Android SearchView Implementation Guide

SearchView is a widget used to add search functionality in Android applications. It includes an editable text box for entering search keywords and can be used in conjunction with a search button.

With SearchView, you can easily implement search functionality, including search filters, search suggestions, search history, and more. You can add SearchView to the ActionBar, Toolbar, or any position in the layout.

Here are the general steps for using SearchView:

1. 在XML布局文件中声明SearchView控件：

<SearchView
    android:id="@+id/searchView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

1. Obtain a reference to the SearchView control in an Activity or Fragment:

SearchView searchView = findViewById(R.id.searchView);

1. Set up a listener for the SearchView to perform corresponding actions when events such as entering text and submitting a search occur.

searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextSubmit(String query) {
        // 处理搜索提交事件
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        // 处理搜索文本变化事件
        return false;
    }
});

1. Optionally, you can configure some properties of the SearchView, such as hint text, icons, and more.

searchView.setQueryHint("Search...");
searchView.setIconifiedByDefault(false);

By following these steps, you can easily implement search functionality in your Android application and perform operations such as search filtering and suggestions based on user input.