Android - 是否可以访问原始电容输入数据？
[英]Android - Is it possible to access raw capacitive input data?
问题描述
Does the Android platform have a public API for accessing the raw capacitive data coming from the touch screen? 
Android平台是否有用于访问来自触摸屏的原始电容数据的公共API？
The multi-touch input points are derived from a basic two-dimensional grid of binary capacitive data from the touch screen. 多点触摸输入点源自来自触摸屏的二进制电容数据的基本二维网格。 But is this data somehow accessible for use in an Android app? 但是这些数据是否可以在Android应用中使用？
Apparently iOS has a private API for this ( view here ), but it would surely not pass the approval process. 显然iOS有一个私有API（ 在这里查看 ），但肯定不会通过批准过程。 I'm hoping Android would be more open to this usage. 我希望Android对这种用法更加开放。
1 个解决方案
解决方案1
0
Not an answer, but maybe something to look further into. 不是答案，但可能需要进一步研究。
Here are the kernel sources to various touch screen drivers. 以下是各种触摸屏驱动程序的内核源代码。 From scanning them a bit it doesn't seem that the kernel gives API access to this information, 从扫描它们看起来内核似乎没有API访问这些信息，
https://android.googlesource.com/kernel/common/+/android-3.4/drivers/input/touchscreen/ https://android.googlesource.com/kernel/common/+/android-3.4/drivers/input/touchscreen/
Some devices seem to report "raw data", eg see nexio_read_data in usbtouchscreen.c (seems oldschool IR type touch screen, not capacitive matrix) 有些设备似乎报告“原始数据”，如见nexio_read_data在usbtouchscreen.c （好像老校友红外式触摸屏，电容式不矩阵）
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