If your class is non-activity class, and creating an instance of it from the activiy, you can pass an instance of context via constructor of the later as follows: class YourNonActivityClass{ // variable to hold context private Context context; //save the context recievied via constructor in a local variable public YourNonActivityClass(Context context){ this.context=context; } } … Read more
It is better to set private mode for the file. App needs to be signed with same set of certificates to share this file. Set sharedUserId in both apps to be same. <manifest xmlns:android=”http://schemas.android.com/apk/res/android” package=”com.example.hello” android:versionCode=”1″ android:versionName=”1.0″ android:sharedUserId=”com.example”> …. Get Context from other package: mContext = context.createPackageContext( “com.example.otherapp”, Context.MODE_PRIVATE); mPrefs = mContext.getSharedPreferences(“sameFileNameHere”, Activity.MODE_PRIVATE); Get items … Read more
An Activity inherits a Context. AlertDialog.Builder specifies a Context argument because it can then be used by ANY class that is a subclass of Context, including an Activity, ListActivity, Service, … (There is a common coding idiom behind this – you can learn more about it by reading Item I8 (on Interfaces and Abstract classes) … Read more
You need to do following things. when you want to use AsyncTask, extend that in other class say MyCustomTask. in constructor of new class, pass Context Example public class MyCustomTask extends AsyncTask<Void, Void, Long> { private Context mContext; public MyCustomTask (Context context){ mContext = context; } //other methods like onPreExecute etc. protected void onPostExecute(Long result) … Read more
You will have to pass a context object to it. Either this if you have a reference to the class in an activty, or getApplicationContext() public class MyActivity extends Activity { public void onCreate(Bundle savedInstanceState) { RegularClass regularClass = new RegularClass(this); } } Then you can use it in the constructor (or set it to … Read more
As far as I understand: Context is the Base Object. So every Activity same as Application derives from Context. This means that every Activity and every Application IS a Context; From developer.android.com Activity java.lang.Object ↳ android.content.Context ↳ android.content.ContextWrapper ↳ android.view.ContextThemeWrapper ↳ android.app.Activity And Application java.lang.Object ↳ android.content.Context ↳ android.content.ContextWrapper ↳ android.app.Application An Application context lasts, … Read more
getApplicationContext() Application context is associated with the Applicaition and will always be the same throughout the life cycle. getBasecontext() should not be used, just use Context instead of it which is associated with the activity and could possible be destroyed when the activity is destroyed. getApplication() is available to Activity and Services only. Although in … Read more
Yes, we can access resources without using `Context` You can use: Resources.getSystem().getString(android.R.string.somecommonstuff) … everywhere in your application, even in static constants declarations. Unfortunately, it supports the system resources only. For local resources use this solution. It is not trivial, but it works.
In Java/Android a static variable or constant will not be garbage collected. It just stays there once the class that holds it is loaded via a class loader. The class loader is afaik always the same for all classes inside your app and its the one that has static references to all your classes (to … Read more
You have a few options here: Pass Context as an argument to FeedAdapter and keep it as class field Use dependency injection to inject Context when you need it. I strongly suggest reading about it. There is a great tool for that — Dagger by Square Get it from any View object. In your case … Read more