CoordinatorLayout

在Gradle里加入   compile 'com.android.support:design:22.2.1'

实现效果：点击button关闭下方

//layout

<?xml version="1.0" encoding="utf-8"?>
<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.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="end|bottom"
        android:layout_margin="16dp"
        android:src="@mipmap/ic_launcher" />

</android.support.design.widget.CoordinatorLayout>

//Activity

package com.example.liangshaoteng.myapplication;

import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.fab).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                Snackbar.make(view, "FAB", Snackbar.LENGTH_INDEFINITE).setAction("cancel", new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        //这里的单击事件代表点击消除Action后的响应事件

                    }
                }).show();
            }
        });
    }
}