http://developer.android.com/training/implementing-navigation/nav-drawer.html
	 
	여기에 있는 예제 가지고 와서 해보고 있는데요.
	아래와 같은에러가 나네요 흠...
	 
	예제에서 바꾼게 없는데.. 안되네요.
	 
	05-29 01:34:42.458: E/AndroidRuntime(30694): FATAL EXCEPTION: main
	05-29 01:34:42.458: E/AndroidRuntime(30694): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.navifinal/com.example.navifinal.MainActivity}: java.lang.IllegalArgumentException: View android.widget.ListView@41b25f20 is not a sliding drawer
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread.access$700(ActivityThread.java:140)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.os.Handler.dispatchMessage(Handler.java:99)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.os.Looper.loop(Looper.java:137)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread.main(ActivityThread.java:4921)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at java.lang.reflect.Method.invokeNative(Native Method)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at java.lang.reflect.Method.invoke(Method.java:511)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at dalvik.system.NativeStart.main(Native Method)
	05-29 01:34:42.458: E/AndroidRuntime(30694): Caused by: java.lang.IllegalArgumentException: View android.widget.ListView@41b25f20 is not a sliding drawer
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.support.v4.widget.DrawerLayout.closeDrawer(DrawerLayout.java:1013)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at com.example.navifinal.MainActivity.selectItem(MainActivity.java:188)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at com.example.navifinal.MainActivity.onCreate(MainActivity.java:122)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.Activity.performCreate(Activity.java:5206)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
	05-29 01:34:42.458: E/AndroidRuntime(30694):  ... 11 more