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2014/10/16 ¤W¤È 08:20:42
android Programming Glossary: objectsThis 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 it will have a reference to your Service object. Handler objects for the same thread all share a common Looper object which they..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application call to System.runFinalizersOnExit true ensures that all objects will be finalized and garbage collected when the the application.. killSafely Notify the system to finalize and collect all objects of the app on exit so that the virtual machine running the..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents share improve this question If you're just passing objects around then Parcelable was designed for this. It requires a.. them in that is in a FIFO approach . Once you have your objects implement Parcelable it's just a matter of putting them into..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android I would like to send messages in the form of JSON objects to a Django Server and parse the JSON response from the server..
Android: out of memory exception in Gallery http://stackoverflow.com/questions/3238388/android-out-of-memory-exception-in-gallery of 24.00MB 0.00MB free DEBUG dalvikvm 5221 GC freed 4558 objects 638152 bytes in 84ms DEBUG dalvikvm 5221 GC freed 17 objects.. 638152 bytes in 84ms DEBUG dalvikvm 5221 GC freed 17 objects 808 bytes in 67ms After entering the first gallery DEBUG Application.. of 24.00MB 1.00MB free DEBUG dalvikvm 5221 GC freed 357 objects 50080 bytes in 68ms DEBUG dalvikvm 5221 GC freed 353 objects..
http://stackoverflow.com/questions/3572463/what-is-context-in-android state of the application object. It lets newly created objects understand what has been going on. Typically you call it to.. the activity class . Typical uses of context Creating New objects Creating new views adapters listeners TextView tv new TextView..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android from our project in favor of lightweight task scoped objects which can easiliy be re created when you actually need them...
Android - SMS Broadcast receiver http://stackoverflow.com/questions/4117701/android-sms-broadcast-receiver 12345 thread_id 4 D dalvikvm 151 GC_EXPLICIT freed 391 objects 22552 bytes in 65ms D dalvikvm 220 GC_EXPLICIT freed 926 objects.. 22552 bytes in 65ms D dalvikvm 220 GC_EXPLICIT freed 926 objects 44840 bytes in 73ms So the SMS seems to be received by the emulator..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser define the XML structure using the RootElement and Element objects. In any case I would work with POJOs Plain Old Java Objects..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas this question The Android animation class applies to objects such as views and layouts. The canvas is just a surface for..
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences to SharedPreferences I have an ArrayList with custom objects. Each custom object contains a variety of strings and numbers... has been closed completely. I save a lot of other objects this way by using the SharedPreferences but I can't figure out..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables for the app such as caches of loaded resources pools of objects etc. It works great. I am not arguing that using Singletons..
Android Understanding Heap Sizes http://stackoverflow.com/questions/10677850/android-understanding-heap-sizes Size 6.133 MB Allocated 2.895MB Free 3.238 MB Used 47.20 # Objects 52 623. This is where I dont understand what's happening my..
Android App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running to the JNI Specification sections titled Accessing Java Objects and the following section Accessing Primitive Arrays . Finally..
What's Android ADB shell 'dumpsys' tool and it's benefits? http://stackoverflow.com/questions/11201659/whats-android-adb-shell-dumpsys-tool-and-its-benefits dirty 932 2004 6060 8996 priv dirty 512 36 1872 2420 Objects Views 0 ViewRoots 0 AppContexts 0 Activities 0 Assets 3 AssetManagers..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android dirty 2184 3596 916 6696 priv dirty 4504 5956 7456 17916 Objects Views 149 ViewRoots 4 AppContexts 13 Activities 0 Assets 4 AssetManagers..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android me links of some tutorials for sending and parsing JSON Objects. Complete Solution android json parsing share improve this..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android and you have enough memory to create Bitmaps. If creating Objects I think System.gc will be called automatically if needed but..
I have a memory leak using ListActivity in Android http://stackoverflow.com/questions/3910473/i-have-a-memory-leak-using-listactivity-in-android then close the activity the heap size both MB and # Objects balloons I'd expect ListActivity's onDestroy to take care of..
Saving nested foreign objects with ORMLite on Android http://stackoverflow.com/questions/4745652/saving-nested-foreign-objects-with-ormlite-on-android shallow level objects I have a data structure with nested Objects both of which are newly created and I would like to be able..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser In any case I would work with POJOs Plain Old Java Objects which would hold your data. Here would be the POJOs needed...
