android - 自定义操作栏菜单项一键不响应

Question

我为菜单项创建了自定义布局。现在我需要它在单击时加载新 Activity 。代码逻辑如下:

资源中的菜单声明:

<item android:id="@+id/shoppingCart"
    android:title="cart"
    android:background="@layout/basket_notification_counter"
    android:icon="@drawable/ic_add_shopping_cart_white_24dp"
    app:showAsAction="always" />

Activity 由各个选项卡下的 fragment 组成。根据我在 SO 上收集到的信息，我需要在 fragment 内的 onCreateView 方法中调用 setHasOptionsMenu(true);，我已经这样做了。

现在在activity里面，2个主要的重要方法，分别是onCreateOptionsMenu和onOptionsItemSelected，如下:

package project.activities;

//... Imports come here


public class SalesActivity extends ActionBarActivity
{
    private final static String TAG = "PROJECT";

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

        // Setup the action bar
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                showActionBar();
            }
        });
    }

    /**
     * Creates menus found the action bar
     *
     * @param menu the menu to work on
     * @return true
     */

    @Override
    public boolean onCreateOptionsMenu(final Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_sale, menu);

        final MenuItem item = menu.findItem(R.id.shopping_cart);
        // THIS IS THE PROBLEM
        // This workd but erratcally. After a number of clicks, it loads the activity specified in onOptionsItemSelected
        // This is random: sometimes one click, sometimes 2 or up to 7 clicks so far.
        item.getActionView().setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                menu.performIdentifierAction(item.getItemId(), 0);
            }
        });

        /**
         // Also tried this but didn't work. Didn't also throw an exception to tell something was wrong
        item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                LoggedInActivity.this.showCart();
                return true;
            }
        });
        */

        return true;
    }

    /**
     * Handles menus in lists
     *
     * @param item  the selected item
     * @return the selected item
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        int id = item.getItemId();
        switch (id) {
            case R.id.shopping_cart:
                Intent intent = new Intent(LoggedInActivity.this, CheckOutActivity.class);
                startActivity(intent);
                return true;
            case R.id.action_settings:
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    /**
     * When the screen is rotated, this method is called
     *
     * @param newConfig the new app configuration
     */
    @Override
    public void onConfigurationChanged(Configuration newConfig)
    {
        super.onConfigurationChanged(newConfig);
    }

    /**
     * Recreates an item in cases where the app is pushed to the background
     *
     * @param savedInstanceState the bundle
     */
    @Override
    protected void onPostCreate(Bundle savedInstanceState)
    {
        super.onPostCreate(savedInstanceState);
    }

    /**
     * Handles the action bar
     */
    public void showActionBar()
    {
        // Initialize the action bar
        ActionBar actionBar = getSupportActionBar();
        //actionBar.setElevation(0);

        // Set up tabs
        showActionBarTabs(actionBar);
    }

    /**
     * Setup the actionbar tabs
     * @param actionBar the actionBar we get from the activity and style
     */
    public void showActionBarTabs(final ActionBar actionBar)
    {
        //... I set up the actionbar tabs here
    }
}

问题如下:单击操作栏中的菜单项时，它相当“随机”地工作。有时，它会在单击一次后工作，有时它会加载 Activity 4 次或 3 次单击。没有1次点击的一致性。似乎是什么问题？

Answer 1

请试试这个

onCreateOptionsMenu(menu: Menu, inflater: MenuInflater)

方法

Kotlin

inflater.inflate(R.menu.my_menu, menu)
menu.findItem(R.id.my_custom_item).actionView.setOnClickListener {
            println("КЛИК")
        }

Java

inflater.inflate(R.menu.my_menu, menu)
findItem(R.id.my_custom_item).getActionView().setOnClickListener(v -> System.out.println("click");

对我有用