add crash handler

app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
         tools:ignore="QueryAllPackagesPermission" />
     <uses-permission android:name="android.permission.ACCESS_HIDDEN_PROFILES" />
     <uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
     <application
         android:name=".Application"
@@ -19,6 +20,7 @@
         android:supportsRtl="true"
         android:theme="@style/launcherBaseTheme"
         tools:ignore="UnusedAttribute">
+
         <activity
             android:name=".ui.widgets.manage.ManageWidgetPanelsActivity"
             android:exported="false" />
@@ -80,6 +82,9 @@
         <activity
             android:name=".ui.LegalInfoActivity"
             android:exported="false" />
+        <activity
+            android:name=".ui.ReportCrashActivity"
+            android:exported="false" />
 
         <receiver
             android:name=".actions.lock.LauncherDeviceAdmin"
@@ -110,5 +115,4 @@
                 android:resource="@xml/accessibility_service_config" />
         </service>
     </application>
-
 </manifest>

app/src/main/java/de/jrpie/android/launcher/Application.kt

@@ -25,6 +25,7 @@ import de.jrpie.android.launcher.preferences.resetPreferences
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlin.system.exitProcess
 
 
 const val APP_WIDGET_HOST_ID = 42;
@@ -106,6 +107,11 @@ class Application : android.app.Application() {
         // TODO  Error: Invalid resource ID 0x00000000.
         // DynamicColors.applyToActivitiesIfAvailable(this)
 
+        Thread.setDefaultUncaughtExceptionHandler { _, throwable ->
+            sendCrashNotification(this@Application, throwable)
+            exitProcess(1)
+        }
+
 
         if (Build.VERSION.SDK_INT >= VERSION_CODES.M) {
             torchManager = TorchManager(this)
@@ -157,6 +163,8 @@ class Application : android.app.Application() {
             removeUnusedShortcuts(this)
         }
         loadApps()
+
+        createNotificationChannels(this)
     }
 
     fun getCustomAppNames(): HashMap<AbstractAppInfo, String> {

app/src/main/java/de/jrpie/android/launcher/Functions.kt

@@ -6,9 +6,6 @@ import android.app.role.RoleManager
 import android.content.ActivityNotFoundException
 import android.content.ClipData
 import android.content.ClipboardManager
-import android.appwidget.AppWidgetManager
-import android.appwidget.AppWidgetProvider
-import android.appwidget.AppWidgetProviderInfo
 import android.content.Context
 import android.content.Intent
 import android.content.pm.LauncherApps
@@ -227,3 +224,13 @@ fun copyToClipboard(context: Context, text: String) {
     val clipData = ClipData.newPlainText("Debug Info", text)
     clipboardManager.setPrimaryClip(clipData)
 }
+
+fun writeEmail(context: Context, to: String, subject: String, text: String) {
+    val intent = Intent(Intent.ACTION_SENDTO)
+    intent.setData("mailto:".toUri())
+    intent.putExtra(Intent.EXTRA_EMAIL, arrayOf(to))
+    intent.putExtra(Intent.EXTRA_SUBJECT, subject)
+    intent.putExtra(Intent.EXTRA_TEXT, text)
+    context.startActivity(Intent.createChooser(intent, context.getString(R.string.send_email)))
+}
+

app/src/main/java/de/jrpie/android/launcher/Notifications.kt

@@ -0,0 +1,87 @@
+package de.jrpie.android.launcher
+
+import android.app.Activity
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Build
+import android.util.Log
+import androidx.core.app.ActivityCompat
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import de.jrpie.android.launcher.ui.EXTRA_CRASH_LOG
+import de.jrpie.android.launcher.ui.ReportCrashActivity
+import java.io.PrintWriter
+import java.io.StringWriter
+import kotlin.random.Random
+
+private val NOTIFICATION_CHANNEL_CRASH = "launcher:crash"
+
+fun createNotificationChannels(context: Context) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        val notificationChannel = NotificationChannel(
+            NOTIFICATION_CHANNEL_CRASH,
+            context.getString(R.string.notification_channel_crash),
+            NotificationManager.IMPORTANCE_HIGH
+        )
+
+        val notificationManager =
+            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        notificationManager.createNotificationChannel(notificationChannel)
+    }
+}
+
+fun requestNotificationPermission(activity: Activity) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+        return
+    }
+
+    val permission =
+        (activity.checkSelfPermission(android.Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED)
+
+    if (!permission) {
+        ActivityCompat.requestPermissions(
+            activity,
+            arrayOf( android.Manifest.permission.POST_NOTIFICATIONS ),
+            1
+        )
+    }
+}
+
+fun sendCrashNotification(context: Context, throwable: Throwable) {
+    val stringWriter = StringWriter()
+    val printWriter = PrintWriter(stringWriter)
+    throwable.printStackTrace(printWriter)
+
+    val intent = Intent(context, ReportCrashActivity::class.java)
+    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK)
+    intent.putExtra(EXTRA_CRASH_LOG, stringWriter.toString())
+
+    val pendingIntent = PendingIntent.getActivity(
+        context,
+        Random.nextInt(),
+        intent,
+        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+    )
+
+    val builder = NotificationCompat.Builder(context, NOTIFICATION_CHANNEL_CRASH)
+        .setSmallIcon(R.drawable.baseline_bug_report_24)
+        .setContentTitle(context.getString(R.string.notification_crash_title))
+        .setContentText(context.getString(R.string.notification_crash_explanation))
+        .setContentIntent(pendingIntent)
+        .setAutoCancel(false)
+        .setPriority(NotificationCompat.PRIORITY_HIGH)
+
+    val notificationManager = NotificationManagerCompat.from(context)
+    try {
+        notificationManager.notify(
+            0,
+            builder.build()
+        )
+    } catch (e: SecurityException) {
+        Log.e("Crash Notification", "Could not send notification")
+    }
+}

