ios 常用方法。

 

 

#define float VERSION = [[[UIDevice currentDevice] systemVersion] floatValue]

 

#import "UIUtil.h"
#import "CONSTS.h"
typedef enum{
    kTypeImageRectangleV,
    kTypeImageRectangleH,
    kTypeImageSquare
} ImageType;
@implementation UIUtil

// Remove all the subviews of the given view.
+ (void)removeSubviews: (UIView *)superview{
    for( UIView* view in superview.subviews ){
        [view removeFromSuperview];
    }
}

// Return the formated string by a given date and seperator.
+ (NSString *)getStringWithDate:(NSDate *)date seperator:(NSString *)seperator{
    return [self getStringWithDate:date seperator:seperator includeYear:YES];
}

// Return the formated string by a given date and seperator.
+ (NSDate *)getDateWithString:(NSString *)str formate:(NSString *)formate{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:formate];
    NSDate *date = [formatter dateFromString:str];
    [formatter release];
    return date;
}

+ (NSString *)getStringWithData:(NSDate *)date format:(NSString*)format {
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:format];
    NSString *string = [formatter stringFromDate:date];
    [formatter release];
    return string;
}

// Return the formated string by a given date and seperator, and specify whether want to include year.
+ (NSString *)getStringWithDate:(NSDate *)date seperator:(NSString *)seperator includeYear:(BOOL)includeYear{
    if( seperator==nil ){
        seperator = @"-";
    }
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    if( includeYear ){
        [formatter setDateFormat:[NSString stringWithFormat:@"yyyy%@MM%@dd",seperator,seperator]];
    }else{
        [formatter setDateFormat:[NSString stringWithFormat:@"MM%@dd",seperator]];
    }
    NSString *dateStr = [formatter stringFromDate:date];
    [formatter release];
   
    return dateStr;
}

// return the date by given the interval day by today. interval can be positive, negtive or zero.
+ (NSDate *)theDateRelativeTodayWithInterval:(NSInteger)interval{
    return [NSDate dateWithTimeIntervalSinceNow:(24*60*60*interval)];
}

// return the date by given the interval day by given day. interval can be positive, negtive or zero.
+ (NSDate *)theDateRelativeGivenDayWithInterval:(NSInteger)interval date:(NSDate *)date{
    NSTimeInterval givenDateSecInterval = [date timeIntervalSinceDate:[self theDateRelativeTodayWithInterval:0]];
    return [NSDate dateWithTimeIntervalSinceNow:(24*60*60*interval+givenDateSecInterval)];
}

+ (NSString *)getWeekdayWithDate:(NSDate *)date{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];   
    NSString *weekdayStr = nil;
    [formatter setDateFormat:@"c"];
    NSInteger weekday = [[formatter stringFromDate:date] integerValue];
    if( weekday==1 ){
        weekdayStr = @"星期日";
    }else if( weekday==2 ){
        weekdayStr = @"星期一";
    }else if( weekday==3 ){
        weekdayStr = @"星期二";
    }else if( weekday==4 ){
        weekdayStr = @"星期三";
    }else if( weekday==5 ){
        weekdayStr = @"星期四";
    }else if( weekday==6 ){
        weekdayStr = @"星期五";
    }else if( weekday==7 ){
        weekdayStr = @"星期六";
    }
    [formatter release];
    return weekdayStr;
}

