<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_main_layout"
    tools:context="com.example.drawerlayout.MainActivity">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <Button
            android:id="@+id/btn_main_right"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="OpenRightMenu"
            android:text="打開"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true" />

    </RelativeLayout>

    <fragment
        android:id="@+id/id_left_menu"
        android:name="com.example.drawerlayout.fragment.LeftFragment"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="left"
        android:tag="Left" />

    <fragment
        android:id="@+id/id_right_menu"
        android:name="com.example.drawerlayout.fragment.RightFragment"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        android:tag="RIGHT" />
</android.support.v4.widget.DrawerLayout>

public class MainActivity extends AppCompatActivity {private DrawerLayout mDrawerLayout;
    private Button mButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initViews();
        setListeners();
    }private void initViews() {mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_main_layout);
        mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED,
                Gravity.RIGHT);
        mButton = (Button) findViewById(R.id.btn_main_right);
    }private void setListeners() {mButton.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View view) {mDrawerLayout.openDrawer(Gravity.RIGHT);
                mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED,
                        Gravity.RIGHT);
            }});
        mDrawerLayout.setDrawerListener(new DrawerLayout.SimpleDrawerListener() {//在這個方法里可以設置動畫效果
            @Override
            public void onDrawerSlide(View drawerView, float slideOffset) {}// 菜單打開
            @Override
            public void onDrawerOpened(View drawerView) {}// 菜單關閉
            @Override
            public void onDrawerClosed(View drawerView) {mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, Gravity.RIGHT);
            }@Override
            public void onDrawerStateChanged(int newState) {}});
    }}