app/src/main/java/de/jrpie/android/launcher/preferences/Preferences.kt

@@ -14,6 +14,7 @@ import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersio
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion3
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion4
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersionUnknown
+import de.jrpie.android.launcher.sendCrashNotification
 import de.jrpie.android.launcher.ui.HomeActivity
 import de.jrpie.android.launcher.widgets.ClockWidget
 import de.jrpie.android.launcher.widgets.DebugInfoWidget
@@ -76,6 +77,7 @@ fun migratePreferencesToNewVersion(context: Context) {
         }
     } catch (e: Exception) {
         Log.e(TAG, "Unable to restore preferences:\n${e.stackTrace}")
+        sendCrashNotification(context, e)
         resetPreferences(context)
     }
 }

app/src/main/java/de/jrpie/android/launcher/ui/ReportCrashActivity.kt

@@ -0,0 +1,57 @@
+package de.jrpie.android.launcher.ui
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import de.jrpie.android.launcher.R
+import de.jrpie.android.launcher.copyToClipboard
+import de.jrpie.android.launcher.databinding.ActivityReportCrashBinding
+import de.jrpie.android.launcher.getDeviceInfo
+import de.jrpie.android.launcher.openInBrowser
+import de.jrpie.android.launcher.writeEmail
+
+const val EXTRA_CRASH_LOG = "crashLog"
+
+class ReportCrashActivity : AppCompatActivity() {
+    // We don't know what caused the crash, so this Activity should use as little functionality as possible.
+    // In particular it is not a UIObject (and hence looks quite ugly)
+    private lateinit var binding: ActivityReportCrashBinding
+    private var report: String? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Initialise layout
+        binding = ActivityReportCrashBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        setTitle(R.string.report_crash_title)
+        setSupportActionBar(binding.reportCrashAppbar)
+        supportActionBar?.setDisplayHomeAsUpEnabled(false)
+
+        report = intent.getStringExtra(EXTRA_CRASH_LOG)
+
+        binding.reportCrashButtonCopy.setOnClickListener {
+            copyToClipboard(this,
+                "Device Info:\n${getDeviceInfo()}\n\nCrash Log:\n${report}")
+        }
+
+        binding.reportCrashButtonMail.setOnClickListener {
+            writeEmail(
+                this,
+                getString(R.string.settings_meta_report_bug_mail),
+                "Crash in μLauncher",
+                "Hi!\nUnfortunately, μLauncher crashed:\n" +
+                        "\nDevice Info\n\n${getDeviceInfo()}\n\n" +
+                        "\nCrash Log\n\n${report}\n" +
+                        "\nAdditional Information\n\n" +
+                        "[Please add additional information: What did you do when the crash happened? Do you know how to trigger it? ... ]"
+            )
+        }
+        binding.reportCrashButtonReport.setOnClickListener {
+            openInBrowser(
+                getString(R.string.settings_meta_report_bug_link),
+                this
+            )
+        }
+    }
+}

app/src/main/java/de/jrpie/android/launcher/ui/tutorial/tabs/TutorialFragment5Finish.kt

@@ -8,6 +8,7 @@ import androidx.fragment.app.Fragment
 import de.jrpie.android.launcher.BuildConfig.VERSION_CODE
 import de.jrpie.android.launcher.databinding.Tutorial5FinishBinding
 import de.jrpie.android.launcher.preferences.LauncherPreferences
+import de.jrpie.android.launcher.requestNotificationPermission
 import de.jrpie.android.launcher.setDefaultHomeScreen
 import de.jrpie.android.launcher.ui.UIObject
 
@@ -31,8 +32,10 @@ class TutorialFragment5Finish : Fragment(), UIObject {
     override fun onStart() {
         super<Fragment>.onStart()
         super<UIObject>.onStart()
+        requestNotificationPermission(requireActivity())
     }
 
