导航抽屉菜单项 setChecked 不起作用

Question

我使用 Android 支持设计库中的 NavigationDrawer 创建了 BaseActivity。

public abstract class BaseActivity extends ActionBarActivity {  

final static int MENUITEMS = 5;

private Toolbar toolbar;                              // Declaring the Toolbar Object

NavigationView navigationView;
private DrawerLayout drawerLayout;

Context basecontext;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(getLayoutId());

/* Assinging the toolbar object ot the view
and setting the the Action bar to our toolbar
 */
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    //Initializing NavigationView

    //Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

        // This method will trigger on item Click of navigation menu
        @Override
        public boolean onNavigationItemSelected(MenuItem menuItem) {


            //Checking if the item is in checked state or not, if not make it in checked state
            if (menuItem.isChecked()) {
                menuItem.setChecked(false);

            } else {
                menuItem.setChecked(true);
                switch (menuItem.getItemId()) {


                    //Replacing the main content with ContentFragment Which is our Inbox View;
                    case R.id.menu_start:
                        Toast.makeText(getApplicationContext(), "Noch nicht implementiert", Toast.LENGTH_SHORT).show();
                        Intent intent = new Intent(BaseActivity.this, Start.class);
                        startActivity(intent);
                        // For rest of the options we just show a toast on click
                        //TODO

                    case R.id.menu_all_entries:
                        Toast.makeText(getApplicationContext(), "Noch nicht implementiert", Toast.LENGTH_SHORT).show();
                    case R.id.menu_missed_entries:
                        Toast.makeText(getApplicationContext(), "Noch nicht implementiert", Toast.LENGTH_SHORT).show();
                    case R.id.menu_diagram:
                        Toast.makeText(getApplicationContext(), "Noch nicht implementiert", Toast.LENGTH_SHORT).show();
                    case R.id.menu_export:
                        Toast.makeText(getApplicationContext(), "Noch nicht implementiert", Toast.LENGTH_SHORT).show();
                    default:
                        Toast.makeText(getApplicationContext(), "Somethings Wrong", Toast.LENGTH_SHORT).show();

                }
            }

            //Closing drawer on item click
            drawerLayout.closeDrawers();
            //String localClassName = getLocalClassName();
            //Check to see which item was being clicked and perform appropriate action
            return true;

        }
    });

这很好用。

现在我有一个“子”活动（没有任何东西表示为菜单项）。

在这个活动中：

public class AddEntryPage1 extends BaseActivity {


@Override
protected int getLayoutId(){
    return R.layout.activity_add_entry_page1;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ButterKnife.bind(this);
    for(int i=0;i<MENUITEMS;i++){
        navigationView.getMenu().getItem(0).setChecked(false);
    }
}
}

我尝试将所有菜单项设置为未选中，但没有任何反应。

当我评估表达式时

navigationView.getMenu().getItem(0).isChecked()

它总是正确的（之前和之后 for-loop/getItem(0).setChecked(false)) .

我对此也没有错误。

好像我没有写权限？ 我用选定的项目启动了我的抽屉.xml 是否有问题？当我单击其他菜单项时，所选项目按预期更改。 还是 checkableBehavior="single" 意味着必须检查一项？

<group android:checkableBehavior="single">

    <item
        android:id="@+id/menu_start"
        android:checked="true"
        android:icon="@drawable/ic_action_home"
        android:title="Start" />

    <item
        android:id="@+id/menu_all_entries"
        android:checked="false"
        android:icon="@drawable/ic_action_view_list"
        android:title="Alle Einträge" />

    <item
        android:id="@+id/menu_missed_entries"
        android:checked="false"
        android:icon="@drawable/ic_action_view_list"
        android:title="Verpasste Einträge" />

    <item
        android:id="@+id/menu_diagram"
        android:checked="false"
        android:icon="@drawable/ic_editor_insert_chart"
        android:title="Diagramm" />


    <item
        android:id="@+id/menu_export"
        android:checked="false"
        android:icon="@drawable/ic_social_share"
        android:title="Export" />

</group>

感谢您帮助我！

Answer 1

对于可能遇到相同问题的任何人：

我向 Google 报告了该问题： https://code.google.com/p/android/issues/detail?id=184089

Answer 2

//The click listner for ListView in the navigation drawer
private class DrawerItemClickListener implements ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
         // update selected item and title, then close the drawer
        mDrawerList.setItemChecked(position, true);
        mDrawerList.setSelection(position);
    }
}

Answer 3

我找到原因了：

奇怪

navigationView.getMenu().getItem(1).setChecked(false);

激活/检查条目

和

.setChecked(true) 

还激活/检查它。

有人可以复制吗？这可能是一个错误吗？

Answer 4

怎么样：

尝试删除：

 android:checked="false"

如果有帮助，我的代码是：

 navigationView = binding.navigationView;
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(MenuItem menuItem) {
            drawerLayout.closeDrawers();
            int itemId = menuItem.getItemId();
            navigationView.getMenu().findItem(R.id.drawer_5_reasons).setChecked(true);
            return true;
        }
    });