(try to) fix #172

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

@@ -10,6 +10,7 @@ import de.jrpie.android.launcher.apps.AbstractAppInfo.Companion.INVALID_USER
 import de.jrpie.android.launcher.apps.AppInfo
 import de.jrpie.android.launcher.apps.DetailedAppInfo
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion1
+import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion100
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion2
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion3
 import de.jrpie.android.launcher.preferences.legacy.migratePreferencesFromVersion4
@@ -21,12 +22,13 @@ import de.jrpie.android.launcher.widgets.DebugInfoWidget
 import de.jrpie.android.launcher.widgets.WidgetPanel
 import de.jrpie.android.launcher.widgets.WidgetPosition
 import de.jrpie.android.launcher.widgets.deleteAllWidgets
+import de.jrpie.android.launcher.widgets.generateInternalId
 
 /* Current version of the structure of preferences.
  * Increase when breaking changes are introduced and write an appropriate case in
  * `migratePreferencesToNewVersion`
  */
-const val PREFERENCE_VERSION = 100
+const val PREFERENCE_VERSION = 101
 const val UNKNOWN_PREFERENCE_VERSION = -1
 private const val TAG = "Launcher - Preferences"
 
@@ -65,6 +67,10 @@ fun migratePreferencesToNewVersion(context: Context) {
                 migratePreferencesFromVersion4(context)
                 Log.i(TAG, "migration of preferences  complete (4 -> ${PREFERENCE_VERSION}).")
             }
+            100 -> {
+                migratePreferencesFromVersion100(context)
+                Log.i(TAG, "migration of preferences  complete (100 -> ${PREFERENCE_VERSION}).")
+            }
 
             else -> {
                 Log.w(
@@ -91,7 +97,7 @@ fun resetPreferences(context: Context) {
     LauncherPreferences.widgets().widgets(
         setOf(
             ClockWidget(
-                (context.applicationContext as Application).appWidgetHost.allocateAppWidgetId(),
+                generateInternalId(),
                 WidgetPosition(1, 3, 10, 4),
                 WidgetPanel.HOME.id
             )
@@ -103,7 +109,7 @@ fun resetPreferences(context: Context) {
             LauncherPreferences.widgets().widgets().also {
                 it.add(
                     DebugInfoWidget(
-                        (context.applicationContext as Application).appWidgetHost.allocateAppWidgetId(),
+                        generateInternalId(),
                         WidgetPosition(1, 1, 10, 4),
                         WidgetPanel.HOME.id
                     )

app/src/main/java/de/jrpie/android/launcher/preferences/legacy/Version100.kt

@@ -0,0 +1,39 @@
+package de.jrpie.android.launcher.preferences.legacy
+
+import android.content.Context
+import de.jrpie.android.launcher.Application
+import de.jrpie.android.launcher.preferences.LauncherPreferences
+import de.jrpie.android.launcher.preferences.PREFERENCE_VERSION
+import de.jrpie.android.launcher.widgets.ClockWidget
+import de.jrpie.android.launcher.widgets.DebugInfoWidget
+import de.jrpie.android.launcher.widgets.generateInternalId
+import de.jrpie.android.launcher.widgets.updateWidget
+
+fun migratePreferencesFromVersion100(context: Context) {
+    assert(PREFERENCE_VERSION == 101)
+    assert(LauncherPreferences.internal().versionCode() == 100)
+
+    val widgets = LauncherPreferences.widgets().widgets() ?: setOf()
+    widgets.forEach { widget ->
+        when (widget) {
+            is ClockWidget -> {
+                val id = widget.id
+                val newId = generateInternalId()
+                (context.applicationContext as Application).appWidgetHost.deleteAppWidgetId(id)
+                widget.delete(context)
+                widget.id = newId
+                updateWidget(widget)
+            }
+            is DebugInfoWidget -> {
+                val id = widget.id
+                val newId = generateInternalId()
+                (context.applicationContext as Application).appWidgetHost.deleteAppWidgetId(id)
+                widget.delete(context)
+                widget.id = newId
+                updateWidget(widget)
+            }
+            else -> {}
+        }
+    }
+    LauncherPreferences.internal().versionCode(101)
+}

