這兩天研究畫廊效果簿晓，在github 上發(fā)現(xiàn)一個還不錯的開源項目，集成了一下材原，下面來看下效果

1514724610614mz22.gif

下面看下集成過程
首先在build.gradle中導入相應的依賴包

compile 'com.github.moondroid.coverflow:library:1.0'

新建一個GameEntity實體類

public class GameEntity {
    public int imageResId;
    public int titleResId;
    public GameEntity (int imageResId, int titleResId){
        this.imageResId = imageResId;
        this.titleResId = titleResId;
    }
}

適配器類

package com.coverflow;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

/**
 * 作者： chengcheng
 * 時間： 17/12/29- 上午10:10
 * 描述：
 */

public class CoverFlowAdapter extends BaseAdapter {

    private ArrayList<GameEntity> mData = new ArrayList<>(0);
    private Context mContext;

    public CoverFlowAdapter(Context context) {
        mContext = context;
    }

    public void setData(ArrayList<GameEntity> data) {
        mData = data;
    }

    @Override
    public int getCount() {
        return mData.size();
    }

    @Override
    public Object getItem(int pos) {
        return mData.get(pos);
    }

    @Override
    public long getItemId(int pos) {
        return pos;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        View rowView = convertView;

        if (rowView == null) {
            LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            rowView = inflater.inflate(R.layout.item_coverflow, null);

            ViewHolder viewHolder = new ViewHolder();
            viewHolder.text = (TextView) rowView.findViewById(R.id.label);
            viewHolder.image = (ImageView) rowView.findViewById(R.id.image);
            rowView.setTag(viewHolder);
        }

        ViewHolder holder = (ViewHolder) rowView.getTag();

        holder.image.setImageResource(mData.get(position).imageResId);
        holder.text.setText(mData.get(position).titleResId);
        holder.image.setTag(mData.get(position));

        return rowView;
    }


    static class ViewHolder {
        public TextView text;
        public ImageView image;
    }
}

MainActivity類吻育，在這個類里面處理數(shù)據(jù)

package com.coverflow;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewSwitcher;

import java.util.ArrayList;

import it.moondroid.coverflow.components.ui.containers.FeatureCoverFlow;

public class MainActivity extends AppCompatActivity {

    private CoverFlowAdapter mAdapter;
    private ArrayList<GameEntity> mData = new ArrayList<>(0);
    private TextSwitcher mTitle;
    private FeatureCoverFlow mCoverFlow;
    private TextView mTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTextView = (TextView) findViewById(R.id.jump);
        mTitle = (TextSwitcher) findViewById(R.id.title);
        mCoverFlow = (FeatureCoverFlow) findViewById(R.id.coverflow);
        initData();
        setOtherClick();
    }

    private void initData() {
        mData.add(new GameEntity(R.drawable.image_1, R.string.title1));
        mData.add(new GameEntity(R.drawable.image_2, R.string.title2));
        mData.add(new GameEntity(R.drawable.image_3, R.string.title3));
        mData.add(new GameEntity(R.drawable.image_4, R.string.title4));
        mData.add(new GameEntity(R.drawable.image_5, R.string.title5));
        mData.add(new GameEntity(R.drawable.image_6, R.string.title6));
        mData.add(new GameEntity(R.drawable.image_7, R.string.title7));
        mData.add(new GameEntity(R.drawable.image_8, R.string.title8));
        mData.add(new GameEntity(R.drawable.image_9, R.string.title9));

        mAdapter = new CoverFlowAdapter(this);
        mAdapter.setData(mData);
        mCoverFlow.setAdapter(mAdapter);
        setCoverFlowOnItemClick();
    }

    private void setCoverFlowOnItemClick() {
        mCoverFlow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                ImageView imageView = view.findViewById(R.id.image);
                if (imageView != null) {
                    GameEntity entity = (GameEntity) imageView.getTag();
                    Toast.makeText(MainActivity.this, entity.titleResId, Toast.LENGTH_SHORT).show();
                }
            }
        });

        mCoverFlow.setOnScrollPositionListener(new FeatureCoverFlow.OnScrollPositionListener() {
            @Override
            public void onScrolledToPosition(int position) {
                mTitle.setText(getResources().getString(mData.get(position).titleResId));
            }

            @Override
            public void onScrolling() {
                mTitle.setText("");
            }
        });
    }

    private void setOtherClick() {
        mTitle.setFactory(new ViewSwitcher.ViewFactory() {
            @Override
            public View makeView() {
                LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
                TextView textView = (TextView) inflater.inflate(R.layout.item_title, null);
                return textView;
            }
        });
        mTextView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                startActivity(intent);
            }
        });
    }


}

activity_main.xml 界面布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:coverflow="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.coverflow.MainActivity">

  
    <it.moondroid.coverflow.components.ui.containers.FeatureCoverFlow
        android:id="@+id/coverflow"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        coverflow:coverHeight="@dimen/cover_height"
        coverflow:coverWidth="@dimen/cover_width"
        coverflow:maxScaleFactor="1.6"
        coverflow:reflectionGap="0px"
        coverflow:reflectionHeight="0.5"
        coverflow:rotationThreshold="0.5"
        coverflow:scalingThreshold="0.5"
        coverflow:spacing="0.5"
        />

    <TextSwitcher
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerVertical="true"
        android:paddingBottom="26dp"/>

    <TextView
        android:id="@+id/jump"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:gravity="center"
        android:padding="12dp"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="15sp"
        android:text="跳轉"/>

</RelativeLayout>

item_coverflow.xml 適配器布局

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:tools="http://schemas.android.com/tools"
             android:layout_width="@dimen/cover_width"
             android:layout_height="@dimen/cover_height"
             android:clickable="true"
             android:foreground="@drawable/cover_selector">


    <ImageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:scaleType="centerCrop"
        tools:src="@drawable/image_1"/>

    <TextView
        android:id="@+id/label"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:background="@drawable/label_background"
        android:gravity="center"
        android:padding="8dp"
        android:textAppearance="?android:attr/textAppearanceSmallInverse"
        android:visibility="gone"
        tools:text="Title"/>
</FrameLayout>

item_title.xml 布局

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:gravity="center"
          android:textColor="@color/red"
          android:textSize="13sp"
          tools:text="title"/>

cover_selector.xml 選中陰影效果

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <color android:color="#96000000" />
    </item>
    <item>
        <color android:color="@android:color/transparent" />
    </item>
</selector>

代碼其實很簡單，文章結尾部分是我在GitHub上面的Demo艇肴，可以下載看下

注意下一些屬性的使用

coverWidth 圖片的寬度
coverHeight 圖片的高度
scalingThreshold 距離中心的距離是小部件大小的一半腔呜，在這里，它開始縮放
1意味著從小部件的邊緣開始縮放再悼，0意味著只有中心縮放默認是0.5
adjustPositionMultiplier 調(diào)整擴大圖片的間距 默認1.0f
maxScaleFactor 選中圖片放大倍速 1.5倍合適
reflectionGap  反射和原始圖像在像素上的差距
rotationThreshold 旋轉角度
spacing 圖片之間的間隔
circlePathRadius 圓徑的半徑。屏幕的范圍是-1到1膝但，最小半徑是1,默認是2f
reflectionHeight 倒影的高度 默認是0.5
reflectionBackroundColor 倒影的背景色 默認是透明
alignAnimationTime 對齊動畫需要多長時間 默認是350毫秒

在github上的地址
https://github.com/shaozucheng/MyCoverFlowDemo
需要的小伙伴最好去下載代碼看下

原本的github 地址:https://github.com/moondroid/CoverFlow