SearchView小部件-以任何方式在其中选择所有文本？

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

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

searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) {
            searchView.setQuery("", false);
            searchView.setIconified(false);
            searchView.requestFocusFromTouch();
            searchView.setQuery(searchView.getQuery(), true);
        }
    }
});