Android5.0 旋转菜单实例详解

先给大家展示下效果图:

这个效果是安卓5.0推出 “材料设计” ui效果 以前一直没留意到,写篇文章当成备忘录

上面的效果图 用 drawerlayout和toolbar实现

布局如下

<?xml version="1.0" encoding="utf-8"?>
<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:background="#fff0ff"
  android:orientation="vertical"
  tools:context="a.fmy.com.myapplication.mainactivity">
<!--标题栏-->
  <android.support.v7.widget.toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?attr/colorprimary"
    android:minheight="?attr/actionbarsize" />
  <android.support.v4.widget.drawerlayout
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#0ff"
   >
    <!--内容-->
    <linearlayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="#ff0"></linearlayout>
    <!--菜单-->
    <linearlayout
      android:layout_width="200dp"
      android:layout_height="match_parent"
      android:layout_gravity="start"
      android:background="#f0f" />
  </android.support.v4.widget.drawerlayout>
</linearlayout>

activity 代码

public class mainactivity extends appcompatactivity {
  private toolbar toobar;
  private actionbardrawertoggle actionbardrawertoggle;
  private drawerlayout drawerlayout;
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    toobar = (toolbar) findviewbyid(r.id.toolbar);
    //设置toobar为标题栏
    setsupportactionbar(toobar);
    //设置显示旋转菜单
    getsupportactionbar().setdisplayhomeasupenabled(true);
    //抽屉布局
    drawerlayout = ((drawerlayout) findviewbyid(r.id.activity_main));
    //activitybar开关
    actionbardrawertoggle = new actionbardrawertoggle(this, drawerlayout, r.string.app_name, r.string.app_name);
    //同步开关 如果不写的话, 滑动开关 按钮一直就一个状态 不会变化
    actionbardrawertoggle.syncstate();
    //添加监听
    drawerlayout.adddrawerlistener(actionbardrawertoggle);
  }
  @override
  public boolean onoptionsitemselected(menuitem item) {
    //这里是让用户点击按钮的时候可以打开抽屉
    return actionbardrawertoggle.onoptionsitemselected(item)
        || super.onoptionsitemselected(item);
  }
}