ktyr report

使用言語を調べる

NSString*lang=[self getCurrentLanguage];

-(NSString*)getCurrentLanguage
{
    NSArray *languages = [NSLocale preferredLanguages];
    return [languages objectAtIndex:0];
}

ビット演算#1
type(INTEGER)を4ビット右シフトして右端が1であるレコードのidとtypeを取得する。

SELECT id,type FROM target_table_name WHERE type >> 4 & 1 = 1;

2つの日付の差を日数で出す

int dayCount = [self getDaysCountByTwoDateString:@"2014-04-01" endDateString:@"2014-04-04"];
-(int)getDaysCountByTwoDateString:(NSString*)startDateString endDateString:(NSString*)endDateString
{
    NSDateFormatter *inputDateFormatter = [[NSDateFormatter alloc] init];
    [inputDateFormatter setDateFormat:@"yyyy-MM-dd"];
    
    NSDate *startInputDate = [inputDateFormatter dateFromString:startDateString];
    NSDate *endInputDate = [inputDateFormatter dateFromString:endDateString];
    
    float tmp= [endInputDate timeIntervalSinceDate:startInputDate];
    int day=(int)( tmp / (3600.0*24.0) );
    return day;
}

URLを取得

$url = (empty($_SERVER["HTTPS"]) ? "http://" : "https://") . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]

animateWithDurationを途中で止める

アニメーション実行

[UIView animateWithDuration:10.0f animations:^{
    targetView.frame=CGRectMalke(0.0,0.0,100.0,100.0);
} completion:^(BOOL finished) {
    
}];

アニメーション中止

[UIView setAnimationBeginsFromCurrentState:YES];
[UIView animateWithDuration:0.001 animations:^{
    targetView.alpha = 1.0;
}];

$.ajaxでcookieも送信
IE10未満は不可

$.ajax({
    type:'post',
    url:'url',
    dataType:'text',
    data:data,
    crossDomain:true,
    cache:false,
    xhrFields: {
        withCredentials:true
    },
    success:function(data, dataType){
        
    },
    error:function(XMLHttpRequest, textStatus, errorThrown){
        
    },
    complete:function(){
        
    }
});

数字の桁を合わせる

NSString*numStr1=[NSString stringWithFormat:@"%02d",i];//2桁
NSString*numStr2=[NSString stringWithFormat:@"%04d",i];//4桁 i=3のとき"0003"となる

pagingEnabled=YESのUIScrollViewのスクロール先のページインデックスを取得

ヘッダーファイル

<UIScrollViewDelegate>

メインファイル

-(void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
{
    CGFloat width = scrollView.frame.size.width;
    NSInteger page = (targetContentOffset->x + (0.5f * width)) / width;
    int index=(int)page;   
}

文字列に指定の文字列が含まれているか判定

BOOL has = [self hasSpecifiedString:@"abcdefg" searchString:@"cde"];
-(BOOL)hasSpecifiedString:(NSString*)targetString searchString:(NSString*)searchString
{
    NSRange searchResult = [targetString rangeOfString:searchString];
    return !(searchResult.location==NSNotFound);
}

performSelectorの警告を消す

#define SuppressPerformSelectorLeakWarning(Stuff) \
do { \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \
Stuff; \
_Pragma("clang diagnostic pop") \
} while (0)

if (_delegate && _selector && [_delegate respondsToSelector:_selector]) {
    SuppressPerformSelectorLeakWarning([_delegate performSelector:_selector withObject:[NSNumber numberWithBool:success]]);
}