作者:卿笃军
原文地址:http://blog.csdn.net/qingdujun/article/details/40679959
本文演示,Android单选按钮的使用。
1)MainActivity.java
package com.dg.radio; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.RadioGroup; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.Toast; public class MainActivity extends Activity { RadioGroup rGroup; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //获取界面上的RadioGroup组件 rGroup = (RadioGroup)findViewById(R.id.radioGroup1); rGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup arg0, int arg1) { // TODO Auto-generated method stub switch(arg1) { case R.id.male: Toast.makeText(getApplicationContext(), "您选择的性别是男", 0).show(); break; case R.id.female: Toast.makeText(getApplicationContext(), "您选择的性别是女", 1).show(); break; default:break; } } }); } @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 boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
2)activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.dg.radio.MainActivity" > <RadioGroup android:id="@+id/radioGroup1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="134dp" > <!-- 默认选择 :男--> <RadioButton android:id="@+id/male" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="true" android:text="男" /> <RadioButton android:id="@+id/female" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="女" /> </RadioGroup> </RelativeLayout>
3)运行效果
原文地址:http://blog.csdn.net/qingdujun/article/details/40679959
时间: 2024-10-12 20:48:32