hachinobu

NSNumber *intNum = @1;
NSNumber *floatNum = @1.23f;
NSNumber *doubleNum = @1.2345;
NSNumber *boolNum = @YES;
NSNumber *charNum = @'a';
    
int numInt = [intNum intValue];
float numFloat = [floatNum floatValue];
double numDouble = [doubleNum doubleValue];
BOOL numBool = [boolNum boolValue];

hachinobu

//ローカルな定数
static NSString * const kFirstName = @"hachinobu";

//グローバルな定数
//ヘッダーファイル内で宣言
extern NSString * const FirstName;

//実装ファイルで定義
NSString *const FirstName = @"hachinobu";

hachinobu

    UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(40, 50, 180, 180)];
    view1.backgroundColor = [UIColor redColor];
    [self.view addSubview:view1];
    UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(70, 90, 180, 200)];
    view2.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:view2];
    CGRect unionRect = CGRectUnion(view1.frame, view2.frame);
    NSLog(@"unionRect:%@", NSStringFromCGRect(unionRect));
    UIView *unionView = [[UIView alloc] initWithFrame:unionRect];
    unionView.backgroundColor = [UIColor clearColor];

hachinobu

- (id)initWithDictionary:(NSDictionary *)dict managedContext:(NSManagedObjectContext *)context
{
    self = [super initWithEntity:[NSEntityDescription entityForName:[[self class] entityName] inManagedObjectContext:context] insertIntoManagedObjectContext:nil];
    
    if (self) {
        for (NSString *key in dict.allKeys) {
            [self setValue:dict[key] forKey:key];
        }
        
    }

hachinobu

//UIImageのリサイズ
- (UIImage *)resizeImage:(UIImage *)image rect:(CGRect)rect
{
    UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0.0);
    [image drawInRect:rect];
    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
    UIGraphicsEndImageContext();
    return resizedImage;

hachinobu

//全文
NSString* html = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByTagName('html')[0].outerHTML"];

//bodyタグ内
NSString* html = [webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"];

hachinobu

//ステータスバー領域を含む画面の領域
CGRect bounds = [UIScreen mainScreen].bounds;

ステータスバー領域を含まない画面の領域
CGRect applicationFrame = [UIScreen mainScreen].applicationFrame;

hachinobu

+ (UIColor *)colorWithHexString:(NSString *)hex
{
    //先頭に#がついていた場合は#を削除
    if ([hex hasPrefix:@"#"]) {
        hex = [hex substringFromIndex:1];
    }
    unsigned int rgb[3];
    for (int i = 0; i < 3; i++) {
        NSString *component = [hex substringWithRange:NSMakeRange(i * 2, 2)];
        NSScanner *scanner = [NSScanner scannerWithString:component];

hachinobu

ja.lprojとen.lprojフォルダを作成してそれぞれの言語ファイルを同じ名前で入れる。
en.lprojフォルダ配下は自動で認識されるがja.lprojフォルダ配下は[Target Membership]にチェックが外れているのでチェックを入れればローカライズされる。

hachinobu

    //集計対象
    NSExpression *keyPathExpression = [NSExpression expressionForKeyPath:@"column1"];
    //集計関数countを指定
    NSExpression *countExpression = [NSExpression expressionForFunction:@"count:" arguments:@[keyPathExpression]];
    
    //集計式の対象（NSExpressionDescription ）
    NSExpressionDescription *expressionDescription = [[[NSExpressionDescription alloc] init] autorelease];
    [expressionDescription setName:@"count"];
    [expressionDescription setExpression:countExpression];
    [expressionDescription setExpressionResultType:NSInteger32AttributeType];