MainActivity.java
 toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        dlDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        dtToggle = new ActionBarDrawerToggle(this, dlDrawer, R.string.app_name, R.string.app_name);
        dlDrawer.setDrawerListener(dtToggle);
	activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <include layout="@layout/toolbar"/>
    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">
        <FrameLayout
            android:id="@+id/container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#fff"/>
        <View
            android:id="@+id/drawer"
            android:layout_width="240dp"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:background="#fff" />
    </android.support.v4.widget.DrawerLayout>
</LinearLayout>
toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary">
</android.support.v7.widget.Toolbar>
	style.xml
<resources>
    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
        <!-- Customize your theme here. -->
    </style>
</resources>
	build.gradle
	 
	compileSdkVersion 21
	buildToolsVersion "21.1.2"
	 
	
		minSdkVersion 15
	
		targetSdkVersion 21
	
		versionCode 1
	
		versionName "1.0"
	
		 
	
		
			dependencies {
		
			    compile fileTree(include: ['*.jar'], dir: 'libs')
		
			    compile 'com.android.support:support-v4:22.0.0'
		
			    compile 'com.android.support:appcompat-v7:22.0.0'
		
			}
	 
 
	현재 이런식으로 구현이 되어있는데요. 적용이 안돼네요..
	개발환경은 안드로이드 스튜디오입니다.
	뭐가 잘못된건가요?