AlertDialog，当点击按钮时，能够根据界面上输入的数据，弹出对话框，显示界面中输入的相关信息

我的代码采用分离监听器的模式，即不在 setOnclickListener 中 new OnClickListener(). 

public class MainActivity extends Activity  implements View.OnClickListener{
    protected void onCreate(Bundle savedInstanceState){
	Button btn = (Button)findViewById(R.id.button1);
	btn.setOnClickListener(this); 
    }
}

@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		final EditText etname = (EditText)findViewById(R.id.name);
		EditText etphone = (EditText)findViewById(R.id.phoneNum);
		EditText etpassword = (EditText)findViewById(R.id.password);
		RadioGroup group = (RadioGroup)findViewById(R.id.radiogroup1);
		RadioButton select = (RadioButton)findViewById(group.getCheckedRadioButtonId());
		String line = "你的姓名:" + etname.getText().toString() + 
				"\n你的电话:" + etphone.getText().toString() + 
				"\n你的