小编eli*_*996的帖子

我尝试通过我的代码显示键盘，因为 closeListener 和 onExpandListener 不起作用。我在哪里失败了？当用户按下工具栏的后退按钮时可以调用一个方法吗？

后工具栏按钮的图像 --> https://i.stack.imgur.com/hDZlu.jpg

这是我的java代码；具有搜索视图的类：

public class MainActivity extends ActionBarActivity {

SearchView searchView = null;


@Override
protected void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);
    super.onCreate(savedInstanceState);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

    //Title and subtitle
    toolbar.setTitle("Magazzino Chimica");

    setSupportActionBar(toolbar);

    Intent intent = getIntent();
}

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

    // Associate searchable configuration with the SearchView
    final SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    searchView = (SearchView) menu.findItem(R.id.action_search)
            .getActionView();
    searchView.setSearchableInfo(searchManager
            .getSearchableInfo(getComponentName()));

    searchView.setIconifiedByDefault(false);

    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) { …