DrawerLayout的使用

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DrawerLayout 是v4的扩展组件，具体使用步骤如下：
1、布局文件内容如下：

<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/drawer_layout"    android:layout_width="match_parent"    android:layout_height="match_parent">    <!--主布局-->    <RelativeLayout        android:id="@+id/content"        android:layout_width="match_parent"        android:layout_height="match_parent">    </RelativeLayout>    <!--左侧滑动菜单-->    <RelativeLayout        android:id="@+id/drawer_left_menu"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_gravity="start">    </RelativeLayout></android.support.v4.widget.DrawerLayout>

注：android:layout_gravity="start" 这个属性是必须的。

2、初始化DrawerLayout组件

    DrawerLayout mDrawerLayout;    RelativeLayout mDrawerLeftMenu;    ActionBarDrawerToggle mDrawerToggle;    private void setupDrawerLayout() {        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);        mDrawerLeftMenu = (RelativeLayout) findViewById(R.id.drawer_left_menu);        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_close) {            @Override            public void onDrawerClosed(View view) {                super.onDrawerClosed(view);            }            @Override            public void onDrawerOpened(View drawerView) {                super.onDrawerOpened(drawerView);            }            @Override            public void onDrawerSlide(View drawerView, float slideOffset) {                super.onDrawerSlide(drawerView, slideOffset);            }            @Override            public void onDrawerStateChanged(int newState) {                super.onDrawerStateChanged(newState);            }        };        mDrawerLayout.setDrawerListener(mDrawerToggle);        mDrawerToggle.syncState();    }

3、在Activity的onCreate(Bundle savedInstanceState)方法中调用

    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        setupDrawerLayout();    }

4、想打开或者关闭左侧菜单的调用下面的方法

 public void toggleLeftMenu() {        if (mDrawerLayout.isDrawerOpen(mDrawerLeftMenu)) {            mDrawerLayout.closeDrawer(mDrawerLeftMenu);        } else {            mDrawerLayout.openDrawer(mDrawerLeftMenu);        } }

5、关闭手势滑动

 public void closeDrawerGestureSlide() {      mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED); }

6、打开手势滑动

 public void openDrawerGestureSlide() {      mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED); }

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