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http://egg.pe.kr/370

- (void)scrollViewDidEndDecelerating:(UITableView *)tableView {

    int tomove = ((int)tableView.contentOffset.y%(int)tableView.rowHeight);

    if(tomove < tableView.rowHeight/2){

        [tableView setContentOffset:CGPointMake(0, tableView.contentOffset.y-tomove) animated:YES];

    }else{

        [tableView setContentOffset:CGPointMake(0, tableView.contentOffset.y+(tableView.rowHeight-tomove)) animated:YES];

    }

}

- (void)scrollViewDidEndDragging:(UITableView *)scrollView willDecelerate:(BOOL)decelerate {

    if(decelerate) return;

    [self scrollViewDidEndDecelerating:scrollView];

NSURL *imageURL = [NSURL URLWithString:@"http://example.com/demo.jpg"];

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{

    NSData *imageData = [NSData dataWithContentsOfURL:imageURL];

    dispatch_async(dispatch_get_main_queue(), ^{

        // Update the UI

        self.imageView.image = [UIImage imageWithData:imageData];

    });

});

http://stackoverflow.com/questions/7694215/create-a-uiimage-with-a-url-in-ios

.m에서

// 카메라 버튼을 눌렀을 때의 이벤트 핸들러

- (IBAction)useCamera:(id)sender {

    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){

        UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];

        imagePicker.delegate = self;

        imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;

        imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, nil];

        imagePicker.allowsEditing = NO;

        [self presentModalViewController:imagePicker animated:YES];

        newMedia = YES;

    }

}

//Album버튼을 눌렀을 때의 이벤트 핸들러

- (IBAction)useCameraRoll:(id)sender {

    if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeSavedPhotosAlbum]){

        UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];

        imagePicker.delegate = self;

        imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

        imagePicker.mediaTypes = [NSArray arrayWithObjects:(NSString *) kUTTypeImage, nil];

        imagePicker.allowsEditing = NO;

        [self presentModalViewController:imagePicker animated:YES];

        newMedia = NO;

    }

}

.m에서

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

    [self dismissModalViewControllerAnimated:YES];

    if([mediaType isEqualToString:(NSString *)kUTTypeImage]){

        UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

        imageView.image = image;

        if (newMedia) UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:finishedSavingWithError:contextInfo:), nil);

    }else if([mediaType isEqualToString:kUTTypeMovie]){

        // for movie

    }

}

- (void) image:(UIImage *) image finishedSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

    if(error){

        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Save failed" message:@"Failed to save image" delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil];

        [alert show];

    }

}

- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker{

    [self dismissModalViewControllerAnimated:YES];

}

버튼 코드 생성

    self.startTimeBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [self.startTimeBtn setTitle:@"start time" forState:UIControlStateNormal];

    self.startTimeBtn.frame = CGRectMake(50, 50, 110, 40);

버튼 영역이 모자라면 자동줄바꿈

   //btn : UIButton 

   [self.btn.titleLabel setLineBreakMode:UILineBreakModeWordWrap];

이벤트 핸들링

    [self.startTimeBtn addTarget:self  

                          action:@selector(startTimeBtnAction:)forControlEvents:UIControlEventTouchUpInside];

- (IBAction)startTimeBtnAction:(id)sender {

...

}

title text

[yourButton setTitle:@"your title" forState:UIControlStateNormal];

[yourButton setTitle:@"your title" forState:UIControlStateSelected];

[yourButton setTitle:@"your title" forState:UIControlStateHighlighted];

//// First View

// h

#import "SecondViewController.h"

@interface ViewController : UIViewController<SecondViewDelegate>

// m

- (IBAction)btnAction:(id)sender {

    SecondViewController *secondViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"SecondView"];

    secondViewController.delegate = self;

    [self.navigationController pushViewController:secondViewController animated:YES];

}

//// SecondView

///h

@protocol SecondViewDelegate

@required

-(void)done:(NSString *)str;

@end

@interface SecondViewController : UIViewController

@property (strong, nonatomic) id<SecondViewDelegate> delegate;

///m

- (IBAction)btnAction:(id)sender {   // btnAction이 핸들링 될때, 델리게이트의 메소드 호출

    [self.delegate done:self.tf.text];

    [self.navigationController popViewControllerAnimated:YES];

