Common NSString NSDate NSArray Methods

Common NSString NSDate NSArray Methods

Method declaration and comment:

# Pragma mark string-related methods

// Convert json

-(NSString *) jsonFromObject :( id) obj;

// Judge the string

-(BOOL) isString :( NSString *) string;

// Dictionary assignment

-(NSString *) dictionaryWithDic :( NSDictionary *) dicvalueForKey :( NSString *) key;

// Convert string to date

-(NSDate *) dateFromString :( NSString *) dateString;

// Convert date to string

-(NSString *) stringFromDate :( NSDate *) date;

// Convert the timestamp into a string

-(NSString *) stringFromValue :( NSString *) value;

// Verify the email format

-(BOOL) isValidateEmail :( NSString *) email;

// Verify the phone number

-(BOOL) isValidateMobile :( NSString *) mobileNum;

// Determines whether it is an integer.

-(BOOL) isPureInt :( NSString *) string;

// Determine whether it is a floating point:

-(BOOL) isPureFloat :( NSString *) string;

// Retain a few decimal places

-(NSString *) newFloat :( float) valuewithNumber :( int) numberOfPlace;

// Value assignment in the text box

-(NSString *) setText :( NSString *) text;

-(NSString *) setNumberText :( NSNumber *) numberUnit :( NSString *) unit;

-(NSArray *) arraySorting :( NSString *) parametersArray :( NSArray *) arrayMethods :( BOOL) methods; // yes indicates the forward direction; no indicates the reverse direction.

Method implementation:

-(NSString *) jsonFromObject :( id) obj {

NSString * jsonString = nil;

NSError * error;

NSData * jsonData = [NSJSONSerializationdataWithJSONObject: obj

Options: NSJSONWritingPrettyPrinted // Pass0 ifyou don't 'tcare aboutthe readabilityof thegenerated string

Error: & error];

If (! JsonData ){

NSLog (@ "Gotan error: % @", error );

} Else {

JsonString = [[NSStringalloc] initWithData: jsonDataencoding: NSUTF8StringEncoding];

}

ReturnjsonString;

}

# Pragma mark string-related methods

-(BOOL) isString :( NSString *) string {// whether the string is null

If (! [StringisKindOfClass: [NSNullclass] & string &&! [String isEqualToString: @ "(null)"] & string. length! = 0 &&! [String isEqualToString :@" "]) {

ReturnYES;

} Else {

ReturnNO;

}

}

-(NSString *) dictionaryWithDic :( NSDictionary *) dicvalueForKey :( NSString *) key {// dictionary Value

NSString * value = nil;

If (dic! = Nil & [[dicallKeys] containsObject: key]) {

Value = [dicvalueForKey: key];

} Else {

Value = @"";

}

Returnvalue;

}

-(NSDate *) dateFromString :( NSString *) dateString {

NSDateFormatter * dateFormatter = [[NSDateFormatteralloc] init];

[DateFormattersetDateFormat: @ "yyyy-MM-ddHH: mm: ss"];

NSDate * destDate = [dateFormatterdateFromString: dateString];

ReturndestDate;

}

-(NSString *) stringFromDate :( NSDate *) date {

NSDateFormatter * dateFormatter = [[NSDateFormatteralloc] init];

// Zzz indicates the time zone, and zzz can be deleted, so that the returned date character does not contain the time zone information.

[DateFormattersetDateFormat: @ "MM-ddHH: mm"];

NSString * destDateString = [dateFormatter stringFromDate: date];

ReturndestDateString;

}

-(NSString *) stringFromValue :( NSString *) value {

NSString * str = [value substringToIndex: 10];

NSDate * confromTimesp = [NSDatedateWithTimeIntervalSince1970: [strlongLongValue];

NSDateFormatter * formatter = [[NSDateFormatteralloc] init];

[FormattersetDateFormat: @ "MM-ddHH: mm"];

NSString * date = [formatter stringFromDate: confromTimesp];

NSDate * now = [NSDatedate];

NSString * dateNow = [formatter stringFromDate: now];

If ([[dateNowsubstringToIndex: 5] isEqualToString: [datesubstringToIndex: 5]) {

Date = @ "today ";

}

NSLog (@ "Current Time: % @ loading time % @", dateNow, date, [dateNowsubstringToIndex: 5]);

Returndate;

}

/* Email verification modified byhelensong */

-(BOOL) isValidateEmail :( NSString *) email

{

NSString * emailRegex = @ "[A-Z0-9a-z. _ % +-] + @ [A-Za-z0-9.-] + \. [A-Za-z] {2, 4 }";

NSPredicate * emailTest = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", emailRegex];

Return [emailTest evaluateWithObject: email];

