Android学习笔记之CheckBox

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CheckBox复选按钮是一种有双状态按钮的特殊类型，可以选中或者不选中。可以现在布局文件中定义多选按钮，然后对每一个多选按钮进行事件监setOnCheckedChangeListener，通过isChecked来判断选项是否被选中

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/theme" />    <CheckBox         android:id="@+id/apple"        android:text="@string/apple"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <CheckBox        android:id="@+id/banana"        android:text="@string/banana"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>        </LinearLayout>

RadioGroupActivity.java

package Android.Activity;import android.app.Activity;import android.os.Bundle;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.Toast;public class RadioGroupActivity extends Activity {    /** Called when the activity is first created. */private CheckBox appleCheck = null;private CheckBox bananaCheck = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        //通过控件的ID来得到代表控件的对象        appleCheck = (CheckBox)findViewById(R.id.apple);        bananaCheck = (CheckBox)findViewById(R.id.banana);        //为RadioGroup设置监听器，需要注意的是，这里的监听器和Button控件的监听器有所不同        appleCheck.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(isChecked){Toast.makeText(RadioGroupActivity.this,"恭喜你，还剩很多苹果", Toast.LENGTH_LONG).show();}}});                bananaCheck.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(isChecked){Toast.makeText(RadioGroupActivity.this,"恭喜你，还剩很多香蕉", Toast.LENGTH_LONG).show();}}});    }}