Оформяне на SearchView в лентата за действие на Android

Ще трябва да зададете

searchView.setBackgroundColor(Color.WHITE);

SearchViews не са толкова адаптивни.

Прекарвах много време за това, но накрая: :-)

1. За да промените цвета на текста:

((EditText)searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text)).setTextColor(Color.WHITE);

или този за AndroidX:

((EditText)searchView.findViewById(androidx.appcompat.R.id.search_src_text)).setTextColor(Color.WHITE);

2. За да промените текстовата подсказка:

((EditText)searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text)).setHintTextColor(Color.WHITE);

или този за AndroidX:

((EditText)searchView.findViewById(androidx.appcompat.R.id.search_src_text)).setHintTextColor(Color.WHITE);

Ако използвате библиотека appcompat, тогава решението е малко по-различно от отговора на Jerome. Ето моето решение

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
    getMenuInflater().inflate(R.menu.main_menu, menu);
    restoreActionBar();

    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    MenuItem searchMenuItem = menu.findItem(R.id.action_search);
    SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchMenuItem);
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

    SearchView.SearchAutoComplete searchAutoComplete = (SearchView.SearchAutoComplete)searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);
    searchAutoComplete.setHintTextColor(Color.WHITE);
    searchAutoComplete.setTextColor(Color.WHITE);

    View searchplate = (View)searchView.findViewById(android.support.v7.appcompat.R.id.search_plate);
    searchplate.setBackgroundResource(R.drawable.texfield_searchview_holo_light);

    ImageView searchCloseIcon = (ImageView)searchView.findViewById(android.support.v7.appcompat.R.id.search_close_btn);
    searchCloseIcon.setImageResource(R.drawable.clear_search);

    ImageView voiceIcon = (ImageView)searchView.findViewById(android.support.v7.appcompat.R.id.search_voice_btn);
    voiceIcon.setImageResource(R.drawable.abc_ic_voice_search);

    ImageView searchIcon = (ImageView)searchView.findViewById(android.support.v7.appcompat.R.id.search_mag_icon);
    searchIcon.setImageResource(R.drawable.abc_ic_search);


    return super.onCreateOptionsMenu(menu);
}

Можете да промените стила на изгледа за търсене. Ето някакъв код, който използвах, за да променя текста за редактиране, иконата на гласа...

SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);

        SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();
        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

        int searchPlateId = searchView.getContext().getResources().getIdentifier("android:id/search_plate", null, null);
        searchView.findViewById(searchPlateId).setBackgroundResource(R.drawable.textfield_search_selected);

        int voiceSearchPlateId = searchView.getContext().getResources().getIdentifier("android:id/submit_area", null, null);
        searchView.findViewById(voiceSearchPlateId).setBackgroundResource(R.drawable.textfield_search_right_selected);

        // change hint color
        int searchTextViewId = searchView.getContext().getResources().getIdentifier("android:id/search_src_text", null, null);
        TextView searchTextView = (TextView) searchView.findViewById(searchTextViewId);
        searchTextView.setHintTextColor(getResources().getColor(R.color.light_grey));

[редактиране] По-пълен отговор е достъпен тук: Промяна изчертаването на фона на приспособлението searchview

От Lollipop можете да стилизирате изгледа за търсене като този от публикация в блог http://android-developers.blogspot.com/2014/10/appcompat-v21-material-design-for-pre.html

values/themes.xml:
<style name=”Theme.MyTheme” parent=”Theme.AppCompat”>
    <item name=”searchViewStyle”>@style/MySearchViewStyle</item>
</style>
<style name=”MySearchViewStyle” parent=”Widget.AppCompat.SearchView”>
    <!-- Background for the search query section (e.g. EditText) -->
    <item name="queryBackground">...</item>
    <!-- Background for the actions section (e.g. voice, submit) -->
    <item name="submitBackground">...</item>
    <!-- Close button icon -->
    <item name="closeIcon">...</item>
    <!-- Search button icon -->
    <item name="searchIcon">...</item>
    <!-- Go/commit button icon -->
    <item name="goIcon">...</item>
    <!-- Voice search button icon -->
    <item name="voiceIcon">...</item>
    <!-- Commit icon shown in the query suggestion row -->
    <item name="commitIcon">...</item>
    <!-- Layout for query suggestion rows -->
    <item name="suggestionRowLayout">...</item>
</style>

Начинът, по който реших това, беше с помощта на темата Holo.Light.DarkActionBar. Не вярвам, че можете лесно да промените джаджата за търсене по друг начин.

Ако искате бял текст, трябва да се разширите от тема на лентата за действие, която има черен фон като Holo.Theme или Theme.AppCompat.Light.DarkActionBar, ако използвате библиотеката за поддръжка.
Не са необходими други настройки.

@Override
    public boolean onCreateOptionsMenu(Menu menu) {

        super.onCreateOptionsMenu(menu);

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);

        // Associate search configuration with the SearchView
        SearchManager searchManager =
               (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        SearchView searchView =
                (SearchView) menu.findItem(R.id.search).getActionView();
        searchView.setQueryHint("Client/DOB/PPSN");
        searchView.setSearchableInfo(
                searchManager.getSearchableInfo(getComponentName()));

        // Setting the textview default behaviour properties
        int id = searchView.getContext().getResources().getIdentifier("android:id/search_src_text", null, null);
        TextView textView = (TextView) searchView.findViewById(id);
        textView.setTextColor(Color.WHITE);
        textView.setHintTextColor(Color.WHITE);

        // Set the search plate color to white
        int linlayId = getResources().getIdentifier("android:id/search_plate", null, null);
        View view = searchView.findViewById(linlayId);
        Drawable drawColor = getResources().getDrawable(R.drawable.searchcolor);
        view.setBackground( drawColor );
        return super.onCreateOptionsMenu(menu);

    }

Сега това е xml файлът searchcolor.xml за промяна на цвета на табелата на лентата за търсене

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
  <item>
      <shape >
          <solid android:color="#ffffff" />
      </shape>
  </item>

  <!-- main color -->
  <item android:bottom="1.5dp"
      android:left="1.5dp"
      android:right="1.5dp">
      <shape >
          <solid android:color="#2c4d8e" />
      </shape>
  </item>

  <!-- draw another block to cut-off the left and right bars -->
  <item android:bottom="10.0dp">
      <shape >
          <solid android:color="#2c4d8e" />
      </shape>
  </item>
</layer-list>

и menu/menu.xml за създаване на търсене в лентата с действия

<menu xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:id="@+id/search"
          android:icon="@drawable/search"
          android:showAsAction="ifRoom"
          android:actionViewClass="android.widget.SearchView" />

</menu>

Вземете SearchView във вашия файл xxxActivity.java и след това:

SearchView searchView = (SearchView)menu.findItem(R.id.my_search_view).getActionView();
int searchPlateId = searchView.getContext().getResources().getIdentifier("android:id/search_plate", null, null);

// Getting the 'search_plate' LinearLayout.
View searchPlate = searchView.findViewById(searchPlateId);
searchPlate.setBackgroundResource(R.drawable.textfield_searchview);

Създаване на файл res/drawable/texfield_searchview.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true"
        android:drawable="@drawable/textfield_search_selected_holo_light" />
    <item android:drawable="@drawable/textfield_search_default_holo_light" />
</selector>