1.radiogroup
1.1radiobutton的集合,表示一类radiobutton,提供多选一机制,譬如大家常用的选择男女的选项。
1.2radiogroup的属性:
android:orientation=“vertica”(垂直排列)/“horizontal”(水平排列)
2.实例代码
layout:
<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=".MainActivity" > <RadioGroup android:id="@+id/radioGroup1" android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginLeft="20dp" android:layout_marginTop="23dp" > <RadioButton android:id="@+id/radio0" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="true" android:text="男" /> <RadioButton android:id="@+id/radio1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="女" /> </RadioGroup> </RelativeLayout>
.java
package com.example.radiobutton; import android.os.Bundle; import android.util.Log; import android.app.Activity; import android.view.Menu; import android.widget.RadioGroup; import android.widget.RadioGroup.OnCheckedChangeListener; public class MainActivity extends Activity implements OnCheckedChangeListener { private RadioGroup rg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); rg = (RadioGroup) findViewById(R.id.radioGroup1); rg.setOnCheckedChangeListener(this); } @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 arg1) { // TODO Auto-generated method stub switch (arg1) { case R.id.radio0: Log.i("tag", "你是一个男生"); break; case R.id.radio1: Log.i("tag", "你是一个女生"); break; default: break; } } }