设置自动亮度

Question

我正在尝试设置一个复选框来控制亮度。到目前为止，能够识别是否启用了自动亮度，但无法将其关闭或根据是否启用来关闭。我写了这段代码：

private static final String SCREEN_BRIGHTNESS_MODE = "Settings.System.SCREEN_BRIGHTNESS_MODE";
private static final int SCREEN_BRIGHTNESS_MODE_MANUAL = 0;
private static final int SCREEN_BRIGHTNESS_MODE_AUTOMATIC = 1; 

try {
        enabled = Settings.System.getInt(contentResolver, Settings.System.SCREEN_BRIGHTNESS_MODE);
    } catch (SettingNotFoundException e1) {
        // TODO Auto-generated catch block
        enabled = 0;
        e1.printStackTrace();

    } 

    if(enabled==SCREEN_BRIGHTNESS_MODE_MANUAL) {

        ((CheckBox)auto).setChecked(false);
        brightbar.setEnabled(true);

        }

        else if(enabled==SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {

            ((CheckBox)auto).setChecked(true);
            brightbar.setEnabled(false);

        }

    auto.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if(enabled==SCREEN_BRIGHTNESS_MODE_MANUAL){
                Settings.System.putInt(contentResolver, SCREEN_BRIGHTNESS_MODE, SCREEN_BRIGHTNESS_MODE_AUTOMATIC);
                brightbar.setEnabled(false);
            }else if(enabled==SCREEN_BRIGHTNESS_MODE_AUTOMATIC){
                Settings.System.putInt(contentResolver, SCREEN_BRIGHTNESS_MODE, SCREEN_BRIGHTNESS_MODE_MANUAL);
                brightbar.setEnabled(true);
            }

        }
    });

如果活动模式自动识别它已打开，但如果我单击复选框以禁用它不起作用，从某种意义上说它将其关闭。相反，如果自动亮度被禁用，我点击复选框激活它，它就会起作用，因为它会激活它。