【Android开发学习26】界面控件之选项组件(RadioGroup和CheckBox)

一、基础知识:

单项选择组件 : RadioGroup 互相排斥

多项选择组件 : CheckBox 彼此独立

二、代码展示:

1."Activity_08\src\yan\activity_08\MainActivity.java"

package yan.activity_08;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.CheckBox;import android.widget.CompoundButton;//import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.Toast;public class MainActivity extends Activity {private RadioGroupsixRadioGroup;private RadioButton femaleRadioButton;private RadioButton maleRadioButton;private CheckBox swimCheckBox;private CheckBox runCheckBox;private CheckBox readCheckBox;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);sixRadioGroup = (RadioGroup)findViewById(R.id.myRadioGroup);femaleRadioButton = (RadioButton)findViewById(R.id.myRadioButton1);maleRadioButton = (RadioButton)findViewById(R.id.myRadioButton2);swimCheckBox = (CheckBox)findViewById(R.id.swim);runCheckBox = (CheckBox)findViewById(R.id.run);readCheckBox = (CheckBox)findViewById(R.id.read);class RadioGroupCheckBoxListener implements RadioGroup.OnCheckedChangeListener{@Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {// TODO Auto-generated method stubif(checkedId == femaleRadioButton.getId()){Toast.makeText(MainActivity.this, R.string.female_y_note, Toast.LENGTH_SHORT).show();}else if(checkedId == maleRadioButton.getId()){Toast.makeText(MainActivity.this, R.string.male_y_note, Toast.LENGTH_SHORT).show();}}}class SwimCheckBoxListener implements OnCheckedChangeListener{@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {// TODO Auto-generated method stubif(isChecked){Toast.makeText(MainActivity.this, R.string.swim_y_note, Toast.LENGTH_SHORT).show();}else{Toast.makeText(MainActivity.this, R.string.swim_n_note, Toast.LENGTH_SHORT).show();}}}class RunCheckBoxListener implements OnCheckedChangeListener{@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {// TODO Auto-generated method stubif(isChecked){Toast.makeText(MainActivity.this, R.string.run_y_note, Toast.LENGTH_SHORT).show();}else{Toast.makeText(MainActivity.this, R.string.run_n_note, Toast.LENGTH_SHORT).show();}}}class ReadCheckBoxListener implements OnCheckedChangeListener{@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {// TODO Auto-generated method stubif(isChecked){Toast.makeText(MainActivity.this, R.string.read_y_note, Toast.LENGTH_SHORT).show();}else{Toast.makeText(MainActivity.this, R.string.read_n_note, Toast.LENGTH_SHORT).show();}}}swimCheckBox.setOnCheckedChangeListener(new SwimCheckBoxListener());runCheckBox.setOnCheckedChangeListener(new RunCheckBoxListener());readCheckBox.setOnCheckedChangeListener(new ReadCheckBoxListener());sixRadioGroup.setOnCheckedChangeListener(new RadioGroupCheckBoxListener());}@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;}}

2."Activity_08\res\layout\main.xml"

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="vertical"      android:layout_width="fill_parent"      android:layout_height="fill_parent" android:background="#00aaaa"      >     <TextViewandroid:id="@+id/firstText"  android:text="@string/hello_world"  android:gravity="center_vertical"  android:textSize="15pt"  android:background="#aa0000"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:singleLine="true"/>     <!--建立一RadioGroup -->   <RadioGroup     android:id="@+id/myRadioGroup"     android:layout_width="150dp"     android:layout_height="95dp"     android:orientation="vertical"     android:background="#00aa00"       >     <!--第一RadioButton -->     <RadioButton       android:id="@+id/myRadioButton1"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:text="@string/female"     />     <!--第二RadioButton -->     <RadioButton       android:id="@+id/myRadioButton2"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:text="@string/male"     />     </RadioGroup>            <CheckBox          android:id="@+id/swim"         android:text="@string/swim"         android:layout_width="fill_parent"         android:layout_height="wrap_content"/>     <CheckBox         android:id="@+id/run"         android:text="@string/run"        android:layout_width="fill_parent"         android:layout_height="wrap_content"/>     <CheckBox         android:id="@+id/read"         android:text="@string/read"         android:layout_width="fill_parent"         android:layout_height="wrap_content"/>   </LinearLayout>  

3."Activity_08\res\values\strings.xml"

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">Activity_08</string>    <string name="hello_world">Hello world!</string>    <string name="menu_settings">Settings</string><string name="female">女</string><string name="female_y_note">性别:女 被选中</string><string name="male">男</string><string name="male_y_note">性别:男 被选中</string><string name="swim">游泳</string><string name="swim_y_note">游泳被选中！</string><string name="swim_n_note">游泳被取消选中！</string><string name="run">跑步</string><string name="run_y_note">跑步被选中！</string><string name="run_n_note">跑步被取消选中！</string><string name="read">阅读</string><string name="read_y_note">阅读被选中！</string><string name="read_n_note">阅读被取消选中！</string></resources>

三、效果展示:

本文完整代码下载地址: http://download.csdn.net/detail/ypist/5146866

本文博客源地址:http://blog.csdn.net/ypist