platform

name	platform
description	Android core components lifecycle, Activities, Fragments, Services, Intent system.
version	2.0.0
sasmp_version	1.3.0
bonded_agent	02-platform
bond_type	PRIMARY_BOND
atomic	true
single_responsibility	Android platform components & lifecycle
parameters	{"component":{"type":"string","enum":["activity","fragment","service","intent","permission"],"required":false},"lifecycle_state":{"type":"string","required":false}}
retry	{"max_attempts":2,"backoff":"exponential","on_failure":"return_lifecycle_diagram"}
logging	{"level":"info","include":["query","component_type","response_time"]}

Android Platform Skill

Quick Start

Activity Lifecycle

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }
    
    override fun onDestroy() {
        super.onDestroy()
        // Cleanup
    }
}

Fragment Usage

class UserFragment : Fragment() {
    private val viewModel: UserViewModel by viewModels()
    
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        viewModel.user.observe(viewLifecycleOwner) { user ->
            updateUI(user)
        }
    }
}

Key Concepts

Lifecycle Callbacks

• onCreate(): Initial setup
• onStart(): Become visible
• onResume(): Gain focus
• onPause(): Lose focus
• onStop(): Hidden
• onDestroy(): Final cleanup

Fragment Lifecycle

Similar to Activity but with:

• onAttach(): Attached to activity
• onDetach(): Detached
• Fragment manager for transactions