我正在开发Android Wear Watch Face,我想显示手表和手机的电池百分比.我设法得到了Watch的百分比,但我是Java&的新手. Android所以请通过解释轻松上手.private String getBatteryInfoPhone() {float retVal = 0;IntentFilter iFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);Intent batteryStatus = registerReceiver(null, iFilter);int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);int le...