreferences.onSharedPreferenceChangeListener not being called consistently http://stackoverflow.com/questions/2542938/sharedpreferences-onsharedpreferencechangelistener-not-being-called-consistently inner class as a listener as it will become the target of garbage collection as soon as you leave the current scope. It will work.. scope. It will work at first but eventually will get garbage collected removed from the WeakHashMap and stop working. Keep..
Android : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask a implicit pointer to the underlying activity causing the garbage collector to hold the whole activity in memory until the task..
http://stackoverflow.com/questions/3117429/garbage-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.. in some situations. Is it a good practice to request the garbage collector in Android before doing a memory hungry operation.. there other things I should use before resorting to the garbage collector java android garbage collection share improve this..
http://stackoverflow.com/questions/3669325/notifydatasetchanged-example with the new List data. Uses a lot of resources and garbage collection. Create your own class derived from BaseAdapter and..
Android: Bitmap recycle() how does it work? http://stackoverflow.com/questions/3823799/android-bitmap-recycle-how-does-it-work does it get Garbage Collected or do i have to manually garbage collect it before loading another bitmap eg. myBitmap.recycle..
How to save state during orientation change in Android if the state is made of my classes? http://stackoverflow.com/questions/3915952/how-to-save-state-during-orientation-change-in-android-if-the-state-is-made-of-m object you pass or you'll prevent those objects from being garbage collected and may eventually run out of memory this is called..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget Activity layout are not properly deallocated by the garbage collector because they have crossed references to their activity...
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 HashMap of WeakReferences Same idea but allowing the garbage collector to removed unreferenced objects e.g. when the user..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context to the old Activity and the old Activity cannot be garbage collected. Some developers use custom subclasses of Application.. Activity if it holds onto something once the Activity gets garbage collected everything else flushes out too. The Application object..
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 is supposed to be no longer than that of the container. Garbage Collection and Non Static Inner Classes Garbage Collection is.. container. Garbage Collection and Non Static Inner Classes Garbage Collection is automatic but tries to remove objects based on.. based on whether it thinks they are being used. The Garbage Collector is pretty smart but not flawless. It can only determine..
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 that you free your memory that images are collected by Garbage Collector after you don't need them any more. Garbage Collector.. by Garbage Collector after you don't need them any more. Garbage Collector works on it's own schedule. That's why you should..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android collector in Android I've seem many Android answers that suggest..
Android: Bitmap recycle() how does it work? http://stackoverflow.com/questions/3823799/android-bitmap-recycle-how-does-it-work myFile2 What happens to the first myBitmap does it get Garbage Collected or do i have to manually garbage collect it before..
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..
Bitmap, Bitmap.recycle(), WeakReferences, and Garbage Collection http://stackoverflow.com/questions/4959485/bitmap-bitmap-recycle-weakreferences-and-garbage-collection Bitmap.recycle WeakReferences and Garbage Collection AFAIK on Android it is recommended to reference..
Map.clear() vs new Map : Which one will be better? http://stackoverflow.com/questions/6757868/map-clear-vs-new-map-which-one-will-be-better new HashMap String String and previously used Map will be Garbage collected. But I am not sure this will be a good way. I am working..
http://stackoverflow.com/questions/7296781/garbage-collector-in-android-is-running-but-nothing-is-shown-as-being-allocated collector in Android is running but nothing is shown as being..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context the phone or leave the app etc.. Which apparently the Garbage Collector GC doesn't catch and therefor uses too much memory....
Causing OutOfMemoryError in Frame by Frame Animation in Android http://stackoverflow.com/questions/8692328/causing-outofmemoryerror-in-frame-by-frame-animation-in-android try googling and found that i need to explicitly call the Garbage Collector using System.gc method. I have done that but still..
This Handler class should be static or leaks might occur: IncomingHandler http://stackoverflow.com/questions/11407943/this-handler-class-should-be-static-or-leaks-might-occur-incominghandler contain target Handler as long as there are messages with target handler in the message queue the handler cannot be garbage collected. If handler is not static your Service or Activity cannot be garbage collected even after being destroyed. This.. the message queue the handler cannot be garbage collected. If handler is not static your Service or Activity cannot be garbage collected even after being destroyed. This may lead to memory leaks for some time at least as long as the messages stay..
