com.facebook.battery.sample

Class BatteryApplication

java.lang.Object

Application

com.facebook.battery.sample.BatteryApplication

public class BatteryApplication
extends Application

An application class that maintains a singleton instance of a system wide metrics collector and demonstrates the battery metrics API as far as possible. Accordingly, this application class - records cpu time, cpu frequencies, app uptime, and network transfer - creates an "event" every time an activity is paused or resumed, as a very quick way of breaking down foreground/background sessions - saves the last session's data to disk, which is loaded when the app is started (you should really avoid IO on cold start -- I can get away with because this app is otherwise pointless).

Interesting classes are commented with a "Note" -- you can simply look around for it.

If you're running the app live, you should run adb logcat -s "BatteryApplication:*" to see the corresponding output.

Constructor Summary

Constructors

Constructor and Description
BatteryApplication()

Method Summary

Modifier and Type	Method and Description
void	onActivityCreated(Activity activity, Bundle savedInstanceState)
void	onActivityDestroyed(Activity activity)
void	onActivityPaused(Activity activity)
void	onActivityResumed(Activity activity)
void	onActivitySaveInstanceState(Activity activity, Bundle outState)
void	onActivityStarted(Activity activity)
void	onActivityStopped(Activity activity)
void	onCreate()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BatteryApplication

public BatteryApplication()

Method Detail

onCreate

public void onCreate()

onActivityCreated

public void onActivityCreated(Activity activity,
                              Bundle savedInstanceState)

onActivityStarted

public void onActivityStarted(Activity activity)

onActivityResumed

public void onActivityResumed(Activity activity)

onActivityPaused

public void onActivityPaused(Activity activity)

onActivityStopped

public void onActivityStopped(Activity activity)

onActivitySaveInstanceState

public void onActivitySaveInstanceState(Activity activity,
                                        Bundle outState)

onActivityDestroyed

public void onActivityDestroyed(Activity activity)