ImageSwitcher的用法

ImageSwitcher与TextSwitcher都继承了ViewSwitcher,其用法也是大同小异。都可以通过implements ViewSwitcher.ViewFactory来设置转换的view,自己照着demo学完后仿着TextSwitcher写了下面这个小例子。

 

public class ImageSwitcherexcercise extends Activity implements ViewSwitcher.ViewFactory, View.OnClickListener{
    int index=0;

    private ImageSwitcher p_w_picpathSwitcher;

    private int[] p_w_picpaths;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        p_w_picpaths=new int[]{R.drawable.one,R.drawable.two,R.drawable.three};
        Button button=(Button) findViewById(R.id.button1);
        p_w_picpathSwitcher=(ImageSwitcher) findViewById(R.id.p_w_picpathswitcher);
        p_w_picpathSwitcher.setFactory(this);
        button.setOnClickListener(this);
        showImage();
    }
    private void showImage() {
        // TODO Auto-generated method stub
        p_w_picpathSwitcher.setImageResource(p_w_picpaths[index]);
    }
    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        index++;
        showImage();
    }

    @Override
    public View makeView() {
        // TODO Auto-generated method stub
        ImageView p_w_picpathView=new ImageView(this);
        return p_w_picpathView;
    }

}

可以对比TextSwitcher学习ImageSwitcher,不多解释。