Creating A Temperature-sensing Android App That Runs In The Background After Activation

I am developing an Android application that will keep track of the temperature of the battery of the phone. When the temperature of the battery exceeds some certain value, another

Solution 1:

There's a sensor. For Android:

http://developer.android.com/reference/android/os/BatteryManager.html#EXTRA_TEMPERATURE

Also relevant: Android Hardware Battery temperature, where is the sensor?