java为什么我创建的菜单没有新的用途

Question

我是安卓开发新手

我创建了一个菜单项，在单击时启动一个新活动（SettingsActivity）。我没有错误，一切正常，只是当我点击“创建”菜单时，它什么都不做

public boolean onCreateOptionsMenu(Menu menu){
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.visualizer_menu, menu);
        return true;
    }

 public boolean onOptionSelected(MenuItem item){
        int itemThatWasClicked = item.getItemId();

        if (itemThatWasClicked == R.id.action_settings){
            Intent settingsActivityIntent = new Intent(this, SettingsActivity.class);// using explicity intent to open new activity
            startActivity(settingsActivityIntent);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

我试过在onOptionSelected()中添加祝酒词，但没有效果。菜单不仅仅是回应

我的设置活动中有以下代码。目前的java

package 安卓.example.com.visualizerpreferences;

import 安卓.support.v4.app.NavUtils;
import 安卓.support.v7.app.ActionBar;
import 安卓.support.v7.app.AppCompatActivity;
import 安卓.os.Bundle;
import 安卓.view.MenuItem;

public class SettingsActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_settings);
        ActionBar actionBar = this.getSupportActionBar();

        if (actionBar != null){
            actionBar.setDisplayHomeAsUpEnabled(true);
        }
    }

    public boolean onOptionsItemSelected(MenuItem item){
        int id = item.getItemId();
        if(id == 安卓.R.id.home){
            NavUtils.navigateUpFromSameTask(this);
        }
        return super.onOptionsItemSelected(item);
    }

}

下面是我的可视化工具菜单。我的菜单资源文件中的xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
    xmlns:app="http://schemas.安卓.com/apk/res-auto">

    <item
        安卓:id="@+id/action_settings"
        安卓:title="@string/action_settings"
        安卓:orderInCategory="100"
        app:showAsAction="never"/>
</menu>

Answer 1

菜单项创建：

 @Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.game_menu, menu);
    return true;
}

单击侦听器：

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
    case R.id.new_game:
        newGame();
        return true;
    case R.id.help:
        showHelp();
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

Answer 2

替换你的

public boolean onOptionSelected(MenuItem item){

到

@Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {