最近工作需要一個效果 就是需要展示一屏多個view  使用viewpager實現這個功能 可以預覽下一個view的一部分 效果圖如下：

程式碼如下：先上activity 

public class MyViewPagerActivity extends BaseActivity {

    private ViewPager viewPager;
    private MyViewPagerAdapter adapter;
    private List<Integer> list;
    private Context context;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_viewpager);
        context = this;
        addData();
        viewPager = (ViewPager) findViewById(R.id.viewpager);
        viewPager.setPageMargin(getResources().getDimensionPixelSize(R.dimen.page_magin)); //顯示viewpager間距
        viewPager.setOffscreenPageLimit(3);
        adapter = new MyViewPagerAdapter(context, list);
        viewPager.setAdapter(adapter);
    }

    /***
     * 填充資料
     */
    private void addData() {
        list = new ArrayList<>();
        list.add(R.color.red);
        list.add(R.color.blue);
        list.add(R.color.white);
        list.add(R.color.colorPrimary);
    }
 

package com.example.administrator.demo.viewpager;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.example.administrator.demo.R;

import java.util.List;

/**
 * Created by Administrator on 2017/6/7 0007.
 */

public class MyViewPagerAdapter extends PagerAdapter {
    private Context mContext;
    private List<Integer> mList;

    public MyViewPagerAdapter(Context context, List<Integer> list) {
        this.mContext = context;
        this.mList = list;
    }

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

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == object;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        View view = LayoutInflater.from(mContext).inflate(R.layout.item_my_viewpager, null);
        container.addView(view);  //這一步很關鍵 把當前的imageview新增到介面卡上
        ImageView ivViewPager = (ImageView) view.findViewById(R.id.iv_viewpager);
        ivViewPager.setBackgroundResource(mList.get(position));
        Log.d("TAG", "position ==== " +mList.get(position));
        return view;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        super.destroyItem(container, position, object);
    }

    @Override
    public float getPageWidth(int position) {
        return (float) 1;
    }
}
 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <FrameLayout
        android:layout_marginTop="@dimen/margin_size_50"
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clipChildren="false"
        android:layerType="software"
        >

        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="300dp"
            android:layout_gravity="center"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:clipChildren="false" />
    </FrameLayout>
</LinearLayout>
 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <ImageView
        android:id="@+id/iv_viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/corners_bg"
        />

</LinearLayout>