12.checkbox改变时让字改变

public class Setup4Activity extends BaseSetupActivity {
	private CheckBox cbProtect;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_setup4);
		cbProtect = (CheckBox) findViewById(R.id.cb_protect);
		boolean protect = mPref.getBoolean("protect", false);
		// 根据sp保存的状态,更新checkbox
		if (protect) {
			cbProtect.setText("防盗保护已经开启");
			cbProtect.setChecked(true);
		} else {
			cbProtect.setText("防盗保护没有开启");
			cbProtect.setChecked(false);
		}
		// 当checkbox发生变化时,回调此方法
		cbProtect.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			@Override
			public void onCheckedChanged(CompoundButton buttonView,
					boolean isChecked) {
				if (isChecked) {
					cbProtect.setText("防盗保护已经开启");
					mPref.edit().putBoolean("protect", true).commit();
				} else {
					cbProtect.setText("防盗保护没有开启");
					mPref.edit().putBoolean("protect", false).commit();
				}
			}
		});
	}