一款FPS监听工具
在你的主要Activity中打开FPS的开关
注意：避免在Application初始化中，因为内部调用了WindowManager.addView()，导致该view存在的生命周期跟Application一样长，这样回到WindowManager.removeView()失效
FastFpsMonitor.toggle()- FPS悬浮窗口拖动
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