}

    UIButton *okBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    okBtn.frame = CGRectMake(61, 210, 200, 30);

    [okBtn setTitle:@"OK Button" forState:UIControlStateNormal];

    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 10, 100, 24)];

    label.backgroundColor = [UIColor clearColor];

    label.textColor = [UIColor whiteColor];

    label.text = @"label1";

//// section이 복수일때

   //table에 뿌려줄 데이터 sec1, sec2 -> table data

    NSArray *sec1 = [[NSArray alloc] initWithObjects:@"sec1-row1",@"sec1-row2",@"sec1-row3", nil];

    NSArray *sec2 = [[NSArray alloc] initWithObjects:@"sec2-row1",@"sec2-row2", nil];

    tabledata = [[NSArray alloc] initWithObjects:sec1,sec2, nil];

...

// cell 세팅

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    // Configure the cell...

    if(cell == nil){

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

    }

    if(indexPath.section == 0){

        cell.textLabel.text = [[tabledata objectAtIndex:0] objectAtIndex:indexPath.row];

    }else if(indexPath.section == 1){

        cell.textLabel.text = [[tabledata objectAtIndex:1] objectAtIndex:indexPath.row];

    }

    return cell;

}

//section 갯수

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

#warning Potentially incomplete method implementation.

    // Return the number of sections.

    return self.tabledata.count;

}

// Record 갯수 (section별로)

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

#warning Incomplete method implementation.

    // Return the number of rows in the section.

    if(section == 0){

        return [[self.tabledata objectAtIndex:0] count];

    }else if(section == 1){

        return [[self.tabledata objectAtIndex:1] count];        

    }

}

// Header와 Footer

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {

    if(section == 0){

        return @"section1";

    }else{

        return @"Section2";

    }

}

- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section {

    if(section == 0){

        return @"section1";

    }else{

        return @"Section2";

    }

}

//File Path = app's documents folder

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

      NSString *documentsDir = [paths objectAtIndex:0];

      NSString *fileName = 

            [documentsDir stringByAppendingPathComponent:@"data2.txt"];

//File write

    NSMutableArray *array = [[NSMutableArray alloc] init];

    [array addObject:@"Text1"];

    [array addObject:@"Text2"];

    [array writeToFile:fileName atomically:YES];  

//File read

if ([[NSFileManager defaultManager] fileExistsAtPath:fileName]){

        NSArray *array = [[NSArray alloc] initWithContentsOfFile: fileName];

        NSLog(@"%@",array);

 }

//// Image File Save

- (IBAction)saveAction:(id)sender {

    NSMutableArray *array = [[NSMutableArray alloc] init];

    [array addObject:UIImagePNGRepresentation(self.imageView.image)];

    [array writeToFile:self.fileName atomically:YES];  

    ALERT(@"FileSave", @"Image Saved.");

}

- (IBAction)loadAction:(id)sender {

    if ([[NSFileManager defaultManager] fileExistsAtPath:fileName]){

        NSArray *array = [[NSArray alloc] initWithContentsOfFile: fileName];

        UIImage *image = [UIImage imageWithData:[array objectAtIndex:0]];

        self.imageView.image = image;

    }

// 기본

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Hello World"

                                                    message:@"iphone, here I come!"

                                                   delegate:self

                                          cancelButtonTitle:@"OK"

                                          otherButtonTitles:nil];

[alert show];

[alert release];

////사용자가 버튼 누를때까지 대기

UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"Contacting Server\nPlease Wait..."

message:nil

delegate:nil

cancelButtonTitle:@"OK"

otherButtonTitles:nil];

[alert show];

while ((!alert.hidden) && (alert.superview != nil)) {

[[NSRunLoop currentRunLoop] limitDateForMode:NSDefaultRunLoopMode];

}

[alert release];

////Macro

#define ALERT(X,Y) {UIAlertView *alert = [[UIAlertView alloc] initWithTitle:X message:Y delegate:self cancelButtonTitle:@"OK"otherButtonTitles: nil];[alert show];[alert release];}

//// Yes/No alert view

- (IBAction)deleteBtn:(id)sender {

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"削除"

                                                    message:@"削除しますか？"

                                                   delegate:self

                                          cancelButtonTitle:@"はい"

                                          otherButtonTitles:@"いいえ", nil];

    [alert show];

    [alert release];

}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {

NSLog(@"%d", buttonIndex);

}