Android AsyncTask for Long Running Operations http://stackoverflow.com/questions/12797550/android-asynctask-for-long-running-operations the activity alive whereas Android would like to get rid of it as it can no longer be displayed. The activity can't be garbage collected and that's a central mechanism for Android to preserve resources on the device. It is really a very very bad idea..
http://stackoverflow.com/questions/1945142/bitmaps-in-android OS rather than by Dalvik. The only real difference between the native heap and Dalvik's heap is that Dalvik's heap is garbage collected and the native one isn't. For these purposes though here's not much difference. When your Bitmap object gets garbage.. collected and the native one isn't. For these purposes though here's not much difference. When your Bitmap object gets garbage collected it's destructor will recycle the associated memory in the native heap. Source http osdir.com ml AndroidDevelopers..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application in the onDestroy method. The call to System.runFinalizersOnExit true ensures that all objects will be finalized and garbage collected when the the application exits. You can also kill an application quickly via android.os.Process.killProcess android.os.Process.myPid..
SharedPreferences.onSharedPreferenceChangeListener not being called consistently http://stackoverflow.com/questions/2542938/sharedpreferences-onsharedpreferencechangelistener-not-being-called-consistently a WeakHashMap. This means that you cannot use an anonymous inner class as a listener as it will become the target of garbage collection as soon as you leave the current scope. It will work at first but eventually will get garbage collected removed.. the target of garbage collection as soon as you leave the current scope. It will work at first but eventually will get garbage collected removed from the WeakHashMap and stop working. Keep a reference to the listener in a field of your class and you..
Android : Loading an image from the Web with Asynctask http://stackoverflow.com/questions/3090650/android-loading-an-image-from-the-web-with-asynctask is not 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..
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 to request the garbage collector in Android before doing a memory hungry.. 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 If not should I only call it if I get an OutOfMemory error Are.. If not should I only call it if I get an OutOfMemory error Are there other things I should use before resorting to the garbage collector java android garbage collection share improve this question Yes do call System.gc . I tried to create Bitmaps..
http://stackoverflow.com/questions/3669325/notifydatasetchanged-example List add insert remove clear etc. Re create the ArrayAdapter with the new List data. Uses a lot of resources and garbage collection. Create your own class derived from BaseAdapter and ListAdapter that allows changing of the underlying List data..
Android: Bitmap recycle() how does it work? http://stackoverflow.com/questions/3823799/android-bitmap-recycle-how-does-it-work myFile2 What happens to the first myBitmap does it get Garbage Collected or do i have to manually garbage collect it before loading another bitmap eg. myBitmap.recycle Also is there a better way to load large images and display..
How to save state during orientation change in Android if the state is made of my classes? http://stackoverflow.com/questions/3915952/how-to-save-state-during-orientation-change-in-android-if-the-state-is-made-of-m
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget the 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..
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 data 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..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context reference to the ServiceConnection which has an implicit reference to the old Activity and the old Activity cannot be garbage collected. Some developers use custom subclasses of Application for their own global data which they retrieve via getApplicationContext.. by your calls on it that you don't clean up. With an Activity if it holds onto something once the Activity gets garbage collected everything else flushes out too. The Application object remains for the lifetime of your process. share improve..
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 the container's class members without the reference. Lifetime is supposed to be no longer than that of the container. Garbage Collection and Non Static Inner Classes Garbage Collection is automatic but tries to remove objects based on whether it.. Lifetime is supposed to be no longer than that of the container. Garbage Collection and Non Static Inner Classes Garbage Collection is automatic but tries to remove objects based on whether it thinks they are being used. The Garbage Collector.. Garbage 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..
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 bad tool 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.. 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 method on bitmaps that you don't need any..
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..
Android: Bitmap recycle() how does it work? http://stackoverflow.com/questions/3823799/android-bitmap-recycle-how-does-it-work if i load another bitmap like myBitmap BitmapFactory.decodeFile myFile2 What happens to the first myBitmap does it get Garbage Collected or do i have to manually garbage collect it before loading another bitmap eg. myBitmap.recycle Also is there a..
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..
Bitmap, Bitmap.recycle(), WeakReferences, and Garbage Collection http://stackoverflow.com/questions/4959485/bitmap-bitmap-recycle-weakreferences-and-garbage-collection Bitmap.recycle WeakReferences and Garbage Collection AFAIK on Android it is recommended to reference Bitmap objects as WeakReferences in order to avoid memory leaks...
Map.clear() vs new Map : Which one will be better? http://stackoverflow.com/questions/6757868/map-clear-vs-new-map-which-one-will-be-better I thought there can be a way to redefine that Map as testMap new HashMap String String and previously used Map will be Garbage collected. But I am not sure this will be a good way. I am working on mobile application. Can you please guide me java..
http://stackoverflow.com/questions/7296781/garbage-collector-in-android-is-running-but-nothing-is-shown-as-being-allocated collector in Android is running but nothing is shown as being allocated in ddms' allocation tracker In my application I'm..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context to an Activity 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..
Causing OutOfMemoryError in Frame by Frame Animation in Android http://stackoverflow.com/questions/8692328/causing-outofmemoryerror-in-frame-by-frame-animation-in-android about 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..
|