Android Kotlin | Skills Pool

Android Kotlin | Skills Pool

Create layout XML in res/layout/activity_xxx.xml
Create Activity class in appropriate ui/ subfolder
Use ViewBinding: ActivityXxxBinding.inflate(layoutInflater)

Register in AndroidManifest.xml:

<activity
    android:name=".ui.xxx.XxxActivity"
    android:exported="false"
    android:screenOrientation="portrait"
    android:theme="@style/Theme.NativeCamera.Fullscreen" />

Build and verify with gradlew assembleDebug

<ImageView
    android:id="@+id/btnBack"
    android:layout_width="44dp"
    android:layout_height="44dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="44dp"
    android:background="@drawable/bg_circle_button"
    android:contentDescription="Back"
    android:padding="10dp"
    android:scaleType="centerInside"
    android:src="@drawable/ic_back" />

// Before navigation with interstitial
AdManager.frequencyController.recordAction()
AdManager.showInterstitialIfReady(activity) {
    // onDismiss callback — navigate here
}

// App Open Ad with callback
AdManager.appOpenAdManager.showIfAvailable(activity) {
    // onDismiss callback
}

val videoUri = Uri.parse("android.resource://$packageName/$rawResId")
binding.videoView.setVideoURI(videoUri)
binding.videoView.setOnPreparedListener { mp ->
    mp.isLooping = true
    binding.videoView.start()
}

// For raw resources — use file descriptor, NOT URI
val afd = context.resources.openRawResourceFd(rawResId)
val retriever = MediaMetadataRetriever()
retriever.setDataSource(afd.fileDescriptor, afd.startOffset, afd.length)
val bitmap = retriever.getFrameAtTime(1_000_000)
retriever.release()
afd.close()