android之【代码实现ImageView图片切换】

public class MixView extends Activity
{
  //定义一个访问图片的数组
  int[] images = new int[]{
    R.drawable.java,
    R.drawable.ee,
    R.drawable.classic,
    R.drawable.ajax,
    R.drawable.xml,
  };
  int currentImg = 0;
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    //获取LinearLayout布局容器
    LinearLayout main = (LinearLayout)findViewById(R.id.root);
    //程序创建ImageView组件
    final ImageView image = new ImageView(this);
    //将ImageView组件添加到LinearLayout布局容器中
    main.addView(image);
    //初始化时显示第一张图片
    image.setImageResource(images[0]);
    image.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View v)
      {
        if (currentImg >= 4)
        {
          currentImg = -1;
        }
        //改变ImageView里显示的图片
        image.setImageResource(images[++currentImg]);
      }
    });
  }
}