android get application context from anywhere

Impletmented app context aware 2. So, the first solution is just to place context variable in target class. The application context can be used where you need a context whose lifecycle is separate from the current context or when you are passing a context beyond the scope of activity. Context may be an Application, a Service, an Activity, and more. Before we dive deeper into the ApplicationContext container, it's important to know about Spring beans. Typically, you call it to get information regarding another part of your program (activity and package/application). We use cookies to ensure that we give you the best experience on our website. Method 1 When your activity extends Fragment, use getActivity () to get the context of the activity. Android Context in non-activity Class – The Secret of ContextWrapper. This is one of the core topics of Android development, and hardly any developers use context completely and in the way it was designed.I originally published this article as a series of four posts on my website. But there is usually no big problem when getting resource files, so I have done some research to get the application context anywhere. From the app developer's point of view, when using the new API, the app needs to provide the list of direct share targets ahead of time, and potentially update the list of shortcuts every time the internal state of the app changes (for example, if a new contact is added in a messaging app). This article will tell you how to retrieve android app context object in any util class when you need. After all, on an iPhone, you can download apps only from the App Store, while on Android smartphones you can get apps … It should work at least on Android 4.x. public class MyContextWrapper extends ContextWrapper { public MyContextWrapper (Context base) { super (base); } public boolean isAirplaneModeOn () { return Settings.System.getInt (getContentResolver (), Settings.System.AIRPLANE_MODE_ON, 0) != 0; } } Note that nothing need to be changed in the isAirplaneModeOn () function as the class itself inherits the wrapper you’ve called from (Activity, … And sometime you need to use android application context in those classes to do something like create Toast message or create Snackbar popup. Null pointer exception while retriving app context. Added implemented class in bean with lazy-init = false 3. You may find source code here or you can use method Global.getContext () from my Xdroid library. can replace getApplicationContext(); with “this” keyword? Tap into the power of Contacts+ Pro from your Android device to easily access the contact information and insights you need to make connections on the go. Web.xml is already configured. Applies to SharedPreferences from anywhere in your App So I created a Constants class that takes a context, creates a singleton and then allows for various set/get accessors for storing values. omg thank you! NOTE: The Application Context can be used to load resources, send broadcast messages and do other system like stuff and NOT on instantiating Views ! Definition. Step 2 − Add the following code to src/MyApp.java. From anywhere Swipe up from the bottom of your screen to the top. Navigating to a destination is done using a NavController, an object that manages app navigation within a NavHost.Each NavHost has its own corresponding NavController.NavController provides a few different ways to navigate to a destination, which are further described in the sections below.. To retrieve the NavController for a fragment, activity, or view, use one of the following methods: Get the application context anywhere in Android, Programmer Sought, the best programmer technical posts sharing site. Hi, Today I want to talk about Context in Android.. As you know, whether we’re attaching a view or get an asset, – almost always there is a reference to Context.From the documentation, Context is an interface to global information about an application environment. When your android application grows, there are a lot of util classes. 1. If you are interested in reading chapter by chapter, feel free to read there. GlobalApplication.java package com.dev2qa.example.application; import... 2. BaseColumns; CalendarContract.AttendeesColumns; CalendarContract.CalendarAlertsColumns; CalendarContract.CalendarCacheColumns; CalendarContract.CalendarColumns 1. Get the application context anywhere in Android, Programmer Sought, the best programmer technical posts sharing site. The code looks like this: Now you have to declare this class in the AndroidManifest.xml in the application tag: And that’s all. These destinations are connected via actions. Android Get Application Context From Anywhere Example 1. Followed the steps. So the best method to resolve this issue is to define a custom application object ( extends android.app.Application ) and use it in your AndroidManifest.xml file like below. When we are inside an Activity, and we need the application context we can use. This context is available while the process runs, so there no leakage is possible. Without this, it is going to be tough to do much of the processing such as registering receivers, posting notification etc. Unfortunately it may affect lot of related code, we need to pass Context reference across all of dependent classes. But this method won’t be available when your Activity extends from Fragment. That means if you want to use the appContext object to initialize other class object, you can use the application context created here by below code. This site uses Akismet to reduce spam. Would love your thoughts, please comment. This app context has to be used in a web service. Other guys try to add public static method to Application class and access it from anywhere. Create The Global Application Sub Class. The graph represents all of your app's navigation … And that’s all. Well, as a best practice, we should not. If you don't like to use Reflection API at all, you may adapt this solution on your own choice. This example demonstrate about How to get current foreground activity context in Android. Now you have to declare this class in the AndroidManifest.xml in the application tag: . Depending on what you need to do with the Context, you can the Application Context instead of the Activity itself. Tap the app that you want to open. It relies on the hidden static method ActivityThread.currentApplication (). It lets newly-created objects understand what has been going on. I have wasted so much time looking for a solution to this nonsense problem of Android, that I must thank you. Android provides a ContextWrapper class that is created around an existing Context using: ContextWrapper wrapper = new ContextWrapper (context); The benefit of using a ContextWrapper is that it lets you “modify behavior without changing the original Context” Programming Tip : Worried about your incomplete/pending software project? ApplicationContextProvider.getContext (); Log while loading: public static Android.Content.Context Context { get; } member this.Context : Android.Content.Context Property Value Context Remarks. */. package app.tutorialspoint.com.sample ; import android.app.Activity ; import android.app.Application ; … Null pointer exception while retriving app context. Here is an undocumented way to get an Application (which is a Context) from anywhere in the UI thread. Make sure both your devices are connected to the same one. Navigation occurs between your app's destinations—that is, anywhere in your app to which users can navigate. Then if you want to access the current activity anywhere in your Android application, library, or plugin simply call: CrossCurrentActivity.Current.Activity and you will have the current activity. Following is the example of implementing a Context Menu in android application.. Use Above Custom Application In Android Manifest Xml File. Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.. So, should we configure all the objects of our application as Spring beans? If you continue to use this site we will assume that you are happy with it. Added implemented class in bean with lazy-init = false 3. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.. The instantiated core component can now be accessed from anywhere within the app where there’s a context available by calling PlaidApplication.coreComponent(context). In Spring, a bean is an object that the Spring container instantiates, assembles, and manages.. Now you can remotely catch up with your pending/missing programming work by accessing your programming tools such as emulators/IDE`s on high performance citrix xendesktop from CloudDesktopOnline with cheapest xendesktop cost. If you already have sub-classed Application, don’t worry as you can just copy and paste some code that I put in a readme text file in the project, or head over to my GitHub and learn more! DeleteFile(String) Some Wi-Fi networks offer different connection bands, like a 5 GHz or 2.4 GHz band. You have to create a new class called “ApplicationContextProvider” which will provide the context wherever in the application. Web.xml is already configured. But what if we are not inside an Activity and we need the application context? You can get now the application context wherever you need it by simply calling. This app context has to be used in a web service. Note: If you are using Android 3.0 +, the Context Menu won’t support any item shortcuts and item icons in the menu.. Android Context Menu Example. Thanks so much – after searching for a simple solution for this, yours was the only one that makes sense and it actually works. Android Context in non-activity Class Normally the context of Views in an Activity is the Activity itself so you may think you can just cast this Context to Activity but actually you can’t always do it, because the context can also be a ContextThemeWrapper in this case. Return a new Context object for the given application name. DeleteDatabase(String) Delete an existing private SQLiteDatabase associated with this Context's application package. Rarely do I ever reply. Well, I will explain in this tutorial how you can get the context of the application outside an Activity. /* If you has other classes that need context object to initialize when application is created, you can use the appContext here to process. And now we can access static application context from anywhere. You can get now the application context wherever you need it by simply calling. That means it is the same for every different object of the “GlobalApplication” class. My mission for this article is to help you master Android Context. Use getApplicationContext () if you need application-level context, which is not tight to any views/activities (for instance, in BroadcastReceiver or Service) Do not use getBaseContext () . after one frustrating day of trying different solution your’s has finally worked. Impletmented app context aware 2. The apps that run on iPhones are more strictly controlled by Apple. Android Get Application Context From Anywhere Example, android:name="com.dev2qa.example.application.GlobalApplication". A navigation graph is a resource file that contains all of your destinations and actions. Again, find a great explanation why here. No, it can be used globally, because it’s public. The static modifier only assures, that the object is a “class” Parameter. If your app uses dates, times, numbers, currencies or other locale-dependent parameters, use the Android system to provide correct locale-specific formats. Using Java and Formatters. Context reference is much needed everywhere in the application. Let’s take an example, we want to use Stetho in our app, following the documentation, it needs to be initialized with the app context, so we need to create an application if we don’t have one : class MainApplication : Application() { override fun onCreate(){ super .onCreate() Stetho.initializeWithDefaults( this ) } } it's the context of current state of the application/object. Context context = GlobalApplication.getAppContext(). Followed the steps. Note: For the best experience, we recommend making sure your Android device and PC are on the same Wi-Fi network and band. But there is usually no big problem when getting resource files, so I have done some research to get the application context anywhere. Brilliant! If your activity class extends Activity, you can get application context using getApplicatoinContext (). So the login is performed through: LoginManager.Instance.LogInWithReadPermissions(this, new List { "public_profile", "user_friends" }); Where (this) is an argument of class Android.App.Activity and it should reference to the Active/Current Activity. Log while loading: Learn how your comment data is processed. Now you can add complete MS Office suite to the same xendesktop by visiting O365CloudExperts.com powered by Apps4Rent. Android A better way to get Application Context anywhere in the app. If you need to execute a code automatically when the application starts, without adding it into your application's class code Create a class that extends Provider class StethoProvider : Provider () { override fun provide () { val application = ApplicationProvider .application // if you need the application context Stetho .initializeWithDefaults(application) } } Make use of WeakReference if you need to … Android A better way to get Application Context anywhere in the app Context reference is much needed everywhere in the application. Can yo explain this part please? And if you pass the context object as input parameter to every util class, you will find that it is impossible and complex. If you get All Apps, tap it. Then you can use below code to get this android app context object anywhere in your java util class and use it when you need. Because this object is a static object, so it can be used globally. Without this, it is going to be tough to do much of the processing such as registering receivers, posting notification etc. Contacts+ Pro lets you: * Import and sync contact information with up to 5 sync-source accounts so you can stay focused on relationships from anywhere. One of most frustrating issues I had to figure out when I’ve started to develop for Android was the Context. DatabaseList() Returns an array of strings naming the private databases associated with this Context's application package. I am tempted to put your solution on stackoverflow, but it will probably get flagged as a duplicate of some non-answer :-(. Example Use: If you have to create a singleton object for your application and that object needs a context, always pass the application context. AndroidManifest.xml