iphone 代码 - 爱码网

转自：http://fei263.blog.163.com/blog/static/927937242009526112420548/

- (NSString *)URLEncodedString:(NSString *)string{

    NSString *result = (NSStrin*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)string,NULL,CFSTR("!*'();:@&=+$,/?%#[]"),kCFStringEncodingUTF8);

    [result autorelease];

    return result;
}

//生成nonce

- (NSString *)generateNonce{

    CFUUIDRef theUUID = CFUUIDCreate(NULL);

    CFStringRef string = CFUUIDCreateString(NULL, theUUID);

    NSMakeCollectable(theUUID);

    return [(NSString *)string stringByReplacingOccurrencesOfString:@"-" withString:@""];

    //return (NSString *)string;
}
 
//生成Timestamp

- (NSString *)generateTimestamp{

    return [[NSString stringWithFormat:@"%d", time(NULL)] retain];
}

iPhone键盘改变颜色
只有这2种数字键盘才有效果：UIKeyboardTypeNumberPad，UIKeyboardTypePhonePad
keyboardAppearance ＝ UIKeyboardAppearanceAlert
代码如下：