Question

我希望我的导航抽屉在加载应用程序时被禁用，如果用户执行某些特定任务，则会启用它。

简而言之，有一种方法可以禁用导航抽屉的切换按钮，并根据用户操作再次启用它。

编辑：我已将我的活动更新如下;

public class MainActivity extends Activity
    implements NavigationDrawerFragment.NavigationDrawerCallbacks {

    private NavigationDrawerFragment mNavigationDrawerFragment;

    private CharSequence mTitle;

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

        mNavigationDrawerFragment = (NavigationDrawerFragment)
                getFragmentManager().findFragmentById(R.id.navigation_drawer);
        mTitle = getTitle();

        // Set up the drawer.
        DrawerLayout navigationDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mNavigationDrawerFragment.setUp(
                R.id.navigation_drawer,
                navigationDrawerLayout);

        navigationDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
    }
}

    @Override
    public boolean onOptionsItemSelected(android.view.MenuItem item) {
        if (item.getItemId() == android.R.id.home) {

        }
        return super.onOptionsItemSelected(item);
    }
    ...
}

但是当应用程序启动时，我可以打开导航抽屉，这是我不想要的

Answer 1

您只需使用DrawerLayout DrawerLayout方法锁定和解锁setDrawerLockMode()。

因此，要将DrawerLayout锁定在关闭模式，请使用：

drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);

如果您希望将其锁定在开放模式，请使用drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_OPEN);

最后，当您要解锁DrawerLayout时，请使用：

drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);

Answer 2

write condtion in onoptionsitemselected and block it


@Override
    public boolean onOptionsItemSelected(android.view.MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
if(yourconditionsatisfied)
{
            if (mDrawerLayout.isDrawerOpen(mDrawerLinearLayout)) {
                mDrawerLayout.closeDrawer(mDrawerLinearLayout);
            } else {
                mDrawerLayout.openDrawer(mDrawerLinearLayout);
            }
    }
        }
        return super.onOptionsItemSelected(item);
    }

启动时禁用导航抽屉

2 个答案: