1.xxxx\build\make\core\main.mk（User 版本默認打開usb調試）

endif # !user_variantifeq (true,$(strip $(enable_target_debugging)))# Target is more debuggable and adbd is on by defaultADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1# Enable Dalvik lock contention logging.ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.lockprof.threshold=500# Include the debugging/testing OTA keys in this build.INCLUDE_TEST_OTA_KEYS := true else # !enable_target_debugging# Target is less debuggable and adbd is off by defaultADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1 ##0->1 endif # !enable_target_debugging## eng ##

2.xxxx\vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\usb\UsbDebuggingActivity.java（默認關閉adb認證）

@Overridepublic void onReceive(Context content, Intent intent) {String action = intent.getAction();if (!UsbManager.ACTION_USB_STATE.equals(action)) {return;}// boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);boolean connected = false;if (!connected) {mActivity.finish();}try {IBinder b = ServiceManager.getService(USB_SERVICE);IUsbManager service = IUsbManager.Stub.asInterface(b);service.allowUsbDebugging(true, mKey); // service.clearUsbDebuggingKeys();} catch (Exception e) {Log.e(TAG, "Unable to notify Usb service", e);} }}

總結

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