ViewPager簡單示例

這裏使用android.support.v4.view.ViewPager實現圖片滑動顯示

activity_main.xm

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.viewpager.MainActivity" >

    <android.support.v4.view.ViewPager
		 android:id="@+id/vp"
		 android:layout_height="match_parent"
		 android:layout_width="match_parent">
	</android.support.v4.view.ViewPager> 

</RelativeLayout>

MainActivity.java

package com.example.viewpager;



import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;

public class MainActivity extends Activity {

	private ViewPager vp;
       //圖片數據
        private int[] image =new int[]{R.drawable.ic_launcher,R.drawable.ic_launcher,
			R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};
	private List<ImageView> imagelist;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		imagelist = new ArrayList<>();
		for(int i = 0; i < image.length; i ++){
			ImageView imageView = new ImageView(this);
			imageView.setImageResource(image[i]);
			imageView.setScaleType(ScaleType.FIT_XY);
			imagelist.add(imageView);
		}
		vp = (ViewPager)findViewById(R.id.vp);
		//vp.setPageTransformer(true, arg1);
               //使用PagerAdapter
                vp.setAdapter(new PagerAdapter() {
		
			@Override
			public Object instantiateItem(ViewGroup container, int position) {
				// TODO Auto-generated method stub
				
				container.addView(imagelist.get(position));
				
				return imagelist.get(position);
			}
			
			@Override
			public void destroyItem(ViewGroup container, int position, Object object) {
				// TODO Auto-generated method stub
				container.removeView(imagelist.get(position));
			}
			
			@Override
			public boolean isViewFromObject(View arg0, Object arg1) {
				// TODO Auto-generated method stub
				return arg0 == arg1;
			}
			
			@Override
			public int getCount() {
				// TODO Auto-generated method stub
				return image.length;
			}
		});
	}

	
}

這只是一個最基本的簡單示例