I would like to split a custom url for app opening in iPhone into values, my scheme would be something like:
appname://user=jonsmith&message=blah%20blah
Where I would like to be able to get "user" and "message" as two NSStrings. Any advice on best approach?
Assuming your url is in an NSURL object called url:
NSMutableDictionary *queryParams = [[NSMutableDictionary alloc] init];
NSArray *components = [[url query] componentsSeparatedByString:#"&"];
for (NSString *component in components) {
NSArray *pair = [component componentsSeparatedByString:#"="];
[queryParams setObject:[[pair objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding: NSMacOSRomanStringEncoding]
forKey:[pair objectAtIndex:0]];
}
...
[queryParams release];
Use Google's gtm_dictionaryWithHttpArgumentsString NSDictionary category
http://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/GTMNSDictionary%2BURLArguments.h
NSString* yourString = #"appname://user=jonsmith&message=blah%20blah";
NSString* queryString = [yourString substringFromIndex:strlen("appname://")];
NSArray* queryArray = [queryString componentsSeparatedByString:#"&"];
NSMutableDictionary* queryDict = [NSMutableDictionary dictionary];
for (NSString* query in queryArray) {
NSUInteger indexOfEqualsSign = [query rangeOfString:#"="].location;
if (indexOfEqualsSign != NSNotFound) {
NSString* key = [[query substringToIndex:indexOfEqualsSign] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString* value = [[query substringFromIndex:indexOfEqualsSign+1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[queryDict setObject:value forKey:key];
}
}
return queryDict;
Use an NSScanner if you need to save more memory.
Related
I need to convert this "5?8?519223cef9cee4df999436c5e8f3e96a?EVAL_TIME?60?2013-03-21" string into dictionary. Separated by "?"
Dictionary would be some thing like
{
sometext1 = "5",
sometext2 = "8",
sometext3 = "519223cef9cee4df999436c5e8f3e96a",
sometext4 = "EVAL_TIME",
sometext5 = "60",
sometext6 = "2013-03-21"
}
Thank you .
Break the string to smaller strings and loop for them.
This is the way
NSArray *objects = [inputString componentsSeparatedByString:#"?"];
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
int i = 1;
for (NSString *str in objects)
{
[dict setObject:str forKey:[NSString stringWithFormat:#"sometext%d", i++]];
}
Try
NSString *string = #"5?8?3519223cef9cee4df999436c5e8f3e96a?EVAL_TIME?60?2013-03-21";
NSArray *stringComponents = [string componentsSeparatedByString:#"?"];
//This is very risky, your code is at the mercy of the input string
NSArray *keys = #[#"cid",#"avid",#"sid",#"TLicense",#"LLicense",#"date"];
NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
for (int idx = 0; idx<[stringComponents count]; idx++) {
NSString *value = stringComponents[idx];
NSString *key = keys[idx];
[dictionary setObject:value forKey:key];
}
EDIT: More optimized
NSString *string = #"5?8?3519223cef9cee4df999436c5e8f3e96a?EVAL_TIME?60?2013-03-21";
NSArray *stringComponents = [string componentsSeparatedByString:#"?"];
NSArray *keys = #[#"cid",#"avid",#"sid",#"TLicense",#"LLicense",#"date"];
NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithObjects:stringComponents forKeys:keys];
first separate the string into several arrays by '?'.
then add the string in you dictionary.
sth like this:
NSString *str = #"5?8?519223cef9cee4df999436c5e8f3e96a?EVAL_TIME?60?2013-03-21";
NSArray *valueArray = [str componentsSeparatedByString:#"?"];
NSMutableArray *keyArray = [[NSMutableArray alloc] init];
for (int i = 0; i <[valueArray count]; i ++) {
[keyArray addObject:[NSString stringWithFormat:#"sometext%d",i+1]];
}
NSDictionary *dic = [[NSDictionary alloc] initWithObjects:valueArray forKeys:keyArray];
For the future: If you were to store your data in JSON format (closer to what you have anyway), it'll be much easier to deal with and transfer between systems. You can easily read it...using NSJSONSerialization
How can I add GET parameters to an ASIHttpRequest?
I want to go from http://mysite.com/server to http://mysite.com/server?a=1&b=2 programmatically.
I have all my parameters as key-value pairs in an NSDictionary object.
