在平时开发中,带有抽屉效果的App,应该还是挺多,今天就来看看这个效果是如何实现的,我们用DrawerLayout控件来实现! 运行效果图: DrawerLayout的官方文档介绍链接:http://androiddoc./reference/android/support/v4/widget/DrawerLayout.html DrawerLayout 类的结构图如下: 官方中文简介大概如下: DrawerLayout作为窗口内容的顶层容器,允许从窗口的一个或两个垂直边缘拉出交互式“抽屉”视图。 抽屉定位和布局使用android:layout_gravity 子视图对应的属性进行控制,对应于您希望抽屉从哪个侧面出现:左侧或右侧(或支持布局方向的平台版本上的开始/结束)。请注意,您只能窗口的每个垂直边缘的一个抽屉视图。如果您的布局在窗口的每个垂直边缘配置多个抽屉视图,则会在运行时抛出异常。 一般使用 DrawerLayout 侧滑菜单,可以通过 Toolbar + DrawerLayout来实现。 在res/layout 中,新建一个toolbar.xml文件 <?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.Toolbar xmlns:android="http://schemas./apk/res/android" xmlns:app="http://schemas./apk/res-auto" android:id="@+id/tl_custom" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="?attr/colorPrimary" android:minHeight="?attr/actionBarSize" android:popupTheme="@style/ThemeOverlay.AppCompat.Dark" app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> </android.support.v7.widget.Toolbar>在新建一个drawerlayout.xml布局 <?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas./apk/res/android" android:id="@+id/dl_left" android:layout_width="match_parent" android:layout_height="match_parent"> <!--主布局--> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent"> </LinearLayout> <!--侧滑菜单--> <RelativeLayout android:layout_width="180dp" android:clickable="true" android:layout_height="match_parent" android:layout_gravity="left" android:background="#fff" >
<LinearLayout android:id="@+id/ll_home_navigation_top" android:layout_width="match_parent" android:layout_height="120dp" android:layout_alignParentTop="true" android:background="@color/colorPrimary" android:gravity="center" android:orientation="vertical">
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:src="@mipmap/ic_launcher" /> </LinearLayout>
<ListView android:id="@+id/lv_left_menu" android:layout_below="@id/ll_home_navigation_top" android:layout_width="match_parent" android:layout_height="match_parent" android:divider="@null" android:text="DrawerLayout" /> </RelativeLayout> </android.support.v4.widget.DrawerLayout>主布局activity_main.xml: <LinearLayout xmlns:android="http://schemas./apk/res/android" xmlns:tools="http://schemas./tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> <!--Toolbar--> <include layout="@layout/toolbar" /> <!--DrawerLayout--> <include layout="@layout/drawerlayout" /> </LinearLayout>MainActivity.java: public class MainActivity extends AppCompatActivity { protected boolean statusBarCompat = true; private static long DOUBLE_CLICK_TIME = 0L; //声明相关变量 private Toolbar toolbar; private DrawerLayout mDrawerLayout; private ActionBarDrawerToggle mDrawerToggle; private ListView lvLeftMenu; private String[] lvs = {"Android", "iOS", "Python", "Html5", "Java"}; private ArrayAdapter arrayAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (statusBarCompat) { StatusBarCompat.compat(this, ContextCompat.getColor(this, R.color.colorPrimary)); transparent19and20(); }
findByIdViews(); //获取控件
toolbar.setTitle("Drawerlayout");//设置标题 toolbar.setTitleTextColor(Color.parseColor("#ffffff")); //设置标题颜色 setSupportActionBar(toolbar); getSupportActionBar().setHomeButtonEnabled(true); //设置返回键可用 getSupportActionBar().setDisplayHomeAsUpEnabled(true); //创建返回键,并实现打开关/闭监听 mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.open, R.string.close) { @Override public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); } @Override public void onDrawerClosed(View drawerView) { super.onDrawerClosed(drawerView); } }; mDrawerToggle.syncState(); mDrawerLayout.addDrawerListener(mDrawerToggle); //设置菜单列表 arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, lvs); lvLeftMenu.setAdapter(arrayAdapter);
lvLeftMenu.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(MainActivity.this, "点击"+position , Toast.LENGTH_SHORT).show(); } });
} //返回键监听 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (event.getKeyCode() == KeyEvent.KEYCODE_MENU && mDrawerLayout != null) { if (mDrawerLayout.isDrawerOpen(Gravity.LEFT)) { mDrawerLayout.closeDrawer(Gravity.LEFT); } else { mDrawerLayout.openDrawer(Gravity.LEFT); } return true; } else if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) { if (mDrawerLayout.isDrawerOpen(Gravity.LEFT)) { mDrawerLayout.closeDrawer(Gravity.LEFT); } else { if ((System.currentTimeMillis() - DOUBLE_CLICK_TIME) > 2000) { Toast.makeText(MainActivity.this, "再按一次退出", Toast.LENGTH_SHORT).show(); DOUBLE_CLICK_TIME = System.currentTimeMillis(); } else { finish(); } } return true; } return super.onKeyDown(keyCode, event); } protected void transparent19and20() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } } private void findByIdViews() { toolbar = (Toolbar) findViewById(R.id.tl_custom); mDrawerLayout = (DrawerLayout) findViewById(R.id.dl_left); lvLeftMenu = (ListView) findViewById(R.id.lv_left_menu); } }
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