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Material Design：

Material Design是Google推出的一个全新的设计语言，它的特点就是拟物扁平化。

我将Material Design分为例如以下四部分：

主题和布局——ANDROID L——Material Design具体解释（主题和布局）

视图和阴影——ANDROID L——Material Design具体解释（视图和阴影）

UI控件——ANDROID L——Material Design具体解释（UI控件）

动画——ANDROID L——Material Design具体解释（动画篇）

而以下这个样例就是之前上面所介所绍的一个综合应用，废话不多说直接看图：

Demo简单介绍：

左边的图：

1.RecyclerView，CardView

首先使用了Material Desgin新增的两个控件RecyclerView，CardView。

知识点參考：ANDROID L——RecyclerView,CardView导入和使用（Demo）

2. Floating Action Button & 视图阴影轮廓

这里和上篇文章不同的是我加了一个Floating Action Button（悬浮动作button）去控制CardView在RecyclerView中的加入和删除。

而且在蓝色的悬浮button上设置了阴影了轮廓（黑色背景不是非常清楚）

知识点參考：ANDROID L——Material Design具体解释（视图和阴影）

3. Reveal Effect

在点击蓝色button时会有一个缩小的动画是使用了Reveal effect动画

知识点參考：ANDROID L——Material Design具体解释（动画篇）

右面的图：

1. Activity transitions

在点击单个条目时会跳转到一个新的Acitivty，跳转时运行Activity transitions动画，大家会看到第二个Activity中的视图会有一个向中央扩展的效果（Explode）

2. Shared Elements Transition

在从第一个Activity跳转到第二个Activity时，会有一个共享元素的动画效果使图片和悬浮button在两个Activity跳转时移动（控件间距离有些近效果不是特别明显）

3. Reveal effect和动画监听

通过Reveal effect和动画监听实现类似“眨眼睛”的切换视图效果

1、2、3知识点參考：ANDROID L——Material Design具体解释（动画篇）

代码介绍：

主Activity——MyActivity：

public class MyActivity extends Activity {private RecyclerView mRecyclerView;private MyAdapter myAdapter;ImageButton button;Context context;public static List<Actor> actors = new ArrayList<Actor>();private static String[] names = {"朱茵", "张柏芝", "张敏", "莫文蔚", "黄圣依", "赵薇", "如花"};private static String[] pics = {"p1", "p2", "p3", "p4", "p5", "p6", "p7"};private static String[] works = {"大话西游", "喜剧之王", "p3", "p4", "p5", "p6", "p7"};private static String[] role = {"紫霞仙子", "柳飘飘", "p3", "p4", "p5", "p6", "p7"};private static String[][] picGroups = {{"p1","p1_1", "p1_2", "p1_3"},{"p2","p2_1", "p2_2", "p2_3"},{"p3"},{"p4"},{"p5"},{"p6"},{"p7"}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// set Explode enter transition animation for current activitygetWindow().requestFeature(Window.FEATURE_CONTENT_TRANSITIONS);getWindow().setEnterTransition(new Explode().setDuration(1000));setContentView(R.layout.main_layout);// init datathis.context = this;actors.add(new Actor(names[0], pics[0], works[0], role[0], picGroups[0]));getActionBar().setTitle("那些年我们追的星女郎");// init RecyclerViewmRecyclerView = (RecyclerView) findViewById(R.id.list);mRecyclerView.setLayoutManager(new LinearLayoutManager(this));mRecyclerView.setItemAnimator(new DefaultItemAnimator());// set adaptermyAdapter = new MyAdapter(this, actors);mRecyclerView.setAdapter(myAdapter);// set outline and listener for floating action buttonbutton = (ImageButton) this.findViewById(R.id.add_button);button.setOutlineProvider(new ViewOutlineProvider() {@Overridepublic void getOutline(View view, Outline outline) {int shapeSize = (int) getResources().getDimension(R.dimen.shape_size);outline.setRoundRect(0, 0, shapeSize, shapeSize, shapeSize / 2);}});button.setClipToOutline(true);button.setOnClickListener(new MyOnClickListener());}public class MyOnClickListener implements View.OnClickListener {boolean isAdd = true;@Overridepublic void onClick(View v) {// start animationAnimator animator = createAnimation(v);animator.start();// add itemif (myAdapter.getItemCount() != names.length && isAdd) {actors.add(new Actor(names[myAdapter.getItemCount()], pics[myAdapter.getItemCount()], works[myAdapter.getItemCount()], role[myAdapter.getItemCount()], picGroups[myAdapter.getItemCount()]));mRecyclerView.scrollToPosition(myAdapter.getItemCount() - 1);myAdapter.notifyDataSetChanged();}// delete itemelse {actors.remove(myAdapter.getItemCount() - 1);mRecyclerView.scrollToPosition(myAdapter.getItemCount() - 1);myAdapter.notifyDataSetChanged();}if (myAdapter.getItemCount() == 0) {button.setImageDrawable(getDrawable(android.R.drawable.ic_input_add));isAdd = true;}if (myAdapter.getItemCount() == names.length) {button.setImageDrawable(getDrawable(android.R.drawable.ic_delete));isAdd = false;}}}/*** start detail activity*/public void startActivity(final View v, final int position) {View pic = v.findViewById(R.id.pic);View add_btn = this.findViewById(R.id.add_button);// set share element transition animation for current activityTransition ts = new ChangeTransform();ts.setDuration(3000);getWindow().setExitTransition(ts);Bundle bundle = ActivityOptions.makeSceneTransitionAnimation((Activity) context,Pair.create(pic, position + "pic"),Pair.create(add_btn, "ShareBtn")).toBundle();// start activity with share element transitionIntent intent = new Intent(context, DetailActivity.class);intent.putExtra("pos", position);startActivity(intent, bundle);}/*** create CircularReveal animation*/public Animator createAnimation(View v) {// create a CircularReveal animationAnimator animator = ViewAnimationUtils.createCircularReveal(v,v.getWidth() / 2,v.getHeight() / 2,0,v.getWidth());animator.setInterpolator(new AccelerateDecelerateInterpolator());animator.setDuration(500);return animator;}}

