Add Opt in analytics

.gitignore

@@ -33,3 +33,6 @@
 # Sentry Config File
 sentry.properties
 /opencode.json
+# JVM crash and replay logs
+hs_err_pid*.log
+replay_pid*.log

app/build.gradle

@@ -59,17 +59,20 @@ android {
 	buildTypes {
 		debug {
 			applicationIdSuffix = '.debug'
+			buildConfigField "String", "SENTRY_DSN", '""'
 		}
 		release {
 			minifyEnabled true
 			shrinkResources true
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
 			signingConfig signingConfigs.release
+			buildConfigField "String", "SENTRY_DSN", "\"${System.getenv('SENTRY_DSN') ?: ''}\""
 		}
 		nightly {
 			initWith release
 			applicationIdSuffix = '.nightly'
 			signingConfig signingConfigs.release
+			buildConfigField "String", "SENTRY_DSN", "\"${System.getenv('SENTRY_DSN') ?: ''}\""
 		}
 	}
 	buildFeatures {

app/src/main/AndroidManifest.xml

@@ -1689,7 +1689,7 @@
 		</activity-alias>
 
 
-    <meta-data android:name="io.sentry.dsn" android:value="https://81af4c86ec2520fb31d575917d431fe6@o4510583318183936.ingest.de.sentry.io/4510583326507088"/>
+    <meta-data android:name="io.sentry.auto-init" android:value="false" />
     <meta-data android:name="io.sentry.send-default-pii" android:value="false" />
     <meta-data android:name="io.sentry.attach-view-hierarchy" android:value="true" />
     <meta-data android:name="io.sentry.traces.sample-rate" android:value="0.2" />

app/src/main/kotlin/io/github/landwarderer/futon/core/BaseApp.kt

@@ -71,6 +71,10 @@ open class BaseApp : Application(), Configuration.Provider {
 		super.onCreate()
 		PlatformRegistry.applicationContext = this // TODO replace with OkHttp.initialize
 		AppCompatDelegate.setDefaultNightMode(settings.theme)
+		// Initialize Sentry only if user has opted in
+		if (settings.isCrashAnalyticsEnabled) {
+			initializeSentry()
+		}
 		// TLS 1.3 support for Android < 10
 		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
 			Security.insertProviderAt(Conscrypt.newProvider(), 1)
@@ -101,4 +105,21 @@ open class BaseApp : Application(), Configuration.Provider {
 			registerActivityLifecycleCallbacks(it)
 		}
 	}
+
+	private fun initializeSentry() {
+		try {
+			io.sentry.android.core.SentryAndroid.init(this) { options ->
+				// DSN is read from BuildConfig which gets it from SENTRY_DSN environment variable
+				// Only set if DSN is provided (non-empty)
+				if (BuildConfig.SENTRY_DSN.isNotEmpty()) {
+					options.dsn = BuildConfig.SENTRY_DSN
+					options.isEnableAutoSessionTracking = true
+					options.environment = if (BuildConfig.DEBUG) "debug" else "production"
+				}
+			}
+		} catch (e: Exception) {
+			// Log error but don't crash if Sentry initialization fails
+			e.printStackTrace()
+		}
+	}
 }

app/src/main/kotlin/io/github/landwarderer/futon/core/prefs/AppSettings.kt

@@ -580,6 +580,10 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isStatsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_STATS_ENABLED, false)
 
+	var isCrashAnalyticsEnabled: Boolean
+		get() = prefs.getBoolean(KEY_CRASH_ANALYTICS_ENABLED, true)
+		set(value) = prefs.edit { putBoolean(KEY_CRASH_ANALYTICS_ENABLED, value) }
+
 	val isAutoLocalChaptersCleanupEnabled: Boolean
 		get() = prefs.getBoolean(KEY_CHAPTERS_CLEAR_AUTO, false)
 
@@ -817,6 +821,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_DISCORD_RPC = "discord_rpc"
 		const val KEY_DISCORD_RPC_SKIP_NSFW = "discord_rpc_skip_nsfw"
 		const val KEY_DISCORD_TOKEN = "discord_token"
+		const val KEY_CRASH_ANALYTICS_ENABLED = "crash_analytics_enabled"
 
 		// keys for non-persistent preferences
 		const val KEY_APP_VERSION = "app_version"

app/src/main/kotlin/io/github/landwarderer/futon/main/ui/MainActivity.kt

@@ -79,7 +79,6 @@ import io.github.landwarderer.futon.search.ui.suggestion.SearchSuggestionViewMod
 import io.github.landwarderer.futon.search.ui.suggestion.adapter.SearchSuggestionAdapter
 import javax.inject.Inject
 import com.google.android.material.R as materialR
-import io.sentry.Sentry
 
