AndroidでのCheckBoxチェックボックス操作

public class MainActivity extends Activity {  

    //           
    private CheckBox cbx1, cbx2, cbx3, cbx4;  

    private List checkBoxs = new ArrayList();  

    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  

        cbx1 = (CheckBox) findViewById(R.id.checkBox1);  
        cbx2 = (CheckBox) findViewById(R.id.checkBox2);  
        cbx3 = (CheckBox) findViewById(R.id.checkBox3);  
        cbx4 = (CheckBox) findViewById(R.id.checkBox4);  

        //       
        cbx1.setChecked(true);  
        cbx3.setChecked(true);  

        cbx1.setOnCheckedChangeListener(listener);  
        cbx2.setOnCheckedChangeListener(listener);  
        cbx3.setOnCheckedChangeListener(listener);  
        cbx4.setOnCheckedChangeListener(listener);  

        //         
        checkBoxs.add(cbx1);  
        checkBoxs.add(cbx2);  
        checkBoxs.add(cbx3);  
        checkBoxs.add(cbx4);  
    }  

    @Override  
    public 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;  
    }  

    public void getValues(View v) {  

        String content = "";  

        for (CheckBox cbx : checkBoxs) {  
            if (cbx.isChecked()) {  
                content += cbx.getText() + "
";  
            }  
        }  

        if ("".equals(content)) {  
            content = "       ";  
        }  
        new AlertDialog.Builder(this).setMessage(content).setTitle("       ")  
                .setPositiveButton("  ", null).show();  

    }  

    CompoundButton.OnCheckedChangeListener listener = new CompoundButton.OnCheckedChangeListener() {  

        @Override  
        public void onCheckedChanged(CompoundButton buttonView,  
                boolean isChecked) {  

            CheckBox box = (CheckBox) buttonView;  
            Toast.makeText(getApplicationContext(),  
                    "    :" + isChecked + "xxxxx" + box.getText(),  
                    Toast.LENGTH_LONG).show();  
        }  
    };  
}

LayoutコンテナでCheckBoxを使用する場合は、CheckBoxを設定する場所を記録します.

public String recordCheckBoxChecked() {
            String checked = "";
            int index = 1;
            for (CheckBox cbx : checkBoxs) {
                if (cbx.isChecked()) {
                    checked = checked + index + ",";
                }
                index++;
            }
            return checked;
        }