Android开发之StackView用法和遇到的坑分析

public class MainActivity extends Activity {
  StackView stackView ;
  int[] imageIds = new int[]{
      R.drawable.a0,R.drawable.a00,R.drawable.a1,R.drawable.a02,
      R.drawable.a1,R.drawable.a2, R.drawable.a3
  };
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    stackView = (StackView) findViewById(R.id.mStackView);
    //创建一个list 对象 元素是MAP
    List<Map<String,Object>> listItems =
        new ArrayList<Map<String,Object>>();
    for( int i = 0 ; i < imageIds.length ; i++ ){
      Map<String,Object> listItem = new HashMap<String, Object>();
      listItem.put("image",imageIds[i]);
      listItems.add(listItem);
    }
    //创建一个Simple Adapter
    SimpleAdapter simpleAdapter = new SimpleAdapter(this,
        listItems,
        R.layout.photo,
        new String[]{"image"},
        new int[]{R.id.image1});
    stackView.setAdapter(simpleAdapter);
  }
  public void prev(View source){
    //显示上一个组件
    stackView.showPrevious();
  }
  public void next(View source){
    //显示下一个组件
    stackView.showNext();
  }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">
  <ImageView
    android:id="@+id/image1"
    android:layout_width="200dp"
    android:layout_height="200dp"
    android:scaleType="fitXY"
    android:layout_gravity="center"/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/container"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  tools:context=".MainActivity">
  <StackView
    android:id="@+id/mStackView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:loopViews="true"/>
  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:gravity="center_horizontal"
    android:orientation="horizontal">
    <Button
      android:id="@+id/button01"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:onClick="prev"
      android:text="上一个" />
    <Button
      android:id="@+id/button02"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:onClick="next"
      android:text="下一个" />
  </LinearLayout>
</RelativeLayout>