handle displaying config screen before placing widget, when available

app/src/main/kotlin/com/simplemobiletools/launcher/activities/MainActivity.kt

@@ -3,6 +3,7 @@ package com.simplemobiletools.launcher.activities
 import android.animation.ObjectAnimator
 import android.annotation.SuppressLint
 import android.app.Activity
+import android.appwidget.AppWidgetHost
 import android.appwidget.AppWidgetManager
 import android.appwidget.AppWidgetProviderInfo
 import android.content.Context
@@ -48,6 +49,7 @@ class MainActivity : SimpleActivity(), FlingListener {
     private var mCachedLaunchers = ArrayList<AppLauncher>()
     private var mLastTouchCoords = Pair(0f, 0f)
     private var mActionOnCanBindWidget: ((granted: Boolean) -> Unit)? = null
+    private var mActionOnWidgetConfiguredWidget: ((granted: Boolean) -> Unit)? = null
 
     private lateinit var mDetector: GestureDetectorCompat
 
@@ -114,12 +116,14 @@ class MainActivity : SimpleActivity(), FlingListener {
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
         super.onActivityResult(requestCode, resultCode, resultData)
-        if (requestCode == UNINSTALL_APP_REQUEST_CODE) {
+        when (requestCode) {
-            ensureBackgroundThread {
+            UNINSTALL_APP_REQUEST_CODE -> {
-                refetchLaunchers()
+                ensureBackgroundThread {
+                    refetchLaunchers()
+                }
             }
-        } else if (requestCode == REQUEST_ALLOW_BINDING_WIDGET) {
+            REQUEST_ALLOW_BINDING_WIDGET -> mActionOnCanBindWidget?.invoke(resultCode == Activity.RESULT_OK)
-            mActionOnCanBindWidget?.invoke(resultCode == Activity.RESULT_OK)
+            REQUEST_CONFIGURE_WIDGET -> mActionOnWidgetConfiguredWidget?.invoke(resultCode == Activity.RESULT_OK)
         }
     }
 
@@ -500,6 +504,17 @@ class MainActivity : SimpleActivity(), FlingListener {
         }
     }
 
+    fun handleWidgetConfigureScreen(appWidgetHost: AppWidgetHost, appWidgetId: Int, callback: (canBind: Boolean) -> Unit) {
+        mActionOnWidgetConfiguredWidget = callback
+        appWidgetHost.startAppWidgetConfigureActivityForResult(
+            this,
+            appWidgetId,
+            0,
+            REQUEST_CONFIGURE_WIDGET,
+            null
+        )
+    }
+
     // taken from https://gist.github.com/maxjvh/a6ab15cbba9c82a5065d
     private fun calculateAverageColor(bitmap: Bitmap): Int {
         var red = 0

app/src/main/kotlin/com/simplemobiletools/launcher/views/HomeScreenGrid.kt

@@ -2,6 +2,7 @@ package com.simplemobiletools.launcher.views
 
 import android.annotation.SuppressLint
 import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProviderInfo
 import android.content.Context
 import android.graphics.Canvas
 import android.graphics.Color
@@ -274,23 +275,17 @@ class HomeScreenGrid(context: Context, attrs: AttributeSet, defStyle: Int) : Rel
             activity.handleWidgetBinding(appWidgetManager, appWidgetId, appWidgetProviderInfo) { canBind ->
                 if (canBind) {
                     if (appWidgetProviderInfo.configure != null && !isInitialDrawAfterLaunch) {
-                        appWidgetHost.startAppWidgetConfigureActivityForResult(
+                        activity.handleWidgetConfigureScreen(appWidgetHost, appWidgetId) { success ->
-                            context as MainActivity,
+                            if (success) {
-                            appWidgetId,
+                                placeAppWidget(appWidgetId, appWidgetProviderInfo, item)
-                            0,
+                            } else if (item.id != null) {
-                            REQUEST_CONFIGURE_WIDGET,
+                                ensureBackgroundThread {
-                            null
+                                    context.homeScreenGridItemsDB.deleteById(item.id!!)
-                        )
+                                }
+                            }
+                        }
                     } else {
-                        // we have to pass the base context here, else there will be errors with the themes
+                        placeAppWidget(appWidgetId, appWidgetProviderInfo, item)
-                        val widgetView = appWidgetHost.createView(activity.baseContext, appWidgetId, appWidgetProviderInfo) as MyAppWidgetHostView
-                        widgetView.setAppWidget(appWidgetId, appWidgetProviderInfo)
-
-                        widgetView.x = item.left * rowWidth + sideMargins.left.toFloat()
-                        widgetView.y = item.top * rowHeight + sideMargins.top.toFloat()
-                        val widgetWidth = item.widthCells * rowWidth
-                        val widgetHeight = item.heightCells * rowHeight
-                        addView(widgetView, widgetWidth, widgetHeight)
                     }
                 } else if (item.id != null) {
                     ensureBackgroundThread {
@@ -301,6 +296,18 @@ class HomeScreenGrid(context: Context, attrs: AttributeSet, defStyle: Int) : Rel
         }
     }
 
+    private fun placeAppWidget(appWidgetId: Int, appWidgetProviderInfo: AppWidgetProviderInfo, item: HomeScreenGridItem) {
+        // we have to pass the base context here, else there will be errors with the themes
+        val widgetView = appWidgetHost.createView((context as MainActivity).baseContext, appWidgetId, appWidgetProviderInfo) as MyAppWidgetHostView
+        widgetView.setAppWidget(appWidgetId, appWidgetProviderInfo)
+
+        widgetView.x = item.left * rowWidth + sideMargins.left.toFloat()
+        widgetView.y = item.top * rowHeight + sideMargins.top.toFloat()
+        val widgetWidth = item.widthCells * rowWidth
+        val widgetHeight = item.heightCells * rowHeight
+        addView(widgetView, widgetWidth, widgetHeight)
+    }
+
     // convert stuff like 102x192 to grid cells like 0x1
     private fun getClosestGridCells(center: Pair<Int, Int>): Pair<Int, Int>? {
         rowXCoords.forEachIndexed { xIndex, xCell ->