监视媒体设备上的HDMI状态

时间:2019-02-23 14:07:39

标签: android hdmi

我想允许我的apk在应用程序运行时监视HDMI设备状态。如果屏幕关闭或断开,我希望应用程序将HDMI状态写回到sql数据库。 这是我到目前为止的内容:

/**
 * Checks device switch files to see if an HDMI device/MHL device is plugged in, returning true if so.
 */
private boolean isHdmiSwitchSet() {

    // The file '/sys/devices/virtual/switch/hdmi/state' holds an int -- if it's 1 then an HDMI device is connected.
    // An alternative file to check is '/sys/class/switch/hdmi/state' which exists instead on certain devices.
    File switchFile = new File("/sys/devices/virtual/switch/hdmi/state");
    if (!switchFile.exists()) {
        switchFile = new File("/sys/class/switch/hdmi/state");
    }
    try {
        Scanner switchFileScanner = new Scanner(switchFile);
        int switchValue = switchFileScanner.nextInt();
        switchFileScanner.close();
        return switchValue > 0;
    } catch (Exception e) {
        return false;
    }
}

我将如何将这些值写入远程服务器上的SQL数据库?

0 个答案:

没有答案