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Add Example06Clicks
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‎.github/workflows/_build-examples.yml‎

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- name: Build Example05Camera
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run: ./gradlew :examples:Example05Camera:assembleDebug
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- name: Build Example06Clicks
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run: ./gradlew :examples:Example06Clicks:assembleDebug
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- name: Upload example APKs
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uses: actions/upload-artifact@v4
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with:

‎README.md‎

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Demonstrates smooth camera animations with customizable durations and completion callbacks.
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### [Example06Clicks](examples/Example06Clicks) - Map Click Listeners
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Demonstrates map click and long-click listeners with coordinate display via Toast messages.
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## Documentation
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- [Public API Compatibility](docs/PUBLIC_API.md) - Google MapView API implementation status and compatibility matrix

‎examples/Example05Camera/screenshot.gif‎

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‎examples/Example06Clicks/build.gradle.kts‎

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plugins {
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id("com.android.application")
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id("org.jetbrains.kotlin.android")
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id("org.jetbrains.kotlin.plugin.compose")
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id("com.diffplug.spotless")
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}
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android {
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namespace = "de.afarber.openmapview.example06clicks"
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compileSdk = 35
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defaultConfig {
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applicationId = "de.afarber.openmapview.example06clicks"
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minSdk = 23
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targetSdk = 35
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versionCode = 1
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versionName = "1.0"
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}
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buildTypes {
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release {
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isMinifyEnabled = false
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}
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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kotlinOptions {
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jvmTarget = "17"
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}
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buildFeatures {
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compose = true
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}
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composeOptions {
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kotlinCompilerExtensionVersion = "1.5.3"
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}
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sourceSets {
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getByName("main").java.srcDirs("src/main/kotlin")
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}
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}
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dependencies {
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implementation(project(":openmapview"))
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implementation("androidx.core:core-ktx:1.15.0")
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implementation("androidx.activity:activity-compose:1.9.3")
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implementation("androidx.compose.ui:ui:1.7.5")
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implementation("androidx.compose.material3:material3:1.3.1")
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implementation("androidx.compose.ui:ui-viewbinding:1.7.5")
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implementation("androidx.lifecycle:lifecycle-runtime-compose:2.8.7")
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}
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spotless {
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kotlin {
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target("src/**/*.kt")
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ktlint("1.3.1").editorConfigOverride(
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mapOf(
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"ktlint_function_naming_ignore_when_annotated_with" to "Composable",
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),
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)
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trimTrailingWhitespace()
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endWithNewline()
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indentWithSpaces(4)
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licenseHeaderFile(rootProject.file("spotless.license.kt"), "(package|import)")
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}
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kotlinGradle {
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target("*.kts")
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ktlint("1.3.1")
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}
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}

‎examples/Example06Clicks/screenshot.gif‎

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‎examples/Example06Clicks/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<uses-permission android:name="android.permission.INTERNET" />
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<application
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android:allowBackup="true"
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android:icon="@android:drawable/ic_dialog_map"
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android:label="Example06Clicks"
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android:supportsRtl="true"
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android:theme="@android:style/Theme.Material.Light.NoActionBar">
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<activity
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android:name=".MainActivity"
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android:exported="true">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎examples/Example06Clicks/src/main/kotlin/de/afarber/openmapview/example06clicks/MainActivity.kt‎