+ (void)showHint:(UIView *)viewToShowHint
      hintCenter:(CGPoint)hintCenter
     textContent:(NSString*)text{
    [UIUtil showHint:viewToShowHint
          hintCenter:hintCenter
         textContent:text
     timeToDisappear:2];
}
+ (void)showHint:(UIView *)viewToShowHint
      hintCenter:(CGPoint)hintCenter
     textContent:(NSString*)text
 timeToDisappear:(NSInteger)t{
    if (viewToShowHint == nil) {
        viewToShowHint = [UIApplication sharedApplication].keyWindow;
    }
    UIView *hintView = [viewToShowHint viewWithTag:kTagHintView];
    UIFont *textFont = [UIFont systemFontOfSize:28];
    CGFloat maxWidth = 255;
    int textLines = [text numberOfLinesWithFont:textFont
                                  withLineWidth:maxWidth];
//    CGFloat textHeight = [text heightWithFont:textFont
//                                withLineWidth:maxWidth];
    int hintLblTag = 1;
    UILabel *hintLbl;
    if( !hintView ){
        hintView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 256, 64)] autorelease];
        hintView.backgroundColor = [UIColor clearColor];
        hintView.tag = kTagHintView;
        [viewToShowHint addSubview:hintView];
        //alert_frameImg_light
        UIImageView *frameImageView = [[UIImageView alloc] initWithFrame:hintView.bounds];
        frameImageView.image = [[UIImage imageNamed:@"alert_frameImg_light.png"] stretchableImageWithLeftCapWidth:10 topCapHeight:10];
        frameImageView.frame = hintView.bounds;       
        [hintView addSubview:frameImageView];
        [frameImageView release];
       
        hintLbl = [UILabel labelWithFrame:hintView.bounds
                                                  text:text
                                             textColor:[UIColor whiteColor]
                                                  font:textFont
                                                   tag:hintLblTag
                                             hasShadow:NO];
        hintLbl.textAlignment = UITextAlignmentCenter;
        hintLbl.numberOfLines = textLines;
        //[hintLbl sizeToFit];
        [hintView addSubview:hintLbl];
    }else {
        hintLbl = (UILabel*)[hintView viewWithTag:hintLblTag];
        hintLbl.text = text;
        hintLbl.numberOfLines = textLines;
        //[hintLbl sizeToFit];
    }
    hintLbl.left = round(hintLbl.left);
    hintLbl.top = round(hintLbl.top);
    hintView.center = hintCenter;
    //[UIUtil adjustPositionToPixel:hintLbl];
   
    CATransform3D transform = CATransform3DMakeScale(0.001, 0.001, 1.0);
    hintView.layer.transform = transform;
    hintView.alpha = 0;
    transform = CATransform3DMakeScale(1.0, 1.0, 1.0);
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    hintView.layer.transform = transform;
    hintView.alpha = 1;
    [UIView commitAnimations];
   
    if (t > 0) {
        transform = CATransform3DMakeScale(0.001, 0.001, 0.001);
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDelay:t];
        [UIView setAnimationDuration:.5];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
        hintView.layer.transform = transform;
        hintView.alpha = 0;
        [UIView commitAnimations];
    }
}

+ (NSString*)urlEncode:(NSString*)url stringEncoding:(NSStringEncoding)stringEncoding {
    NSArray *escapeChars = @[@";" , @"/" , @"?" , @":" ,
                            @"@" , @"&" , @"=" , @"+" ,    @"$" , @"," ,
                            @"!", @"'", @"(", @")", @"*"];
   
    NSArray *replaceChars = @[@"%3B" , @"%2F" , @"%3F" , @"%3A" ,
                             @"%40" , @"%26" , @"%3D" , @"%2B" , @"%24" , @"%2C" ,
                             @"%21", @"%27", @"%28", @"%29", @"%2A"];
   
    int len = [escapeChars count];
   
    NSString *temp = [url stringByAddingPercentEscapesUsingEncoding:stringEncoding];
   
    for(int i = 0; i < len; i++)
    {
        temp = [temp stringByReplacingOccurrencesOfString:escapeChars[i]
                                               withString:replaceChars[i]
                                                  options:NSLiteralSearch
                                                    range:NSMakeRange(0, [temp length])];
    }
   
    NSString *outString = [NSString stringWithString:temp];
   
    return outString;
   
