Android x86 4.4-r5 分支修改笔记——系统定制

修改默认语言（系统本土化）

asop/build/target/product/core_base.mk
PRODUCT_PROPERTY_OVERRIDES := \
    ro.config.notification_sound=OnTheHunt.ogg \
    ro.config.alarm_alert=Alarm_Classic.ogg \
    persist.sys.language=zh \
    persist.sys.country=CN

不休眠

frameworks/base/packages/SettingsProvider/res/values/defaults.xml
里面60000改成-1，就是不进入休眠。

<integer name="def_screen_off_timeout">-1integer>

还要修改以下：
修改 /frameworks/base/services/java/com/android/server/power/PowerManagerService.java文件
getScreenOffTimeoutLocked()函数:

if (mUserActivityTimeoutOverrideFromWindowManager >= 0) {
            timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager);
        }
+        if(mScreenOffTimeoutSetting < 0)
+    return mMaximumScreenOffTimeoutFromDeviceAdmin;
        return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT);

去掉导航栏和状态栏

/frameworks/base/packages/SystemUI/src/com/android/systemui/SystemUIService.java

 private final Class[] SERVICES = new Class[] {
            com.android.systemui.recent.Recents.class,
//            com.android.systemui.statusbar.SystemBars.class,
            com.android.systemui.usb.StorageNotification.class,
            com.android.systemui.power.PowerUI.class,
            com.android.systemui.media.RingtonePlayer.class,
            com.android.systemui.settings.SettingsUI.class,
        };

usb主机permision确认对话框

/frameworks/base/services/java/com/android/server/usb/UsbSettingsManager.java

默认返回true

    public boolean hasPermission(UsbDevice device) {
        synchronized (mLock) {
//            int uid = Binder.getCallingUid();
//            if (uid == Process.SYSTEM_UID) {
//                return true;
//            }
//            SparseBooleanArray uidList = mDevicePermissionMap.get(device.getDeviceName());
//            if (uidList == null) {
//                return false;
//            }
//            return uidList.get(uid);
            return true;
        }
    }

    public boolean hasPermission(UsbAccessory accessory) {
        synchronized (mLock) {
//            int uid = Binder.getCallingUid();
//            if (uid == Process.SYSTEM_UID) {
//                return true;
//            }
//            SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
//            if (uidList == null) {
//                return false;
//            }
//            return uidList.get(uid);
            return true;
        }
    }