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2014/10/16 ¤W¤È 08:16:03
android Programming Glossary: instanceSaving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android MyString You'd usually use this technique to store instance values for your application selections unsaved text etc. . ..
Is it possible to have multiple styles inside a TextView? http://stackoverflow.com/questions/1529068/is-it-possible-to-have-multiple-styles-inside-a-textview styles for different pieces of text inside a TextView For instance I am setting the text as follows tv.setText line1 n line2 n..
Android - detect whether there is an Internet connection available [duplicate] http://stackoverflow.com/questions/4238921/android-detect-whether-there-is-an-internet-connection-available method of ConnectivityManager returns a NetworkInfo instance representing the first connected network interface it can find.. like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android changes won't trigger it. It's good practice to expose the instance of this class as a singleton and exposing the application variables..
How do I obtain crash-data from my Android application? http://stackoverflow.com/questions/601503/how-do-i-obtain-crash-data-from-my-android-application own device being retrieved by cable but ideally from any instance of my application running on the wild so that I can improve..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables and all parts of your application. A static variable for instance a singleton is a common Java way of achieving this. I have found.. and Android guarantees that it will exist as a single instance across your application. The way to do this is to create your.. in your manifest. Now Android will automatically create an instance of that class and make it available for your entire application...
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context it quite right As I understand it so far Each is an instance of its class which means that some programmers recommend you.. This is because the other this getting the Activity instance context points to an Activity that is being destroyed each time.. to use this getting the context of the current Activity instance and the application context will be useless wrong android context..
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 on it or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere MyApp extends android.app.Application private static MyApp instance public MyApp instance this public static Context getContext.. private static MyApp instance public MyApp instance this public static Context getContext return instance and pass.. instance this public static Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper where context..
Android App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running 9ms 5ms 06 26 17 27 42.343 E RoobrooApp 24670 Application Instance created Restarted 06 26 17 27 42.351 I ApplicationPackageManager..
About android launchmode “singleTask” http://stackoverflow.com/questions/11668144/about-android-launchmode-singletask In a senario where the Activity's above the Single Instance activites ActivityB are not removed from the Back Stack and.. Hence the warning The other modes singleTask and singleInstance are not appropriate for most applications since they result..
Camera intent not working with Samsung Galaxy S3 http://stackoverflow.com/questions/15248265/camera-intent-not-working-with-samsung-galaxy-s3 photo @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_main.. onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_main Button bt Button.. R.id.button1 bt.setOnClickListener onBTN if savedInstanceState null Bitmap Zatang String B1 savedInstanceState.getString..
how to get current week days in calender http://stackoverflow.com/questions/17766665/how-to-get-current-week-days-in-calender first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.my_calendar_view.. onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.my_calendar_view _calendar Calendar.getInstance.. R.layout.my_calendar_view _calendar Calendar.getInstance Locale.getDefault month _calendar.get Calendar.MONTH 1 year..
class not found exception in android http://stackoverflow.com/questions/18327657/class-not-found-exception-in-android DatabaseName DVDKiosk user 14Graficali Administrator Instance SQLExpress conn DriverManager.getConnection ConnUrl Statement..
How to implement a ViewPager with different Fragments / Layouts http://stackoverflow.com/questions/18413309/how-to-implement-a-viewpager-with-different-fragments-layouts pageAdapter @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_swipe.. onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_swipe pageAdapter new.. 0 return new MyFragment case 1 return SecondFragment.newInstance asdasd default return RamFragment.newInstance s ` Here is the..
Replace one Fragment with another in ViewPager http://stackoverflow.com/questions/18588944/replace-one-fragment-with-another-in-viewpager mIndicator @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.fragment_pager.. onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.fragment_pager mAdapter new MyAdapter.. facturas @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setRetainInstance true..
Access a typeface once from asset and use it as a reference http://stackoverflow.com/questions/18847531/access-a-typeface-once-from-asset-and-use-it-as-a-reference return fonts InterstateLight.ttf @return Typeface Instance with the font passed as parameter public static Typeface getTypeface.. Typeface.DEFAULT return typeFace @return Typeface Instance with the font passed as parameter public static Typeface getTypeface..
What's the difference between setWebViewClient vs. setWebChromeClient? http://stackoverflow.com/questions/2835556/whats-the-difference-between-setwebviewclient-vs-setwebchromeclient share improve this question From the source code Instance of WebViewClient that is the client callback. private volatile.. callback. private volatile WebViewClient mWebViewClient Instance of WebChromeClient for handling all chrome functions. private..
Cannot Make Static Reference to Non-Static Method http://stackoverflow.com/questions/4969171/cannot-make-static-reference-to-non-static-method why you have to understand the difference in the two. Instance non static methods work on objects that are of a particular..
http://stackoverflow.com/questions/6706645/single-instance-of-activity Instance of Activity My application has three activities say A B C ...