}

/* Verify the mobile phone number modified byhelensong */

-(BOOL) isValidateMobile :( NSString *) mobileNum

{

/**

* Mobile phone number

* Move: 134 [0-8], 135,136,137,138,139,150,151,157,158,159,182,187,188

* Unicom: 130,131,132,152,155,156,185,186

* China Telecom: 153,180,189

*/

NSString * MOBILE = @ "^ 1 (3 [0-9] | 5 [0-35-9] | 8 [025-9]) \ d {8} $ ";

/**

10 * China Mobile: China Mobile

11*134 [0-8], 135,136,137,138,139,150,151,157,158,159,182,187,188

12 */

NSString * CM = @ "^ 1 (34 [0-8] | (3 [5-9] | 5 [017-9] | 8 [278]) \ d) \ d {7} $ ";

/**

15 * China Unicom: China Unicom

16*130,131,132,152,155,156,185,186

17 */

NSString * CU = @ "^ 1 (3 [0-2] | 5 [256] | 8 [56]) \ d {8} $ ";

/**

20 * China Telecom: China Telecom

21*133,1349, 153,180,189

22 */

NSString * CT = @ "^ 1 (33 | 53 | 8 [09]) [0-9] | 349) \ d {7} $ ";

/**

25 * fixed telephones and PHS in Mainland China

26 * area code: 010,020,021,022,023,024,025,027,028,029

27 * Number: seven or eight digits

28 */

// NSString * PHS = @ "^ 0 (10 | 2 [0-5789] | \ d {3}) \ d {} $ ";

NSPredicate * regextestmobile = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", MOBILE];

NSPredicate * regextestcm = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", CM];

NSPredicate * regextestcu = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", CU];

NSPredicate * regextestct = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", CT];

If ([regextestmobileevaluateWithObject: mobileNum] = YES)

| ([RegextestcmevaluateWithObject: mobileNum] = YES)

| ([RegextestctevaluateWithObject: mobileNum] = YES)

| ([RegextestcuevaluateWithObject: mobileNum] = YES ))

{

ReturnYES;

}

Else

{

ReturnNO;

}

}

/* License plate number verification modified byhelensong */

BOOLvalidateCarNo (NSString * carNo)

{

NSString * carRegex = @ "^ [A-Za-z] {1} [A-Za-z_0-9] {5} $ ";

NSPredicate * carTest = [NSPredicatepredicateWithFormat: @ "SELFMATCHES % @", carRegex];

NSLog (@ "carTestis % @", carTest );

Return [carTest evaluateWithObject: carNo];

}

// Determines whether it is an integer.

-(BOOL) isPureInt :( NSString *) string {

NSScanner * scan = [NSScannerscannerWithString: string];

Intval;

Return [scanscanInt: & val] & [scanisAtEnd];

}

// Determine whether it is a floating point:

-(BOOL) isPureFloat :( NSString *) string {

NSScanner * scan = [NSScannerscannerWithString: string];

Floatval;

Return [scanscanFloat: & val] & [scanisAtEnd];

}

// Retain a few decimal places

-(NSString *) newFloat :( float) valuewithNumber :( int) numberOfPlace

{

NSString * formatStr = @ "% 0 .";

FormatStr = [formatStrstringByAppendingFormat: @ "% df", numberOfPlace];

FormatStr = [NSStringstringWithFormat: formatStr, value];

Printf ("formatStr % s \ n", [formatStr UTF8String]);

ReturnformatStr;

}

-(NSString *) setText :( NSString *) text {

NSString * str = text;

If (str. length = 0 ){

Str = @ "not filled ";

}

Returnstr;

}

-(NSString *) setNumberText :( NSNumber *) numberUnit :( NSString *) unit {

// [SelfnewFloat: [number floatValue] withNumber: 1];

If ([numberisKindOfClass: [NSNullclass] | [numberintegerValue] = 0 ){

Number = [NSNumbernumberWithInteger: 0];

}

NSString * str = @"";

If (unit. length = 0 ){

Str = [NSStringstringWithFormat: @ "% @", [selfnewFloat: [numberfloatValue] withNumber: 0];

} Else {

Str = [NSStringstringWithFormat: @ "% @", [selfnewFloat: [numberfloatValue] withNumber: 0], unit];

}

Returnstr;

}

-(NSArray *) arraySorting :( NSString *) parametersArray :( NSArray *) arrayMethods :( BOOL) methods {// yes is the forward order; no is the reverse order

NSSortDescriptor * sorter = [[NSSortDescriptoralloc] initWithKey: parametersascending: YES];

NSMutableArray * sortDescriptors = [[NSMutableArrayalloc] initWithObjects: & sortercount: 1];

NSArray * sortArray = [array sortedArrayUsingDescriptors: sortDescriptors];

NSArray * reversedArray = [[sortArray reverseObjectEnumerator] allObjects];

If (methods ){

ReturnsortArray;

} Else {

ReturnreversedArray;

}

}