+
     override fun setOnClicks() {
         super.setOnClicks()
         binding.tutorialFinishButtonStart.setOnClickListener { finishTutorial() }
@@ -44,6 +47,7 @@ class TutorialFragment5Finish : Fragment(), UIObject {
             LauncherPreferences.internal().startedTime(System.currentTimeMillis() / 1000L)
         }
         context?.let { setDefaultHomeScreen(it, checkDefault = true) }
+
         activity?.finish()
     }
 }

app/src/main/res/drawable/baseline_bug_report_24.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="?android:textColor"
+        android:pathData="M20,8h-2.81c-0.45,-0.78 -1.07,-1.45 -1.82,-1.96L17,4.41 15.59,3l-2.17,2.17C12.96,5.06 12.49,5 12,5c-0.49,0 -0.96,0.06 -1.41,0.17L8.41,3 7,4.41l1.62,1.63C7.88,6.55 7.26,7.22 6.81,8L4,8v2h2.09c-0.05,0.33 -0.09,0.66 -0.09,1v1L4,12v2h2v1c0,0.34 0.04,0.67 0.09,1L4,16v2h2.81c1.04,1.79 2.97,3 5.19,3s4.15,-1.21 5.19,-3L20,18v-2h-2.09c0.05,-0.33 0.09,-0.66 0.09,-1v-1h2v-2h-2v-1c0,-0.34 -0.04,-0.67 -0.09,-1L20,10L20,8zM14,16h-4v-2h4v2zM14,12h-4v-2h4v2z" />
+
+</vector>

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

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:context=".ui.ReportCrashActivity">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:background="@null"
+        app:elevation="0dp"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/report_crash_appbar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" >
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:padding="10dp">
+
+            <de.jrpie.android.launcher.ui.util.HtmlTextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/crash_info" />
+
+            <Button
+                android:id="@+id/report_crash_button_copy"
+                android:text="@string/report_crash_button_copy"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="20dp" />
+            <Button
+                android:id="@+id/report_crash_button_mail"
+                android:text="@string/report_crash_button_mail"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+            <Button
+                android:id="@+id/report_crash_button_report"
+                android:text="@string/report_crash_button_report"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+        </LinearLayout>
+    </ScrollView>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -162,6 +162,7 @@
         -->
         <string name="settings_meta_link_github" translatable="false">https://github.com/jrpie/Launcher</string>
         <string name="settings_meta_report_bug_link" translatable="false">https://github.com/jrpie/Launcher/issues/new?template=bug_report.yaml</string>
+        <string name="settings_meta_report_bug_mail" translatable="false">android-launcher-crash@jrpie.de</string>
         <string name="settings_meta_report_vulnerability_link" translatable="false">https://github.com/jrpie/Launcher/security/policy</string>
         <string name="settings_meta_fork_contact_url" translatable="false">https://s.jrpie.de/contact</string>
         <string name="settings_meta_privacy_url" translatable="false">https://s.jrpie.de/android-legal</string>

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

@@ -419,5 +419,28 @@
     <string name="list_other_open_widget_panel">Open Widget Panel</string>
     <string name="alert_widget_panel_not_found">This widget panel no longer exists.</string>
     <string name="settings_launcher_section_widgets">Widgets</string>
-
+    <string name="notification_crash_title">μLauncher crashed</string>
+    <string name="notification_crash_explanation">Sorry! Click for more information.</string>
+    <string name="crash_info"><![CDATA[
+        Looks like something went wrong, sorry about that!<br><br>
+        For privacy reasons, crash logs are not collected automatically.<br>
+        However logs are very useful for debugging, so I would be very grateful if you could send me the attached log by mail
+        or create a bug report on github.<br><br>
+        Note that crash logs might contain <strong>sensitive information</strong>, e.g. the name of an app you tried to launch.
+        Please <strong>redact</strong> such information before sending the report.
+        <h2>What can I do now?</h2>
+        If this bug appears again and again, you can try several things:
+        <ul>
+        <li>Force stop μLauncher</li>
+        <li>Clear μLauncher\'s storage (<strong>Your settings will be lost!</strong>)</li>
+        <li>Install an older version (<a href=\"https://github.com/jrpie/Launcher/releases\">GitHub</a>, <a href=\"https://f-droid.org/en/packages/de.jrpie.android.launcher\">F-Droid</a>)</li>
+        </ul>
+        ]]>
+    </string>
+    <string name="report_crash_button_copy">Copy crash report to clipboard</string>
+    <string name="report_crash_button_mail">Send report by mail</string>
+    <string name="report_crash_button_report">Create bug report on GitHub</string>
+    <string name="report_crash_title">μLauncher crashed</string>
+    <string name="send_email">Send Email</string>
+    <string name="notification_channel_crash">Crashes and Debug Information</string>
 </resources>