Question

我的视图中有两个导航抽屉。当右侧抽屉打开时，我想锁定左侧抽屉，当左侧抽屉打开时，我想锁定右侧抽屉。

目前，当（例如）左边的一个打开，你从右边滑动以关闭它时，右边的抽屉开始打开，然后左边的一个完全关闭。这不是理想的行为。

这是我尝试过的内容，但是当我刷抽屉时，我得到NullPointerException。

// Left Drawer Config
_leftDrawerToggler = new DrawerToggler(this,
                                       _rootViewLayout,
                                       Resource.Drawable.ic_drawer_light,
                                       Resource.String.drawer_open,
                                       Resource.String.drawer_close);

_leftDrawerToggler.DrawerClosed += delegate
    {
        InvalidateOptionsMenu();
        _rootViewLayout.SetDrawerLockMode(DrawerLayout.LockModeUnlocked, _rightDrawerLayout);
    };

_leftDrawerToggler.DrawerOpened += delegate
{
    _leftDrawerList.SetItemChecked(0, true);
    InvalidateOptionsMenu();
    _rootViewLayout.SetDrawerLockMode(DrawerLayout.LockModeLockedClosed, _rightDrawerLayout);
};

_rootViewLayout.SetDrawerShadow(Resource.Drawable.drawer_shadow_dark, (int)GravityFlags.Left);
_rootViewLayout.SetDrawerListener(_leftDrawerToggler);



// Right Drawer Config
_rightDrawerToggler = new DrawerToggler(this,
                                       _rootViewLayout,
                                       Resource.Drawable.ic_drawer_light,
                                       Resource.String.drawer_open,
                                       Resource.String.drawer_close);

_rightDrawerToggler.DrawerClosed += delegate
    {
        InvalidateOptionsMenu();
        _rootViewLayout.SetDrawerLockMode(DrawerLayout.LockModeUnlocked, _leftDrawerLayout);
    };
_rightDrawerToggler.DrawerOpened += delegate
{
    _rightDrawerList.SetItemChecked(0, true);
    InvalidateOptionsMenu();
    _rootViewLayout.SetDrawerLockMode(DrawerLayout.LockModeLockedClosed, _leftDrawerLayout);
};

_rootViewLayout.SetDrawerShadow(Resource.Drawable.right_drawer_shadow_dark, (int)GravityFlags.Right);
_rootViewLayout.SetDrawerListener(_rightDrawerToggler);

Answer 1

问题是你没有锁定正确的 VieW。另一个问题是，Listener只需要一个DrawerLayout。从你的代码我可以理解你有两个DrawerLayout

的听众

您的Layout XML应该有DrawerLayout，其中ListView layout_gravity对于ListView start应为end。{ {1}}）

当Drawer opened检查View Object是否相等View.equal()时，请锁定另一个ListView' and when the 'Drawer closed解锁另一个ListView。

像这样改变你的代码

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

    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mLeftDrawerList = (ListView) findViewById(R.id.left_drawer);
    mRightDrawerList = (ListView) findViewById(R.id.right_drawer);

    mDrawerToggle = new ActionBarDrawerToggle(this,
            mDrawerLayout,R.drawable.ic_drawer,
            R.string.drawer_open,R.string.drawer_close)
    {
        public void onDrawerOpened(View view){
            if(view.equals(mRightDrawerList)) {
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mLeftDrawerList);
            }
            else {
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, mRightDrawerList);
            }
            invalidateOptionsMenu();
        }

        public void onDrawerClosed(View view)
        {
            if(view.equals(mRightDrawerList)) {
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, mLeftDrawerList);
            }
            else {
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, mRightDrawerList);
            }
            invalidateOptionsMenu();
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);
}

这应该有效。如果您发现任何问题，请与我们联系。

如何在另一个打开时打开导航抽屉

1 个答案: