在/dev/input/eventX中编写事件所需的命令是什么?

I'm developing an android app that needs to send touch events to /dev/input/eventX. I know the C code structure to do such a thing is the following:

我正在开发一个android应用程序，需要将触摸事件发送到/dev/input/ eventx。我知道C代码结构做这样的事情如下:

struct input_event {
    struct timeval time;
    unsigned short type;
    unsigned short code;
    unsigned int value;
};

To use such a code, I need to set NDK. Instead, I want to run equivalent linux commands using Runtime.getRunTime.exec () in android without the need to use NDK. Is there any way to do that?

要使用这样的代码，我需要设置NDK。相反，我希望使用Runtime.getRunTime来运行等效的linux命令。exec()在android中不需要使用NDK。有什么办法吗?

If no, what are the rest of C code needed to send an event? For example, how can I send a touch event at x=200 and y=300 to event0? I searched and I didn't find a clear solution.

如果没有，发送事件所需的其余C代码是什么?例如，如何将x=200和y=300处的触摸事件发送给event0?我搜索了一下，没有找到一个明确的解决办法。

Thanks.

谢谢。

1 个解决方案

#1

I'm not clear about why you need to send event to /dev/input/eventX directly. But if it can send via adb, you can inject many type events to device.

我不清楚为什么需要将事件直接发送到/dev/input/eventX。但是如果它可以通过adb发送，则可以向设备注入许多类型事件。

Try this on your computer:

在你的电脑上试试这个:

adb shell input tap 200 300

adb shell输入tap 200 300

Or this on your android device shell:

或者你的安卓设备外壳:

input tap 200 300

输入利用200 300

But it has a high delay because of outside injection.

但由于外部注射存在较大的延迟。

More info about input command see here.

有关输入命令的更多信息请参见这里。

Usage: input [<source>] <command> [<arg>...]

The sources are: 
      mouse
      keyboard
      joystick
      touchnavigation
      touchpad
      trackball
      stylus
      dpad
      touchscreen
      gamepad

The commands and default sources are:
      text <string> (Default: touchscreen)
      keyevent [--longpress] <key code number or name> ... (Default: keyboard)
      tap <x> <y> (Default: touchscreen)
      swipe <x1> <y1> <x2> <y2> [duration(ms)] (Default: touchscreen)
      press (Default: trackball)
      roll <dx> <dy> (Default: trackball)

#1