ktyr report

xibからUIView生成

NSArray*objects=[[NSBundle mainBundle] loadNibNamed:@"NibName" owner:self options: nil];
UIView*view=[objects objectAtIndex: 0];

UILabelの文字間を設定

-(void)setLetterSpacing:(UILabel*)label letterSpacing:(float)letterSpacing{
    NSMutableAttributedString* attributedText= [[NSMutableAttributedString alloc] initWithString:label.text];
    [attributedText addAttribute:NSKernAttributeName
                           value:[NSNumber numberWithFloat:letterSpacing]
                           range:NSMakeRange(0, attributedText.length)];
    label.attributedText = attributedText;
}

UILabelの行間を設定

-(void)setLineHeight:(UILabel*)label lineHeight:(float)lineHeight{
    NSMutableParagraphStyle *paragrahStyle = [[NSMutableParagraphStyle alloc] init];
    paragrahStyle.minimumLineHeight = lineHeight;
    paragrahStyle.maximumLineHeight = lineHeight;
    NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc] initWithString:label.text];
    [attributedText addAttribute:NSParagraphStyleAttributeName
                           value:paragrahStyle
                           range:NSMakeRange(0, attributedText.length)];
    label.attributedText = attributedText;
}

UIScrollViewがスクロール出来ないときチェックすること
・User Interaction Enabledがチェックされているか(XCode上)
・setContentSizeでサイズ指定しているか(プログラム上)
・Use Autolayoutのチェックが外れているか(XCode上)

NSStringでクラス名を指定する

Class targetClass=NSClassFromString(@"SettingViewController");
UIViewController*currentCV=[[targetClass alloc]init];

UIButtonをドラッグする

UIButton*btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn addTarget:self action:@selector(onTouchDragInside:withEvent:) forControlEvents:UIControlEventTouchDragInside];
[self.view addSubview:btn];

-(void)onTouchDragInside:(UIButton*)btn withEvent:(UIEvent*)event{
    UITouch *touch=[[event touchesForView:btn] anyObject];
    CGPoint prevPos=[touch previousLocationInView:btn];
    CGPoint pos=[touch locationInView:btn];
    float dX=pos.x-prevPos.x;
    float dY=pos.y-prevPos.y;
    btn.center=CGPointMake(btn.center.x+dX,btn.center.y+dY);
}

ドロップシャドウを付ける

#import <QuartzCore/QuartzCore.h>

UIImageView*iv=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"test.png"]];
iv.layer.shadowOpacity=0.4;
iv.layer.shadowOffset=CGSizeMake(2.0, 2.0);
[self.view addSubview:iv];
//iv.clipsToBounds=YES; これがあるとドロップシャドウが出ない

UIImageの作り方

NSString*fn=@"image.png";
UIImage*image1=[UIImage imageNamed:fn];
UIImage*image2=[UIImage imageWithContentsOfFile:[NSString stringWithFormat:@"%@/%@",[[NSBundle mainBundle] bundlePath],fn]];

NSURL*url=[NSURL URLWithString:@"http://yourdomain/image.png"];
NSData*data=[NSData dataWithContentsOfURL:url];
UIImage*image3=[UIImage imageWithData:data];

参考サイト
UIImage Class Reference
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImage_Class/Reference/Reference.html

beginAnimationsはiOS4以降非推奨なので、
より便利なanimateWithDurationを使いましょう。

[UIView animateWithDuration:0.3
    animations:^{
        //アニメーション内容
        targetView.frame=CGRectMake(0, 0, 100, 100);
    }
    completion:^(BOOL finished){
        //アニメーションが終わったとき
        [targetView removeFromSuperview];
        [targetView release];
        targetView=nil;
    }
];

参考サイト
UIView ClassMethods
http://developer.apple.com/library/ios/#documentation/uikit/reference/uiview_class/UIView/UIView.html#//apple_ref/doc/uid/TP40006816-CH3-SW110

ELCImagePickerControllerを使ってカメラロールの写真を複数選択

1) LibraryをLinkさせる
・プロジェクトを選択
・TARGETSを選択
・Build Phasesをクリック
・Link Binary With Librariesをクリック
・「+」をクリック
・AssetsLibrary.frameworkを選択して「add」

2)ヘッダファイルでimport

#import "ELCImagePickerController.h"
#import "ELCAlbumPickerController.h"

3)実装

-(float)getFillRatio:(CGSize)sourceSize targetSize:(CGSize)targetSize{
    CGFloat widthRatio  = targetSize.width  / sourceSize.width;
    CGFloat heightRatio = targetSize.height / sourceSize.height;
    return (widthRatio > heightRatio) ? widthRatio : heightRatio;
}
-(UIImage*)getResizeImageFill:(UIImage*)img size:(CGSize)_size{
    CGFloat ratio=[self getFillRatio:img.size targetSize:_size];
    CGSize resizedSize = CGSizeMake(roundf(img.size.width*ratio), roundf(img.size.height*ratio));
    
    UIGraphicsBeginImageContext(resizedSize);
    [img drawInRect:CGRectMake(0, 0, resizedSize.width, resizedSize.height)];
    UIImage* resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return resizedImage;
}




-(void)startPhotoSelect{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        ELCAlbumPickerController *albumController = [[[ELCAlbumPickerController alloc] initWithNibName:@"ELCAlbumPickerController" bundle:[NSBundle mainBundle]]autorelease];
        ELCImagePickerController *elcPicker = [[[ELCImagePickerController alloc] initWithRootViewController:albumController]autorelease];
        [albumController setParent:elcPicker];
        [elcPicker setDelegate:self];
        [self presentModalViewController:elcPicker animated:YES];
    } else {
    }
}
- (void)elcImagePickerController:(ELCImagePickerController *)picker didFinishPickingMediaWithInfo:(NSArray *)info {
	[self dismissModalViewControllerAnimated:YES];
    if ([info count]<1) {
        return;
    }
    int i;
    NSMutableDictionary*d;
    CGSize imageSize=CGSizeMake(100, 100);
    for (i=0; i<[info count]; i++) {
        d=[info objectAtIndex:i];
        UIImageView *imageview;
        imageview=[[UIImageView alloc] initWithImage:[self getResizeImageFill:[d objectForKey:UIImagePickerControllerOriginalImage] size:imageSize]];
        [self.view addSubview:imageview];
        imageview.frame=CGRectMake(20.0*i, 20.0*i, imageSize.width, imageSize.height);
    }
}
- (void)elcImagePickerControllerDidCancel:(ELCImagePickerController *)picker {
	[self dismissModalViewControllerAnimated:YES];
}

//ここから実行
-(IBAction)whenTapBtn:(id)sender{
    [self startPhotoSelect];
}

github:ELCImagePickerController
https://github.com/elc/ELCImagePickerController