Android之RadioButton控件使用

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RadioButton控件

RadioButton控件一定要放到RadioGroup里面，默认是三个

<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 {@Overrideprotected 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;}}@Overridepublic 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;}@Overridepublic 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);}}

运行效果图

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