1 public class MainActivity extends Activity { 2     int[] image_ids = new int[] { R.drawable.focus_1, R.drawable.focus_2, 3             R.drawable.focus_3, R.drawable.focus_4, R.drawable.focus_5, 4             R.drawable.focus_7, R.drawable.focus_8, R.drawable.focus_9, 5             R.drawable.focus_10, R.drawable.focus_11, R.drawable.focus_12, 6             R.drawable.focus_13, R.drawable.focus_14, R.drawable.focus_15, 7             R.drawable.focus_16 }; 8  9     ImageSwitcher m_imageSwitcher;10 11     @Override12     protected void onCreate(Bundle savedInstanceState) {13         super.onCreate(savedInstanceState);14         setContentView(R.layout.activity_main);15         // 创建list容器，包含的元素是Map16         List<Map<String, Object>> listMaps = new ArrayList<Map<String, Object>>();17         for (int i = 0; i < image_ids.length; i++) {18             Map<String, Object> item = new HashMap<String, Object>();19             item.put("image", image_ids[i]);20             listMaps.add(item);21         }22         m_imageSwitcher = (ImageSwitcher) findViewById(R.id.imageswitcher_id);23         // 为imageSwitcher设置动画效果24         m_imageSwitcher.setFactory(new ViewFactory() {25 26             @Override27             public View makeView() {28                 // 创建ImageView对象29                 ImageView image = new ImageView(MainActivity.this);30                 image.setScaleType(ImageView.ScaleType.FIT_CENTER);31                 image.setLayoutParams(new ImageSwitcher.LayoutParams(32                         LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));33                 return image;34             }35         });36         // 创建一个simpleAdapter37         SimpleAdapter simpleAdapter = new SimpleAdapter(this, listMaps,38                 R.layout.cell, new String[] { "image" },39                 new int[] { R.id.image1 });40         GridView gridView = (GridView)findViewById(R.id.gridview_id);41         gridView.setAdapter(simpleAdapter);42         //常见列表被选中的监听器43         gridView.setOnItemSelectedListener(new OnItemSelectedListener() {44             @Override45             public void onItemSelected(AdapterView<?> parent, View view,46                     int position, long id) {47                 //显示当前被选中的图片48                 m_imageSwitcher.setImageResource(image_ids[position]);                49             }50 51             @Override52             public void onNothingSelected(AdapterView<?> parent) {53 54             }55         });56         //添加列表项被单机的监听器57         gridView.setOnItemClickListener(new OnItemClickListener() {58 59             @Override60             public void onItemClick(AdapterView<?> parent, View view,61                     int position, long id) {62                 // 显示被单机的列表项63                 m_imageSwitcher.setImageResource(image_ids[position]);                64             }65         });66     }67 68     @Override69     public boolean onCreateOptionsMenu(Menu menu) {70         // Inflate the menu; this adds items to the action bar if it is present.71         getMenuInflater().inflate(R.menu.main, menu);72         return true;73     }74 75     @Override76     public boolean onOptionsItemSelected(MenuItem item) {77         // Handle action bar item clicks here. The action bar will78         // automatically handle clicks on the Home/Up button, so long79         // as you specify a parent activity in AndroidManifest.xml.80         int id = item.getItemId();81         if (id == R.id.action_settings) {82             return true;83         }84         return super.onOptionsItemSelected(item);85     }86 }

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2     xmlns:tools="http://schemas.android.com/tools" 3     android:layout_width="fill_parent" 4     android:layout_height="fill_parent" 5     android:gravity="center_horizontal" 6     android:orientation="vertical" 7     android:paddingBottom="@dimen/activity_vertical_margin" 8     android:paddingLeft="@dimen/activity_horizontal_margin" 9     android:paddingRight="@dimen/activity_horizontal_margin"10     android:paddingTop="@dimen/activity_vertical_margin"11     tools:context="com.crazy.gridview.MainActivity" >12 13     <GridView14         android:id="@+id/grid01"15         android:layout_width="fill_parent"16         android:layout_height="wrap_content"17         android:gravity="center"18         android:horizontalSpacing="1pt"19         android:numColumns="4"20         android:verticalSpacing="1pt" />21 22     <ImageView23         android:id="@+id/imageView"24         android:layout_width="240dp"25         android:layout_height="240dp"26         android:layout_gravity="center_horizontal"27         android:contentDescription="@string/string_yulan" />28 29 </LinearLayout>

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:orientation="horizontal" 4     android:layout_width="fill_parent" 5     android:layout_height="fill_parent" 6     android:gravity="center_horizontal" 7     android:padding="4pt" 8     > 9 <ImageView10     android:id="@+id/image1"11     android:layout_width="50dp" 12     android:layout_height="50dp" 13     android:contentDescription="@string/desc_image1"14     />    15 </LinearLayout>