流畅度优化

流畅度优化 - 渲染与内存监控建立完整的性能监控和优化体系帧率监控实现自定义Choreographer.FrameCallback监控掉帧情况内存优化实现Glide图片加载优化策略根据设备内存等级动态调整缓存大小采用ARGB_8888与RGB_565混合格式在质量与内存间取得平衡实现大图分块加载和滑动时暂停加载机制启动渲染优化通过ViewStub延迟加载复杂布局使用ConstraintLayout减少布局层级classPerformanceMonitor{// 帧率监控privateval frameMonitorobject:Choreographer.FrameCallback{override fundoFrame(frameTimeNanos:Long){val currentTimeSystem.currentTimeMillis()if(lastFrameTime0){val frameIntervalcurrentTime-lastFrameTimeif(frameInterval16.67){// 60FPS对应16.67msLog.w(Performance,Frame dropped: $frameInterval ms)reportJank(frameInterval)}}lastFrameTimecurrentTimeChoreographer.getInstance().postFrameCallback(this)}}// 内存监控funsetupMemoryMonitor(){val activityManagergetSystemService(ACTIVITY_SERVICE)asActivityManagerval memoryInfoActivityManager.MemoryInfo()activityManager.getMemoryInfo(memoryInfo)// 根据内存状态调整Glide缓存val memoryClassactivityManager.memoryClass val cacheSizewhen{memoryInfo.lowMemory-memoryClass/8*1024*1024memoryClass256-memoryClass/4*1024*1024else-memoryClass/2*1024*1024}Glide.get(this).apply{// 设置内存缓存大小memoryCache?.resize(cacheSize)}}}