<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".CardInfoActivity">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
            <ImageView
                android:id="@+id/card_info_image"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:transitionName="card_info_image"
                tools:srcCompat="@tools:sample/avatars" />
            <TextView
                android:id="@+id/card_info_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:text="TextView"
                android:textSize="30sp" />
        </LinearLayout>
    </ScrollView>
</LinearLayout>

//這個(gè)activity是用來展示對(duì)應(yīng)card信息的activity
public class CardInfoActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_card_info);
        //獲取傳遞來的信息
        ImageView card_info_image=(ImageView) findViewById(R.id.card_info_image);
        TextView card_info_title=(TextView) findViewById(R.id.card_info_title);
        Intent intent=getIntent();
        Bundle bundle=intent.getExtras();
        card_info_image.setImageResource(bundle.getInt("cardImageId"));
        card_info_title.setText(bundle.getString("cardTitle"));
        //修改圖片的高度
        ViewGroup.LayoutParams params = card_info_image.getLayoutParams();
        //TODO 顯然，這高度是由這個(gè)參數(shù)決定的，如果我們知道了寬的大小width，那么我們就能知道實(shí)際縮放比
        //獲取屏幕的寬度
        int screenWidth = ScreenUtil.getScreenWidth(this);
        //Log.d("height",String.valueOf(screenWidth));
        //調(diào)整放入圖片的大小，保證寬一定是屏幕的一半，高度隨著縮放而改變
        float scale = (float)bundle.getInt("height") / (float)bundle.getInt("width");
        params.height =  (int) (screenWidth * scale)+200;
        card_info_image.setLayoutParams(params);
    }
}

//設(shè)置Myadapter的Item監(jiān)聽
        myadapter.setOnRecyclerItemClickListener(new OnRecyclerItemClickListener() {
            @Override
            public void onItemClick(int Position, List<Myadapter.Card> cards) {
                /* 跳轉(zhuǎn)至另一個(gè)activity */
                Intent intent=new Intent(getActivity(),CardInfoActivity.class);
                //傳遞相應(yīng)的參數(shù)
                //我們需要把構(gòu)成一個(gè)圖片的信息傳遞過去
                Bundle bundle=new Bundle();
                bundle.putInt("cardImageId",cards.get(Position).getImageId());
                bundle.putString("cardTitle",cards.get(Position).getTitle());
                bundle.putInt("height",cards.get(Position).getHeight());
                bundle.putInt("width",cards.get(Position).getWidth());
                intent.putExtras(bundle);
                //啟用共享組件的activity過渡
                //所選擇的共享元件，這個(gè)元件是當(dāng)前頁面的元件
                //獲取item的ViewHolder
                Log.d("myposition-firstPo", Arrays.toString(firstStaggeredGridPosition));
                Log.d("myposition-actPo", String.valueOf(Position));
                Log.d("myposition-lastPo", Arrays.toString(lastStaggeredGridPosition));
                //因?yàn)槲沂褂玫氖荢taggeredGridLayoutManager
                RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
                //由于瀑布流是兩列，這里是為了獲得處在頁面的最小值
                int realFirstPosition=Math.min(firstStaggeredGridPosition[0],firstStaggeredGridPosition[1]);
                Myadapter.MyViewHolder viewHolder=(Myadapter.MyViewHolder)recyclerView.getChildViewHolder(recyclerView.getChildAt(Position-realFirstPosition));
                ImageView card_info_image= viewHolder.inserimage;
                ActivityOptions options = ActivityOptions.makeSceneTransitionAnimation(getActivity(),
                        Pair.create(card_info_image, "card_info_image"));
                startActivity(intent,options.toBundle());
            }
        });

//自定義監(jiān)聽接口
interface OnRecyclerItemClickListener {
    //RecyclerView的點(diǎn)擊事件，將信息回調(diào)給view
    void onItemClick(int Position, List<Myadapter.Card> datas);
}