在Android下实现鼠标右键返回

在frameworks/base/services/input/InputReader.cpp文件下修改
uint32_t CursorButtonAccumulator::getButtonState() const {
uint32_t result = 0;
if (mBtnLeft) {
result |= AMOTION_EVENT_BUTTON_PRIMARY;
}
if (mBtnRight) {
 + result |= AMOTION_EVENT_BUTTON_BACK;</span>
}
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;