Android之RadioButton控件使用

<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.example.android_radiosbutton.MainActivity" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/sex"
android:textSize="25sp" />

<RadioGroup
android:id="@+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/textView1"
android:layout_marginLeft="28dp"
android:layout_toRightOf="@+id/textView1"
android:orientation="horizontal" >

<RadioButton
android:id="@+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男"
android:onClick="onRadioButtonClicked"
android:textSize="15sp" />

<RadioButton
android:id="@+id/radio1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女"
android:onClick="onRadioButtonClicked"
android:textSize="15sp" />

<RadioButton
android:id="@+id/radio2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="保密"
android:checked="true"
android:onClick="onRadioButtonClicked"
android:textSize="15sp" />
</RadioGroup>

</RelativeLayout>

package com.example.android_radiosbutton;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.RadioButton;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

//radiobutton点击事件
public void onRadioButtonClicked(View view) {
RadioButton radiobtn = (RadioButton) view;
boolean isChecked = radiobtn.isChecked();
switch (view.getId()) {
case R.id.radio0:
if(isChecked){
Toast.makeText(MainActivity.this, radiobtn.getText(), 1).show();;
}
break;
case R.id.radio1:
if(isChecked){
Toast.makeText(MainActivity.this, radiobtn.getText(), 1).show();;
}
break;

case R.id.radio2:
if(isChecked){
Toast.makeText(MainActivity.this, radiobtn.getText(), 1).show();;
}
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);
}
}