安卓跳转

public class MainActivity extends Activity{
private Button btn;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn=(Button)findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
setContentView(R.layout.secondlayout);

}
});


}

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
setContentView(R.layout.secondlayout);

}
});


}