使用Gallery和ImageView实现android左右滑动+索引图标效果。

    首先自定义Gallery实现一次只能滑动一个页面

public class MGalleryView extends Gallery{    public MGalleryView(Context context, AttributeSet attrs) {        super(context, attrs);    }    //一次只能滑动一张图片注：一张图充满全屏    @Override    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,            float velocityY) {        int kEvent;        if (isScrollingLeft(e1, e2)) {            // Check if scrolling left            kEvent = KeyEvent.KEYCODE_DPAD_LEFT;        } else {            // Otherwise scrolling right            kEvent = KeyEvent.KEYCODE_DPAD_RIGHT;        }        onKeyDown(kEvent, null);        return true;    }    private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) {        return e2.getX() > e1.getX();    }}

然后再主Activity"MGalleryActivity"的xml中注册一下

主activity的java代码

public class MGalleryActivity extends Activity {    int[] data = new int[] { R.drawable.image1, R.drawable.image2,            R.drawable.image3, R.drawable.image4, R.drawable.image5,            R.drawable.image6 };    private ImageView[] imageviews;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.galleryactvity);        setView();    }    private void setView() {        MGalleryView gallery = (MGalleryView) findViewById(R.id.gallery_id);        LinearLayout viewgroup = (LinearLayout) findViewById(R.id.linearlayout_id);        imageviews = setGalleryIndex(viewgroup);        gallery.setAdapter(new MGalleryAdapter(this, data));        //Gallery每次滑动都调用这个方法        gallery.setOnItemSelectedListener(new OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView
      arg0, View arg1,                    int arg2, long arg3) {                //使用for循环，给所有的gallery索引添加图片                for (int i = 0; i < imageviews.length; i++) {                        imageviews[i]                                .setImageResource(R.drawable.alipay_n);                }                //为被选中的gallery的索引添加图片                imageviews[arg2].setImageResource(R.drawable.alipay_s);            }            @Override            public void onNothingSelected(AdapterView
      arg0) {            }        });    }    //设置左右滑动索引    private ImageView[] setGalleryIndex(LinearLayout viewgroup) {        ImageView[] images = new ImageView[data.length];        for (int i = 0; i < images.length; i++) {            ImageView newimage = new ImageView(this);            newimage.setLayoutParams(new LayoutParams(20, 10));            newimage.setPadding(5, 0, 5, 0);            images[i] = newimage;            if (i == 0) {                //默认选择第一张                images[i].setImageResource(R.drawable.alipay_n);            } else {                images[i].setImageResource(R.drawable.alipay_s);            }            viewgroup.addView(images[i]);        }        return images;    }}

 Gallery的适配器

public class MGalleryAdapter extends BaseAdapter{    private int[] data;    private Context mContext;    public MGalleryAdapter(Context context,int[] data) {        this.data=data;        this.mContext=context;    }    @Override    public int getCount() {        // TODO Auto-generated method stub        return data.length;    }    @Override    public Object getItem(int position) {        // TODO Auto-generated method stub        return position;    }    @Override    public long getItemId(int position) {        // TODO Auto-generated method stub        return 0;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ImageView image = new ImageView(mContext);        image.setImageResource(data[position]);        return image;    }}

 源码：