}

+ (void)adjustPositionToPixel:(UIView*)view{
    view.center = CGPointMake(round(view.center.x), round(view.center.y));
}
+ (void)adjustPositionToPixelByOrigin:(UIView*)view{
    view.left = round(view.left);
    view.top = round(view.top);
}

+ (BOOL)isHighResolutionDevice {
    float version = [[[UIDevice currentDevice] systemVersion] floatValue];
    if (version >= 4.0) { //iOS4
        UIScreen *mainScreen = [UIScreen mainScreen];
        if( mainScreen.scale>1 ){ //iPhone4
        }
        return TRUE;
    }
    return FALSE;
}

+ (BOOL) isChineseInputMode
{
    BOOL result = FALSE;
    CGFloat systemVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
    if (systemVersion >= 5.0)
    {
        NSString *inputMode = [[UITextInputMode currentInputMode] primaryLanguage];
        result = inputMode && [[inputMode lowercaseString] isEqualToString:@"zh-hans"];
    }
    return result;
}

+ (NSString*) imageName:(NSString*) name {
    if (![UIUtil isHighResolutionDevice]) {
        name = [name stringByAppendingString:@".png"];
    }
    return name;
}
+ (void)setRoundCornerForView:(UIView*)view
                   withRadius:(CGFloat)r{
    view.layer.cornerRadius = r;
    [view setNeedsDisplay];
}

+ (void)setBorderForView:(UIView*)view
               withWidth:(CGFloat)width
               withColor:(UIColor*)color{
    view.layer.borderWidth = width;
    view.layer.borderColor = color.CGColor;
    [view setNeedsDisplay];
}

+ (CGSize)getFillInImageSize:(CGSize)imgSize frameSize:(CGSize)frameSize{
    CGFloat newWidth;
    CGFloat newHeight;
    BOOL isFitWidth = YES;
    if( [[self class] getImageTypeWithSize:imgSize]==kTypeImageRectangleH ){
        if( [[self class] getImageTypeWithSize:frameSize]==kTypeImageRectangleH && frameSize.width/frameSize.height>imgSize.width/imgSize.height ){
            isFitWidth = NO;
        }
    }else if( [[self class] getImageTypeWithSize:imgSize]==kTypeImageRectangleV ){
        isFitWidth = NO;
        if( [[self class] getImageTypeWithSize:frameSize]==kTypeImageRectangleV && frameSize.height/frameSize.width>imgSize.height/imgSize.width ){
            isFitWidth = YES;
        }
    }else{
        if( [[self class] getImageTypeWithSize:frameSize]==kTypeImageRectangleH ){
            isFitWidth = NO;
        }
    }
    if( isFitWidth ){
        newWidth = frameSize.width;
        newHeight = imgSize.height/imgSize.width*newWidth;
    }else{
        newHeight = frameSize.height;
        newWidth = imgSize.width/imgSize.height*newHeight;
    }
    return CGSizeMake(newWidth, newHeight);
}

+ (NSInteger)getImageTypeWithSize:(CGSize)imgSize{
    NSInteger type;
    if( imgSize.width>imgSize.height ){
        type = kTypeImageRectangleH;
    }else if( imgSize.width<imgSize.height ){
        type = kTypeImageRectangleV;
    }else{
        type = kTypeImageSquare;
    }
    return type;
}
+(UIImage*)getImage:(UIImage*)pImage width:(float)width height:(float)heigth
{
    CGSize size = CGSizeMake(width, heigth);
    UIGraphicsBeginImageContext(size);
    [pImage drawInRect:CGRectMake(0,0, size.width, size.height)];
    pImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return pImage;
}


+ (void)showHorizontalAnimation:(UIView*)view endX:(CGFloat)endx
{
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.3f];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    view.left = endx;
    [UIView commitAnimations];
}

+ (void)showVerticalAnimation:(UIView*)view endY:(CGFloat)endy
{
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.3f];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    view.top = endy;
    [UIView commitAnimations];
}

@end