[移动开发]Android 获取当前手机电量(Java、Kotlin)

获取方法如下

Java写法：

private int getPhoneBattery(Context context) {
	int level = 0;
	Intent batteryInfoIntent = context.getApplicationContext().registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    level = batteryInfoIntent.getIntExtra("level", 0);
    int batterySum = batteryInfoIntent.getIntExtra("scale", 100);
    return 100 * level / batterySum;
}

Kotlin写法

private fun getPhoneBattery(context: Context): Int {
    var level = 0
    var batterySum = 100
    val batteryInfoIntent: Intent? = context.applicationContext.registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
    if (batteryInfoIntent != null) {
        level = batteryInfoIntent.getIntExtra("level", 0)
        batterySum = batteryInfoIntent.getIntExtra("scale", 100)
    }
    return 100 * level / batterySum
}