When/why does my Java singleton instance get destroyed? http://stackoverflow.com/questions/7503997/when-why-does-my-java-singleton-instance-get-destroyed @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState MyJavaSingleton.Instance.. onCreate Bundle savedInstanceState super.onCreate savedInstanceState MyJavaSingleton.Instance .DoStuff @Override public boolean.. super.onCreate savedInstanceState MyJavaSingleton.Instance .DoStuff @Override public boolean onTouch View arg0 MotionEvent..
http://stackoverflow.com/questions/8782637/scroll-webview-in-viewpager gets formatted like this 1. implement a custom ViewPager Instance like this import android.content.Context import android.support.v4.view.ViewPager..
Get data back from a fragment dialog - best practices? http://stackoverflow.com/questions/9776088/get-data-back-from-a-fragment-dialog-best-practices it's dismissed DialogFragment dlgFrag MyFragmentDialog.newInstance dlgFrag.show getFragmentManager dialog Thanks android share.. the Parent implemented the Callback Interface and save the Instance. @Override public void onAttach Activity activity super.onAttach..
Google Analytics in Android app - dealing with multiple activities http://stackoverflow.com/questions/3216692/google-analytics-in-android-app-dealing-with-multiple-activities protected static GoogleAnalyticsSessionManager INSTANCE protected int activityCount 0 protected Integer dispatchIntervalSecs.. getInstance Application application if INSTANCE null INSTANCE new GoogleAnalyticsSessionManager ... application.. getInstance Application application if INSTANCE null INSTANCE new GoogleAnalyticsSessionManager ... application return INSTANCE..
Android: how to code depending on the version of the API? http://stackoverflow.com/questions/4276352/android-how-to-code-depending-on-the-version-of-the-api Intent theintent public static final LabeledIntentBridge INSTANCE buildBridge private static LabeledIntentBridge buildBridge int.. call to this class is done like this LabeledIntentBridge.INSTANCE.BuildLabeledIntent URLtest theIntent android reflection share..
Programmatic Views how to set unique id's? http://stackoverflow.com/questions/6790623/programmatic-views-how-to-set-unique-ids is restarted. public class ViewId private static ViewId INSTANCE new ViewId private AtomicInteger seq private ViewId seq new.. public static ViewId getInstance return INSTANCE Note that the id might not be unique if there already are views..
Saving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android
Is it possible to have multiple styles inside a TextView? http://stackoverflow.com/questions/1529068/is-it-possible-to-have-multiple-styles-inside-a-textview styles inside a TextView Is it possible to set multiple styles for different pieces of text inside a TextView For instance I am setting the text as follows tv.setText line1 n line2 n word1 t word2 t word3 Is it possible to have a different style..
Android - detect whether there is an Internet connection available [duplicate] http://stackoverflow.com/questions/4238921/android-detect-whether-there-is-an-internet-connection-available internet share improve this question The getActiveNetworkInfo method of ConnectivityManager returns a NetworkInfo instance representing the first connected network interface it can find or null if none if the interfaces are connected. Checking.. downtime low signal captive portals content filters and the like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until you receive a valid response from the Twitter service. share..
Activity restart on rotation Android http://stackoverflow.com/questions/456211/activity-restart-on-rotation-android the Activity restarts on orientation or keyboard visibility changes won't trigger it. It's good practice to expose the instance of this class as a singleton and exposing the application variables you're initializing using getters and setters. NOTE..
How do I obtain crash-data from my Android application? http://stackoverflow.com/questions/601503/how-do-i-obtain-crash-data-from-my-android-application least from my Android application At least when working on my own device being retrieved by cable but ideally from any instance of my application running on the wild so that I can improve it and make it more solid. android crash stack trace share..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables encountering is how to save state across several Activities and all parts of your application. A static variable for instance a singleton is a common Java way of achieving this. I have found however that a more elegant way in Android is to associate.. in the broadest sense. Your application also has a context and Android guarantees that it will exist as a single instance across your application. The way to do this is to create your own subclass of android.app.Application and then specify that.. and then specify that class in the application tag in your manifest. Now Android will automatically create an instance of that class and make it available for your entire application. You can access it from any context using the Context.getApplicationContext..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context about what these two contexts are.. But I'm still not getting it quite right As I understand it so far Each is an instance of its class which means that some programmers recommend you to use this.getApplicationContext as often as possible in order.. as often as possible in order to not leak out any memory. This is because the other this getting the Activity instance context points to an Activity that is being destroyed each time the user tilts the phone or leave the app etc.. Which apparently.. really good coding examples where it would be the right thing to use this getting the context of the current Activity instance and the application context will be useless wrong android context share improve this question getApplicationContext..
