Android 高效编程注意事项

核心提示：}}}11， Avoid Float尽量避免使用float类型12，Android 高效编程注意事项(3)， Some Sample Performance Numbers一些常用操作的占用时间相对比 较：操作 时间Add a local variable 1Add a member variable 4Call St

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11， Avoid Float

尽量避免使用float类型

12， Some Sample Performance Numbers

一些常用操作的占用时间相对比 较：

操作 时间

Add a local variable 1

Add a member variable 4

Call String.length() 5

Call empty static native method 5

Call empty static method 12

Call empty virtual method 12.5

Call empty interface method 15

Call Iterator:next() on a HashMap 165

Call put() on a HashMap 600

Inflate 1 View from XML 22,000

Inflate 1 LinearLayout containing 1 TextView 25,000

Inflate 1 LinearLayout containing 6 View objects 100,000

Inflate 1 LinearLayout containing 6 TextView objects 135,000

Launch an empty activity 3,000,000

这 些时间相对值，值得我们好好的权衡哦，很有帮助。