多项选择（CheckBox）

CheckBox 类是 Button 的子类，层次关系例如以下：

android.widget.Button
android.widget.CompoundButton
android.widget.CheckBox

CheckBox 类方法

CheckBox 演示样例

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1.MainActivity.java

package com.sweetlover.activity;

import com.sweetlover.checkboxdemo.R;

import android.app.Activity;

import android.os.Bundle;

import android.view.Gravity;

import android.view.View;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.Toast;

public class MainActivity extends Activity {

	private static final int CTRL_NUM = 4;

	private CheckBox[] checkBox = null;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		checkBox = new CheckBox[CTRL_NUM];

		checkBox[0] = (CheckBox)findViewById(R.id.checkBox1);

		checkBox[1] = (CheckBox)findViewById(R.id.checkBox2);

		checkBox[2] = (CheckBox)findViewById(R.id.checkBox3);

		checkBox[3] = (CheckBox)findViewById(R.id.checkBox4);

		// TODO Register events

		for (int i = 0; i < CTRL_NUM; i++)

			checkBox[i].setOnCheckedChangeListener(new CheckBoxListener());

	}

	public void onClickSubmit(View view) {

		String str = "";

		for (int i = 0; i < CTRL_NUM; i++) {

			if (checkBox[i].isChecked())

				str += checkBox[i].getText() + " ";

		}

		Toast.makeText(this, str + "被选择", Toast.LENGTH_LONG).show();

	}

	class CheckBoxListener implements OnCheckedChangeListener {

		@Override

		public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

			// TODO Auto-generated method stub

			String text = buttonView.getText().toString();

			if (isChecked)

				text += " 被选择";

			else

				text += " 取消选择";

			Toast toast = Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT);

			toast.setGravity(Gravity.CENTER, 5, 5);

			toast.show();

		}

	}

}

2.activity_main.xml

<?

xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:padding="30dp" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:text="@string/Tittle"

        android:textAppearance="?android:attr/textAppearanceMedium" />

    <CheckBox

        android:id="@+id/checkBox1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="30dp"

        android:text="@string/Profile1" />

    <CheckBox

        android:id="@+id/checkBox2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="30dp"

        android:text="@string/Profile2" />

    <CheckBox

        android:id="@+id/checkBox3"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="30dp"

        android:text="@string/Profile3" />

    <CheckBox

        android:id="@+id/checkBox4"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="30dp"

        android:text="@string/Profile4" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="30dp"

        android:onClick="onClickSubmit"

        android:text="@string/Submit" />

</LinearLayout>

3.string.xml

<resources>

    <string name="app_name">CheckBoxDemo</string>

    <string name="Tittle">请选择喜欢的情景模式</string>

    <string name="Profile1">上班模式</string>

    <string name="Profile2">家庭模式</string>

    <string name="Profile3">旅游模式</string>

    <string name="Profile4">会议模式</string>

    <string name="Submit">提交</string>

</resources>

4.AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.sweetlover.checkboxdemo"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="19" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity android:name="com.sweetlover.activity.MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>

            </intent-filter>

        </activity>

    </application>

</manifest>