利用属性动画实现优酷菜单，供大家参考，具体内容如下

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="fill_parent" ><RelativeLayout android:layout_width="280dip" android:layout_height="140dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:id="@+id/level3" android:background="@drawable/level3" > <ImageButton android:id="@+id/c1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="6dip" android:layout_marginLeft="12dip" android:background="@drawable/channel1" /> <ImageButton android:id="@+id/c2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@id/c1" android:layout_marginBottom="12dip" android:layout_marginLeft="28dip" android:background="@drawable/channel2" /> <ImageButton android:id="@+id/c3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@id/c2" android:layout_marginBottom="6dip" android:layout_marginLeft="8dip" android:layout_toRightOf="@id/c2" android:background="@drawable/channel3" /> <ImageButton android:id="@+id/c4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_margin="6dip" android:background="@drawable/channel4" /> <ImageButton android:id="@+id/c5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@+id/c6" android:layout_marginBottom="6dip" android:layout_marginRight="8dip" android:layout_toLeftOf="@+id/c6" android:background="@drawable/channel5" /> <ImageButton android:id="@+id/c6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@+id/c7" android:layout_marginBottom="12dip" android:layout_marginRight="28dip" android:layout_alignParentRight="true" android:background="@drawable/channel6" /> <ImageButton android:id="@+id/c7" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="6dip" android:layout_marginRight="12dip" android:layout_alignParentRight="true" android:background="@drawable/channel7" /></RelativeLayout><RelativeLayout android:layout_width="180dip" android:layout_height="90dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:id="@+id/level2" android:background="@drawable/level2" > <ImageButton android:id="@+id/search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_margin="10dip" android:background="@drawable/icon_search" /> <ImageButton android:id="@+id/menu" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_margin="6dip" android:background="@drawable/icon_menu" /> <ImageButton android:id="@+id/myyouku" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_margin="10dip" android:background="@drawable/icon_myyouku" /></RelativeLayout><RelativeLayout android:layout_width="100dip" android:layout_height="50dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:background="@drawable/level1" > <ImageButton android:id="@+id/home" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:background="@drawable/icon_home" /></RelativeLayout></RelativeLayout>

核心代码

package com.example.uumusic.menu;import android.content.Context;import android.view.View;import android.widget.ImageButton;import android.widget.RelativeLayout;import android.widget.Toast;import com.example.uumusic.R;import com.example.uumusic.fragment.base.BasePager;import com.example.uumusic.utils.Tools;import butterknife.ButterKnife;import butterknife.InjectView;/** * Created by Administrator on 2017.06.07.0007. */public class YoukuMenu extends BasePager {@InjectView(R.id.c1)ImageButton c1;@InjectView(R.id.c2)ImageButton c2;@InjectView(R.id.c3)ImageButton c3;@InjectView(R.id.c4)ImageButton c4;@InjectView(R.id.c5)ImageButton c5;@InjectView(R.id.c6)ImageButton c6;@InjectView(R.id.c7)ImageButton c7;@InjectView(R.id.level3)RelativeLayout level3;@InjectView(R.id.search)ImageButton search;@InjectView(R.id.menu)ImageButton menu;@InjectView(R.id.myyouku)ImageButton myyouku;@InjectView(R.id.level2)RelativeLayout level2;@InjectView(R.id.home)ImageButton home;private boolean isLeve12 = true;private boolean isLeve13 = true;public YoukuMenu(Context context) { super(context);}@Overridepublic View initView() { View view = View.inflate(mContext, R.layout.fragment_youku, null); ButterKnife.inject(this,view); return view;}@Overridepublic void initData() { //为按钮设置点击事件 home.setOnClickListener(new MyOnClickLisetner()); menu.setOnClickListener(new MyOnClickLisetner());}class MyOnClickLisetner implements View.OnClickListener{ @Override public void onClick(View v) { switch (v.getId()){ case R.id.home: //当点击home按钮时,开始进行动画的效果 if (isLeve12){ isLeve12 = false; Tools.hide(level2); if (isLeve13){ isLeve13 = false; Tools.hide(level3,200); } }else { isLeve12 = true; Tools.show(level2); } break; case R.id.menu: if (isLeve13){ isLeve13 = false; Tools.hide(level3); }else { isLeve13 = true; Tools.show(level3); } break; } }}}

动画工具类

package com.example.uumusic.utils;import android.animation.ObjectAnimator;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.view.animation.RotateAnimation;import android.widget.RelativeLayout;/** * Created by Administrator on 2017.06.07.0007. */public class Tools {//隐藏布局public static void hide(ViewGroup view) { hide(view, 0);}//显示布局public static void show(ViewGroup view) { //使用属性动画实现菜单的旋转 ObjectAnimator animator = ObjectAnimator.ofFloat(view,"rotation",180,360); //设置动画时长 animator.setDuration(300); animator.start(); view.setPivotX(view.getWidth()/2); view.setPivotY(view.getHeight());}//延迟隐藏public static void hide(ViewGroup view, int i) { ObjectAnimator animator = ObjectAnimator.ofFloat(view,"rotation",0,180); //设置动画时长 animator.setDuration(300); //设置延迟 animator.setStartDelay(i); animator.start(); view.setPivotX(view.getWidth()/2); view.setPivotY(view.getHeight());}}

源码：Android利用属性动画实现优酷菜单

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