Manually control SearchView focus

src/main/kotlin/nya/kitsunyan/foxydroid/screen/TabsFragment.kt

@@ -42,10 +42,12 @@ import nya.kitsunyan.foxydroid.utility.extension.android.*
 import nya.kitsunyan.foxydroid.utility.extension.resources.*
 import nya.kitsunyan.foxydroid.utility.extension.text.*
 import nya.kitsunyan.foxydroid.widget.EnumRecyclerAdapter
+import nya.kitsunyan.foxydroid.widget.FocusSearchView
 import kotlin.math.*
 
 class TabsFragment: ScreenFragment() {
   companion object {
+    private const val STATE_SEARCH_FOCUSED = "searchFocused"
     private const val STATE_SEARCH_QUERY = "searchQuery"
     private const val STATE_SHOW_CATEGORIES = "showCategories"
     private const val STATE_CATEGORIES = "categories"
@@ -115,8 +117,11 @@ class TabsFragment: ScreenFragment() {
     val toolbar = view.findViewById<Toolbar>(R.id.toolbar)!!
     screenActivity.onToolbarCreated(toolbar)
     toolbar.setTitle(R.string.app_name)
+    // Move focus from SearchView to Toolbar
+    toolbar.isFocusableInTouchMode = true
 
-    val searchView = SearchView(toolbar.context)
+    val searchView = FocusSearchView(toolbar.context)
+    searchView.allowFocus = savedInstanceState?.getBoolean(STATE_SEARCH_FOCUSED) == true
     searchView.maxWidth = Int.MAX_VALUE
     searchView.setOnQueryTextListener(object: SearchView.OnQueryTextListener {
       override fun onQueryTextSubmit(query: String?): Boolean {
@@ -307,6 +312,7 @@ class TabsFragment: ScreenFragment() {
   override fun onSaveInstanceState(outState: Bundle) {
     super.onSaveInstanceState(outState)
 
+    outState.putBoolean(STATE_SEARCH_FOCUSED, searchMenuItem?.actionView!!.hasFocus())
     outState.putString(STATE_SEARCH_QUERY, searchQuery)
     outState.putByte(STATE_SHOW_CATEGORIES, if (showCategories) 1 else 0)
     outState.putStringArrayList(STATE_CATEGORIES, ArrayList(categories))
@@ -317,6 +323,7 @@ class TabsFragment: ScreenFragment() {
   override fun onViewStateRestored(savedInstanceState: Bundle?) {
     super.onViewStateRestored(savedInstanceState)
 
+    (searchMenuItem?.actionView as FocusSearchView).allowFocus = true
     if (needSelectUpdates) {
       needSelectUpdates = false
       selectUpdatesInternal(false)

src/main/kotlin/nya/kitsunyan/foxydroid/widget/FocusSearchView.kt

@@ -0,0 +1,35 @@
+package nya.kitsunyan.foxydroid.widget
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.KeyEvent
+import android.widget.SearchView
+
+class FocusSearchView: SearchView {
+  constructor(context: Context): super(context)
+  constructor(context: Context, attrs: AttributeSet?): super(context, attrs)
+  constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int): super(context, attrs, defStyleAttr)
+
+  var allowFocus = true
+
+  override fun dispatchKeyEventPreIme(event: KeyEvent): Boolean {
+    // Always clear focus on back press
+    return if (hasFocus() && event.keyCode == KeyEvent.KEYCODE_BACK) {
+      if (event.action == KeyEvent.ACTION_UP) {
+        clearFocus()
+      }
+      true
+    } else {
+      super.dispatchKeyEventPreIme(event)
+    }
+  }
+
+  override fun setIconified(iconify: Boolean) {
+    super.setIconified(iconify)
+
+    // Don't focus view and raise keyboard unless allowed
+    if (!iconify && !allowFocus) {
+      clearFocus()
+    }
+  }
+}