android的Activity变换

android的Activity转换
原文地址：http://blog.sina.com.cn/s/blog_694448320100lw0s.html
演示代码如下：



public class OneActivity extends Activity{
public void onCreate(Bundle savedInstanceState){
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Button nextButton = (Button)findViewById(R.id.next);
  nextButton.setOnClickListener(new View.OnClickListener(){
   public void onClick(View v){
    nextLayout();
   }
  });
}
public void nextLayout(){
  setContentView(R.layout.two);
  Button upButton = (Button)findViewById(R.id.up);
  upButton.setOnClickListener(new View.OnClickListner(){
   public void onClick(View v){
    upLayout();
   }
  });
}
public void upLayout(){
  setContentView(R.layout.main);
  Button nextButton = (Button)findById(R.id.next);
  nextButton.setOnClickListener(new View.OnClickListener(){
   public void onClick(View v){
    nextLayout();
   }
  });

}
}