Android 设计思想

核心提示：radio, be sure to handle error conditions gracefully, and only fetch what you need. For example, don’t constantly retry a network operation if one failed. If it

radio, be sure to handle error conditions gracefully, and only fetch what you need. For example, don’t constantly retry a network operation if one failed. If it failed once, it’s likely because the user has no reception, so it’s probably going to fail again if you try right away; all you’ll do is waste battery power.

Users are pretty smart: if your program is power-hungry, you can count on them noticing. The only thing you can be sure of at that point is that your program won’t stay installed very long.