Automated summary
This skill offers reference guidance on Android's core components — Activity and Fragment lifecycles, Services, and the Intent system — backed by short Kotlin snippets.
Strengths
- Explains Activity and Fragment lifecycle callbacks with a concrete Kotlin example
- Covers explicit and implicit Intents plus the three Service modes (started, bound, foreground)
- States key best practices: use ViewModel for state, unregister listeners, test configuration changes
- Declares validated parameters (component, lifecycle_state) that scope the answers
Limitations
- Deliberately introductory: little on coroutines, modern navigation, or Compose
- Permissions are only mentioned as a parameter option, not explored in depth
- Snippets are minimal and need adapting to a real project architecture
Reach for it when explaining or fixing Activity/Fragment lifecycle behavior, picking a Service type, or building an Intent on Android.
Skip it for advanced Compose, declarative navigation, or low-level performance questions, which it does not cover.
Security analysis
SafeThe skill contains only Android platform documentation and code snippets. It declares no tools, executes no commands, and makes no network, filesystem, or credential-related requests.
No concerns found
How this analysis is madeExamples
My Fragment registers a BroadcastReceiver in onCreateView and crashes after rotation. Show me the correct lifecycle callbacks to register and unregister it.I need background music playback that keeps running when the app is backgrounded on Android. Should I use a started, bound, or foreground Service, and why?Write Kotlin code that opens a web URL with an implicit ACTION_VIEW Intent and handles the case where no app can handle it.name: platform description: Android core components lifecycle, Activities, Fragments, Services, Intent system. version: "2.0.0" sasmp_version: "1.3.0"
Agent Binding
bonded_agent: 02-platform bond_type: PRIMARY_BOND
Skill Configuration
atomic: true single_responsibility: Android platform components & lifecycle
Parameter Validation
parameters: component: type: string enum: [activity, fragment, service, intent, permission] required: false lifecycle_state: type: string required: false
Retry Configuration
retry: max_attempts: 2 backoff: exponential on_failure: return_lifecycle_diagram
Observability
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 setuponStart(): Become visibleonResume(): Gain focusonPause(): Lose focusonStop(): HiddenonDestroy(): Final cleanup
Fragment Lifecycle
Similar to Activity but with:
onAttach(): Attached to activityonDetach(): Detached- Fragment manager for transactions
Intent System
// Explicit
startActivity(Intent(this, DetailActivity::class.java))
// Implicit
startActivity(Intent(Intent.ACTION_VIEW, Uri.parse("https://example.com")))
Services
- Started:
startService() - Bound:
bindService() - Foreground: Visible notification
Best Practices
✅ Handle lifecycle properly ✅ Use ViewModel for state ✅ Unregister listeners ✅ Test configuration changes ✅ Respect process lifecycle
Resources
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
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mkdir -p '.skill-downloads/android-platform-components-mrx3xwoo' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/android-platform-components-mrx3xwoo/download' --output '.skill-downloads/android-platform-components-mrx3xwoo/SKILL.md.part' && mv '.skill-downloads/android-platform-components-mrx3xwoo/SKILL.md.part' '.skill-downloads/android-platform-components-mrx3xwoo/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
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Claude Code
test -f '.skill-downloads/android-platform-components-mrx3xwoo/SKILL.md' && test -s '.skill-downloads/android-platform-components-mrx3xwoo/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/platform' && cp -R '.skill-downloads/android-platform-components-mrx3xwoo' '.claude/skills/platform'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/android-platform-components-mrx3xwoo'openskills read 'android-platform-components-mrx3xwoo'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
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Read .skill-downloads/android-platform-components-mrx3xwoo/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
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