iOS 개발에서 자주 사용하는 코드 정리

1. label 필렛 설정

//  layer   
label.layer.cornerRadias =   ;
//         
label.layer.masksToBounds = YES;
label.layer.clipsToBounds = YES;

2. 날짜 형식 설정

           (               ，                )
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
         
    :yyyy-MM-dd hh(HH):mm:ss
formatter.dateFormat = @"  HH:mm";

3. 프레임 애니메이션

//            
self.imageview.animationImages = self.images;

//      
self.imageview.animationDuration = 0.2;

//          0    
self.imageview.animationRepeatCount = 0;

//    
[self.imageview startAnimating];

4. 팝업 프롬프트

//         UIAlertController *obj1
+ (instancetype)alertControllerWithTitle:     message:     preferredStyle:    preferredStyle;
//           UIAlertAction *obj2
+ (instancetype)actionWithTitle:   style:   handler:(void (^ __nullable)(UIAlertAction *action))handler;
//           
[self presentViewController:obj1 animated: /  completion:nil];

5.타이머

//     :
1. 
timerWithTimeInterval:(  )ti invocation:(    )invocation repeats:(BOOL)yesOrNo;
2. 
timerWithTimeInterval:(  )ti target:(         )aTarget selector:(SEL     )aSelector userInfo:(nullable id)userInfo repeats:(BOOL)yesOrNo;
1,2    - (void)fire      ;

scheduledTimerWithTimeInterval:(  )ti invocation:(    )invocation repeats:(BOOL)yesOrNo;

scheduledTimerWithTimeInterval:(  )ti target:(         )aTarget selector:(SEL     )aSelector userInfo:(nullable id)userInfo repeats:(BOOL)yesOrNo;
//        
[self.scrollView setContentOffset:CGPointMake(x, y) animated:YES];
//     :
- (void)invalidate;

6. 메일박스 형식이 정확한 코드인지 판단

//         
-(BOOL)isValidateEmail:(NSString *)email
{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",emailRegex];
return [emailTest evaluateWithObject:email];
}

7. 이미지 압축

  ：UIImage *yourImage= [self imageWithImageSimple:image scaledToSize:CGSizeMake(210.0, 210.0)];
//    
- (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize
{
// Create a graphics image context
UIGraphicsBeginImageContext(newSize);
// Tell the old image to draw in this newcontext, with the desired
// new size
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
// End the context
UIGraphicsEndImageContext();
// Return the new image.
return newImage;
}

8. 사용 가능한 사진 업로드 코드를 직접 테스트

- (IBAction)uploadButton:(id)sender {
UIImage *image = [UIImage imageNamed:@"1.jpg"]; //   
NSData *imageData = UIImageJPEGRepresentation(image,0.5);//    
NSLog(@"   :%i",[imageData length]);
// post url
NSString *urlString = @"http://192.168.1.113:8090/text/UploadServlet";
//     
// setting up the request object now
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ; [request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
//
NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data;boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
//
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r
--%@\r
",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Disposition:form-data; name=\"userfile\"; filename=\"2.png\"\r
"] dataUsingEncoding:NSUTF8StringEncoding]]; //         
[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r
\r
"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:@"\r
--%@--\r
",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
// NSLog(@"1-body:%@",body);
NSLog(@"2-request:%@",request);
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; NSLog(@"3-    ：%@",returnString);

9. 이미지 뷰에 그림 로드

UIImage *myImage = [UIImage imageNamed:@"1.jpg"];
[imageView setImage:myImage];
[self.view addSubview:imageView];

10. 갤러리 작업

//    ：
UIImagePickerControllerSourceTypesourceType=UIImagePickerControllerSourceTypeCamera;
if (![UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
}
UIImagePickerController * picker = [[UIImagePickerControlleralloc]init];
picker.delegate = self;
picker.allowsEditing=YES;
picker.sourceType=sourceType;
[self presentModalViewController:picker animated:YES];
//    ：
-(void)imagePickerController:(UIImagePickerController*)pickerdidFinishPickingMediaWithInfo:(NSDictionary *)info
{
[picker dismissModalViewControllerAnimated:YES];
UIImage * image=[info objectForKey:UIImagePickerControllerEditedImage];
[self performSelector:@selector(selectPic:) withObject:imageafterDelay:0.1];
}
-(void)selectPic:(UIImage*)image
{
NSLog(@"image%@",image);
imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, image.size.width, image.size.height);
[self.viewaddSubview:imageView];
[self performSelectorInBackground:@selector(detect:) withObject:nil];
}
detect        ，             
//    ：
-(void)imagePickerControllerDIdCancel:(UIImagePickerController*)picker
{
[picker dismissModalViewControllerAnimated:YES];
}

