多选按钮（CheckBox），多选按钮checkbox

多选按钮（CheckBox），多选按钮checkbox

今天我们介绍的是Checkbox多选框：

1.Activity

//复选框，[基础控件]---状态切换控件CompoundButton及其子类CheckBox、RadioButton、ToggleButton、switch事件监听与场景使用
public class CheckBoxActivity extends Activity implements CompoundButton.OnCheckedChangeListener{
    
    private Context context;
    private CheckBox sleepCheckBox;
    private CheckBox dadoudouCheckBox;
    private CheckBox gameCheckBox;
    private CheckBox shoppingCheckBox;
    private CheckBox filmCheckBox;
    private CheckBox sportCheckBox;
    private Button submitButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.check_box);
        
        init();
        addAction();
        
    }
    
    private void init(){
        context = this;
        sleepCheckBox = (CheckBox)findViewById(R.id.sleepCheckBoxId);
        dadoudouCheckBox = (CheckBox)findViewById(R.id.dadoudouCheckBoxId);
        gameCheckBox = (CheckBox)findViewById(R.id.gameCheckBoxId);
        shoppingCheckBox = (CheckBox)findViewById(R.id.shoppingCheckBoxId);
        filmCheckBox = (CheckBox)findViewById(R.id.filmCheckBoxId);
        sportCheckBox = (CheckBox)findViewById(R.id.sportCheckBoxId);
        submitButton = (Button)findViewById(R.id.submitButtonId);
    }
    
    private void addAction(){
        sleepCheckBox.setOnCheckedChangeListener(this);
        dadoudouCheckBox.setOnCheckedChangeListener(this);
        gameCheckBox.setOnCheckedChangeListener(this);
        shoppingCheckBox.setOnCheckedChangeListener(this);
        filmCheckBox.setOnCheckedChangeListener(this);
        sportCheckBox.setOnCheckedChangeListener(this);
        submitButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                //String 字符串常量
                //StringBuffer 字符串变量（线程安全）
                //StringBuilder 字符串变量（非线程安全）
                StringBuilder sb = new StringBuilder("您的兴趣是:");
                //MyStringBuilder.Insert(6,"Beautiful ");
                //MyStringBuilder.Remove(5,7);
                //MyStringBuilder.Replace('!', '?');
                //代码示例指定可以将 MyStringBuilder对象扩充到最大 25个空白。
                //StringBuilderMyStringBuilder = new StringBuilder("Hello World!", 25);
                if(sleepCheckBox.isChecked()){
                    sb.append("睡觉 ");
                }
                if(dadoudouCheckBox.isChecked()){
                    sb.append("打豆豆 ");
                }
                if(gameCheckBox.isChecked()){
                    sb.append("游戏 ");
                }
                if(shoppingCheckBox.isChecked()){
                    sb.append("购物 ");
                }
                if(filmCheckBox.isChecked()){
                    sb.append("电影 ");
                }
                if(sportCheckBox.isChecked()){
                    sb.append("运动");
                }
                
                Toast.makeText(context, sb.toString(), Toast.LENGTH_LONG).show();
            }
        });
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        int id = buttonView.getId();
        switch(id){
        case R.id.sleepCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"睡觉\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"睡觉\"", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.dadoudouCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"打豆豆\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"打豆豆\"", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.gameCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"游戏\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"游戏\"", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.shoppingCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"购物\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"购物\"", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.filmCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"电影\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"电影\"", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.sportCheckBoxId:
            if(isChecked){
                Toast.makeText(context, "你选择了\"运动\"", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(context, "你取消选择了\"运动\"", Toast.LENGTH_SHORT).show();
            }
            break;
        }
    }
    
}

2.xml文件如下：

<?xml version="1.0" encoding="utf-8"?>
<!-- 复选框页面 -->
<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="5dp" >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="兴趣:"
        android:textSize="20sp" />

    &