Add logging funtionatily to the example app. (5f02ef6e) · Commits · e / os / android_frameworks_native

libs/bufferstreams/examples/app/Android.bp

+3 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,9 @@ android_app {
		kotlincflags: [
		"-opt-in=androidx.compose.material3.ExperimentalMaterial3Api",
		],
		optimize: {
		proguard_flags_files: ["proguard-rules.pro"],
		},

		resource_dirs: ["res"],

libs/bufferstreams/examples/app/java/com/android/graphics/bufferstreamsdemoapp/BufferStreamJNI.kt

+5 −5

Original line number	Diff line number	Diff line
		@@ -10,18 +10,18 @@ class BufferStreamJNI {
		* A native method that is implemented by the 'bufferstreamsdemoapp' native library, which is
		* packaged with this application.
		*/
		external fun stringFromJNI()
		external fun testBufferQueueCreation()
		external fun stringFromJNI(): String;
		external fun testBufferQueueCreation();

		companion object {
		fun companion_stringFromJNI() {
		fun companion_stringFromJNI(): String {
		val instance = BufferStreamJNI()
		instance.stringFromJNI()
		return instance.stringFromJNI()
		}

		fun companion_testBufferQueueCreation() {
		val instance = BufferStreamJNI()
		instance.testBufferQueueCreation()
		return instance.testBufferQueueCreation()
		}
		}
		}
		No newline at end of file

libs/bufferstreams/examples/app/java/com/android/graphics/bufferstreamsdemoapp/DemoScreen1.kt

+12 −10

Original line number	Diff line number	Diff line
		@@ -4,10 +4,8 @@ import androidx.compose.foundation.layout.Arrangement
		import androidx.compose.foundation.layout.Column
		import androidx.compose.foundation.layout.Row
		import androidx.compose.foundation.layout.fillMaxWidth
		import androidx.compose.foundation.layout.height
		import androidx.compose.foundation.layout.padding
		import androidx.compose.material3.Button
		import androidx.compose.material3.Card
		import androidx.compose.material3.OutlinedButton
		import androidx.compose.material3.Text
		import androidx.compose.runtime.Composable
		@@ -17,16 +15,20 @@ import androidx.compose.ui.unit.dp
		@Composable
		fun DemoScreen1(modifier: Modifier = Modifier) {
		Column(modifier = modifier, verticalArrangement = Arrangement.SpaceBetween) {
		Card(modifier = Modifier.fillMaxWidth().weight(1f, false).padding(16.dp).height(400.dp)) {
		Text("Log output", modifier = Modifier.padding(16.dp))
		}
		LogOutput.getInstance().LogOutputComposable()
		Row(modifier = Modifier.weight(1f, false).padding(16.dp)) {
		Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
		Button(
		modifier = Modifier.fillMaxWidth(),
		onClick = { BufferStreamJNI.companion_testBufferQueueCreation() }
		) { Text("Run") }
		OutlinedButton(modifier = Modifier.fillMaxWidth(), onClick = {}) { Text("Clear") }
		onClick = { BufferStreamJNI.companion_testBufferQueueCreation() }) {
		Text("Run")
		}

		OutlinedButton(
		modifier = Modifier.fillMaxWidth(),
		onClick = { LogOutput.getInstance().clearText() }) {
		Text("Clear")
		}
		}
		}
		}

libs/bufferstreams/examples/app/java/com/android/graphics/bufferstreamsdemoapp/LogOutput.kt

0 → 100644

+65 −0

Original line number	Diff line number	Diff line
		package com.android.graphics.bufferstreamsdemoapp

		import androidx.compose.foundation.layout.Column
		import androidx.compose.foundation.layout.fillMaxWidth
		import androidx.compose.foundation.layout.height
		import androidx.compose.foundation.layout.padding
		import androidx.compose.foundation.layout.size
		import androidx.compose.foundation.rememberScrollState
		import androidx.compose.foundation.verticalScroll
		import androidx.compose.material3.Card
		import androidx.compose.material3.Text
		import androidx.compose.runtime.Composable
		import androidx.compose.runtime.mutableStateListOf
		import androidx.compose.runtime.remember
		import androidx.compose.ui.Modifier
		import androidx.compose.ui.unit.dp
		import java.util.Collections

