SDK 中的 Android 电池

Question

有没有办法从 Android SDK 获取电池信息？比如剩余电池生命周期等等？我无法通过文档找到它。

Answer 1

这是一个简单的示例，可以让您了解电池的使用量、电池电压和温度。

将以下代码粘贴到 Activity 中:

@Override
public void onCreate() {
    BroadcastReceiver batteryReceiver = new BroadcastReceiver() {
        int scale = -1;
        int level = -1;
        int voltage = -1;
        int temp = -1;
        @Override
        public void onReceive(Context context, Intent intent) {
            level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
            scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
            temp = intent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, -1);
            voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE, -1);
            Log.e("BatteryManager", "level is "+level+"/"+scale+", temp is "+temp+", voltage is "+voltage);
        }
    };
    IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
    registerReceiver(batteryReceiver, filter);
}

在我的手机上，每 10 秒有以下输出:

ERROR/BatteryManager(795): level is 40/100 temp is 320, voltage is 3848

这意味着电池电量为 40%，温度为 32.0 摄氏度，电压为 3.848 伏。