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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分为如下四部分：
主题和布局——ANDROID L——Material Design详解（主题和布局）
视图和阴影——ANDROID L——Material Design详解（视图和阴影）
UI控件——ANDROID L——Material Design详解（UI控件）
动画——ANDROID L——Material Design详解（动画篇）
而下面这个例子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简介：
左边的图：
1.RecyclerView，CardView
首先使用了Material Desgin新增的两个控件RecyclerView，CardView。
知识点参考：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（悬浮动作按钮）去控制CardView在RecyclerView中的添加和删除。
并且在蓝色的悬浮按钮上设置了阴影了轮廓（黑色背景不是很清楚）
知识点参考：ANDROID L——Material Design详解（视图和阴影）
3. Reveal Effect
在点击蓝色按钮时会有一个缩小的动画是使用了Reveal effect动画
知识点参考：ANDROID L——Material Design详解（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，跳转时执行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按钮在两个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知识点参考：ANDROID L——Material Design详解（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 actors = new ArrayList();
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"}};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set Explode enter transition animation for current activity
getWindow().requestFeature(Window.FEATURE_CONTENT_TRANSITIONS);
getWindow().setEnterTransition(new Explode().setDuration(1000));
setContentView(R.layout.main_layout);
// init data
this.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 RecyclerView
mRecyclerView = (RecyclerView) findViewById(R.id.list);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
// set adapter
myAdapter = new MyAdapter(this, actors);
mRecyclerView.setAdapter(myAdapter);
// set outline and listener for floating action button
button = (ImageButton) this.findViewById(R.id.add_button);
button.setOutlineProvider(new ViewOutlineProvider() {
@Override
public 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;
@Override
public void onClick(View v) {
// start animation
Animator animator = createAnimation(v);
animator.start();
// add item
if (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 item
else {
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 activity
Transition 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 transition
Intent intent = new Intent(context, DetailActivity.class);
intent.putExtra("pos", position);
startActivity(intent, bundle);
}
/**
* create CircularReveal animation
*/
public Animator createAnimation(View v) {
// create a CircularReveal animation
Animator 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;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set Explode enter transition animation for current activity
getWindow().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 info
pic.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 title
getActionBar().setTitle(MyActivity.actors.get(position).name);
// floating action button
btn.setImageDrawable(getDrawable(android.R.drawable.ic_menu_gallery));
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// set first animation
Animator animator = createAnimation(pic, true);
animator.start();
animator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
picIndex++;
if (actor.getPics() != null) {
if (picIndex >= actor.getPics().length) {
picIndex = 0;
}
// set second animation
doSecondAnim();
}
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public 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;
}
@Override
public void onBackPressed() {
super.onBackPressed();
pic.setImageDrawable(getDrawable(actor.getImageResourceId(this, actor.picName)));
finishAfterTransition();
}
}RecyclerView的Adapter：
public class MyAdapter
extends RecyclerView.Adapter
{
private List actors;
private Context mContext;
public MyAdapter( Context context , List actors)
{
this.mContext = context;
this.actors = actors;
}
@Override
public ViewHolder onCreateViewHolder( ViewGroup viewGroup, int i )
{
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_view, viewGroup, false);
return new ViewHolder(v);
}
@Override
public 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)));
}
@Override
public int getItemCount()
{
return actors == null ? 0 : actors.size();
}
public static class ViewHolder
extends 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() {
@Override
public void onClick(View v) {
((MyActivity)mContext).startActivity(v, getPosition());
}
});
}
}
} Github下载地址：https://github.com/a396901990/AndroidDemo (AndroidL_MaterialDesgin_Demo)
写在最后：
代码写的比较搓，只为了快速完成功能，很多不规范的大家忽略好了。
并且代码中只有一些简单的注解，并没有详细讲解，因为我觉得也没什么可讲的，其中内容都是我之前文章中例子的应用。
大家可以对照上面的Demo简介中的知识点去相应的文章中寻找相关的详细信息。