2014/10/16 上午 08:21:39
android Programming Glossary: providesAndroid - what's the difference between the various methods to get a Context? http://stackoverflow.com/questions/1026973/android-whats-the-difference-between-the-various-methods-to-get-a-context blog was written mostly to help address memory leaks but provides some good information about contexts as well In a regular Android..
http://stackoverflow.com/questions/1939318/augmented-reality-framework Toolkit There is also a toolkit named NyARToolkit that provides a library for such a thing. Tutorial DevX Article by Chris Haseman..
Using ZXing to create an android barcode scanning app http://stackoverflow.com/questions/2050263/using-zxing-to-create-an-android-barcode-scanning-app zxing share improve this question The ZXing project provides a standalone barcode reader application which &mdash via Android's..
How do I get the SharedPreferences from a PreferenceActivity in Android? http://stackoverflow.com/questions/2614719/how-do-i-get-the-sharedpreferences-from-a-preferenceactivity-in-android application or activity. For supporting this Android provides a simple set of APIs. Preferences are typically name value pairs...
custom listview adapter getView method being called multiple times, and in no coherent order http://stackoverflow.com/questions/2618272/custom-listview-adapter-getview-method-being-called-multiple-times-and-in-no-co at layout time to know how big it should be. This is what provides ListView with the convertViews you see passed to getView even..
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file InputSource aUrl.openStream Our NavigationSaxHandler now provides the parsed data to us. navigationDataSet navSax2Handler.getParsedData..
Change title bar text in Android http://stackoverflow.com/questions/3438276/change-title-bar-text-in-android actionBar.show Styling the Action Bar The Action bar provides you a basic and familiar looks navigation modes and other quick..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread use a Handler see the link below for more info on this it provides these background threads the ability to execute code that can..
Is it possible to add an array or object to SharedPreferences on Android http://stackoverflow.com/questions/3876680/is-it-possible-to-add-an-array-or-object-to-sharedpreferences-on-android for your application see PreferenceActivity which provides an Activity framework for you to create user preferences which..
Android - detect whether there is an Internet connection available [duplicate] http://stackoverflow.com/questions/4238921/android-detect-whether-there-is-an-internet-connection-available is connected to the Internet. Now the NetworkInfo class provides a non static method isAvailable that sounds perfect. Problem..
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 oldh super.onSizeChanged w h oldw oldh This event method provides the real dimensions of this custom view. screenW w screenH h..
Making sense of LayoutInflater http://stackoverflow.com/questions/5026926/making-sense-of-layoutinflater if attachToRoot is true or else simply an object that provides a set of LayoutParams values for root of the returned hierarchy..
getViewTypeCount and getItemViewType methods of ArrayAdapter http://stackoverflow.com/questions/5300962/getviewtypecount-and-getitemviewtype-methods-of-arrayadapter need to worry about view types. In fact BaseAdapter.java provides a default behavior for all adapters public int getItemViewType.. return 0 public int getViewTypeCount return 1 This indeed provides you with the same view type for every row. Edit to outline the..
Benefit of using Parcelable instead of serializing object http://stackoverflow.com/questions/5550670/benefit-of-using-parcelable-instead-of-serializing-object serialization of your objects. Also realize that Android provides two mechanisms that allow you to pass data to another process...
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables the Context.getApplicationContext method Activity also provides a method getApplication which has the exact same effect class.. are two main reasons for this. 1 The Application class provides a better lifetime guarantee for an application developer it.. type of contract the Android API should be offering and it provides much more flexibility to the Android system as well by minimizing..
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 up create views bind data to lists etc. This method also provides you with a Bundle containing the activity's previously frozen..
Access gmail using imap with accountmanager token http://stackoverflow.com/questions/14682093/access-gmail-using-imap-with-accountmanager-token 1L public OAuth2Provider super Google OAuth2 Provider 1.0 Provides the XOAUTH2 SASL Mechanism put SaslClientFactory.XOAUTH2 com.example.testjavamail.OAuth2SaslClientFactory.. 1L public OAuth2Provider super Google OAuth2 Provider 1.0 Provides the XOAUTH2 SASL Mechanism put SaslClientFactory.XOAUTH2 com.example.testjavamail.OAuth2SaslClientFactory..
http://stackoverflow.com/questions/1945201/android-image-caching response instanceof Bitmap Bitmap bitmap Bitmap response Provides both memory and flash rom cache shared with the browser. grr...
