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1.查看系统亮度值（例子）

// 设置亮度值    Settings.System.putInt(mContext.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, value);    // 查看系统亮度值    public static int getBrightnessMode(Context context) {        return Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);    }

2. adb shell 命令使用

2.1 获取key值的数值

• adb shell settings get system “screen_brightness”

相当于 Settings.System.getInt 的命令效果

adb shell settings get system "screen_brightness"55

2.2 设置key值的数值

• adb shell settings put system “screen_brightness” 100

相当于 Settings.System.putInt 的命令效果

3. key值来源

frameworks\base\core\java\android\provider\Settings.java

/**         * The screen backlight brightness between 0 and 255.         */        public static final String SCREEN_BRIGHTNESS = "screen_brightness";

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