# X系列\_设置屏幕亮度

通过adb指令设置

```bash
# 获取当前亮度模式：返回 1(自动) 或 0(手动)
adb shell settings get system screen_brightness_mode

# 获取当前的亮度数值 (范围 0-255)
adb shell settings get system screen_brightness

# 设置为自动亮度模式 (值为 1)
adb shell settings put system screen_brightness_mode 1

# 设置为手动亮度模式 (值为 0)
adb shell settings put system screen_brightness_mode 0

# 设置屏幕亮度(范围 0-255，数值越大越亮)，慎用，亮度太大可能会导致重启
adb shell settings put system screen_brightness 60
```

通过api设置

```kotlin
//首先需要在AndroidManifest.xml文件中加入权限
<uses-permission android:name="android.permission.WRITE_SETTINGS" />

// 获取当前亮度模式：返回 1(自动) 或 0(手动)
val mode = Settings.System.getInt(
    context.contentResolver,
    Settings.System.SCREEN_BRIGHTNESS_MODE,
    Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL
);

//获取当前的亮度数值 (范围 0-255)
val brightness = Settings.System.getInt(
    context.contentResolver,
    Settings.System.SCREEN_BRIGHTNESS
)

//设置为亮度模式1(自动) 或 0(手动)
Settings.System.putInt(
    context.contentResolver,
    Settings.System.SCREEN_BRIGHTNESS_MODE,
    mode
)

//设置屏幕亮度(范围 0-255，数值越大越亮)，慎用，亮度太大可能会导致重启
var light = lightValue
if (lightValue <= 0) {
    light = 1
}
if (lightValue > 255) {
    light = 255
}
Settings.System.putInt(
    context.contentResolver, 
    Settings.System.SCREEN_BRIGHTNESS, 
    light
)
```


---

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