How to use QuickSearchBox in my Android application? http://stackoverflow.com/questions/3402525/how-to-use-quicksearchbox-in-my-android-application import java.util.ArrayList Provides search suggestions for a list of words and their definitions... AndroidManifest.xml add the following to your manifest... Provides search suggestions for words and their definitions. provider..
RESTful frameworks for Android, iOS…? http://stackoverflow.com/questions/4097686/restful-frameworks-for-android-ios caching. Haven't found much documentation other than that Provides caching as well Release Documentation is planned for early 2011..
Android ListView State List not showing default item background http://stackoverflow.com/questions/4730691/android-listview-state-list-not-showing-default-item-background The StateListDrawable docs seem to indicate that the Provides initial visibility state of the drawable the default value is..
Android Cursor with ORMLite to use in CursorAdapter http://stackoverflow.com/questions/7159816/android-cursor-with-ormlite-to-use-in-cursoradapter then get the current object. dao.getSelectStarRowMapper Provides a mapper that you can use to map the object outside of the Dao...
Android - what's the difference between the various methods to get a Context? http://stackoverflow.com/questions/1026973/android-whats-the-difference-between-the-various-methods-to-get-a-context This blog post on the official Google Android developers blog was written mostly to help address memory leaks but provides some good information about contexts as well In a regular Android application you usually have two kinds of Context Activity..
http://stackoverflow.com/questions/1939318/augmented-reality-framework
Using ZXing to create an android barcode scanning app http://stackoverflow.com/questions/2050263/using-zxing-to-create-an-android-barcode-scanning-app help is greatly appreciated. android barcode barcode scanner zxing share improve this question The ZXing project provides a standalone barcode reader application which &mdash via Android's intent mechanism &mdash can be called by other applications..
How do I get the SharedPreferences from a PreferenceActivity in Android? http://stackoverflow.com/questions/2614719/how-do-i-get-the-sharedpreferences-from-a-preferenceactivity-in-android may provide a way to capture user preferences for a specific application or activity. For supporting this Android provides a simple set of APIs. Preferences are typically name value pairs. They can be stored as �Shared Preferences across various..
custom listview adapter getView method being called multiple times, and in no coherent order http://stackoverflow.com/questions/2618272/custom-listview-adapter-getview-method-being-called-multiple-times-and-in-no-co
How to draw a path on a map using kml file? http://stackoverflow.com/questions/3109158/how-to-draw-a-path-on-a-map-using-kml-file navSax2Handler Parse the xml data from our URL. xr.parse new InputSource aUrl.openStream Our NavigationSaxHandler now provides the parsed data to us. navigationDataSet navSax2Handler.getParsedData Set the result to be displayed in our GUI. Log.d..
Change title bar text in Android http://stackoverflow.com/questions/3438276/change-title-bar-text-in-android .getColor R.color.title_bar_gray actionBar.setTitle heading actionBar.show Styling the Action Bar The Action bar provides you a basic and familiar looks navigation modes and other quick actions perform. But it doesn't means it looks same in every..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread what the runOnUiThread is for. Actually you're supposed to use a Handler see the link below for more info on this it provides these background threads the ability to execute code that can modify the UI. They do this by putting the UI modifying code..
Is it possible to add an array or object to SharedPreferences on Android http://stackoverflow.com/questions/3876680/is-it-possible-to-add-an-array-or-object-to-sharedpreferences-on-android a user has chosen. If you're interested in creating user preferences for your application see PreferenceActivity which provides an Activity framework for you to create user preferences which will be automatically persisted using shared preferences..
Android - detect whether there is an Internet connection available [duplicate] http://stackoverflow.com/questions/4238921/android-detect-whether-there-is-an-internet-connection-available never timeouts I need to detect whether the Android device is connected to the Internet. Now the NetworkInfo class provides a non static method isAvailable that sounds perfect. Problem is that NetworkInfo ni new NetworkInfo if ni.isAvailable do..
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 @Override public void onSizeChanged int w int h int oldw int oldh super.onSizeChanged w h oldw oldh This event method provides the real dimensions of this custom view. screenW w screenH h bgr Bitmap.createScaledBitmap bgr w h true Scale background..
