package com.example.test2;

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;

public class SecondActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.second_activity);

    }

}

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="this is second activity"

        />

</LinearLayout>

package com.example.test2;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;

public class MainActivity extends Activity implements OnCheckedChangeListener {

    private Button login_button;

    private Button reset;

    private RadioGroup rg;

    private Button other;

    private CheckBox checkBox1;

    private Button myButton;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_radiobutton);

        rg = (RadioGroup) this.findViewById(R.id.radioGroup1);

        rg.setOnCheckedChangeListener(this);

        Button btn  = (Button) findViewById(R.id.button1);

        btn.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                Intent intent = new Intent(MainActivity.this,SecondActivity.class);

                MainActivity.this.startActivity(intent);

            }

        });

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

    @Override

    public void onCheckedChanged(RadioGroup arg0, int checkId) {

        // TODO Auto-generated method stub

        switch(checkId){

        case R.id.radio0:

            Log.i("tag", "当前选中男");

            break ;

        case R.id.radio1:

            Log.i("tag", "当前选中女");

            break ;

        default:

            break ;

        }

    }

}