将提交按钮添加到SearchView

<LinearLayout
    ...
    android:orientation="horizontal">

    <SearchView
        ...
        android:id="@+id/searchView" />

    <Button
        ...
        android:id="@+id/submitButton"
        android:text="提交" />

</LinearLayout>

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

submitButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        String keyword = searchView.getQuery().toString();
        // 执行搜索操作
        performSearch(keyword);
    }
});