What is the use of activity lifecycle?
Activity Lifecycle Concepts To navigate transitions between activity lifecycle stages, the Activity class provides a basic set of six callbacks: onCreate() , onStart() , onResume() , onPause () , onStop() , and onDestroy() . Each of these callbacks is invoked by the system when an activity enters a new state.
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What is the activity and its lifecycle learn from here?
The activity is a screen in the application’s user interface. There are a number of methods that are executed in an activity. There is a lifecycle associated with every activity and to create a bug-free Android app, we have to understand the activity lifecycle and write the code accordingly.
What is onStart?
When the activity becomes visible to the user, onStart() will be called. This calls right after onCreate() at the start of the activity for the first time. When the activity starts, first call the onCreate() method, then onStart(), and then onResume(). If the activity is in onPause() condition, that is, it is not visible to the user.
How to develop a project life cycle model?
To develop the life cycle of your project, first, define the order of each phase. Next, define the participants for each phase. Finally, establish the deliverables that signal the completion of the phase. When these three steps are complete, you will have a working model of the project lifecycle to refer to throughout the life of the project.
What is an example of the activity life cycle?
Provides the details about invoking lifecycle activity methods. In this example, we are displaying the content in logcat. You will not see any output on the emulator or device.
What is the longest phase of the project life cycle?
The intent of the execution phase of the project activity cycle is to deliver the expected results of the project. Typically, this is the longest phase of the project management lifecycle, where the most resources are applied.
Is there a fixed line in the project life cycle?
In real projects, there is no hard line dividing the stages. Activities, resources, and even goals often bleed from one stage to another. For example, the ‘Control’ phase coincides with the ‘Execution’ phase. Some activities in the ‘Initiate’ phase, such as scoping, integrate well into the ‘Execute’ phase.