安卓BatteryManager.isCharging()始终为假

Question

我的代码：

binding.showButton.setOnClickListener {
    val batteryManager = requireContext().getSystemService(Context.BATTERY_SERVICE) as BatteryManager

    Log.v("xxx", "isCharging: ${batteryManager.isCharging}")    //always false
}

Answer 1

您可以使用广播：

Intent batteryBroadcast = context.registerReceiver(null,
                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
        int batteryLevel = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
        boolean isCharging = batteryBroadcast.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) != 0;