Sending pictures to a web server http://stackoverflow.com/questions/5415390/sending-pictures-to-a-web-server through HttpClient Web Service That Returns An Array of Objects With KSOAP For complex objects. Accessing a JAX WS web service..
Android Spinner databind using array list http://stackoverflow.com/questions/6562236/android-spinner-databind-using-array-list Adapter implementation which displays the ArrayList of Guy Objects. private class MyAdapter extends BaseAdapter implements SpinnerAdapter.. SpinnerAdapter The internal data the ArrayList with the Objects . private final List Guy data public MyAdapter List Guy data..
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change http://stackoverflow.com/questions/8417885/android-fragments-retaining-an-asynctask-during-screen-rotation-or-configuratio when loading UI State a NPE is thrown when looking for UI Objects. parentActivity getActivity @Override public void onAttach Activity..
http://stackoverflow.com/questions/8473561/json-object-to-listview I think this is what you needed Android Putting Custom Objects in ListView Android tutorial How to parse read JSON data into..
I dont get why this ClassCastException occurs http://stackoverflow.com/questions/8745893/i-dont-get-why-this-classcastexception-occurs Basically because Parcelable could be inherited by other Objects there is no guarantee that the Array contains only Uri objects...
How do I check if an app is a non-system app in Android? http://stackoverflow.com/questions/8784505/how-do-i-check-if-an-app-is-a-non-system-app-in-android app in Android I am getting a list of ApplicationInfo Objects with packageManager.getInstalledApplications 0 and attempting..
Android WSDL Web Service ksoap2 http://stackoverflow.com/questions/9023442/android-wsdl-web-service-ksoap2 data types that are not mapped are generated as SoapObjects. The mapping is required for both the request and the response... marshalling Marshalling uses java serialization to change Objects to stream of data to be unmarshalled on the web service. Marshal..
ReferenceTable overflow (max=512) JNI http://stackoverflow.com/questions/9372373/referencetable-overflow-max-512-jni I am referring to ... I am sure that number of Integer Objects getting created is causing the issue for my case ... as you.. issue for my case ... as you should be able to see 506 I Objects are created... And then JNI hits the bottleneck... dalvikvm..
Use Roboto font for earlier devices http://stackoverflow.com/questions/9797872/use-roboto-font-for-earlier-devices setting the font for each of my TextViews Buttons Other Objects. It seems like a big pain to do this for every object I show..
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 improve this question If IncomingHandler class is not static it will have a reference to your Service object. Handler objects for the same thread all share a common Looper object which they post messages to and read from. As messages contain target..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application just place a couple of lines 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.. quickly. public static void killApp boolean killSafely if killSafely Notify the system to finalize and collect all objects of the app on exit so that the virtual machine running the app can be killed by the system without causing issues. NOTE..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents of the class Intent android android intent android activity share improve this question If you're just passing objects around then Parcelable was designed for this. It requires a little more effort to use than using Java's native serialization.. from a given Parcel you must do this in the same order you put them in that is in a FIFO approach . Once you have your objects implement Parcelable it's just a matter of putting them into your Intents with putExtra Intent i new Intent i.putExtra name_of_extra..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android and Parsing JSON in Android In the application I am developing I would like to send messages in the form of JSON objects to a Django Server and parse the JSON response from the server and populate a custom listview. From the little JSON knowledge..
Android: out of memory exception in Gallery http://stackoverflow.com/questions/3238388/android-out-of-memory-exception-in-gallery DEBUG Application 5221 debug.memory allocated 4.00MB of 24.00MB 0.00MB free DEBUG dalvikvm 5221 GC freed 4558 objects 638152 bytes in 84ms DEBUG dalvikvm 5221 GC freed 17 objects 808 bytes in 67ms After entering the first gallery DEBUG Application.. of 24.00MB 0.00MB free DEBUG dalvikvm 5221 GC freed 4558 objects 638152 bytes in 84ms DEBUG dalvikvm 5221 GC freed 17 objects 808 bytes in 67ms After entering the first gallery DEBUG Application 5221 debug. DEBUG Application 5221 debug.heap native.. DEBUG Application 5221 debug.memory allocated 4.00MB of 24.00MB 1.00MB free DEBUG dalvikvm 5221 GC freed 357 objects 50080 bytes in 68ms DEBUG dalvikvm 5221 GC freed 353 objects 27312 bytes in 67ms After existing the first gallery DEBUG..
http://stackoverflow.com/questions/3572463/what-is-context-in-android it simply As the name suggests its the context of current state of the application object. It lets newly created objects understand what has been going on. Typically you call it to get information regarding another part of your program activity.. getContext getBaseContext or this when in the activity class . Typical uses of context Creating New objects Creating new views adapters listeners TextView tv new TextView getContext ListAdapter adapter new SimpleCursorAdapter getApplicationContext..
