如何检测导航抽屉是否打开？

标题解释了这一切。 所有我想要做的是知道抽屉是否打开。 我在网上search了很多，发现方法isDrawerOpen(int drawerGravity)但找不到满意的答案，解释如何在一个方法中使用它。 如果有人向我解释，我将不胜感激。

提前致谢！

Answer 1

假设你已经在xml中定义了一个drawerlayout：

 DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); ... if(mDrawerLayout.isDrawerOpen(GravityCompat.START)) { //drawer is open } 

Answer 2

  mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerToggle = new ActionBarDrawerToggle( this, /* host Activity */ mDrawerLayout, /* DrawerLayout object */ R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */ R.string.drawer_open, /* "open drawer" description */ R.string.drawer_close /* "close drawer" description */ ) { /** Called when a drawer has settled in a completely closed state. */ public void onDrawerClosed(View view) { super.onDrawerClosed(view); getActionBar().setTitle(mTitle); } /** Called when a drawer has settled in a completely open state. */ public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); getActionBar().setTitle(mDrawerTitle); } }; // Set the drawer toggle as the DrawerListener mDrawerLayout.setDrawerListener(mDrawerToggle); 

那听众使用:)

Answer 3

使用：

mDrawerLayout.isDrawerOpen（）方法

例：

  if(mDrawerLayout.isDrawerOpen(GravityCompat.START)) { mDrawerLayout.closeDrawer(Gravity.LEFT); //CLOSE Nav Drawer! }else{ mDrawerLayout.openDrawer(Gravity.LEFT); //OPEN Nav Drawer! } 

Answer 4

shakeJ的答案是正确的，并记住你可以使用onDrawerSlide能够触发其他function…例如我用它来改变StatusBar的颜色。

  /** Called when a drawer has settled in a completely closed state. */ public void onDrawerClosed(View view) { super.onDrawerClosed(view); isopen = false; } /** Called when a drawer has settled in a completely open state. */ public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); isopen = true; } public void onDrawerSlide(View drawerView,float slideOffset){ super.onDrawerSlide(drawerView,slideOffset); if(!isopen){ setStatusBarColor("#00102b"); } if(isopen){ setStatusBarColor("#EFEFF0"); } }