在还没给大家介绍单选按钮(RadioGroup)的使用，先给大家展示下效果图吧：
xml文件
<LinearLayout 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" tools:context=".MainActivity" android:orientation="vertical"> <TextView android:id="@+id/txt" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="您的性别为"/> <RadioGroup android:id="@+id/sex" android:layout_width="fill_parent" android:layout_height="wrap_content"> <RadioButton android:id="@+id/male" android:text="男"/> <RadioButton android:id="@+id/female" android:text="女"/> </RadioGroup> </LinearLayout>
java文件
public class MainActivity extends Activity { private TextView txt=null; private RadioGroup sex=null; private RadioButton male=null; private RadioButton female=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); this.txt=(TextView) super.findViewById(R.id.txt); 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 OnCheckedChangeListenerImp()); } private class OnCheckedChangeListenerImp implements OnCheckedChangeListener{ public void onCheckedChanged(RadioGroup group, int checkedId) { String temp=null; if(MainActivity.this.male.getId()==checkedId){ temp="男"; } else if(MainActivity.this.female.getId()==checkedId){ temp="女"; } MainActivity.this.txt.setText("您的性别是"+temp); } }
以上所述是小编给大家介绍的Android程序开发中单选按钮(RadioGroup)的使用详解，希望对大家有所帮助！