单选按钮的操作

来源：互联网发布：mac更换硬盘克隆系统编辑：程序博客网时间：2024/05/17 17:38

布局文件main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".Sex">    <TextView        android:id="@+id/show"        android:textSize="20px"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="你的性别是：" />    <RadioGroup        android:id="@+id/sex"        android:orientation="vertical"        android:checkedButton="@+id/male"        android:layout_width="fill_parent"        android:layout_height="wrap_content">        <RadioButton            android:id="@+id/male"            android:text="男"            android:layout_width="fill_parent"            android:layout_height="wrap_content" />        <RadioButton            android:id="@+id/female"            android:text="女"            android:layout_width="fill_parent"            android:layout_height="wrap_content" />    </RadioGroup></LinearLayout>

定义Activity程序

package com.example.lenovo.myapplication;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TextView;public class Sex extends AppCompatActivity {        private TextView show ;        private RadioGroup sex ;        private RadioButton male ;        private RadioButton female ;        @Override        protected void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            setContentView(R.layout.activity_main);            this.show = (TextView) super.findViewById(R.id.show);            this.sex = (RadioGroup) super.findViewById(R.id.sex);            this.male = (RadioButton) super.findViewById(R.id.male);            this.female = (RadioButton) super.findViewById(R.id.female);            this.sex.setOnCheckedChangeListener(new OnCheckedChangeListenerImpl());        }        private class OnCheckedChangeListenerImpl implements RadioGroup.OnCheckedChangeListener {            @Override        public void onCheckedChanged(RadioGroup group, int checkedId) {                String temp = null;                if (Sex.this.male.getId()==checkedId){                    temp = Sex.this.male.getText().toString();                }                if (Sex.this.female.getId()==checkedId){                    temp = Sex.this.female.getText().toString();                }                Sex.this.show.setText("你的性别是："+temp);            }        }}

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