Android 当我点击搜索输入字段时，SearchView 只短暂显示光标，不显示键盘。无法输入文字
Android SearchView only briefly displays cursor when I click on search input field, and no keyboard displays. Can't input text
我试图在布局内部而不是菜单布局中实现 SearchView，但是当我单击搜索输入框时，光标只是短暂显示，然后消失，并且键盘永远不会显示。看起来它可能正在失去焦点？一段时间以来，我一直在尝试以零运气解决这个问题。
代码如下。为清楚起见已进行编辑。
感谢任何想法或建议。
带有 SearchView 的布局
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="blocksDescendants"
tools:context=".MainActivity">
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:iconifiedByDefault="false"
app:actionViewClass="androidx.appcompat.widget.SearchView"
app:showAsAction="always|collapseActionView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.163"
app:queryHint="Search Here" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_slidermenu"
android:layout_width="313dp"
android:layout_height="362dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/searchView"
app:layout_constraintVertical_bias="0.32" />
</androidx.constraintlayout.widget.ConstraintLayout>
activity_main
<?xml version="1.0" encoding="utf-8"?>
<!--the root view must be the DrawerLayout-->
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:ignore="HardcodedText">
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants"
tools:context=".MainActivity">
</androidx.constraintlayout.widget.ConstraintLayout>
<!--this the navigation view which draws
and shows the navigation drawer-->
<!--include the menu created in the menu folder-->
<!--app:menu="@menu/navigation_menu" this goes in nav view if needed-->
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="350dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:fitsSystemWindows="true"
android:clickable="true"
>
<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/some_id_if_needed"
layout="@layout/nav_choose_foods" />
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>
主要活动
public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter_AllFoods.ItemClickListener, RecyclerViewAdapter_Search.ItemClickListener, RecyclerViewAdapter_Nutrients.ItemClickListener, RecyclerViewAdapter_FoodTotals.ItemClickListener{
public DrawerLayout drawerLayout;
public ActionBarDrawerToggle actionBarDrawerToggle;
SearchView searchView;
//JSONObject finalSums = new JSONObject();
static RecyclerViewAdapter_AllFoods adapter;
static RecyclerViewAdapter_Nutrients adapter_nutrients;
static RecyclerViewAdapter_FoodTotals adapter_foodtotals;
static RecyclerViewAdapter_Search searchList_Recycler_Adapter;
@RequiresApi(api = Build.VERSION_CODES.O)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Objects.requireNonNull(getSupportActionBar()).setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.custom_toolbar);
ActionBar action = getSupportActionBar();
action.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
Toolbar toolbar=(Toolbar)action.getCustomView().getParent();
toolbar.setContentInsetsAbsolute(0, 0);
toolbar.getContentInsetEnd();
toolbar.setPadding(0, 0, 0, 0);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
drawerLayout = findViewById(R.id.my_drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.nav_open, R.string.nav_close);
//list = (ListView) findViewById(R.id.list_slidermenu);
// pass the Open and Close toggle for the drawer layout listener
// to toggle the button
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
// to make the Navigation drawer icon always appear on the action bar
//runProgram();
// data to populate the RecyclerView with
RecyclerView recyclerView = findViewById(R.id.list_slidermenu);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
searchList_Recycler_Adapter = new RecyclerViewAdapter_Search(this, LoadData.vegListJSON);
searchList_Recycler_Adapter.setClickListener(this);
recyclerView.setAdapter(searchList_Recycler_Adapter);
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
searchView=(SearchView) findViewById(R.id.searchView);
searchView.setFocusable(true);// searchView is null
searchView.setFocusableInTouchMode(true);
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
// set up the RecyclerView
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
好吧，我刚刚弄明白了。是“android:descendantFocusability="blocksDescendants" 这行把事情搞砸了。不知道我是怎么错过的。
我试图在布局内部而不是菜单布局中实现 SearchView，但是当我单击搜索输入框时，光标只是短暂显示，然后消失，并且键盘永远不会显示。看起来它可能正在失去焦点？一段时间以来，我一直在尝试以零运气解决这个问题。
代码如下。为清楚起见已进行编辑。
感谢任何想法或建议。
带有 SearchView 的布局
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="blocksDescendants"
tools:context=".MainActivity">
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:iconifiedByDefault="false"
app:actionViewClass="androidx.appcompat.widget.SearchView"
app:showAsAction="always|collapseActionView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.163"
app:queryHint="Search Here" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_slidermenu"
android:layout_width="313dp"
android:layout_height="362dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/searchView"
app:layout_constraintVertical_bias="0.32" />
</androidx.constraintlayout.widget.ConstraintLayout>
activity_main
<?xml version="1.0" encoding="utf-8"?>
<!--the root view must be the DrawerLayout-->
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:ignore="HardcodedText">
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants"
tools:context=".MainActivity">
</androidx.constraintlayout.widget.ConstraintLayout>
<!--this the navigation view which draws
and shows the navigation drawer-->
<!--include the menu created in the menu folder-->
<!--app:menu="@menu/navigation_menu" this goes in nav view if needed-->
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="350dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:fitsSystemWindows="true"
android:clickable="true"
>
<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/some_id_if_needed"
layout="@layout/nav_choose_foods" />
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>
主要活动
public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter_AllFoods.ItemClickListener, RecyclerViewAdapter_Search.ItemClickListener, RecyclerViewAdapter_Nutrients.ItemClickListener, RecyclerViewAdapter_FoodTotals.ItemClickListener{
public DrawerLayout drawerLayout;
public ActionBarDrawerToggle actionBarDrawerToggle;
SearchView searchView;
//JSONObject finalSums = new JSONObject();
static RecyclerViewAdapter_AllFoods adapter;
static RecyclerViewAdapter_Nutrients adapter_nutrients;
static RecyclerViewAdapter_FoodTotals adapter_foodtotals;
static RecyclerViewAdapter_Search searchList_Recycler_Adapter;
@RequiresApi(api = Build.VERSION_CODES.O)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Objects.requireNonNull(getSupportActionBar()).setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.custom_toolbar);
ActionBar action = getSupportActionBar();
action.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
Toolbar toolbar=(Toolbar)action.getCustomView().getParent();
toolbar.setContentInsetsAbsolute(0, 0);
toolbar.getContentInsetEnd();
toolbar.setPadding(0, 0, 0, 0);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
drawerLayout = findViewById(R.id.my_drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.nav_open, R.string.nav_close);
//list = (ListView) findViewById(R.id.list_slidermenu);
// pass the Open and Close toggle for the drawer layout listener
// to toggle the button
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
// to make the Navigation drawer icon always appear on the action bar
//runProgram();
// data to populate the RecyclerView with
RecyclerView recyclerView = findViewById(R.id.list_slidermenu);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
searchList_Recycler_Adapter = new RecyclerViewAdapter_Search(this, LoadData.vegListJSON);
searchList_Recycler_Adapter.setClickListener(this);
recyclerView.setAdapter(searchList_Recycler_Adapter);
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
searchView=(SearchView) findViewById(R.id.searchView);
searchView.setFocusable(true);// searchView is null
searchView.setFocusableInTouchMode(true);
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
// set up the RecyclerView
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
好吧，我刚刚弄明白了。是“android:descendantFocusability="blocksDescendants" 这行把事情搞砸了。不知道我是怎么错过的。