app/src/main/java/de/jrpie/android/launcher/preferences/legacy/Version4.kt

@@ -7,19 +7,20 @@ import de.jrpie.android.launcher.preferences.PREFERENCE_VERSION
 import de.jrpie.android.launcher.widgets.ClockWidget
 import de.jrpie.android.launcher.widgets.WidgetPanel
 import de.jrpie.android.launcher.widgets.WidgetPosition
+import de.jrpie.android.launcher.widgets.generateInternalId
 
 fun migratePreferencesFromVersion4(context: Context) {
-    assert(PREFERENCE_VERSION == 100)
     assert(LauncherPreferences.internal().versionCode() < 100)
 
     LauncherPreferences.widgets().widgets(
         setOf(
             ClockWidget(
-                (context.applicationContext as Application).appWidgetHost.allocateAppWidgetId(),
+                generateInternalId(),
                 WidgetPosition(1, 3, 10, 4),
                 WidgetPanel.HOME.id
             )
         )
     )
     LauncherPreferences.internal().versionCode(100)
+    migratePreferencesFromVersion100(context)
 }

app/src/main/java/de/jrpie/android/launcher/ui/widgets/manage/ManageWidgetsActivity.kt

@@ -135,10 +135,6 @@ class ManageWidgetsActivity : UIObject, Activity() {
         val appWidgetHost = (application as Application).appWidgetHost
         startActivityForResult(
             Intent(this, SelectWidgetActivity::class.java).also {
-                it.putExtra(
-                    AppWidgetManager.EXTRA_APPWIDGET_ID,
-                    appWidgetHost.allocateAppWidgetId()
-                )
                 it.putExtra(
                     EXTRA_PANEL_ID,
                     panelId

app/src/main/java/de/jrpie/android/launcher/ui/widgets/manage/SelectWidgetActivity.kt

@@ -14,6 +14,7 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import de.jrpie.android.launcher.Application
 import de.jrpie.android.launcher.R
 import de.jrpie.android.launcher.databinding.ActivitySelectWidgetBinding
 import de.jrpie.android.launcher.ui.UIObject
@@ -24,7 +25,7 @@ import de.jrpie.android.launcher.widgets.LauncherWidgetProvider
 import de.jrpie.android.launcher.widgets.WidgetPanel
 import de.jrpie.android.launcher.widgets.WidgetPosition
 import de.jrpie.android.launcher.widgets.bindAppWidgetOrRequestPermission
-import de.jrpie.android.launcher.widgets.getAppWidgetHost
+import de.jrpie.android.launcher.widgets.generateInternalId
 import de.jrpie.android.launcher.widgets.getAppWidgetProviders
 import de.jrpie.android.launcher.widgets.updateWidget
 
@@ -38,12 +39,13 @@ private const val REQUEST_WIDGET_PERMISSION = 29
  */
 class SelectWidgetActivity : AppCompatActivity(), UIObject {
     lateinit var binding: ActivitySelectWidgetBinding
-    var widgetId: Int = -1
     var widgetPanelId: Int = WidgetPanel.HOME.id
 
     private fun tryBindWidget(info: LauncherWidgetProvider) {
         when (info) {
             is LauncherAppWidgetProvider -> {
+                val widgetId =
+                    (applicationContext as Application).appWidgetHost.allocateAppWidgetId()
                 if (bindAppWidgetOrRequestPermission(
                         this,
                         info.info,
@@ -62,7 +64,7 @@ class SelectWidgetActivity : AppCompatActivity(), UIObject {
                 }
             }
             is LauncherClockWidgetProvider -> {
-                updateWidget(ClockWidget(widgetId, WidgetPosition(0, 4, 12, 3), widgetPanelId))
+                updateWidget(ClockWidget(generateInternalId(), WidgetPosition(0, 4, 12, 3), widgetPanelId))
                 finish()
             }
         }
@@ -81,11 +83,7 @@ class SelectWidgetActivity : AppCompatActivity(), UIObject {
         setContentView(binding.root)
 
