Android程序开发中单选按钮(RadioGroup)的使用详解

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); 
} }