- How do you send results back to activity?
- How do I start my activity results?
- What is a fragment in Android?
- Is it possible activity without UI in Android?
- How do you close an activity on Android?
- How can use variable in another activity in Android?
- What is start activity for result in android?
- How do you kill an activity?
- What is broadcast receiver in android?
- What are the four essential states of an activity in Android?
- What is Requestcode in Android?
- What is onBackPressed in Android?
- What is activity life cycle?
- What is Android default activity?
- What is activity and its lifecycle in Android?
- What is Android application life cycle?
- What is an activity in Android?
- How pass Textview value from one activity to another activity in Android?
- How do I refresh my activity?
- What is the life cycle of Broadcastreceiver in Android?
- When the activity is not in focus but still visible on the screen it is in?
How do you send results back to activity?
Returning values from an ActivityCreate an Intent (the result object)Set the result data (you don’t have to return a Uri – you can use the putExtra methods to set any values you want)Call setResult on your Activity, giving it the result Intent.Call finish on your Activity..
How do I start my activity results?
First you use startActivityForResult() with parameters in first Activity and if you want to send data from second Activity to first Activity then pass value using Intent with setResult() method and get that data inside onActivityResult() method in first Activity .
What is a fragment in Android?
Fragments Part of Android Jetpack. A Fragment represents a behavior or a portion of user interface in a FragmentActivity . You can combine multiple fragments in a single activity to build a multi-pane UI and reuse a fragment in multiple activities.
Is it possible activity without UI in Android?
The answer is yes it’s possible. Activities don’t have to have a UI. It’s mentioned in the documentation, e.g.: An activity is a single, focused thing that the user can do.
How do you close an activity on Android?
finish() method (quoting) : Call this when your activity is done and should be closed. you can use this. finish() if you want to close current activity.
How can use variable in another activity in Android?
3 Answers. You can declare them as static variables and then in your other class you may access them like Activity1. stringName. Then, in all the other Activities, you can access them as YourMainActivty.
What is start activity for result in android?
By the help of android startActivityForResult() method, we can send information from one activity to another and vice-versa. The android startActivityForResult method, requires a result from the second activity (activity to be invoked).
How do you kill an activity?
9 Answers. You can also add android:noHistory=”true” to your Activity tag in AndroidManifest. xml . Yes, all you need to do is call finish() in any Activity you would like to close.
What is broadcast receiver in android?
A broadcast receiver (receiver) is an Android component which allows you to register for system or application events. All registered receivers for an event are notified by the Android runtime once this event happens.
What are the four essential states of an activity in Android?
What are the four essential states of an activity?Active – if the activity is at the foreground.Paused – if the activity is at the background and still visible.Stopped – if the activity is not visible and therefore is hidden or obscured by another activity.Destroyed – when the activity process is killed or completed terminated.
What is Requestcode in Android?
The activity in the code. When the user clicks the Get A Result button, Android calls startActivityForResult(intent, MY_REQUEST_CODE). The startActivityForResult method takes an intent and a request code. … The request code identifies the return result when the result arrives.
What is onBackPressed in Android?
onBackPressed() or finish() gives different behavior than backgrounding the application. … The user can have the task moved into the background, finish() the activity explicitly, or use the default behavior (which calls finish() anyway).
What is activity life cycle?
Activity-lifecycle concepts To navigate transitions between stages of the activity lifecycle, the Activity class provides a core set of six callbacks: onCreate() , onStart() , onResume() , onPause() , onStop() , and onDestroy() . The system invokes each of these callbacks as an activity enters a new state.
What is Android default activity?
In Android, you can configure the starting activity (default activity) of your application via following “intent-filter” in “AndroidManifest. xml“. See following code snippet to configure a activity class “logoActivity” as the default activity.
What is activity and its lifecycle in Android?
An activity is the single screen in android. It is like window or frame of Java. By the help of activity, you can place all your UI components or widgets in a single screen. The 7 lifecycle method of Activity describes how activity will behave at different states.
What is Android application life cycle?
In most cases, every Android application runs in its own Linux process. This process is created for the application when some of its code needs to be run, and will remain running until it is no longer needed and the system needs to reclaim its memory for use by other applications.
What is an activity in Android?
An activity represents a single screen with a user interface just like window or frame of Java. Android activity is the subclass of ContextThemeWrapper class.
How pass Textview value from one activity to another activity in Android?
We can pass any value from one activity to another activity in android using the Intent class. We have to create the object of Intent and use putExtra() method to pass data. The data is passed in the form of key-value pair. Use the following code to pass data from one activity to another activity.
How do I refresh my activity?
Start with an intent your same activity and close the activity . Intent refresh = new Intent(this, Main. class); startActivity(refresh);//Start the same Activity finish(); //finish Activity. Reloading your whole activity may be a heavy task.
What is the life cycle of Broadcastreceiver in Android?
3 Answers. Declare broadcast receiver in manifest to achieve independent life cycle for it. Only onReceive() method is called in BroadcastReciver’s life cycle. A BroadcastReciever life cycle ends (ie stop receiving broadcast) when you unregister it.
When the activity is not in focus but still visible on the screen it is in?
When an activity is not in focus (i.e. not interacting with the user), but is still visible on the screen, it is in the paused state.