Gallery和ImageSwitcher

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activity_main.xml：

<LinearLayout 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:orientation="vertical"    tools:context=".MainActivity" >    <Gallery        android:id="@+id/gallery"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <ImageSwitcher        android:id="@+id/imageSwitcher"        android:layout_marginTop="150dp"        android:layout_width="match_parent"        android:layout_height="wrap_content" >    </ImageSwitcher></LinearLayout>

自定义的ImageAdapter：

public class ImageAdapter extends BaseAdapter {private int[] res;private Context context;public ImageAdapter(int[] res,Context context) {super();this.res = res;this.context=context;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn Integer.MAX_VALUE;     //以便“无限”循环显示（一般情况下滚动不到这个最大值）}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn res[position];}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubImageView imageView=new ImageView(context);imageView.setBackgroundResource(res[position%res.length]);  //无限“循环”显示imageView.setLayoutParams(new Gallery.LayoutParams(200, 150));   //imageView.setScaleType(ScaleType.FIT_XY);    //设置拉伸效果return imageView;}}

MainActivity.java

public class MainActivity extends Activity implements OnItemSelectedListener,ViewFactory{//准备数据源private int[] resIcon = { R.drawable.item1, R.drawable.item2,R.drawable.item3, R.drawable.item4, R.drawable.item5,R.drawable.item6, R.drawable.item7, R.drawable.item8,R.drawable.item9, R.drawable.item10, R.drawable.item11,R.drawable.item12 };private Gallery gallery;private ImageAdapter adapter;private ImageSwitcher imageSwitcher;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);gallery=(Gallery) findViewById(R.id.gallery);imageSwitcher=(ImageSwitcher) findViewById(R.id.imageSwitcher);//gallery加载适配器adapter=new ImageAdapter(resIcon, this);gallery.setAdapter(adapter);//设置监听器gallery.setOnItemSelectedListener(this);//ImageSwitcherimageSwitcher.setFactory(this);imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_in));imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic void onItemSelected(AdapterView<?> parent, View view, int position,long id) {// imageView.setBackgroundResource(res[position%res.length]);  //无限“循环”显示imageSwitcher.setBackgroundResource(resIcon[position%resIcon.length]);}@Overridepublic View makeView() {// TODO Auto-generated method stubImageView imageView=new ImageView(this);imageView.setScaleType(ScaleType.FIT_CENTER);return imageView;}@Overridepublic void onNothingSelected(AdapterView<?> parent) {// TODO Auto-generated method stub}}

效果图：

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