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2014/10/16 ¤W¤È 08:17:53
android Programming Glossary: lifetimeWhen 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 members without an explicit reference. Have their own lifetime. Non Static inner classes Always require an instance of the..
http://stackoverflow.com/questions/13744565/android-device-id-confusion the device over significant portions of the device lifetime but cannot be relied on. Also note that there was a bug in Froyo.. in software but generally is constant over the device lifetime. Also it can only be read if the WiFi module is switched on...
A strange behavior of Android Activities,Fragments and Intent http://stackoverflow.com/questions/13928591/a-strange-behavior-of-android-activities-fragments-and-intent could be the reason for this The doc says that The visible lifetime of an activity happens between a call to onStart until a corresponding..
http://stackoverflow.com/questions/1992676/i-cant-get-rid-of-this-error-message-activity-app-name-has-leaked-servicecon state Using startService overrides the default service lifetime that is managed by bindService Intent ServiceConnection int..
SecurityException: caller uid XXXX is different than the authenticator's uid http://stackoverflow.com/questions/3774282/securityexception-caller-uid-xxxx-is-different-than-the-authenticators-uid for Session expectLaunch true connected false stats 0 0 0 lifetime 0.002 addAccount accountType com.example.account requiredFeatures..
Android Long Press on Edit Text behavior http://stackoverflow.com/questions/4181309/android-long-press-on-edit-text-behavior to have a context item that they might not use in their lifetime. You can atleast have the feature in apps that are aware of..
Inflate a view in a background thread http://stackoverflow.com/questions/6691311/inflate-a-view-in-a-background-thread view assumes that this thread will be alive during View lifetime and will process all messages using its Looper . Which might..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables that is meant to be persisted across application lifetimes. Thus I consider most criticism below related to Applications.. for this. 1 The Application class provides a better lifetime guarantee for an application developer it is guaranteed to have.. for an application developer it is guaranteed to have the lifetime of the application. A singleton is not EXPLICITLY tied to the..
Android: Under what circumstances would a Dialog appearing cause onPause() to be called? http://stackoverflow.com/questions/7240916/android-under-what-circumstances-would-a-dialog-appearing-cause-onpause-to-be Android Activities document scroll down to the foreground lifetime line says An activity can frequently transition in and out of..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context
Apply custom filters to camera output http://stackoverflow.com/questions/8371055/apply-custom-filters-to-camera-output expensive operations in onPreviewFrame method beacause the lifetime of data is limited it's overwriten on the next frame. One hint..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for the states an activity can go through during its lifetime These states can be broken into 3 main groups as follows Active..
XML-driven GUIs and performance http://stackoverflow.com/questions/8760841/xml-driven-guis-and-performance true then XML files are going to be the same during the lifetime of an APK file. I guess these files specially layout ones have..
Hiding Title in a Fullscreen mode? http://stackoverflow.com/questions/991764/hiding-title-in-a-fullscreen-mode you are trying to dynamically show and hide it during the lifetime of the activity I am not sure if you can do that with the official..
When to clear the cache dir in Android? http://stackoverflow.com/questions/9942560/when-to-clear-the-cache-dir-in-android I use It depends on how vital that data is compared to the lifetime of your app. If you only need data for one session and you doubt..
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 class to be constructed. May not reference the containing class members without an explicit reference. Have their own lifetime. Non Static inner classes Always require an instance of the containing class to be constructed. Automatically have an implicit..
http://stackoverflow.com/questions/13744565/android-device-id-confusion the caveats above realistically meaning that it uniquely identifies the device over significant portions of the device lifetime but cannot be relied on. Also note that there was a bug in Froyo where many devices gave themselves the same ANDROID_ID... WifiInfo.getMacAddress . This can often be changed in software but generally is constant over the device lifetime. Also it can only be read if the WiFi module is switched on. MAC address of the BlueTooth module BluetoothAdaptor.getAddress..
A strange behavior of Android Activities,Fragments and Intent http://stackoverflow.com/questions/13928591/a-strange-behavior-of-android-activities-fragments-and-intent a2. However They are called perfectly when I am on a3. What could be the reason for this The doc says that The visible lifetime of an activity happens between a call to onStart until a corresponding call to onStop . During this time the user can see..
http://stackoverflow.com/questions/1992676/i-cant-get-rid-of-this-error-message-activity-app-name-has-leaked-servicecon first use startService . The android docs for startService state Using startService overrides the default service lifetime that is managed by bindService Intent ServiceConnection int it requires the service to remain running until stopService..
SecurityException: caller uid XXXX is different than the authenticator's uid http://stackoverflow.com/questions/3774282/securityexception-caller-uid-xxxx-is-different-than-the-authenticators-uid bailing out D AccountManagerService bind attempt failed for Session expectLaunch true connected false stats 0 0 0 lifetime 0.002 addAccount accountType com.example.account requiredFeatures null Which means that there is no authenticator registered..
Android Long Press on Edit Text behavior http://stackoverflow.com/questions/4181309/android-long-press-on-edit-text-behavior themselves and not by the system. You cannot force other apps to have a context item that they might not use in their lifetime. You can atleast have the feature in apps that are aware of your app. Create an activity that populates and handles only..
Inflate a view in a background thread http://stackoverflow.com/questions/6691311/inflate-a-view-in-a-background-thread
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables is not meant to be a solution for saving user or other information that is meant to be persisted across application lifetimes. Thus I consider most criticism below related to Applications being killed at any time etc... moot as anything that ever.. This first claim is incorrect. There are two main reasons for this. 1 The Application class provides a better lifetime guarantee for an application developer it is guaranteed to have the lifetime of the application. A singleton is not EXPLICITLY.. 1 The Application class provides a better lifetime guarantee for an application developer it is guaranteed to have the lifetime of the application. A singleton is not EXPLICITLY tied to the lifetime of the application although it is effectively . This..
Android: Under what circumstances would a Dialog appearing cause onPause() to be called? http://stackoverflow.com/questions/7240916/android-under-what-circumstances-would-a-dialog-appearing-cause-onpause-to-be appearing cause onPause to be called A snippet from the Android Activities document scroll down to the foreground lifetime line says An activity can frequently transition in and out of the foreground ”for example onPause is called when the device..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context
Apply custom filters to camera output http://stackoverflow.com/questions/8371055/apply-custom-filters-to-camera-output all you have to display it manually. And you can't do any expensive operations in onPreviewFrame method beacause the lifetime of data is limited it's overwriten on the next frame. One hint use setPreviewCallbackWithBuffer it's faster because it reuses..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for OS to reclaim memory and resources. The following diagram illustrates the states an activity can go through during its lifetime These states can be broken into 3 main groups as follows Active or Running Activities are considered active or running if..
XML-driven GUIs and performance http://stackoverflow.com/questions/8760841/xml-driven-guis-and-performance without redeploying the entire APK. If this supposition were true then XML files are going to be the same during the lifetime of an APK file. I guess these files specially layout ones have to be parsed and processed at runtime before an activity's..
Hiding Title in a Fullscreen mode? http://stackoverflow.com/questions/991764/hiding-title-in-a-fullscreen-mode is not an option of course EDIT Well if you are trying to dynamically show and hide it during the lifetime of the activity I am not sure if you can do that with the official Window Title due to the note that has been mentioned..
When to clear the cache dir in Android? http://stackoverflow.com/questions/9942560/when-to-clear-the-cache-dir-in-android directory will also clear the cache directory. Which one do I use It depends on how vital that data is compared to the lifetime of your app. If you only need data for one session and you doubt you'll ever need to use that data again then don't use..
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