内存
- 目的: 无内存泄漏, 降低内存开销, 避免内存抖动; 减少非并发GC的运行次数
- 工具: LeakCanary, Memory Monitor, MAT, Allocation Tracker
复用
Object Pool, BitmapFactory.Options.inBitmap, Cache, onDraw/for, convertView回收
register/unregister, Cursor/Bitmap/WebView/TypeArray, Handler, onTrimMemory减少开销
SparseArray, no-Enum, Bitmap-scale/format扩大内存
largeHeap, mutil-process
View
- 目的: 界面流畅性, 无掉帧, 避免卡顿
- 工具: Show GPU Overdraw, Profile GPU rendering, Layout Inspector, Hierarchy Viewer, Traceview,
重用
include过度绘制
setWindowDrawable(null), merge, canvas.clipRect渲染速度, Jank
viewStub, merge, double layout taxation(RelativeLayout)
启动
- 目的: 加快启动速度, 避免白屏
- 工具: Systrace
