android 8.1 将鼠标右键点击事件改为点击后返回功能

最新推荐文章于 2025-07-23 10:55:30 发布

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本文深入解析了framework ativeservicesinputflingerInputReader.cpp中的getButtonState()函数实现细节，介绍了不同按钮状态是如何映射到AMOTION_EVENT_BUTTON系列常量的。

framework\native\services\inputflinger\InputReader.cpp中

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;
}

参考：https://blog.youkuaiyun.com/xct841990555/article/details/80426451