通过为ACTION_BATTERY_CHANGED注册广播接收器，究竟消耗了多少功率？ [英] Exactly how much power is drained by registering a broadcast receiver for ACTION_BATTERY_CHANGED?

问题描述

我打算编写一个应用程序，其唯一目的是监视电池电量，并在电池电量降至一定电量以下时启动它。我担心的是，这本身将消耗电池，没有人会想要使用它。

I am planning to write an app whose sole purpose will be to monitor the battery level, and launch an intent the moment it drops below a certain level. My one concern is that this itself will be a battery drain, and no one will want to use it.

所以我的问题是：使用多少会消耗掉多少电能ACTION_BATTERY_CHANGED广播接收器？有人知道我们在说多少电池寿命吗？

So my question is: Exactly how much power is drained by using the ACTION_BATTERY_CHANGED broadcast receiver? Does anyone know approximately how much battery life we're talking about?

推荐答案

我认为您不会消耗很多电量。仅当电平变化百分之一时发送此广播，

I don't think you'll drain much power. This broadcast is sent only when level changes by one percent,

例如：85％-> 86％或76％-> 75％。

For example: 85% -> 86% or 76% -> 75%.

Android OS已跟踪电池电量（它必须跟踪电池电量，以便在电池电量太低（约3-5％）时关闭手机）。因此，就电池性能而言，仅订阅该广播就不会引起用户的注意。

Android OS already tracks battery level (it has to track it in order to shutdown phone when level becomes too low, ~3-5%). So just subscribing to this broadcast shouldn't even be noticeable to the user (in terms of battery performance).

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