安卓课程十八 RadioButton单选按钮的使用:
具体内容实现查看网页:http://sarin.iteye.com/blog/1636484
activity_main.xml
RadioGroup android:id="@+id/idGroup" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <RadioButton android:layout_width="wrap_content" android:id="@+id/radio_boy" android:layout_height="wrap_content" android:text="@string/sex_boy" android:checked="true" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/radio_girl" android:text="@string/sex_girl" /> </RadioGroup> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/selectBtn" android:id="@+id/selectBtn" />
MainActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button btn;
private RadioGroup radioGroup;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
radioGroup = (RadioGroup) this.findViewById(R.id.idGroup);
btn = (Button) this.findViewById(R.id.selectBtn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
int radioCount = radioGroup.getChildCount();
RadioButton radioButton;
String msg = "";
for (int i = 0; i < radioCount; i++) {
radioButton =(RadioButton) radioGroup.getChildAt(i) ;
if(radioButton.isChecked()){
msg = radioButton.getText().toString();
break;
}
}
Toast.makeText(MainActivity.this,msg,Toast.LENGTH_SHORT).show();
}
});
}
}