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/*
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* Copyright (c) 2025 Alexander Farber
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* SPDX-License-Identifier: MIT
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*
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* This file is part of the OpenMapView project (https://github.com/afarber/OpenMapView)
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*/
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package de.afarber.openmapview.example06clicks
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import android.content.Intent
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import android.net.Uri
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import android.os.Bundle
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import android.widget.Toast
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import androidx.activity.ComponentActivity
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import androidx.activity.compose.setContent
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.material3.MaterialTheme
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import androidx.compose.material3.Surface
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.platform.LocalContext
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import androidx.compose.ui.viewinterop.AndroidView
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import de.afarber.openmapview.LatLng
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import de.afarber.openmapview.OnMapClickListener
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import de.afarber.openmapview.OnMapLongClickListener
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import de.afarber.openmapview.OpenMapView
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class MainActivity : ComponentActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContent {
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MaterialTheme {
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Surface(
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modifier = Modifier.fillMaxSize(),
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color = MaterialTheme.colorScheme.background,
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) {
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MapViewScreen()
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}
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}
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}
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}
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}
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@Composable
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fun MapViewScreen() {
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val context = LocalContext.current
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val lifecycleOwner = androidx.lifecycle.compose.LocalLifecycleOwner.current
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// Show initial instruction toast
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LaunchedEffect(Unit) {
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Toast.makeText(
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context,
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"Try dragging the map around.\nTry short and long clicks on the map",
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Toast.LENGTH_LONG,
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).show()
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}
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AndroidView(
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factory = { ctx ->
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OpenMapView(ctx).apply {
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// Register lifecycle observer for proper cleanup
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lifecycleOwner.lifecycle.addObserver(this)
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setCenter(LatLng(51.4661, 7.2491)) // Bochum, Germany
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setZoom(14.0)
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// Set map click listener
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setOnMapClickListener(
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OnMapClickListener { latLng ->
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val coordString = "%.4f, %.4f".format(latLng.latitude, latLng.longitude)
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Toast.makeText(
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context,
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"Clicked at: $coordString",
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Toast.LENGTH_SHORT,
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).show()
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},
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)
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// Set map long-click listener
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setOnMapLongClickListener(
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OnMapLongClickListener { latLng ->
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val coordString = "%.4f, %.4f".format(latLng.latitude, latLng.longitude)
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Toast.makeText(
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context,
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"Long-clicked at: $coordString",
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Toast.LENGTH_SHORT,
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).show()
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},
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)
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// Set attribution click listener to open OSM copyright page
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setOnAttributionClickListener {
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val intent = Intent(Intent.ACTION_VIEW, Uri.parse("https://www.openstreetmap.org/copyright"))
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context.startActivity(intent)
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}
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}
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},
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modifier = Modifier.fillMaxSize(),
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)
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}

‎openmapview/src/main/kotlin/de/afarber/openmapview/MapController.kt‎

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zoom = zoom,
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)
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/**
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* Converts screen coordinates to geographic coordinates.
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*
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* Takes into account the current camera position, zoom level, and pan offset.
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*
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* @param screenX The X coordinate in screen pixels
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* @param screenY The Y coordinate in screen pixels
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* @return The geographic location (LatLng) at that screen position
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*/
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fun screenToLatLng(
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screenX: Float,
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screenY: Float,
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): LatLng {
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// Get center pixel coordinates at current zoom
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val (centerPixelX, centerPixelY) = Projection.latLngToPixel(center, zoom.toInt())
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// Convert screen coordinates to pixel coordinates
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// Account for view center offset and pan offset
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val pixelX = (centerPixelX + (screenX - viewWidth / 2 + panOffsetX).toDouble()).toInt()
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val pixelY = (centerPixelY + (screenY - viewHeight / 2 + panOffsetY).toDouble()).toInt()
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// Convert pixel coordinates to LatLng
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return Projection.pixelToLatLng(pixelX, pixelY, zoom.toInt())
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}
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/**
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* Moves the camera instantly to a new position.
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*

‎openmapview/src/main/kotlin/de/afarber/openmapview/OnMapClickListener.kt‎

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/*
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* Copyright (c) 2025 Alexander Farber
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* SPDX-License-Identifier: MIT
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*
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* This file is part of the OpenMapView project (https://github.com/afarber/OpenMapView)
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*/
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package de.afarber.openmapview
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/**
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* Listener interface for map click events.
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*
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* Called when the user taps on the map (not on a marker or other overlay).
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*/
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fun interface OnMapClickListener {
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/**
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* Called when the map is clicked.
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*
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* @param latLng The geographic location that was clicked
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*/
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fun onMapClick(latLng: LatLng)
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}

‎openmapview/src/main/kotlin/de/afarber/openmapview/OnMapLongClickListener.kt‎

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/*
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* Copyright (c) 2025 Alexander Farber
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* SPDX-License-Identifier: MIT
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*
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* This file is part of the OpenMapView project (https://github.com/afarber/OpenMapView)
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*/
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package de.afarber.openmapview
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/**
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* Listener interface for map long-click events.
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*
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* Called when the user long-presses on the map (not on a marker or other overlay).
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*/
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fun interface OnMapLongClickListener {
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/**
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* Called when the map is long-clicked.
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*
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* @param latLng The geographic location that was long-clicked
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*/
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fun onMapLongClick(latLng: LatLng)
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}

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