代码布局

<RadioGroup android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

    <RadioButton android:id="@+id/xianyugame_login_mobile_by_pwd"
                 android:layout_width="0.0dip"
                 android:layout_height="@dimen/login_button_large_height"
                 android:layout_weight="1.0"
                 android:background="@drawable/login_tab_background"
                 android:button="@null"
                 android:checked="true"
                 android:gravity="center"
                 android:text="@string/login_mobile_login_password"
                 android:textColor="@drawable/blue_text_button"
                 android:textSize="@dimen/login_button_large_text"/>

    <RadioButton android:id="@+id/xianyugame_login_mobile_by_code"
                 android:layout_width="0.0dip"
                 android:layout_height="@dimen/login_button_large_height"
                 android:layout_weight="1.0"
                 android:background="@drawable/login_tab_background"
                 android:button="@null"
                 android:gravity="center"
                 android:text="@string/login_mobile_login_sms"
                 android:textColor="@drawableblue_text_button"
                 android:textSize="@dimen/login_button_large_text"/>

</RadioGroup>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_checked="true" android:drawable="@drawable/login_tab_checked"/>
    <item android:drawable="@drawable/login_tab_default"/>

</selector>

  loginPwd.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                mPwdNextStep.setVisibility(isChecked ? View.VISIBLE : View.GONE);
                mCodeNextStep.setVisibility(isChecked ? View.GONE : View.VISIBLE);

                mPasswordLayout.setVisibility(isChecked ? View.VISIBLE : View.GONE);
                mCodeLayout.setVisibility(isChecked ? View.GONE : View.VISIBLE);
            }
        });