Android USB debugging 功能失效
1. 修改按Builder number 的次數成為開發者:
packages/app/setings/DeviceInfoSettings.java
static final int TAPS_TO_BE_A_DEVELOPER = 7;
DevelopmentSettings.PREF_SHOW = true;
2. packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java
mEnableAdb = "USB debugging" check box
"Allow development settings?"
mAdbDialog = "Allow USB debugging?" dialog box
mAdbKeysDialog = "Revoke access to USB debugging from all computers you\'ve previously authorized?"
updateVerifyAppsOverUsbOptions()
private void updateVerifyAppsOverUsbOptions() {
updateCheckBox(mVerifyAppsOverUsb, Settings.Global.getInt(getActivity().getContentResolver(),
Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, 1) != 0);
mVerifyAppsOverUsb.setEnabled(enableVerifierSetting());
}
mVerifyAppsOverUsb
mVerifyAppsOverUsb = findAndInitCheckboxPref(VERIFY_APPS_OVER_USB_KEY);
"clear_adb_keys" 不見了
mClearAdbKeys = findPreference(CLEAR_ADB_KEYS);
if (!SystemProperties.getBoolean("ro.adb.secure", false)) {
if (debugDebuggingCategory != null) {
debugDebuggingCategory.removePreference(mClearAdbKeys);
}
}
The ADB host authentication functionality is enabled by default when the ro.adb.secure
system property is set to 1, and there is no way to disable it via the system settings interface.
/default.prop
doesn't set ro.adb.secure
current default.prop:
ro.secure=1
ro.allow.mock.location=0
ro.debuggable=1
persist.sys.usb.config=adb
but it should be something like this:
ro.secure=1
ro.allow.mock.location=0
ro.debuggable=0
persist.sys.usb.config=mtp
ro.adb.secure=1
How to set ro.adb.secure=1 ?
PRODUCT_DEFAULT_PROPERTY_OVERRIDES := \
$(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
------------------------
Solution:
1. 修改 ./build/core/main.mk
ADDITIONAL_DEFAULT_PROPERTIES += ro.secure=1
+ ADDITIONAL_DEFAULT_PROPERTIES += ro.adb.secure=1
2. 修改 ./device/asus/flo/device.mk
+ PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
+ persist.sys.usb.config=mtp
重build BSP, 觀察 root/default.prop 內容:
root$ cat default.prop
#
# ADDITIONAL_DEFAULT_PROPERTIES
#
ro.secure=1
ro.adb.secure=1
ro.allow.mock.location=0
ro.debuggable=1
persist.sys.usb.config=mtp,adb
燒到Nexus 平版, Debug 可以認到了
更多相关文章
- 代码中设置drawableleft
- android 3.0 隐藏 系统标题栏
- Android开发中activity切换动画的实现
- Android(安卓)学习 笔记_05. 文件下载
- Android中直播视频技术探究之—摄像头Camera视频源数据采集解析
- 技术博客汇总
- android 2.3 wifi (一)
- AndRoid Notification的清空和修改
- Android中的Chronometer