CycleImageActivity.java

package com.demo;
 
import java.util.Timer;
import java.util.TimerTask;
 
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
 
/**
 * gallery 图片循环播放，自动播放，无惯性（一次滑动一张图）
 *
 * @author Feng
 *
 */
public class CycleImageActivity extends Activity {
    public static int[] picture = { R.drawable.gallery1, R.drawable.gallery2,
            R.drawable.gallery3, R.drawable.gallery4 };
    private MyGallery pictureGallery = null;
    private int index = 0;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.pictureGallery = (MyGallery) findViewById(R.id.mygallery);
        ImageAdapter adapter = new ImageAdapter(this);
        this.pictureGallery.setAdapter(adapter);
        Timer timer = new Timer();
        timer.schedule(task, 7000, 7000);
    }
 
    /**
     * 定时器，实现自动播放
     */
    private TimerTask task = new TimerTask() {
        @Override
        public void run() {
            Message message = new Message();
            message.what = 2;
            index = pictureGallery.getSelectedItemPosition();
            index++;
            handler.sendMessage(message);
        }
    };
 
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
            case 2:
                pictureGallery.setSelection(index);
                break;
            default:
                break;
            }
        }
    };
 
    /**
     * 自定义图片显示适配器
     *
     */
    class ImageAdapter extends BaseAdapter {
        private Context context;
 
        public ImageAdapter(Context context) {
            this.context = context;
        }
 
        public int getCount() {
            return Integer.MAX_VALUE;
        }
 
        public Object getItem(int position) {
            return position;
        }
 
        public long getItemId(int position) {
            return position;
        }
 
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView = new ImageView(context);
            imageView.setImageResource(picture[position % picture.length]);
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
            imageView.setLayoutParams(new Gallery.LayoutParams(
                    Gallery.LayoutParams.FILL_PARENT,
                    Gallery.LayoutParams.FILL_PARENT));
            return imageView;
        }
    }
 
}

MyGallery.java

package com.demo;
 
import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.Gallery;
 
/**
 * 自定义画廊，实现一次只滑动一张图片，无惯性
 *
 * @author Feng
 *
 */
class MyGallery extends Gallery {
 
    public MyGallery(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }
 
    public MyGallery(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
 
    public void setImageActivity(CycleImageActivity context) {
 
    }
 
    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
 
        int kEvent;
        if (isScrollingLeft(e1, e2)) {
            kEvent = KeyEvent.KEYCODE_DPAD_LEFT;
        } else {
            kEvent = KeyEvent.KEYCODE_DPAD_RIGHT;
        }
        onKeyDown(kEvent, null);
 
        if (this.getSelectedItemPosition() == 0) {// 实现后退功能
            this.setSelection(CycleImageActivity.picture.length);
        }
        return false;
 
    }
 
    private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) {
        return e2.getX() > e1.getX();
    }
 
    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
            float distanceY) {
        // TODO Auto-generated method stub
        return super.onScroll(e1, e2, distanceX, distanceY);
    }
 
}

****activity_main.xml****

<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" >
 
    <com.demo.MyGallery
        android:id="@+id/mygallery"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:spacing="30dp"
        android:unselectedAlpha="1" />
 
</RelativeLayout>

Paste_Image.png