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 because the activity is finishing someone called finish on it or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two scenarios with the isFinishing method. EDIT When the..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere anything wrong with the following approach public class MyApp extends android.app.Application private static MyApp instance public MyApp instance this public static Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper.. the following approach public class MyApp extends android.app.Application private static MyApp instance public MyApp instance this public static Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper where context is required.. private static MyApp instance public MyApp instance this public static Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper where context is required and not leaking of course android android context..
Android App Crashes Suddenly while running? http://stackoverflow.com/questions/11190469/android-app-crashes-suddenly-while-running freed 479K 49 free 3383K 6599K external 1057K 1076K paused 9ms 5ms 06 26 17 27 42.343 E RoobrooApp 24670 Application Instance created Restarted 06 26 17 27 42.351 I ApplicationPackageManager 24670 cscCountry is not German INS UPDATE While experimenting..
About android launchmode “singleTask” http://stackoverflow.com/questions/11668144/about-android-launchmode-singletask it again from the Recent App's list the 2nd Activity is Destroyed. In a senario where the Activity's above the Single Instance activites ActivityB are not removed from the Back Stack and another application request this Activity ActivityB it may not.. in the BackStack before he could navigate to another Task App. Hence the warning The other modes singleTask and singleInstance are not appropriate for most applications since they result in an interaction model that is likely to be unfamiliar to users..
Camera intent not working with Samsung Galaxy S3 http://stackoverflow.com/questions/15248265/camera-intent-not-working-with-samsung-galaxy-s3 ImageView findViewById R.id.imageView1 imageview.setImageBitmap photo @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_main Button bt Button findViewById R.id.button1.. imageview.setImageBitmap photo @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_main Button bt Button findViewById R.id.button1 bt.setOnClickListener onBTN if savedInstanceState.. setContentView R.layout.activity_main Button bt Button findViewById R.id.button1 bt.setOnClickListener onBTN if savedInstanceState null Bitmap Zatang String B1 savedInstanceState.getString message Toast.makeText this SavedYeah B1 Toast.LENGTH_LONG..
how to get current week days in calender http://stackoverflow.com/questions/17766665/how-to-get-current-week-days-in-calender String dateTemplate MMMM yyyy Called when the activity is first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.my_calendar_view _calendar Calendar.getInstance Locale.getDefault.. when the activity is first created. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.my_calendar_view _calendar Calendar.getInstance Locale.getDefault month _calendar.get Calendar.MONTH.. savedInstanceState super.onCreate savedInstanceState setContentView R.layout.my_calendar_view _calendar Calendar.getInstance Locale.getDefault month _calendar.get Calendar.MONTH 1 year _calendar.get Calendar.YEAR Log.d tag Calendar Instance Month..
class not found exception in android http://stackoverflow.com/questions/18327657/class-not-found-exception-in-android String ConnUrl jdbc jtds sqlserver 14GRAFICALI MSSQLSERVER2008 DatabaseName DVDKiosk user 14Graficali Administrator Instance SQLExpress conn DriverManager.getConnection ConnUrl Statement st conn.createStatement rs st.executeQuery CommandSQL while..
How to implement a ViewPager with different Fragments / Layouts http://stackoverflow.com/questions/18413309/how-to-implement-a-viewpager-with-different-fragments-layouts class SwipeActivity extends FragmentActivity MyPageAdapter pageAdapter @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_swipe pageAdapter new MyPageAdapter getSupportFragmentManager.. MyPageAdapter pageAdapter @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.activity_swipe pageAdapter new MyPageAdapter getSupportFragmentManager ViewPager pager ViewPager.. public Fragment getItem int position switch position case 0 return new MyFragment case 1 return SecondFragment.newInstance asdasd default return RamFragment.newInstance s ` Here is the code for the fragments public class MyFragment extends Fragment..
Replace one Fragment with another in ViewPager http://stackoverflow.com/questions/18588944/replace-one-fragment-with-another-in-viewpager mAdapter private ViewPager mPager private PageIndicator mIndicator @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.fragment_pager mAdapter new MyAdapter getSupportFragmentManager.. private PageIndicator mIndicator @Override protected void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setContentView R.layout.fragment_pager mAdapter new MyAdapter getSupportFragmentManager mPager ViewPager findViewById.. private ListView lista private ArrayList TuplaFacturaWS facturas @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState setRetainInstance true public View onCreateView LayoutInflater inflater ViewGroup..
Access a typeface once from asset and use it as a reference http://stackoverflow.com/questions/18847531/access-a-typeface-once-from-asset-and-use-it-as-a-reference InterstateCondMonoLgt.ttf CONTENT_FONT public String toString return fonts InterstateLight.ttf @return Typeface Instance with the font passed as parameter public static Typeface getTypeface Context context String typefaceName Typeface typeFace.. typefaceName typeFace mContentFont catch Exception ex typeFace Typeface.DEFAULT return typeFace @return Typeface Instance with the font passed as parameter public static Typeface getTypeface Context context FontType typefaceName return getTypeface..
