Update UnifiedSearchFragment.kt.

Commit id: 4fb3fb3 from branch bug/NMC-1652.

app/src/main/java/com/nmc/android/utils/KeyboardUtils.java

@@ -0,0 +1,21 @@
+package com.nmc.android.utils;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+
+public class KeyboardUtils {
+
+    public static void showSoftKeyboard(Context context, View view) {
+        view.requestFocus();
+        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
+        imm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
+    }
+
+    public static void hideKeyboardFrom(Context context, View view) {
+        view.clearFocus();
+        InputMethodManager imm = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
+        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
+    }
+}

app/src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.java

@@ -134,6 +134,7 @@
 import com.owncloud.android.utils.MimeTypeUtil;
 import com.owncloud.android.utils.PermissionUtil;
 import com.owncloud.android.utils.PushUtils;
+import com.nmc.android.utils.KeyboardUtils;
 import com.owncloud.android.utils.StringUtils;
 import com.owncloud.android.utils.theme.CapabilityUtils;
 
@@ -1056,6 +1057,8 @@ public void onBackPressed() {
             // pop back
             resetScrolling(true);
             hideSearchView(getCurrentDir());
+            //hide the keyboard on back press if showing
+            KeyboardUtils.hideKeyboardFrom(this, binding.getRoot());
             showSortListGroup(true);
             super.onBackPressed();
         }

app/src/main/java/com/owncloud/android/ui/fragment/UnifiedSearchFragment.kt

@@ -38,6 +38,7 @@ import com.nextcloud.client.account.CurrentAccountProvider
 import com.nextcloud.client.core.AsyncRunner
 import com.nextcloud.client.di.Injectable
 import com.nextcloud.client.di.ViewModelFactory
+import com.nmc.android.utils.KeyboardUtils
 import com.nextcloud.client.network.ClientFactory
 import com.owncloud.android.R
 import com.owncloud.android.databinding.ListFragmentBinding
@@ -192,6 +193,8 @@ class UnifiedSearchFragment : Fragment(), Injectable, UnifiedSearchListInterface
     private fun showFile(file: OCFile) {
         activity.let {
             if (activity is FileDisplayActivity) {
+                //NMC: hide keyboard when user taps on any file to view
+                KeyboardUtils.hideKeyboardFrom(requireContext(), binding.root)
                 val fda = activity as FileDisplayActivity
                 fda.file = file
                 fda.showFile("")
@@ -255,6 +258,7 @@ class UnifiedSearchFragment : Fragment(), Injectable, UnifiedSearchListInterface
     }
 
     override fun onQueryTextSubmit(query: String): Boolean {
+        KeyboardUtils.hideKeyboardFrom(requireContext(), binding.root)
         vm.setQuery(query)
         vm.initialQuery()
         return true