Android的BatteryManager所有财产检索调用返回0 [英] Android BatteryManager returning 0 for all property-retrieval calls

问题描述

我在遇到麻烦尝试访问大部分来自Android设备的电池的统计数据，如 BATTERY_PROPERTY_CAPACITY ， BATTERY_PROPERTY_CHARGE_COUNTER 或 BATTERY_PROPERTY_CURRENT_AVERAGE 。这些属性都清楚地记录在这里： http://developer.android.com/reference /android/os/BatteryManager.html

I'm having trouble trying to access most of the stats from my Android device's battery such as BATTERY_PROPERTY_CAPACITY, BATTERY_PROPERTY_CHARGE_COUNTER or BATTERY_PROPERTY_CURRENT_AVERAGE. These properties are all clearly documented here: http://developer.android.com/reference/android/os/BatteryManager.html

我有我的清单中声明如下权限：

I have the following permission declared on my manifest:

<uses-permission android:name="android.permission.BATTERY_STATS" />

我有一个非空BatteryManager例如：

I have a non-null BatteryManager instance:

mBatteryManager = (BatteryManager) getSystemService(BATTERY_SERVICE);

和每当我试图找回这些统计数据：

And whenever I try to retrieve these stats:

double remainingCapacity = mBatteryManager.getIntProperty(
            BatteryManager.BATTERY_PROPERTY_CAPACITY);
double batteryCapacityMicroAh = mBatteryManager.getIntProperty(
            BatteryManager.BATTERY_PROPERTY_CHARGE_COUNTER);
double averageCurrentMicroA = mBatteryManager.getIntProperty(
            BatteryManager.BATTERY_PROPERTY_CURRENT_AVERAGE);

结果都是0所有这些的。总是，没有失败，0。我已经试过这个模拟器上，实际的设备，我已经想到了一切都无法修改我的结果。

The results are all 0 for all of those. Always, without fail, 0. I've tried this on an emulator, an actual device, and everything I've thought of has failed to modify my results.

我会非常AP preciate任何帮助。最后，我想要做的就是计算出剩余达到其完全充电（充电时）的设备的时间。先谢谢了。

I'd greatly appreciate any help. Ultimately, what I'm trying to do is calculate the time remaining for a device to reach its full charge (while charging). Thanks in advance.

推荐答案

不知道这是给你的任何帮助了，但只有具有电池电量计（的 https://source.android.com/devices/tech/power/device.html ）能够回报一些值您正在寻找。据我所知，只有Nexus的6,9，和10给你正在寻找所有三个值，使用Nexus 5只给 BATTERY_PROPERTY_CAPACITY 。

Not sure if this is any help for you now, but only phones that have a battery fuel gauge (https://source.android.com/devices/tech/power/device.html) can report back some of the values you are looking for. AFAIK, only the Nexus 6, 9, and 10 gives all three values you are looking for, with Nexus 5 giving only BATTERY_PROPERTY_CAPACITY.

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