What is single top in Android?

An Activity with singleTask launchMode is allowed to have only one instance in the system (a.k.a. Singleton). If there is an existed Activity instance in the system, the whole Task hold the instance would be moved to top while Intent would be delivered through onNewIntent() method.

Which launch mode is used to open an activity in a new activity stack?

standard This is the default launch mode of an activity (If not specified). It creates a new instance of an activity in the task from which it was started. Multiple instances of the activity can be created and multiple instances can be added to the same or different tasks.

How do I close all activities on Android?

There are three solution for clear activity history.

  1. You can write finish() at the time of start new activity through intent.
  2. Write android:noHistory=”true” in all tag in Androidmanifest.
  3. write system.

What is the difference between singleTop and singleTask?

The modes fall into two groups. standard and singleTop comes in one side and singleTask and singleInstance comes in another side. The main difference between standard and singleTop is in standard, every time a new intent for standard activity, a new instance is created.

What is task affinity?

Task affinity lets you define which task an activity belongs to. By default, an activity has the same task affinity as its root activity. With task affinity, we can now separate activities into different tasks.

How many Android launch modes are there?

four types
There are four types of launch modes in Android: Standard. SingleTop. SingleTask.

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 difference between fragment and activity?

Activity is an application component that gives a user interface where the user can interact. The fragment is only part of an activity, it basically contributes its UI to that activity. Fragment is dependent on activity. It can’t exist independently.

How do I close a programmatically activity?

you can use finishAffinity(); to close all the activity.. Show activity on this post. finish() method is used to finish the activity and remove it from back stack.

What are intent flags in Android?

Use Intent Flags Intents are used to launch activities on Android. You can set flags that control the task that will contain the activity. Flags exist to create a new activity, use an existing activity, or bring an existing instance of an activity to the front.