Android使用CoordinatorLayout实现底部弹出菜单

compile "com.android.support:design:${project.properties.get("support")}"

<android.support.design.widget.CoordinatorLayout   xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:background="#04827c">  <RelativeLayout    android:layout_width="match_parent"    android:layout_height="match_parent">    //页面布局    </RelativeLayout>  <include //引入菜单布局    android:id="@+id/au_bottom_sheet"    layout="@layout/view_audio_list"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:focusable="true"    app:behavior_hideable="true"    app:behavior_peekHeight="0dp"    app:layout_behavior="@string/bottom_sheet_behavior" /></android.support.design.widget.CoordinatorLayout>

//找到BottomSheetBehaviorBottomSheetBehavior behavior = BottomSheetBehavior.from(findViewById(R.id.au_bottom_sheet));//设置弹出高度 behavior.setPeekHeight(WindowHeight / 2); //默认隐藏 behavior.setState(BottomSheetBehavior.STATE_HIDDEN); //添加消失监听 behavior.setBottomSheetCallback(bottomSheetCallback);

 //状态监听，通过这个监听菜单是否消失  private BottomSheetBehavior.BottomSheetCallback bottomSheetCallback = new BottomSheetBehavior.BottomSheetCallback() {    @Override    public void onStateChanged(@NonNull View bottomSheet, int newState) {      if (newState == BottomSheetBehavior.STATE_HIDDEN) {        if (!isBehaviorShowing(behavior)) {          //菜单已经消失        }      }    }    @Override    public void onSlide(@NonNull View bottomSheet, float slideOffset) {    //滑动监听    }  };

 private Boolean isBehaviorShowing(BottomSheetBehavior behavior) {    return behavior.getState() == BottomSheetBehavior.STATE_COLLAPSED        || behavior.getState() == BottomSheetBehavior.STATE_EXPANDED        || behavior.getState() == BottomSheetBehavior.STATE_SETTLING;  }

behavior.setState(BottomSheetBehavior.STATE_HIDDEN);

 behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);