Singletons vs. Application Context in Android? http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android 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 lazily initialized..
Android - SMS Broadcast receiver http://stackoverflow.com/questions/4117701/android-sms-broadcast-receiver app 220 getSmsNewMessageNotificationInfo count 14 first addr 12345 thread_id 4 D dalvikvm 151 GC_EXPLICIT freed 391 objects 22552 bytes in 65ms D dalvikvm 220 GC_EXPLICIT freed 926 objects 44840 bytes in 73ms So the SMS seems to be received by.. thread_id 4 D dalvikvm 151 GC_EXPLICIT freed 391 objects 22552 bytes in 65ms D dalvikvm 220 GC_EXPLICIT freed 926 objects 44840 bytes in 73ms So the SMS seems to be received by the emulator but looks like the no intents are firing. What am I..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser with the android.sax implementation. You have first have to define the XML structure using the RootElement and Element objects. In any case I would work with POJOs Plain Old Java Objects which would hold your data. Here would be the POJOs needed...
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas How is it possible android android animation share improve this question The Android animation class applies to objects such as views and layouts. The canvas is just a surface for drawing which is either part of a View or linked to a bitmap...
Save ArrayList to SharedPreferences http://stackoverflow.com/questions/7057845/save-arraylist-to-sharedpreferences ArrayList to SharedPreferences I have an ArrayList with custom objects. Each custom object contains a variety of strings and numbers. I need the array to stick around even if the user leaves.. time however I don't need the array available after the application has been closed completely. I save a lot of other objects this way by using the SharedPreferences but I can't figure out how to save my entire array this way. Is this possible Maybe..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables tons of singletons for all the little shared data it maintains for the app such as caches of loaded resources pools of objects etc. It works great. I am not arguing that using Singletons cannot work fine or are not a legitimate alternative. I am arguing..
Android Understanding Heap Sizes http://stackoverflow.com/questions/10677850/android-understanding-heap-sizes Cause GC on my DDMS screen and the results are ID 1 Heap Size 6.133 MB Allocated 2.895MB Free 3.238 MB Used 47.20 # Objects 52 623. This is where I dont understand what's happening my emulator is set to 24MB of VM. Where is that number The actual..
Android App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running pinned reference table is I'd like to direct your attention to the JNI Specification sections titled Accessing Java Objects and the following section Accessing Primitive Arrays . Finally some snippets of your native code where you access primitive..
What's Android ADB shell 'dumpsys' tool and it's benefits? http://stackoverflow.com/questions/11201659/whats-android-adb-shell-dumpsys-tool-and-its-benefits 2891 N A 5752 free 6 2876 N A 2882 Pss 532 80 2479 3091 shared dirty 932 2004 6060 8996 priv dirty 512 36 1872 2420 Objects Views 0 ViewRoots 0 AppContexts 0 Activities 0 Assets 3 AssetManagers 3 Local Binders 2 Proxy Binders 8 Death Recipients..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android 14459 free 336 1531 N A 1867 Pss 4585 9282 11916 25783 shared dirty 2184 3596 916 6696 priv dirty 4504 5956 7456 17916 Objects Views 149 ViewRoots 4 AppContexts 13 Activities 0 Assets 4 AssetManagers 4 Local Binders 141 Proxy Binders 158 Death Recipients..
Sending and Parsing JSON in Android http://stackoverflow.com/questions/2818697/sending-and-parsing-json-in-android this purpose Also it would be great if someone could provide me links of some tutorials for sending and parsing JSON Objects. Complete Solution android json parsing share improve this question I am surprised these have not been mentioned but..
http://stackoverflow.com/questions/3117429/garbage-collector-in-android does not try to garbage collect first . Hence call System.gc and you have enough memory to create Bitmaps. If creating Objects I think System.gc will be called automatically if needed but not for creating bitmaps. It just fails. So I recommend manually..
