samniu

//十六进制转ASCII
-(int )HexConvertToASCII:(NSString *)hexString{
    int j=0;
    int data = 0;
    for(int i=0;i<[hexString length];i++)
    {
        int int_ch;  /// 两位16进制数转化后的10进制数
        
        unichar hex_char1 = [hexString characterAtIndex:i]; ////两位16进制数中的第一位(高位*16)
         

samniu

+ (NSString *)TimerString:(float)fTimer
{
    int iHour = fTimer / 3600;
    float fMinute = fTimer - (iHour * 3600);
    int iMinute = fMinute / 60;
    int iSecond = fMinute - (iMinute * 60);
     
    if (iHour != 0)
    {
        return [NSString stringWithFormat:@"%.2d:%.2d:%.2d", iHour, iMinute, iSecond];

samniu

- (NSTimeInterval)benchmark:(void (^)(void))block
{
    NSParameterAssert(block != NULL);
    NSDate *start = [NSDate date];
    block();
    return [[NSDate date] timeIntervalSinceDate:start];
}

samniu

// 方法1：使用unix c函数来实现获取文件大小，速度超快
float Utils::getFileSizeAtPath(NSString* filePath)
{
    if (filePath == nil || [filePath length] == 0)
    {
        return 0;
    }
    struct stat st;
    if(lstat([filePath cStringUsingEncoding:NSUTF8StringEncoding], &st) == 0){
        return st.st_size;

samniu

NSArray* obtainAllFilesName(NSString *directoryString)
{
    NSFileManager *temFM = [NSFileManager defaultManager];//创建文件管理器
    if (directoryString)
    {
        NSArray *temFilesArray = [temFM subpathsAtPath:directoryString];//获取该目录下的所有文件名
        return temFilesArray;
    }
    else
        return nil;

samniu

- (void)textViewDidChange:(UITextView *)textView 
 
{     NSRange textRange = [textView selectedRange];
 
     [textView setText:[self disable_emoji:[textView text]]];
 
     [textView setSelectedRange:textRange]; 
 
} 
 

samniu

- (void)viewDidLoad
{
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
}

- (void)keyboardWillShow:(NSNotification*)aNotification
{

samniu

@interface ExtendedHitButton: UIButton

+ (instancetype) extendedHitButton;

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event;

@end

@implementation ExtendedHitButton

samniu

+ (UIImage *)imageWithMaxSide:(CGFloat)length sourceImage:(UIImage *)image
{
    CGFloat scale = [[UIScreen mainScreen] scale];
    CGSize imgSize = CWSizeReduce(image.size, length);
    UIImage *img = nil;

    UIGraphicsBeginImageContextWithOptions(imgSize, YES, scale);  // 创建一个 bitmap context

    [image drawInRect:CGRectMake(0, 0, imgSize.width, imgSize.height)
            blendMode:kCGBlendModeNormal alpha:1.0];              // 将图片绘制到当前的 context 上

samniu

CFArrayRef myArray = CNCopySupportedInterfaces(); 
CFDictionaryRef myDict = CNCopyCurrentNetworkInfo(CFArrayGetValueAtIndex(myArray, 0));


+ (NSString *)GetCurrentWifiHotSpotName 
{ 
  NSString *wifiName = nil; 
  NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces(); 
  for (NSString *ifnam in ifs) 
  {