		/*
		LogOutput centralizes logging: storing, displaying, adding, and clearing log messages with
		thread safety. It is a singleton that's also accessed from C++. The private constructor will
		not allow this class to be initialized, limiting it to getInstance().
		*/
		class LogOutput private constructor() {
		val logs = Collections.synchronizedList(mutableStateListOf<String>())

		@Composable
		fun LogOutputComposable() {
		val rlogs = remember { logs }

		Card(modifier = Modifier.fillMaxWidth().padding(16.dp).height(400.dp)) {
		Column(
		modifier =
		Modifier.padding(10.dp).size(380.dp).verticalScroll(rememberScrollState())) {
		for (log in rlogs) {
		Text(log, modifier = Modifier.padding(0.dp))
		}
		}
		}
		}

		fun clearText() {
		logs.clear()
		}

		fun addLog(log: String) {
		logs.add(log)
		}

		companion object {
		@Volatile private var instance: LogOutput? = null

		@JvmStatic
		fun getInstance(): LogOutput {
		if (instance == null) {
		synchronized(this) {
		if (instance == null) {
		instance = LogOutput()
		}
		}
		}
		return instance!!
		}
		}
		}

libs/bufferstreams/examples/app/java/com/android/graphics/bufferstreamsdemoapp/MainActivity.kt

+43 −47

Original line number	Diff line number	Diff line
		@@ -31,17 +31,19 @@ import androidx.navigation.compose.composable
		import androidx.navigation.compose.currentBackStackEntryAsState
		import androidx.navigation.compose.rememberNavController
		import com.android.graphics.bufferstreamsdemoapp.ui.theme.JetpackTheme
		import java.util.*

		class MainActivity : ComponentActivity() {

		override fun onCreate(savedInstanceState: Bundle?) {
		super.onCreate(savedInstanceState)

		setContent {
		JetpackTheme {
		Surface(
		modifier = Modifier.fillMaxSize(),
		color = MaterialTheme.colorScheme.background
		) { BufferDemosApp() }
		color = MaterialTheme.colorScheme.background) {
		BufferDemosApp()
		}
		}
		}
		}
		@@ -68,28 +70,22 @@ fun BufferDemosApp() {
		// Get the name of the current screen
		val currentScreen =
		BufferDemoScreen.findByRoute(
		backStackEntry?.destination?.route ?: BufferDemoScreen.Start.route
		)
		backStackEntry?.destination?.route ?: BufferDemoScreen.Start.route)

		Scaffold(
		topBar = {
		BufferDemosAppBar(
		currentScreen = currentScreen,
		canNavigateBack = navController.previousBackStackEntry != null,
		navigateUp = { navController.navigateUp() }
		)
		}
		) {
		navigateUp = { navController.navigateUp() })
		}) {
		NavHost(
		navController = navController,
		startDestination = BufferDemoScreen.Start.route,
		modifier = Modifier.padding(10.dp)
		) {
		modifier = Modifier.padding(10.dp)) {
		composable(route = BufferDemoScreen.Start.route) {
		DemoList(
		onButtonClicked = {
		navController.navigate(it)
		},
		onButtonClicked = { navController.navigate(it) },
		)
		}
		composable(route = BufferDemoScreen.Demo1.route) {
		@@ -109,8 +105,7 @@ fun DemoList(onButtonClicked: (String) -> Unit) {
		Column(
		modifier = Modifier.fillMaxWidth(),
		horizontalAlignment = Alignment.CenterHorizontally,
		verticalArrangement = Arrangement.spacedBy(8.dp)
		) {
		verticalArrangement = Arrangement.spacedBy(8.dp)) {
		Spacer(modifier = Modifier.height(100.dp))
		Text(text = "Buffer Demos", style = MaterialTheme.typography.titleLarge)
		Spacer(modifier = Modifier.height(8.dp))
		@@ -119,11 +114,12 @@ fun DemoList(onButtonClicked: (String) -> Unit) {
		Column(
		modifier = Modifier.fillMaxWidth(),
		horizontalAlignment = Alignment.CenterHorizontally,
		verticalArrangement = Arrangement.spacedBy(16.dp)
		) {
		verticalArrangement = Arrangement.spacedBy(16.dp)) {
		for (item in BufferDemoScreen.values()) {
		if (item.route != BufferDemoScreen.Start.route)
		SelectDemoButton(name = stringResource(item.title), onClick = { onButtonClicked(item.route) })
		SelectDemoButton(
		name = stringResource(item.title),
		onClick = { onButtonClicked(item.route) })
		}
		}
		}