I have a memory leak using ListActivity in Android http://stackoverflow.com/questions/3910473/i-have-a-memory-leak-using-listactivity-in-android was first opened. If it repeatedly 10 15 times open the activity then close the activity the heap size both MB and # Objects balloons I'd expect ListActivity's onDestroy to take care of itself when it gets destroyed. What am I missing with this..
Saving nested foreign objects with ORMLite on Android http://stackoverflow.com/questions/4745652/saving-nested-foreign-objects-with-ormlite-on-android on Android When working on Android does ORMLite only save shallow level objects I have a data structure with nested Objects both of which are newly created and I would like to be able to save both of them with one call to dao.create For exmaple..
How to parse XML using the SAX parser http://stackoverflow.com/questions/4827344/how-to-parse-xml-using-the-sax-parser define the XML structure using the RootElement and Element objects. In any case I would work with POJOs Plain Old Java Objects which would hold your data. Here would be the POJOs needed. Channel.java public class Channel implements Serializable private..
Sending pictures to a web server http://stackoverflow.com/questions/5415390/sending-pictures-to-a-web-server web service in android. Calling web service uploading file through HttpClient Web Service That Returns An Array of Objects With KSOAP For complex objects. Accessing a JAX WS web service from Android How to Android as a RESTful Client share improve..
Android Spinner databind using array list http://stackoverflow.com/questions/6562236/android-spinner-databind-using-array-list AdapterView parent Do nothing. This is your own Adapter implementation which displays the ArrayList of Guy Objects. private class MyAdapter extends BaseAdapter implements SpinnerAdapter The internal data the ArrayList with the Objects.. private class MyAdapter extends BaseAdapter implements SpinnerAdapter The internal data the ArrayList with the Objects . private final List Guy data public MyAdapter List Guy data this.data data Returns the Size of the ArrayList @Override..
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change http://stackoverflow.com/questions/8417885/android-fragments-retaining-an-asynctask-during-screen-rotation-or-configuratio true savedInstanceState is always null. Besides that when loading UI State a NPE is thrown when looking for UI Objects. parentActivity getActivity @Override public void onAttach Activity activity super.onAttach activity try loginSuccessfulListener..
http://stackoverflow.com/questions/8473561/json-object-to-listview tutorials In these Json object are displayed in Custom ListView I think this is what you needed Android Putting Custom Objects in ListView Android tutorial How to parse read JSON data into a Android ListView Populate Listview from JSON share improve..
I dont get why this ClassCastException occurs http://stackoverflow.com/questions/8745893/i-dont-get-why-this-classcastexception-occurs is why you have to iterate them and cast them individually. Basically because Parcelable could be inherited by other Objects there is no guarantee that the Array contains only Uri objects. However casting to a supertype would work since then type..
How do I check if an app is a non-system app in Android? http://stackoverflow.com/questions/8784505/how-do-i-check-if-an-app-is-a-non-system-app-in-android do I check if an app is a non system app in Android I am getting a list of ApplicationInfo Objects with packageManager.getInstalledApplications 0 and attempting to categorize them by whether or not they are a system application...
Android WSDL Web Service ksoap2 http://stackoverflow.com/questions/9023442/android-wsdl-web-service-ksoap2 MAPPINGS A mapping tells the ksoap what class to generate. Complex data types that are not mapped are generated as SoapObjects. The mapping is required for both the request and the response. for example the UriList above soapEnvelope.addMapping.. theNamespace UriList.class.getSimpleName UriList.class 5 Add marshalling Marshalling uses java serialization to change Objects to stream of data to be unmarshalled on the web service. Marshal floatMarshal new MarshalFloat floatMarshal.register soapEnvelope..
ReferenceTable overflow (max=512) JNI http://stackoverflow.com/questions/9372373/referencetable-overflow-max-512-jni which is approaximately 1024 X 1024 ... Here is the error trace I am referring to ... I am sure that number of Integer Objects getting created is causing the issue for my case ... as you should be able to see 506 I Objects are created... And then.. that number of Integer Objects getting created is causing the issue for my case ... as you should be able to see 506 I Objects are created... And then JNI hits the bottleneck... dalvikvm 9498 GC_CONCURRENT freed 1981K 41 free 6891K 11527K external..
Use Roboto font for earlier devices http://stackoverflow.com/questions/9797872/use-roboto-font-for-earlier-devices do this by using Typeface.createFromAsset and then manually setting the font for each of my TextViews Buttons Other Objects. It seems like a big pain to do this for every object I show on the screen though. My question is is there a better way..
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