How to get light sensor value and battery level anytime for android?

Question

I am writing a program and I am able to get the light sensor value and current battery level, but only the light value changes and when the battery level changes. Is there a way to get these two values anytime? Like when a user runs my program, I would like to grab the current values right away instead of having to wait for them to change.

Answer 1

If you have the code to receive the value when it changes, you could store the value in a variable and when on every change just update the variable with a setter method. Then, whenever you need the current value anytime, just call the variable using a getter method.

So if your method looks like this

private void monitorBatteryState() {
    BroadcastReceiver battReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {

            context.unregisterReceiver(this);
            int rawlevel = intent.getIntExtra("level", -1);
            int scale = intent.getIntExtra("scale", -1);
            int status = intent.getIntExtra("status", -1);
            int health = intent.getIntExtra("health", -1);
            int level = -1;  // percentage, or -1 for unknown
            if (rawlevel >= 0 && scale > 0) {
                level = (rawlevel * 100) / scale;
            }
            setBatteryLevel(rawlevel);  // setter method.
            } 
    }

public void setBatteryLevel(rawlevel) {
  batteryLevel = rawlevel;
}

public int getBatteryLevel() {
  return rawlevel;
}

You can have a getter method to return the currentl battery level, rawlevel, and you can do the same for the light sensor value.

Answer 2

I need to display Battery Level Stats in my Android app. All i know that there is one api i.e. android.os.BatteryManager that we can use.

Wonder how can i obtain Battery Stats?