 
-        widgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1)
         widgetPanelId = intent.getIntExtra(EXTRA_PANEL_ID, WidgetPanel.HOME.id)
-        if (widgetId == -1) {
-            widgetId = getAppWidgetHost().allocateAppWidgetId()
-        }
 
         val viewManager = LinearLayoutManager(this)
         val viewAdapter = SelectWidgetRecyclerAdapter()

app/src/main/java/de/jrpie/android/launcher/widgets/ClockWidget.kt

@@ -12,7 +12,7 @@ import kotlinx.serialization.Serializable
 @Serializable
 @SerialName("widget:clock")
 class ClockWidget(
-    override val id: Int,
+    override var id: Int,
     override var position: WidgetPosition,
     override val panelId: Int,
     override var allowInteraction: Boolean = true

app/src/main/java/de/jrpie/android/launcher/widgets/DebugInfoWidget.kt

@@ -12,7 +12,7 @@ import kotlinx.serialization.Serializable
 @Serializable
 @SerialName("widget:debuginfo")
 class DebugInfoWidget(
-    override val id: Int,
+    override var id: Int,
     override var position: WidgetPosition,
     override val panelId: Int,
     override var allowInteraction: Boolean = true

app/src/main/java/de/jrpie/android/launcher/widgets/Widget.kt

@@ -27,7 +27,9 @@ sealed class Widget {
     abstract fun configure(activity: Activity, requestCode: Int)
 
     fun delete(context: Context) {
-        context.getAppWidgetHost().deleteAppWidgetId(id)
+        if (id >= 0) {
+            context.getAppWidgetHost().deleteAppWidgetId(id)
+        }
 
         LauncherPreferences.widgets().widgets(
             LauncherPreferences.widgets().widgets()?.also {

app/src/main/java/de/jrpie/android/launcher/widgets/Widgets.kt

@@ -13,6 +13,7 @@ import android.os.UserManager
 import android.util.Log
 import de.jrpie.android.launcher.Application
 import de.jrpie.android.launcher.preferences.LauncherPreferences
+import kotlin.math.min
 
 fun deleteAllWidgets(context: Context) {
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
@@ -29,12 +30,9 @@ fun deleteAllWidgets(context: Context) {
  *
  * @return true iff the app widget was bound successfully.
  */
-fun bindAppWidgetOrRequestPermission(activity: Activity, providerInfo: AppWidgetProviderInfo, id: Int, requestCode: Int? = null): Boolean {
-    val appWidgetId = if(id == -1) {
-        activity.getAppWidgetHost().allocateAppWidgetId()
-    } else { id }
+fun bindAppWidgetOrRequestPermission(activity: Activity, providerInfo: AppWidgetProviderInfo, appWidgetId: Int, requestCode: Int? = null): Boolean {
 
-    Log.i("Launcher", "Binding new widget ${appWidgetId}")
+    Log.i("Launcher", "Binding new widget $appWidgetId")
     if (!activity.getAppWidgetManager().bindAppWidgetIdIfAllowed(
             appWidgetId,
             providerInfo.provider
@@ -79,6 +77,13 @@ fun updateWidget(widget: Widget) {
     )
 }
 
+
+// TODO: this needs to be improved
+fun generateInternalId(): Int {
+    val minId = min(-5,(LauncherPreferences.widgets().widgets() ?: setOf()).minOfOrNull { it.id } ?: 0)
+    return minId -1
+}
+
 fun updateWidgetPanel(widgetPanel: WidgetPanel) {
     LauncherPreferences.widgets().customPanels(
         (LauncherPreferences.widgets().customPanels() ?: setOf())
@@ -92,4 +97,4 @@ fun Context.getAppWidgetHost(): AppWidgetHost {
 }
 fun Context.getAppWidgetManager(): AppWidgetManager {
     return (this.applicationContext as Application).appWidgetManager
-}
+}