android get context outside of activity
It provides Activities, Fragments, and Services access to resource files, images, themes/styles, and external directory locations.It also enables access to Android's built-in services, such as those used for layout inflation, keyboard, and finding content providers. I'm searching for a more efficient way than giving the context as a parameter to class A constructor. If you need the context of A in B, you need to pass it to B, and you can do that by passing the Activity A as parameter as others suggested. Connect and share knowledge within a single location that is structured and easy to search. Join Stack Overflow to learn, share knowledge, and build your career. Step 2 − Add the following code to src/MyApp.java Simple theme. This ... Upload File To Server - Android Example this example uploading an image from sdcard to web server. How to set ringtone in Android from Android activity? One for your application (Let’s call it the BIG one) and one for each view (let’s call it the activity context). This is a very simple and straight forward answer that actually answers the OP's question as against complicated, unclear and error-prone hack-like solution that was accepted as answer. How do you use an anchor of a TikZ circle? Thanks for contributing an answer to Stack Overflow! Contribute to ddlee/AndroidLuaActivity development by creating an account on GitHub. PNR STATUS Android Application for PHONEGAP In this tutorial you will learn about accessing the pnr status for ticket booking. That change leads to warnings in Java and errors … Android getting application context in Fragments By Ravi Tamada October 27, 2013 0 Comments. Start an Activity from a Notification in Android? For example if class A is going to have millions of instances then we would end up having millions of redundant pointer to Context while we should be able somehow to have just one somewhere and a getter function... You can use Application class(public class in android.application package),that is: Base class for those who need to maintain global application state. Where can i get it? What’s going on? How to restart an Activity in Android? Asking for help, clarification, or responding to other answers. This demo demonstrates the usage of Android Graphics API to create simple 2D Pie chart and handling of touch event on the Pie-chart. Below are four of the most common ways you may be able to access Context in an Activity. Android getting Activity from Context By Ravi Tamada October 27, 2013 0 Comments. Lecture notes competitive labor market with minimum wage. A little over two years ago, I was working on Android for Beginners; a class that takes students from zero programming to their first Android app. @Shark : The application context is only a partial context and doesn't work for some things in particular UI related operations. Ok, I will give a small example on how to do what you ask, The best and easy way to get the activity context is putting .this after the name of the Activity. 1 Reply Last reply . In requestLocationUpdates() method the 2nd argument is time in milliseconds and 3rd argument is distance in meters. 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. Can I ask why does it need to implement OnInitListener ? Context-registered receivers receive broadcasts as long as their registering context is valid. This example demonstrates how do I display context in an android textView. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Lua Native Activity for Android. @Shark : Sorry, I worded that badly. Theme images by, To get the context in the non - activity class first, we need the application class which extends, get Context in non-Activity class (Android), PNR STATUS Mobile Application for PHONEGAP, how to implement PieChart in android sample source code, Android Example with source code Upload File To Server, PhoneGap Build - Set splash-screen for Android devices. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Android: Show dialog without activity context. 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! This context is used to get the information about the environment. You can get the activity from the context by type casting the context to activity. If you write a test, remember that, you have to know wich context you have to use. Just set flag to intent when starting activity. For example: If your Activity's name is SecondActivity, its context will be SecondActivity.this How to get screen dimensions as pixels in Android. If the requirement is just to have a, Since this is a year later than the accepted answer, which already shows in detail how to do this, this shouldn't be a separate answer: The only "new" part is the last sentence, which contains a, State of the Stack: a new quarterly update on community and product, Podcast 320: Covid vaccine websites are frustrating. Activity Context. @Rakesh You get it wrong... he needs the B context in class A (which does not extend Activity). How do a transform simple object to have a concave shape. Can I simply use multiple turbojet engines to fly supersonic? How to stop EditText from gaining focus at Activity startup in Android. How to pass an object from one Activity to another in Android? But why do you need A context in Class B? You only use getApplicationContext() when you know you need a Context for something that may live longer than any other likely Context you have at your disposal. How to save an activity state using save instance state? The finished app has a bug though; if you rotate the phone, your current score will inexplicably disappear. get Context in non-Activity class (Android) To get the context in the non - activity class first we need the application class which ... PNR STATUS Mobile Application for PHONEGAP . I wonder what the difference is between this solution and the more complex accepted solution -- if there is a difference at all. Android: should I maintain a reference to the activity inside a recyclerview or is there another way? Retrieve Application Context Anywhere In Java Class. applicationContext and activity context are different, they have different lifespans and you should use it accordingly. Keeping contexts as static can cause memory leaks in Android. Court-Counter is a very straightforward app with buttons that modify a basketball score. Can you cast Call Lightning while submerged underwater? broadcast receivers), the function to retrieve it can be given a application/package is created. How to send parameters from a notification-click to an Android activity? This ISS trash deployment looks more like 2 feet than 2 inches per second, was it too fast or are these articles incorrect? If you lo o k at the source for android.content.Context, ... outside of … Texstudio focusses by default on the internal pdf viewer (windowed) when I call build and show. Do "the laws" mentioned in the U.S. Oath of Allegiance have to be constitutional? MontezooM last edited by . Intent i = new Intent(this,typeof(MainActivity)); i.SetFlags(ActivityFlags.ClearWhenTaskReset | ActivityFlags.NewTask); Android.App.Application.Context.StartActivity(i); But if that is the problem, a possibility is to keep the pointer to A as a sort of global, avariable of the Application class, as @hasanghaforian suggested. So easy isn’t it? To construct object i need have "android.content.Context". This should be the accepted answer and should get the highest vote. This is something common. static singletons can provide the same functionality in a more modular ", Toast.LENGTH_LONG).show (); Google says i need "android.app.Activity" object. Steps : 1. place an image on sdc... To implement splash screen in android Phonegap its very simple and easy because HTML5 made it easy for every developers to integrate anima... MY NAME IS ANDROID 1. As part of the course, students build a very simple one screen app called Court-Counter. This example demonstrate about How to get current foreground activity context in Android Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. One of the little-known features of developing an Android application with Android Studio is data binding. I'd suggest reading this article about context to better figure it out what context you need. ActivityManager am = (ActivityManager)context.getSystemService (Context.ACTIVITY_SERVICE); ComponentName cn = am.getRunningTasks (1).get (0).topActivity; Posted 22-Jul-18 8:00am. Let’s take this function inside activity for example (test for AirPlane Mode), Where isAirPlaneModeOn () is using the getContentResolver () which is Context.method: public class MyActivity extends Activity { ... public boolean isAirplaneModeOn () { return Settings.System.getInt (getContentResolver (), Settings.System. There are two different contexts in Android. In Activity or another Context use the getAssets().open() like in the following example: ... that an Android-Test-App has its own Context. Reply Quote 0. Activity a = //get activity from activity stack. How to pass an image from one activity another activity in Android? From B activity you create a object of class A using this constructor and passing getApplicationContext(). Hide Copy Code. You can create a constructor using parameter Context of class A then you can use this context. In most situation, way. How can i get access to it from Qt5 mobile application? The problem. To call it from an activity, simply call “this”. You can provide your own implementation by specifying its name in your 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. first constructing the singleton. A Context provides access to information about the application state. For this reason, the Activity Result APIs decouple the result callback from the place in your code where you launch the other activity. There is normally no need to subclass Application. They went home" mean in Maya Angelou's "They Went Home"? In fact, depending on what do you need the context for, you could even use the context of the Application instead. thank you very much I was stock in this problem, In order to get the context in not Activity class create the instance in the non activity class as follows.