11. 다음 View로 건너뛰기

nextWebView = [[WEBViewController alloc] initWithNibName:@"WEBViewController" bundle:nil];
[self presentModalViewController:nextWebView animated:YES];
//    UIBarButtonItem    
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"  " style:UIBarButtonItemStyleDone target:self action:@selector(clickRightButton)];
[self.navigationItem setRightBarButtonItem:rightButton];
  navigationBar  
self.navigationController.navigationBarHidden = YES;//
iOS   UIlabel         （    ）
UIView *footerView = [[UIView alloc]initWithFrame:CGRectMake(10, 100, 300, 180)];
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(10, 100, 300, 150)];
label.text = @"Hello world! Hello world!Hello world! Hello world! Hello world! Hello world! Hello world! Hello world!Hello world! Hello world! Hello world! Hello world! Hello world! Helloworld!";
//       
label.backgroundColor = [UIColor redColor];
//         
label.textColor = [UIColor whiteColor];
//      
label.textAlignment = UITextAlignmentCenter;
//      
label.lineBreakMode = UILineBreakModeWordWrap;
label.numberOfLines = 0;

12. 코드 생성 button

CGRect frame = CGRectMake(0, 400, 72.0, 37.0);
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = frame;
[button setTitle:@"      " forState: UIControlStateNormal];
button.backgroundColor = [UIColor clearColor];
button.tag = 2000;
[button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];

13. View의 중심에 컨트롤 표시

（    ，  label，View）label.center = self.view.center;

14. 보기 좋은 문서 처리

 tableView cell textLabel   ：
cell.backgroundColor = [UIColorscrollViewTexturedBackgroundColor];
//       
cell.textLabel.font = [UIFont fontWithName:@"AmericanTypewriter" size:100.0f];
//       
cell.textLabel.textColor = [UIColor orangeColor];
//         
cell.textLabel.shadowColor = [UIColor whiteColor];
//         
cell.textLabel.textAlignment = UITextAlignmentCenter;

15. Status Bar 숨기기

             ,       viewDidLoad   
[[UIApplication sharedApplication]setStatusBarHidden:YES animated:NO];

16. AlertView 배경 변경

UIAlertView *theAlert = [[[UIAlertViewalloc] initWithTitle:@"Atention"
message: @"I'm a Chinese!"
delegate:nil
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"Okay",nil] autorelease];
[theAlert show];
UIImage *theImage = [UIImageimageNamed:@"loveChina.png"];
theImage = [theImage stretchableImageWithLeftCapWidth:0topCapHeight:0];
CGSize theSize = [theAlert frame].size;
UIGraphicsBeginImageContext(theSize);
[theImage drawInRect:CGRectMake(5, 5, theSize.width-10, theSize.height-20)];//            ，   alertview        。
theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
theAlert.layer.contents = (id)[theImage CGImage];

17. 키보드 투명도

textField.keyboardAppearance = UIKeyboardAppearanceAlert;
               
[UIApplication sharedApplication].networkActivityIndicatorVisible，    NO。

18. 화면 캡처

//                    CGSizeMake(200,400)
UIGraphicsBeginImageContext(CGSizeMake(200,400));
//renderInContext                  
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
//                
UIImage *aImage = UIGraphicsGetImageFromCurrentImageContext();
//                 
UIGraphicsEndImageContext();
// png           
imageData = UIImagePNGRepresentation(aImage);

19. 셀이 선택한 배경 변경

UIView *myview = [[UIView alloc] init]; myview.frame = CGRectMake(0, 0, 320, 47); myview.backgroundColor = [UIColorcolorWithPatternImage:[UIImage imageNamed:@"0006.png"]];
cell.selectedBackgroundView = myview;

20. 이미지 표시

CGRect myImageRect = CGRectMake(0.0f, 0.0f, 320.0f, 109.0f);
UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect]; [myImage setImage:[UIImage imageNamed:@"myImage.png"]];
myImage.opaque = YES; //opaque    
[self.view addSubview:myImage];

21. 그림이 상자의 크기에 맞게

NSString*imagePath = [[NSBundle mainBundle] pathForResource:@"XcodeCrash"ofType:@"png"];
UIImage *image = [[UIImage alloc]initWithContentsOfFile:imagePath];
UIImage *newImage= [image transformWidth:80.f height:240.f];
UIImageView *imageView = [[UIImageView alloc]initWithImage:newImage];
[newImagerelease];
[image release];
[self.view addSubview:imageView];

22. 그림을 클릭하여 이동하는 코드를 실현한다. 배경 그림이 있는 button을 생성하고 button에 클릭 이벤트를 추가한다.

UIButton *imgButton=[[UIButton alloc]initWithFrame:CGRectMake(0, 0, 120, 120)];
[imgButton setBackgroundImage:(UIImage *)[self.imgArray objectAtIndex:indexPath.row] forState:UIControlStateNormal];
imgButton.tag=[indexPath row];
[imgButton addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];

최근에야 github에 뭘 넣기 시작했는데 회사에서는 못 넣는다고 썼어요.