第二个Activity——DetailActivity：

public class DetailActivity extends Activity {ImageView pic;int position;int picIndex = 0;Actor actor;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// set Explode enter transition animation for current activitygetWindow().requestFeature(Window.FEATURE_CONTENT_TRANSITIONS);getWindow().setEnterTransition(new Explode().setDuration(1000));getWindow().setExitTransition(null);setContentView(R.layout.detail_layout);position = getIntent().getIntExtra("pos", 0);actor = MyActivity.actors.get(position);pic = (ImageView) findViewById(R.id.detail_pic);TextView name = (TextView) findViewById(R.id.detail_name);TextView works = (TextView) findViewById(R.id.detail_works);TextView role = (TextView) findViewById(R.id.detail_role);ImageButton btn = (ImageButton) findViewById(R.id.detail_btn);// set detail infopic.setTransitionName(position + "pic");pic.setImageDrawable(getDrawable(actor.getImageResourceId(this)));name.setText("姓名：" + actor.name);works.setText("代表作：" + actor.works);role.setText("饰演：" + actor.role);// set action bar titlegetActionBar().setTitle(MyActivity.actors.get(position).name);// floating action buttonbtn.setImageDrawable(getDrawable(android.R.drawable.ic_menu_gallery));btn.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// set first animationAnimator animator = createAnimation(pic, true);animator.start();animator.addListener(new Animator.AnimatorListener() {@Overridepublic void onAnimationStart(Animator animation) {}@Overridepublic void onAnimationEnd(Animator animation) {picIndex++;if (actor.getPics() != null) {if (picIndex >= actor.getPics().length) {picIndex = 0;}// set second animationdoSecondAnim();}}@Overridepublic void onAnimationCancel(Animator animation) {}@Overridepublic void onAnimationRepeat(Animator animation) {}});}});}/*** exec second animation for pic view*/private void doSecondAnim() {pic.setImageDrawable(getDrawable(actor.getImageResourceId(this, actor.getPics()[picIndex])));Animator animator = createAnimation(pic, false);animator.start();}/*** create CircularReveal animation with first and second sequence*/public Animator createAnimation(View v, Boolean isFirst) {Animator animator;if (isFirst) {animator = ViewAnimationUtils.createCircularReveal(v,v.getWidth() / 2,v.getHeight() / 2,v.getWidth(),0);} else {animator = ViewAnimationUtils.createCircularReveal(v,v.getWidth() / 2,v.getHeight() / 2,0,v.getWidth());}animator.setInterpolator(new DecelerateInterpolator());animator.setDuration(500);return animator;}@Overridepublic void onBackPressed() {super.onBackPressed();pic.setImageDrawable(getDrawable(actor.getImageResourceId(this, actor.picName)));finishAfterTransition();}}

RecyclerView的Adapter：

public class MyAdapterextends RecyclerView.Adapter<MyAdapter.ViewHolder>
{private List<Actor> actors;private Context mContext;public MyAdapter( Context context , List<Actor> actors){this.mContext = context;this.actors = actors;}@Overridepublic ViewHolder onCreateViewHolder( ViewGroup viewGroup, int i ){View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_view, viewGroup, false);return new ViewHolder(v);}@Overridepublic void onBindViewHolder( ViewHolder viewHolder, int i ){Actor p = actors.get(i);viewHolder.mContext = mContext;viewHolder.mTextView.setText(p.name);viewHolder.mImageView.setImageDrawable(mContext.getDrawable(p.getImageResourceId(mContext)));}@Overridepublic int getItemCount(){return actors == null ? 0 : actors.size();}public static class ViewHolderextends RecyclerView.ViewHolder{public TextView mTextView;public ImageView mImageView;public Context mContext;public ViewHolder( View v ){super(v);mTextView = (TextView) v.findViewById(R.id.name);mImageView = (ImageView) v.findViewById(R.id.pic);v.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {((MyActivity)mContext).startActivity(v, getPosition());}});}}
}

剩余的Layout文件和一些烂七八糟的东西大家能够通过下方的Github连接找到。

Github下载地址：https://github.com/a396901990/AndroidDemo  (AndroidL_MaterialDesgin_Demo)

写在最后：

代码写的比較搓，仅仅为了高速完毕功能，非常多不规范的大家忽略好了。

而且代码中仅仅有一些简单的注解，并没有具体解说，由于我认为也没什么可讲的，当中内容都是我之前文章中样例的应用。

大家能够对比上面的Demo简单介绍中的知识点去对应的文章中寻找相关的具体信息。