rkpx30-android 8.1 将鼠标右键改成返回功能

在下面的路径中：

framework\native\services\inputflinger\InputReader.cpp

在InputReader.cpp代码中做如下修改：

uint32_t CursorButtonAccumulator::getButtonState() const {
    uint32_t result = 0;
    if (mBtnOk) {
       result |= AMOTION_EVENT_BUTTON_PRIMARY;
    }
    if (mBtnLeft) {
        result |= AMOTION_EVENT_BUTTON_PRIMARY;
    }
    if (mBtnRight) {
        char targetProduct[PROPERTY_VALUE_MAX] = {0};
        property_get("ro.target.product", targetProduct, "");
        if (strcmp(targetProduct, "box") == 0) {
            result |= AMOTION_EVENT_BUTTON_BACK;
        } else {
            //修改这里
           //result |= AMOTION_EVENT_BUTTON_SECONDARY;
            result |= AMOTION_EVENT_BUTTON_BACK; 
        }
    }
    if (mBtnMiddle) {
        result |= AMOTION_EVENT_BUTTON_TERTIARY;
    }
    if (mBtnBack || mBtnSide) {
        result |= AMOTION_EVENT_BUTTON_BACK;
    }
    if (mBtnForward || mBtnExtra) {
        result |= AMOTION_EVENT_BUTTON_FORWARD;
    }
    return result;
}