查询多点触控支持的具体指针数量

发布于 2024-11-10 14:31:02 字数 551 浏览 0 评论 0原文

有没有办法以编程方式获得触摸屏可以同时检测到的最大单个手指数量？

我只能找到 FEATURE_TOUCHSCREEN_MULTITOUCH、FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT 和 FEATURE_TOUCHSCREEN_MULTITOUCH_JAZZHAND，它们仅告诉我硬件是否支持“2 个或更多”和“ 5个或更多”，分别。据我所知，没有办法获得支持的确切数量的手指。

我已经能够通过以下代码发现我的 Nexus S 支持最多 5 个手指：

public boolean onTouchEvent(MotionEvent event) {
    Log.d("multitouch", event.getPointerCount() + " fingers detected");
    return super.onTouchEvent(event);
}

但我希望能够从某种环境变量中获取此数据，这样我的用户就不必去通过“检测屏幕”只是为了获取这些信息。

原文

Is there any way to get programatically the maximum number of individual fingers that the touch screen can detect simultaneously?

I've only been able to find FEATURE_TOUCHSCREEN_MULTITOUCH, FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT and FEATURE_TOUCHSCREEN_MULTITOUCH_JAZZHAND, which only tell me if the hardware supports "2 or more" and "5 or more", respectively.
As far as I've seen, there's no way to get the exact number of fingers supported.

I've been able to find out that my Nexus S supports a maximum of 5 fingers with the following code:

public boolean onTouchEvent(MotionEvent event) {
    Log.d("multitouch", event.getPointerCount() + " fingers detected");
    return super.onTouchEvent(event);
}

But I'd like to be able to get this data from some sort of environment variable so my users won't have to go through a "detection screen" just to get this information.

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