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+# 通过 ADB Shell 调节音量
+
+## 方法一
+
+可以通过模拟音量建的方法进行调节：
+
+```bash
+adb shell input keyevent
+```
+
+## 方法二
+
+```bash
+adb shell media volume --stream <n> --adj <lower|same|raise>
+```
+
+一般而言，stream 有如下配置
+
+* stream0=STREAM_VOICE_CALL
+* stream1=STREAM_SYSTEM
+* stream2=STREAM_RING
+* stream4=STREAM_ALARM
+* stream5=STREAM_NOTIFICATION
+* stream6=STREAM_BLUETOOTH_SCO
+* stream7=STREAM_SYSTEM_ENFORCED
+* stream8=STREAM_DTMF
+* stream9=STREAM_TTS
+* stream10=STREAM_ACCESSIBILITY
+* stream11=STREAM_VR_TTS
+* stream12=STREAM_NAVI_TTS
+* stream13=STREAM_TUNER
+* stream14=STREAM_ICALL
+* stream15=STREAM_CARPLAY_ALT
+* stream16=STREAM_MOIVE
+* stream17=STREAM_USB_MUSIC
+* stream18=STREAM_QQ_MUSIC
+* stream19=STREAM_BT_MUSIC
+* stream20=STREAM_XMLY_MUSIC