<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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">  <CheckBox    android:id="@+id/cbDelay"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_marginLeft="10dp"    android:layout_marginTop="10dp"    android:text="delay" />  <RelativeLayout    android:id="@+id/rlAddBill"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_alignParentStart="true"    android:layout_below="@+id/fab01Add"    android:layout_marginLeft="10dp"    android:background="#00000000"    android:visibility="gone">    <LinearLayout      android:id="@+id/ll01"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_alignParentStart="true"      android:layout_below="@+id/ll02"      android:orientation="horizontal">      <TextView        android:layout_width="0dp"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:layout_toLeftOf="@+id/miniFab01"        android:layout_weight="1"        android:gravity="right"        android:paddingBottom="5dp"        android:text="銷售單"        android:textColor="@android:color/white"        android:textSize="15sp"        android:visibility="gone" />      <android.support.design.widget.FloatingActionButton        android:id="@+id/miniFab01"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginRight="25dp"        android:src="@mipmap/btn_play_normal"        app:backgroundTint="@color/colorAccent"        app:elevation="5dp"        app:fabSize="mini" />    </LinearLayout>    <LinearLayout      android:id="@+id/ll02"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_alignParentStart="true"      android:layout_below="@+id/ll03"      android:orientation="horizontal">      <TextView        android:layout_width="0dp"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:layout_toLeftOf="@+id/miniFab02"        android:layout_weight="1"        android:gravity="right"        android:paddingBottom="5dp"        android:text="銷售退貨"        android:textColor="@android:color/white"        android:textSize="15sp"        android:visibility="gone" />      <android.support.design.widget.FloatingActionButton        android:id="@+id/miniFab02"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginRight="25dp"        android:src="@mipmap/btn_play_normal"        app:backgroundTint="@color/colorAccent"        app:elevation="5dp"        app:fabSize="mini" />    </LinearLayout>    <LinearLayout      android:id="@+id/ll03"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_alignParentStart="true"      android:layout_alignParentTop="true"      android:orientation="horizontal">      <TextView        android:layout_width="0dp"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:layout_toLeftOf="@+id/miniFab02"        android:layout_weight="1"        android:gravity="right"        android:paddingBottom="5dp"        android:text="收款單"        android:textColor="@android:color/white"        android:textSize="15sp"        android:visibility="gone" />      <android.support.design.widget.FloatingActionButton        android:id="@+id/miniFab03"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginRight="25dp"        android:src="@mipmap/btn_play_normal"        app:backgroundTint="@color/colorAccent"        app:elevation="5dp"        app:fabSize="mini" />    </LinearLayout>  </RelativeLayout>  <android.support.design.widget.FloatingActionButton    android:id="@+id/fab01Add"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_alignParentStart="true"    android:layout_below="@+id/cbDelay"    android:layout_marginRight="15dp"    android:layout_marginTop="22dp"    android:src="@mipmap/btn_play_normal"    app:backgroundTint="#31bfcf"    app:elevation="5dp"    app:fabSize="normal"    app:rippleColor="#e7d161" /></RelativeLayout>

package com.example.liupanpan.floatingactionbuttondemo;import android.animation.AnimatorInflater;import android.animation.AnimatorSet;import android.os.Bundle;import android.support.design.widget.FloatingActionButton;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.CheckBox;import android.widget.LinearLayout;import android.widget.RelativeLayout;public class MainActivity extends AppCompatActivity implements View.OnClickListener {  private CheckBox cbDelay;  private FloatingActionButton fab01Add;  private boolean isAdd = false;  private RelativeLayout rlAddBill;  private int[] llId = new int[]{R.id.ll01, R.id.ll02, R.id.ll03};  private LinearLayout[] ll = new LinearLayout[llId.length];  private int[] fabId = new int[]{R.id.miniFab01, R.id.miniFab02, R.id.miniFab03};  private FloatingActionButton[] fab = new FloatingActionButton[fabId.length];  private AnimatorSet addBillTranslate1;  private AnimatorSet addBillTranslate2;  private AnimatorSet addBillTranslate3;  private AnimatorSet addBillTranslate4;  private AnimatorSet addBillTranslate5;  private AnimatorSet addBillTranslate6;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.basic_fab_activity);    initView();    setDefaultValues();    bindEvents();  }  private void initView() {    cbDelay = (CheckBox) findViewById(R.id.cbDelay);    fab01Add = (FloatingActionButton) findViewById(R.id.fab01Add);    rlAddBill = (RelativeLayout) findViewById(R.id.rlAddBill);    for (int i = 0; i < llId.length; i++) {      ll[i] = (LinearLayout) findViewById(llId[i]);    }    for (int i = 0; i < fabId.length; i++) {      fab[i] = (FloatingActionButton) findViewById(fabId[i]);    }  }  private void setDefaultValues() {    addBillTranslate1 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);    addBillTranslate2 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);    addBillTranslate3 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);//    addBillTranslate4 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);//    addBillTranslate5 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);//    addBillTranslate6 = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.add_bill_anim);  }  private void bindEvents() {    fab01Add.setOnClickListener(this);    for (int i = 0; i < fabId.length; i++) {      fab[i].setOnClickListener(this);    }  }  @Override  public void onClick(View v) {    switch (v.getId()) {      case R.id.fab01Add:        fab01Add.setImageResource(isAdd ? R.mipmap.ic_launcher_round : R.mipmap.ic_launcher_round);        isAdd = !isAdd;        rlAddBill.setVisibility(isAdd ? View.VISIBLE : View.GONE);        if (isAdd) {          addBillTranslate1.setTarget(ll[0]);          addBillTranslate1.start();          addBillTranslate2.setTarget(ll[1]);          addBillTranslate2.setStartDelay(cbDelay.isChecked() ? 50 : 0);          addBillTranslate2.start();          addBillTranslate3.setTarget(ll[2]);          addBillTranslate3.setStartDelay(cbDelay.isChecked() ? 100 : 0);          addBillTranslate3.start();//          addBillTranslate4.setTarget(ll[3]);//          addBillTranslate4.setStartDelay(cbDelay.isChecked() ? 250 : 0);//          addBillTranslate4.start();//          addBillTranslate5.setTarget(ll[4]);//          addBillTranslate5.setStartDelay(cbDelay.isChecked() ? 300 : 0);//          addBillTranslate5.start();//          addBillTranslate6.setTarget(ll[5]);//          addBillTranslate6.setStartDelay(cbDelay.isChecked() ? 350 : 0);//          addBillTranslate6.start();        }        break;      case R.id.miniFab01:        hideFABMenu();        break;      case R.id.miniFab02:        hideFABMenu();        break;      case R.id.miniFab03:        hideFABMenu();        break;      default:        break;    }  }  private void hideFABMenu() {    rlAddBill.setVisibility(View.GONE);    fab01Add.setImageResource(R.mipmap.ic_launcher_round);    isAdd = false;  }}