Making sense of LayoutInflater http://stackoverflow.com/questions/5026926/making-sense-of-layoutinflater root Optional view to be the parent of the generated hierarchy if attachToRoot is true or else simply an object that provides a set of LayoutParams values for root of the returned hierarchy if attachToRoot is false. attachToRoot Whether the inflated..
getViewTypeCount and getItemViewType methods of ArrayAdapter http://stackoverflow.com/questions/5300962/getviewtypecount-and-getitemviewtype-methods-of-arrayadapter If every row in your list has the same layout you don't need to worry about view types. In fact BaseAdapter.java provides a default behavior for all adapters public int getItemViewType int position return 0 public int getViewTypeCount return.. for all adapters public int getItemViewType int position return 0 public int getViewTypeCount return 1 This indeed provides you with the same view type for every row. Edit to outline the general flow You bind data to your AdapterView using an adapter...
Benefit of using Parcelable instead of serializing object http://stackoverflow.com/questions/5550670/benefit-of-using-parcelable-instead-of-serializing-object members of your class but in the end you get a much faster serialization of your objects. Also realize that Android provides two mechanisms that allow you to pass data to another process. The first is to pass a bundle to an activity using an intent..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables entire application. You can access it from any context using the Context.getApplicationContext method Activity also provides a method getApplication which has the exact same effect class MyApp extends Application private String myState public String.. than making a singleton... 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.. application developer but I would argue this is exactly the type of contract the Android API should be offering and it provides much more flexibility to the Android system as well by minimizing the lifetime of associated data. 2 The Application class..
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 This is where you should do all of your normal static set up create views bind data to lists etc. This method also provides you with a Bundle containing the activity's previously frozen state if there was one. Always followed by onStart . onRestart..
Access gmail using imap with accountmanager token http://stackoverflow.com/questions/14682093/access-gmail-using-imap-with-accountmanager-token extends Provider private static final long serialVersionUID 1L public OAuth2Provider super Google OAuth2 Provider 1.0 Provides the XOAUTH2 SASL Mechanism put SaslClientFactory.XOAUTH2 com.example.testjavamail.OAuth2SaslClientFactory As I said in.. extends Provider private static final long serialVersionUID 1L public OAuth2Provider super Google OAuth2 Provider 1.0 Provides the XOAUTH2 SASL Mechanism put SaslClientFactory.XOAUTH2 com.example.testjavamail.OAuth2SaslClientFactory public static..
http://stackoverflow.com/questions/1945201/android-image-caching true Object response connection.getContent if response instanceof Bitmap Bitmap bitmap Bitmap response Provides both memory and flash rom cache shared with the browser. grr. I wish somebody had told ME that before i wrote my own cache..
How to use QuickSearchBox in my Android application? http://stackoverflow.com/questions/3402525/how-to-use-quicksearchbox-in-my-android-application android.util.Log import com.myapp.android.MyApp import com.myapp.android.model.Location import java.util.ArrayList Provides search suggestions for a list of words and their definitions. public class LocationProvider extends ContentProvider public.. String ArrayList Location getmDict return mDict AndroidManifest.xml add the following to your manifest... Provides search suggestions for words and their definitions. provider android name .search.LocationProvider android authorities myapp_locations..
RESTful frameworks for Android, iOS…? http://stackoverflow.com/questions/4097686/restful-frameworks-for-android-ios functions. RESTProvider also handles all HTTP querying caching. Haven't found much documentation other than that Provides caching as well Release Documentation is planned for early 2011 iOS http iphoneonrails.com Lib for communication between..
Android ListView State List not showing default item background http://stackoverflow.com/questions/4730691/android-listview-state-list-not-showing-default-item-background visible true to each of the selector and item definitions. The StateListDrawable docs seem to indicate that the Provides initial visibility state of the drawable the default value is false but adding this changed nothing. EDIT2 So based on the..
Android Cursor with ORMLite to use in CursorAdapter http://stackoverflow.com/questions/7159816/android-cursor-with-ormlite-to-use-in-cursoradapter . With this you can change the cursor location for example and then get the current object. dao.getSelectStarRowMapper Provides a mapper that you can use to map the object outside of the Dao. When you are building your own query with ORMLite you use..
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