Added simple Battery Logger

CocoaneticsBench/Battery Log/Battery Log-Prefix.pch

@@ -0,0 +1,14 @@
+//
+// Prefix header for all source files of the 'Battery Log' target in the 'Battery Log' project
+//
+
+#import <Availability.h>
+
+#ifndef __IPHONE_4_0
+#warning "This project uses features only available in iOS SDK 4.0 and later."
+#endif
+
+#ifdef __OBJC__
+	#import <UIKit/UIKit.h>
+	#import <Foundation/Foundation.h>
+#endif

CocoaneticsBench/Battery Log/Source/AppDelegate.m

@@ -9,6 +9,7 @@
 #import "AppDelegate.h"
 
 #import "ViewController.h"
+#import "BatteryLogger.h"
 
 @implementation AppDelegate
 
@@ -17,13 +18,10 @@ @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
+	[[BatteryLogger sharedLogger] startLogging];
+
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
-    // Override point for customization after application launch.
-	if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
-	    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController_iPhone" bundle:nil];
-	} else {
-	    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController_iPad" bundle:nil];
-	}
+	self.viewController = [[ViewController alloc] init];
 	self.window.rootViewController = self.viewController;
     [self.window makeKeyAndVisible];
     return YES;

CocoaneticsBench/Battery Log/Source/BatteryLogger.h

@@ -10,4 +10,9 @@
 
 @interface BatteryLogger : NSObject
 
++ (BatteryLogger *)sharedLogger;
+
+- (void)startLogging;
+- (void)stopLogging;
+
 @end

CocoaneticsBench/Battery Log/Source/BatteryLogger.m

@@ -8,6 +8,105 @@
 
 #import "BatteryLogger.h"
 
+@interface BatteryLogger ()
+
+- (void)batteryLevelChanged:(NSNotification *)notification;
+- (void)batteryStateChanged:(NSNotification *)notification;
+
+@end
+
+
 @implementation BatteryLogger
+{
+}
+
+
++ (BatteryLogger *)sharedLogger
+{
+	static BatteryLogger *_sharedInstance = nil;
+
+	static dispatch_once_t onceToken;
+	dispatch_once(&onceToken, ^{
+		_sharedInstance = [[BatteryLogger alloc] init];
+	});
+
+	return _sharedInstance;
+}
+
+- (void)startLogging
+{
+	UIDevice *device = [UIDevice currentDevice];
+
+	if ([device isBatteryMonitoringEnabled])
+	{
+		// already logging
+		return;
+	}
+
+	[device setBatteryMonitoringEnabled:YES];
+
+	NSNotificationCenter *notifications = [NSNotificationCenter defaultCenter];
+
+	[notifications addObserver:self selector:@selector(batteryStateChanged:) name:UIDeviceBatteryStateDidChangeNotification object:nil];
+	[notifications addObserver:self selector:@selector(batteryLevelChanged:) name:UIDeviceBatteryLevelDidChangeNotification object:nil];
+
+	// log initial
+	[self batteryStateChanged:nil];
+	[self batteryLevelChanged:nil];
+}
+
+- (void)stopLogging
+{
+	UIDevice *device = [UIDevice currentDevice];
+
+	if (![device isBatteryMonitoringEnabled])
+	{
+		// already not logging
+		return;
+	}
+
+
+	[[UIDevice currentDevice] setBatteryMonitoringEnabled:NO];
+
+	NSNotificationCenter *notifications = [NSNotificationCenter defaultCenter];
+
+	[notifications removeObserver:self name:UIDeviceBatteryStateDidChangeNotification object:nil];
+	[notifications removeObserver:self name:UIDeviceBatteryLevelDidChangeNotification object:nil];
+}
+
+#pragma mark Notifications
+- (void)batteryStateChanged:(NSNotification *)notification
+{
+	UIDevice *device = [UIDevice currentDevice];
+
+	switch (device.batteryState) 
+	{
+		case UIDeviceBatteryStateUnknown:
+			NSLog(@"State: Unknown");
+			break;
+
+		case UIDeviceBatteryStateUnplugged:
+			NSLog(@"State: Unplugged");
+			break;
+
+		case UIDeviceBatteryStateCharging:
+			NSLog(@"State: Charging");
+			break;
+
+		case UIDeviceBatteryStateFull:
+			NSLog(@"State: Full");
+			break;
+	}
+}
+
+- (void)batteryLevelChanged:(NSNotification *)notification
+{
+	UIDevice *device = [UIDevice currentDevice];
+
+	NSLog(@"Level: %0.2f%%", device.batteryLevel*100.0f);
+}
+
+
+
 
 @end