What's the difference between setWebViewClient vs. setWebChromeClient? http://stackoverflow.com/questions/2835556/whats-the-difference-between-setwebviewclient-vs-setwebchromeclient in Android android webviewclient webchromeclient share improve this question From the source code Instance of WebViewClient that is the client callback. private volatile WebViewClient mWebViewClient Instance of WebChromeClient.. the source code Instance of WebViewClient that is the client callback. private volatile WebViewClient mWebViewClient Instance of WebChromeClient for handling all chrome functions. private volatile WebChromeClient mWebChromeClient SOME OTHER SUTFFF.........
Cannot Make Static Reference to Non-Static Method http://stackoverflow.com/questions/4969171/cannot-make-static-reference-to-non-static-method non static you cannot call from a static method. To understand why you have to understand the difference in the two. Instance non static methods work on objects that are of a particular type the class . These are created with the new like this SomeClass..
http://stackoverflow.com/questions/6706645/single-instance-of-activity Instance of Activity My application has three activities say A B C . Activity A is called from another activity through startActivityForResult..
When/why does my Java singleton instance get destroyed? http://stackoverflow.com/questions/7503997/when-why-does-my-java-singleton-instance-get-destroyed class MyJavaActivity extends Activity implements View.OnTouchListener @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState MyJavaSingleton.Instance .DoStuff @Override public boolean onTouch View arg0 MotionEvent.. Activity implements View.OnTouchListener @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState MyJavaSingleton.Instance .DoStuff @Override public boolean onTouch View arg0 MotionEvent arg1 Intent intent new Intent.. @Override public void onCreate Bundle savedInstanceState super.onCreate savedInstanceState MyJavaSingleton.Instance .DoStuff @Override public boolean onTouch View arg0 MotionEvent arg1 Intent intent new Intent MyJavaActivity.this NativeActivity.class..
http://stackoverflow.com/questions/8782637/scroll-webview-in-viewpager share improve this question don't ask me why this code gets formatted like this 1. implement a custom ViewPager Instance like this import android.content.Context import android.support.v4.view.ViewPager import android.util.AttributeSet import..
Get data back from a fragment dialog - best practices? http://stackoverflow.com/questions/9776088/get-data-back-from-a-fragment-dialog-best-practices What's a good way to get data back from this dialog once it's dismissed DialogFragment dlgFrag MyFragmentDialog.newInstance dlgFrag.show getFragmentManager dialog Thanks android share improve this question A great way to pass this kind of.. ... Then you check inside your onAttach Method if the Parent implemented the Callback Interface and save the Instance. @Override public void onAttach Activity activity super.onAttach activity try mListener OnArticleSelectedListener activity..
Google Analytics in Android app - dealing with multiple activities http://stackoverflow.com/questions/3216692/google-analytics-in-android-app-dealing-with-multiple-activities .decrementActivityCount public class GoogleAnalyticsSessionManager protected static GoogleAnalyticsSessionManager INSTANCE protected int activityCount 0 protected Integer dispatchIntervalSecs protected String apiKey protected Context context .. of GoogleAnalyticsSessionManager public static GoogleAnalyticsSessionManager getInstance Application application if INSTANCE null INSTANCE new GoogleAnalyticsSessionManager ... application return INSTANCE Only call this if you're sure an instance.. public static GoogleAnalyticsSessionManager getInstance Application application if INSTANCE null INSTANCE new GoogleAnalyticsSessionManager ... application return INSTANCE Only call this if you're sure an instance has been previously..
Android: how to code depending on the version of the API? http://stackoverflow.com/questions/4276352/android-how-to-code-depending-on-the-version-of-the-api public abstract Intent BuildLabeledIntent String URL Intent theintent public static final LabeledIntentBridge INSTANCE buildBridge private static LabeledIntentBridge buildBridge int sdk new Integer Build.VERSION.SDK .intValue if sdk 5 return.. I return the intent itself without doing nothing more. The call to this class is done like this LabeledIntentBridge.INSTANCE.BuildLabeledIntent URLtest theIntent android reflection share improve this question Follow the wrapper class pattern..
Programmatic Views how to set unique id's? http://stackoverflow.com/questions/6790623/programmatic-views-how-to-set-unique-ids the execution of your process but wil reset when your process is restarted. public class ViewId private static ViewId INSTANCE new ViewId private AtomicInteger seq private ViewId seq new AtomicInteger 0 public int getUniqueId return seq.incrementAndGet.. seq new AtomicInteger 0 public int getUniqueId return seq.incrementAndGet public static ViewId getInstance return INSTANCE Note that the id might not be unique if there already are views that have ids in the view 'graph'. You could try to start..
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