add option to hide keyboard when scrolling (cf. #142)

app/src/main/java/de/jrpie/android/launcher/preferences/LauncherPreferences$Config.java

@@ -72,6 +72,7 @@ import eu.jonahbauer.android.preference.annotations.Preferences;
                         @Preference(name = "search_auto_launch", type = boolean.class, defaultValue = "true"),
                         @Preference(name = "search_web", type = boolean.class, description = "false"),
                         @Preference(name = "search_auto_open_keyboard", type = boolean.class, defaultValue = "true"),
+                        @Preference(name = "search_auto_close_keyboard", type = boolean.class, defaultValue = "false"),
                 }),
                 @PreferenceGroup(name = "enabled_gestures", prefix = "settings_enabled_gestures_", suffix = "_key", value = {
                         @Preference(name = "double_swipe", type = boolean.class, defaultValue = "true"),

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

@@ -1,5 +1,6 @@
 package de.jrpie.android.launcher.ui
 
+import android.app.Activity
 import android.content.Context
 import android.graphics.ColorMatrix
 import android.graphics.ColorMatrixColorFilter
@@ -38,10 +39,17 @@ fun ImageView.transformGrayscale(grayscale: Boolean) {
 }
 
 
-// Taken from https://stackoverflow.com/a/50743764/12787264
+// Taken from https://stackoverflow.com/a/50743764
 fun View.openSoftKeyboard(context: Context) {
     this.requestFocus()
-    // open the soft keyboard
+    (context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
-    val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
+        .showSoftInput(this, InputMethodManager.SHOW_IMPLICIT)
-    imm.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT)
+}
+
+// https://stackoverflow.com/a/17789187
+fun closeSoftKeyboard(activity: Activity) {
+    activity.currentFocus?.let { focus ->
+        (activity.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager)
+            .hideSoftInputFromWindow( focus.windowToken, 0 )
+    }
 }

app/src/main/java/de/jrpie/android/launcher/ui/list/apps/ListFragmentApps.kt

@@ -11,13 +11,16 @@ import android.widget.Toast
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import de.jrpie.android.launcher.R
 import de.jrpie.android.launcher.apps.AppFilter
 import de.jrpie.android.launcher.databinding.ListAppsBinding
 import de.jrpie.android.launcher.preferences.LauncherPreferences
 import de.jrpie.android.launcher.ui.UIObject
+import de.jrpie.android.launcher.ui.closeSoftKeyboard
 import de.jrpie.android.launcher.ui.list.ListActivity
 import de.jrpie.android.launcher.ui.openSoftKeyboard
+import kotlin.math.absoluteValue
 
 
 /**
@@ -90,6 +93,20 @@ class ListFragmentApps : Fragment(), UIObject {
                     }
                 }
             adapter = appsRecyclerAdapter
+            if (LauncherPreferences.functionality().searchAutoCloseKeyboard()) {
+                addOnScrollListener(object : RecyclerView.OnScrollListener() {
+                    var totalDy: Int = 0
+                    var threshold = (resources.displayMetrics.density * 100).toInt()
+                    override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                        totalDy += dy
+
+                        if (totalDy.absoluteValue > 100) {
+                            totalDy = 0
+                            closeSoftKeyboard(requireActivity())
+                        }
+                    }
+                })
+            }
         }
 
         binding.listAppsSearchview.setOnQueryTextListener(object :

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

@@ -147,6 +147,7 @@
         <string name="settings_functionality_search_auto_launch_key" translatable="false">functionality.search_auto_launch</string>
         <string name="settings_functionality_search_web_key" translatable="false">functionality.search_web</string>
         <string name="settings_functionality_search_auto_open_keyboard_key" translatable="false">functionality.search_auto_keyboard</string>
+        <string name="settings_functionality_search_auto_close_keyboard_key" translatable="false">functionality.search_auto_close_keyboard</string>
 
 
         <string name="settings_actions_lock_method_key" translatable="false">settings_action_lock_method</string>

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

@@ -167,6 +167,7 @@
     <string name="settings_functionality_search_web">Search the web</string>
     <string name="settings_functionality_search_web_summary">Press return while searching the app list to launch a web search.</string>
     <string name="settings_functionality_auto_keyboard">Start keyboard for search</string>
+    <string name="settings_functionality_auto_close_keyboard">Close keyboard when scrolling</string>
 
     <string name="settings_launcher_sensitivity">Sensitivity</string>
 

app/src/main/res/xml/preferences.xml

@@ -104,6 +104,10 @@
             android:key="@string/settings_functionality_search_auto_open_keyboard_key"
             android:defaultValue="true"
             android:title="@string/settings_functionality_auto_keyboard" />
+        <SwitchPreference
+            android:key="@string/settings_functionality_search_auto_close_keyboard_key"
+            android:defaultValue="false"
+            android:title="@string/settings_functionality_auto_close_keyboard" />
         <SwitchPreference
             android:key="@string/settings_enabled_gestures_double_swipe_key"
             android:summary="@string/settings_enabled_gestures_double_swipe_summary"