 @AndroidEntryPoint
 class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNavOwner,

app/src/main/kotlin/io/github/landwarderer/futon/main/ui/welcome/WelcomeSheet.kt

@@ -16,6 +16,8 @@ import com.google.android.material.chip.Chip
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.landwarderer.futon.R
+import io.github.landwarderer.futon.core.prefs.AppSettings
+import javax.inject.Inject
 import io.github.landwarderer.futon.core.model.titleResId
 import io.github.landwarderer.futon.core.nav.router
 import io.github.landwarderer.futon.core.ui.sheet.BaseAdaptiveSheet
@@ -33,6 +35,9 @@ import java.util.Locale
 class WelcomeSheet : BaseAdaptiveSheet<SheetWelcomeBinding>(), ChipsView.OnChipClickListener, View.OnClickListener,
 	ActivityResultCallback<Uri?> {
 
+	@Inject
+	lateinit var settings: AppSettings
+
 	private val viewModel by viewModels<WelcomeViewModel>()
 
 	private val backupSelectCall = registerForActivityResult(
@@ -52,6 +57,10 @@ class WelcomeSheet : BaseAdaptiveSheet<SheetWelcomeBinding>(), ChipsView.OnChipC
 		binding.chipBackup.setOnClickListener(this)
 		binding.chipSync.setOnClickListener(this)
 		binding.chipDirectories.setOnClickListener(this)
+		binding.switchCrashReporting.isChecked = settings.isCrashAnalyticsEnabled
+		binding.switchCrashReporting.setOnCheckedChangeListener { _, isChecked ->
+			settings.isCrashAnalyticsEnabled = isChecked
+		}
 
 		viewModel.locales.observe(viewLifecycleOwner, ::onLocalesChanged)
 		viewModel.types.observe(viewLifecycleOwner, ::onTypesChanged)
@@ -125,4 +134,5 @@ class WelcomeSheet : BaseAdaptiveSheet<SheetWelcomeBinding>(), ChipsView.OnChipC
 			},
 		)
 	}
+
 }

app/src/main/res/layout/sheet_welcome.xml

@@ -76,6 +76,44 @@
 
 			</HorizontalScrollView>
 
+			<LinearLayout
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginHorizontal="@dimen/margin_normal"
+				android:layout_marginTop="8dp"
+				android:gravity="center_vertical"
+				android:orientation="horizontal">
+
+				<LinearLayout
+					android:layout_width="0dp"
+					android:layout_height="wrap_content"
+					android:layout_weight="1"
+					android:orientation="vertical">
+
+					<TextView
+						android:layout_width="wrap_content"
+						android:layout_height="wrap_content"
+						android:text="@string/crash_reporting"
+						android:textAppearance="?textAppearanceTitleSmall" />
+
+					<TextView
+						android:layout_width="wrap_content"
+						android:layout_height="wrap_content"
+						android:layout_marginTop="2dp"
+						android:text="@string/crash_reporting_summary"
+						android:textAppearance="?textAppearanceBodySmall" />
+
+				</LinearLayout>
+
+				<com.google.android.material.materialswitch.MaterialSwitch
+					android:id="@+id/switch_crash_reporting"
+					android:layout_width="wrap_content"
+					android:layout_height="wrap_content"
+					android:layout_marginStart="@dimen/margin_normal"
+					android:checked="true" />
+
+			</LinearLayout>
+
 			<TextView
 				android:id="@+id/textView_hint"
 				android:layout_width="match_parent"

app/src/main/res/values/dimens.xml

@@ -4,6 +4,7 @@
 	<!-- Common dimensions -->
 	<dimen name="margin_normal">16dp</dimen>
 	<dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_large">24dp</dimen>
 	<!-- List spacing -->
 	<dimen name="list_spacing_small">6dp</dimen>
 	<dimen name="list_spacing_normal">8dp</dimen>

app/src/main/res/values/strings.xml

@@ -906,4 +906,6 @@
     <string name="download_default_directory">Default directory for downloading manga</string>
     <string name="private_app_directory_warning">This directory with all data will be deleted if you uninstall the application</string>
     <string name="available_pattern">%1$s available</string>
+    <string name="crash_reporting">Crash Reporting</string>
+    <string name="crash_reporting_summary">Send anonymous crash logs to help improve the app. Takes effect after restart.</string>
 </resources>

app/src/main/res/xml/pref_services.xml

@@ -77,4 +77,11 @@
 		app:allowDividerAbove="true"
 		app:icon="@drawable/ic_discord" />
 
+	<SwitchPreferenceCompat
+		android:defaultValue="true"
+		android:key="crash_analytics_enabled"
+		android:summary="@string/crash_reporting_summary"
+		android:title="@string/crash_reporting"
+		app:allowDividerAbove="true" />
+
 </PreferenceScreen>

gradle/libs.versions.toml

@@ -18,7 +18,7 @@ desugar = "2.1.5"
 diskLruCache = "1.5"
 documentfile = "1.1.0"
 fragment = "1.8.9"
-gradle = "8.13.0"
+gradle = "8.13.2"
 guava = "33.4.8-android"
 hilt = "1.3.0"
 json = "20250517"