Putting it simply: As the name suggests, it's 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 and package/application).

You can get the context by invoking getApplicationContext(), getContext(), getBaseContext() or this (when in a class that extends from Context, such as the Application, Activity, Service and IntentService classes). Typical uses of context: • Creating new objects: Creating new views, adapters, listeners: TextView tv = new TextView(getContext()); ListAdapter adapter = new SimpleCursorAdapter(getApplicationContext().); • Accessing standard common resources: Services like LAYOUT_INFLATER_SERVICE, SharedPreferences: context.getSystemService(LAYOUT_INFLATER_SERVICE) getApplicationContext().getSharedPreferences(*name*, *mode*); • Accessing components implicitly: Regarding content providers, broadcasts, intent getApplicationContext().getContentResolver().query(uri.). Definition of Context:: • Context represents environment data • It provides access to things such as databases Simpler terms:: • Consider Person-X is the CEO of a start-up software company. • There is a lead architect present in the company, this lead architect does all the work in the company which involves such as database, UI etc.

Public class DBHelper extends java.lang.Object. SmartStore Database Helper Singleton class that provides. Void, reset(Context ctx). Resets all cached data and deletes the database for all users. Public static DBHelper getInstance(SQLiteDatabase db). Returns the instance of this class associated with the database. Public class DBHelper extends SQLiteOpenHelper {. Private static final String TAG = 'DBHelper'. Private static final String DB_NAME = 'xzqh.db'. Private static final int DB_VERSION = 1. Private static DBHelper helper. Private static SQLiteDatabase db. Private Context context. Private DBHelper(Context context) {.

• Now the CEO Hires a new Developer. • It is the Architect who tells the responsibility of the newly hired person based on the skills of the new person that whether he will work on Database or UI etc. Simpler terms:: • It's like access of android activity to the app's resource. • It's similar to when you visit a hotel, you want breakfast, lunch & dinner in the suitable timings, right?

• There are many other things you like during the time of stay. How do you get these things? • You ask the room-service person to bring these things for you. • Here the room-service person is the context considering you are the single activity and the hotel to be your app, finally the breakfast, lunch & dinner have to be the resources. Things that involve context are: • Loading a resource.

• Launching a new activity. • Creating views. • obtaining system service. Context is the base class for Activity, Service, Application. Etc Another way to describe this: Consider context as remote of a TV & channel's in the television are resources, services, using intents etc - - - Here remote acts as an access to get access to all the different resources into foreground.

• So, Remote has access to channels such as resources, services, using intents etc. Whoever has access to remote naturally has access to all the things such as resources, services, using intents etc Different invoking methods by which you can get context • getApplicationContext() • getContext() • getBaseContext() • or this (when in the activity class) Example: TextView TV=new TextView(this); this ->refers to the context of the current activity. ANDROID AND CONTEXT If you look through the various Android APIs, you’ll notice that many of them take an android.content.Context object as a parameter.

Aba English 3 0 Keygen Free there. You’ll also see that an Activity or a Service is usually used as a Context. This works because both of these classes extend from Context. What’s Context exactly?

Per the Android reference documentation, it’s an entity that represents various environment data. It provides access to local files, databases, class loaders associated to the environment, services including system-level services, and more. Throughout this book, and in your day-to- day coding with Android, you’ll see the Context passed around frequently. From: 'Android in Practice' book. Simple Example to understand context in android: Every boss has an assistant to look after, to do all less important and time consuming tasks. If a file or a cup of coffee is needed, assistant is on the run.

Some bosses barely know what’s going on in the office, so they ask their assistants regarding this too. They do some work themselves but for most other things they need help of their assistants.

In this scenario, Boss – is the Android application Assistant – is context Files/Cup of coffee – are resources We generally call context when we need to get information about different parts of our application like Activities, Applications etc. Torrent Systools Bkf Recovery there. Some operations(things where assistant is needed) where context is involved: Loading common resources Creating dynamic views Displaying Toast messages Launching Activities etc. Different ways of getting context: getContext() getBaseContext() getApplicationContext() this.

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