【so easy~】 Gallery 模仿Flash广告栏~！附源码
先上个效果图~
http://androiddada.iteye.com/
思路是这样的，功能方面：
首先这个是个左右循环的Gallery（其实是Integer.MAX_VALUE = 2147483647 这么多的个啦，接近无限了）。
这个网上有很多，不再赘述。代码里面也有，可以直接下载~
然后就是Gallery的样式，我这里 设置成无阴影的，间距 android:spacing="0dip"。
最后就是下面的指示条了，我使用FrameLayout布局，里面的指示点 radiobuttion.(因为只要一个是点亮的，用于指示当前位置，所以在一个group中)
下面是重要代码：
布局：
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <FrameLayout android:layout_width="fill_parent" android:layout_height="150dip" > <com.test.AdvGallery android:fadingEdge="none" android:id="@+id/home_advs_gallery" android:spacing="0dip" android:layout_width="fill_parent" android:layout_height="150dip" /> <LinearLayout android:layout_width="fill_parent" android:layout_height="20dip" android:layout_gravity="bottom" android:background="#55999999" android:gravity="center" android:orientation="horizontal" > <RadioGroup android:gravity="center" android:id="@+id/home_advs_gallery_mark" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" > </RadioGroup> </LinearLayout> </FrameLayout></LinearLayout>
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自定义Gallery，为了解决Gallery拖拽滑动过快：
public class AdvGallery extends Gallery {public AdvGallery(Context context) {super(context);// TODO Auto-generated constructor stub}public AdvGallery(Context context, AttributeSet attrs) {super(context, attrs);// TODO Auto-generated constructor stub}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {//返回false 解决Gallery拖拽滑动过快return false;}@Overridepublic void setUnselectedAlpha(float unselectedAlpha) {// TODO Auto-generated method stubunselectedAlpha = 1.0f;super.setUnselectedAlpha(unselectedAlpha);}adapter中的 getview方法：
@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubImageView imageView = new ImageView(context); String curr_URL = imgURL.get(position%imgURL.size());imageView.setTag(curr_URL); Drawable cachedImage = asyncImageLoader.loadDrawable(context,curr_URL,new ImageCallback1() { @Override public void imageLoaded(Drawable imageDrawable, String imageUrl) { ImageView imageViewByTag = (ImageView) gallery.findViewWithTag(imageUrl); if (imageViewByTag != null && imageDrawable != null ) { imageViewByTag.setImageDrawable(imageDrawable); notifyDataSetChanged(); } } }); if (cachedImage != null) { imageView.setImageDrawable(cachedImage); }else{ imageView.setImageResource(R.drawable.ic_launcher); }// 设置边界对齐 imageView.setAdjustViewBounds(true); imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));//设置比例类型 // imageView.setScaleType(ImageView.ScaleType.FIT_XY);return imageView;}main中的oncreate：
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); _radioGroup = (RadioGroup) findViewById(R.id.home_advs_gallery_mark); _adv_Gallery = (Gallery) findViewById(R.id.home_advs_gallery); _advGalleryAdapter = new AdvGalleryAdapter(ADV_GalleryActivity.this,_adv_imgURL,_adv_Gallery); _adv_Gallery.setAdapter(_advGalleryAdapter);_adv_Gallery.setSelection(Integer.MAX_VALUE >> 1); _adv_Gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {@Overridepublic void onItemSelected(AdapterView<?> arg0, View arg1,int arg2, long arg3) {// TODO Auto-generated method stub_radioGroup.check(arg2%_adv_imgURL.size()); //Gallery焦点图片改变时 更改RadioGroup}@Overridepublic void onNothingSelected(AdapterView<?> arg0) {// TODO Auto-generated method stub}}); //图片地址 _adv_imgURL.add("http://www.baidu.com/img/baidu_sylogo1.gif");_adv_imgURL.add("http://www.iteye.com/images/logo.gif?1308833136");_adv_imgURL.add("http://csdnimg.cn/www/images/csdnindex_logo.gif");for(int i=0;i<_adv_imgURL.size();i++){RadioButton rb = new RadioButton(ADV_GalleryActivity.this);rb.setId(i);rb.setButtonDrawable(R.drawable.adv_gallery_mark_selector);rb.setClickable(false);_radioGroup.addView(rb);} }http://androiddada.iteye.com/
由于代码比较多，放上源码，希望大家能用到~！
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1 楼 warnerhit 2011-12-22 灰常感谢。我遇到一个问题