Elton's Blog

#import "BasicExampleAppDelegate.h"
 
#import "GANTracker.h"
 
// Dispatch period in seconds
 static const NSInteger kGANDispatchPeriodSec = 10;
 
 @implementation BasicExampleAppDelegate
 
 @synthesize window = window_;
 
 - (void)applicationDidFinishLaunching:(UIApplication *)application {
   // **************************************************************************
   // PLEASE REPLACE WITH YOUR ACCOUNT DETAILS.
   // **************************************************************************
    [[GANTracker sharedTracker] startTrackerWithAccountID:@"UA-0000000-1"
                                          dispatchPeriod:kGANDispatchPeriodSec
                                                delegate:nil];
   NSError *error;
   if (![[GANTracker sharedTracker] trackEvent:@"my_category"
                                        action:@"my_action"
                                         label:@"my_label"
                                         value:-1
                                     withError:&error]) {
     // Handle error here
   }
 
   if (![[GANTracker sharedTracker] trackPageview:@"/app_entry_point"
                                        withError:&error]) {
     // Handle error here
   }
 
   [window_ makeKeyAndVisible];
 }
 
 - (void)dealloc {
   [[GANTracker sharedTracker] stopTracker];
   [window_ release];
   [super dealloc];
 }
 
 @end

AVAudioPlayer  *player;
NSString       *path;
 
// 设置音乐文件路径
path = [[NSBundle mainBundle] pathForResource:@"sound-file" ofType:@"mp3"];
 
// 判断是否可以访问这个文件
if ([[NSFileManager defaultManager] fileExistsAtPath:path]) 
{    
  // 设置 player
  player = [[AVAudioPlayer alloc] initWithContentsOfURL:
     [NSURL fileURLWithPath:path] error:&error];
 
  // 调节音量 (范围从0到1)
  player.volume = 0.4f;
 
  // 准备buffer，减少播放延时的时间      
  [player prepareToPlay];
 
  // 设置播放次数，0为播放一次，负数为循环播放
  [player setNumberOfLoops:0];
 
  [player play];    
 
}    
 
...
 
// 清理工作
if (player != nil)
{
  if (player.isPlaying == YES)
    [player stop];
  [player release];
}

void UIImageWriteToSavedPhotosAlbum (
   UIImage  *image,
   id       completionTarget,
   SEL      completionSelector,
   void     *contextInfo
);

- (void) image: (UIImage *) image
    didFinishSavingWithError: (NSError *) error
    contextInfo: (void *) contextInfo;

// 要保存的图片
  UIImage *img = [UIImage imageNamed:@"ImageName.png"];  
 
  // 保存图片到相册中
  UIImageWriteToSavedPhotosAlbum(img, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error 
             contextInfo:(void *)contextInfo
  {
    // Was there an error?
    if (error != NULL)
    {
      // Show error message...
 
    }
    else  // No errors
    {
      // Show message image successfully saved
    }
  }

NSString *deviceType = [UIDevice currentDevice].model;

NSString *deviceType = [UIDevice currentDevice].modellocalizedModel;
NSLog(@"type: %@", deviceType);

[ UIApp openURL: [ NSURL URLWithString:@"http://www.apple.com" ] ];

[ UIApp openURL: [ NSURL URLWithString:@"mailto:apple@mac.com?Subject=hello" ] ];

@interface MainViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
  UITableView *theTableView;
}

- (id)init
{
  if (self = [super init]) 
  {
    self.view = [[[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]] autorelease];
 
    // Setup the background
    UIImageView *background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"background.png"]];
    [self.view addSubview:background];
    [background release];
 
    // Create table view
    theTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 11, 320, 460) style: UITableViewStylePlain];
    [theTableView setDelegate:self];
    [theTableView setDataSource:self];
 
    // This should be set to work with the image height
    [theTableView setRowHeight:68];
 
    // Transparent, so we can see the background
    [theTableView setBackgroundColor:[UIColor clearColor]];
    [theTableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];
    [theTableView setIndicatorStyle:UIScrollViewIndicatorStyleWhite];
 
    [self.view addSubview:theTableView];
 
  }
  return self;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
	CustomCell *cell= [[[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil] autorelease];
 
	// Default to no selected style and not selected
	cell.selectionStyle = UITableViewCellSelectionStyleNone;
 
	// Set the image for the cell
	[cell setTheImage:[UIImage imageNamed:[NSString stringWithFormat:@"Arrows%d.png", indexPath.row + 1]]];
 
	return cell;
}

#import <UIKit/UIKit.h>
 
@interface CustomCell : UITableViewCell 
{
  UIImageView *image; 
}
 
- (void) setTheImage:(UIImage *)icon;
 
@end

#import "CustomCell.h"
 
@implementation CustomCell
 
/*---------------------------------------------------------------------------
* 
*--------------------------------------------------------------------------*/
-(id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
	if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) 
  {
    // Cells are transparent
    [self.contentView setBackgroundColor:[UIColor clearColor]];
	}
 
	return self;
}
 
/*---------------------------------------------------------------------------
* 
*--------------------------------------------------------------------------*/
- (void) setTheImage:(UIImage *) icon
{  
  // Alloc and set the frame
  image = [[UIImageView alloc] initWithImage:icon];
  image.frame = CGRectMake(0, 0, 286, 68);
 
  // Add subview
  [self.contentView addSubview:image];    
}
 
/*---------------------------------------------------------------------------
*
*--------------------------------------------------------------------------*/
- (void)setSelected:(BOOL)selected animated:(BOOL)animated 
{
  [super setSelected:selected animated:animated];   
  if (selected == YES)
    image.alpha = .5;
  else
    image.alpha = 1;
}
 
/*---------------------------------------------------------------------------
* 
*--------------------------------------------------------------------------*/
- (void)dealloc 
{
  [image release];
  [super dealloc];
}
 
@end

@interface TextField : UIViewController<UITextFieldDelegate> {
 
}
@end

#import "TextField.h"
 
@implementation TextField
UILabel *label;
UITextField *textField;
 
- (void)viewDidLoad {
    [super viewDidLoad];
 
	//Create label
	label = [[UILabel alloc] init];
	label.frame = CGRectMake(10, 10, 300, 40);
	label.textAlignment = UITextAlignmentCenter;
	label.text = @"";
	[self.view addSubview:label]; 
 
	// Initialization code
	textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 200, 300, 50)];
	textField.delegate = self;
	textField.placeholder = @"<Enter Text>";
	textField.textAlignment = UITextAlignmentCenter;
	[self.view addSubview: textField];
}
 
- (void)dealloc {
	[textField release];
	[label release];
    [super dealloc];
}
 
@end

- (BOOL)textFieldShouldReturn:(UITextField *)textField{
	label.text = textField.text;
	[textField resignFirstResponder];
 
    return YES;
}

//Using longitude and latitude to drop a pin on Google maps
	float longitude = 38.892219;
	float latitude = -77.034674;
 
	NSString *url = [NSString stringWithFormat: @"http://maps.google.com/?q=%f,%f",
	                     longitude,
	                     latitude];
 
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

//URL to map address
NSString *url = @"http://maps.google.com/?q=Constitution+Avenue+Northwest+Washington+DC";
 
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];