如何计算在Android设备级FPS [英] How to calculate FPS on device level in android

问题描述

有关于如何得到FPS（每秒帧）的Andr​​oid设备的任何想法，任何人？

Anyone having any idea about how to get FPS(frame per second) of android device ?

有正在开发中设置的选项来显示FPS，但我想编写一个应用程序来这样做。

There is an option in development settings to display FPS, but I want to write an app to do the same.

据内部调用 SurfaceFlinger的 API

推荐答案

在主活动类重写的onDraw（）方法。调用 super.onDraw（）然后保存当前系统时间。在当前调用绘制和previous调用之间划出毫秒计算 delta_time 。然后用计算FPS 1000毫秒/ delta_time〜FPS

In your main Activity class override the onDraw() method. Invoke super.onDraw() then store the current system time. Calculate the delta_time in ms between the current call to draw and the previous call to draw. Then calculate FPS using 1000 ms / delta_time ~ FPS

下面是一些伪code：

Here is some pseudocode:

void onDraw(){
  super.onDraw()
  curTime = getTime();
  deltaTime = curTime - prevTime();
  aproxFps = 1000 / deltaTime;
  prevTime = curTime;
}

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