Thanks
Use string format like
NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:#"1",#"a",#"2",#"b", nil];
NSMutableString *prams = [[NSMutableString alloc] init];
for (id keys in dict) {
[prams appendFormat:#"%#=%#&",keys,[dict objectForKey:keys]];
}
NSString *removeLastChar = [prams substringWithRange:NSMakeRange(0, [prams length]-1)];
NSString *urlString = [NSString stringWithFormat:#"http://mysite.com/server?%#",removeLastChar];
NSLog(#"urlString %#",urlString);
I need to extract a variable's value from a string, which happens to be a URL. The string/url is loaded as part of a separate php query, not the url in the browser.
The url's will look like:
http://gmail.com?access_token=ab8w4azq2xv3dr4ab37vvzmh&token_type=bearer&expires_in=3600
How can I capture the value of the access_token which in this example is ab8w4azq2xv3dr4ab37vvzmh?
This code should do it:
- (NSString *)extractToken:(NSURL *)URL
{
NSString *urlString = [URL absoluteString];
NSRange start = [urlString rangeOfString:#"access_token="];
if (start.location != NSNotFound)
{
NSString *token = [urlString substringFromIndex:start.location+start.length];
NSRange end = [token rangeOfString:#"&"];
if (end.location != NSNotFound)
{
//trim off other parameters
token = [token substringToIndex:end.location];
}
return token;
}
//not found
return nil;
}
Alternatively, here is a more general solution that will extract all the query parameters into a dictionary:
- (NSDictionary *)URLQueryParameters:(NSURL *)URL
{
NSString *queryString = [URL query];
NSMutableDictionary *result = [NSMutableDictionary dictionary];
NSArray *parameters = [queryString componentsSeparatedByString:#"&"];
for (NSString *parameter in parameters)
{
NSArray *parts = [parameter componentsSeparatedByString:#"="];
NSString *key = [[parts objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
if ([parts count] > 1)
{
id value = [[parts objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[result setObject:value forKey:key];
}
}
return result;
}
Good Category for NSDictionary:
#import "NSDictionary+URL.h"
#implementation NSDictionary (URL)
+ (NSDictionary *)dictionaryWithUrlString:(NSString *)urlString{
NSRange urlRange = [urlString rangeOfString:#"?"];
if(urlRange.length>0){
urlString = [urlString substringFromIndex:urlRange.length+urlRange.location];
}
NSArray *pairsArray = [urlString componentsSeparatedByString:#"&"];
NSMutableDictionary *parametersDictionary = [[NSMutableDictionary alloc] initWithCapacity:[pairsArray count]];
for(NSString *pairString in pairsArray){
NSArray *valuesArray = [pairString componentsSeparatedByString:#"="];
if([valuesArray count]==2){
[parametersDictionary setValue:[valuesArray objectAtIndex:1] forKey:[valuesArray objectAtIndex:0]];
}
}
return [parametersDictionary autorelease];
}
#end
NSMutableDictionary *querycomponent = [[NSMutableDictionary alloc] init];
if (![query isEqualToString:#""]){
NSArray *queryArray = [query componentsSeparatedByString:#"&"];
for (NSString *subquery in queryArray){
NSArray *subqueryArray = [subquery componentsSeparatedByString:#"="];
NSString *key = [subqueryArray objectAtIndex:0];
NSString *val = [subqueryArray objectAtIndex:1];
[querycomponent setObject:val forKey:key];
}
NSLog(#"querycomponent %#",querycomponent);
}
I want to open an other application using
[[UIApplication sharedApplication]openURL:[[NSURL alloc]initWithString:myString]];
as log as myString is like
NSString *myString=[NSString stringWithFormat:#"testHandleOpenUrl://?%#",#"123"];
it works fine but if I try to use an NSDictionary like
NSString *myString=[NSString stringWithFormat:#"testHandleOpenUrl://?%#",userInfo];
it fails without an error
Hope you can help me.
Try enumerating all the elements in your dictionary and appending those to your URL.
NSMutableString *params = [[[NSMutableString alloc] init] autorelease];
NSEnumerator *keys = [userInfo keyEnumerator];
NSString *name = [keys nextObject];
while (nil != name) {
[params appendString: name];
[params appendString: #"="];
[params appendString: [userInfo objectForKey:name]];
name = [keys nextObject];
if (nil != name) {
[params appendString: #"&"];
}
}
NSString *myString=[NSString stringWithFormat:#"testHandleOpenUrl://?%#",params];
When you use an NSDictionary in the format string, you get a URL that looks like this:
testHandleOpenUrl://?{
bar = foo;
}
The result of calling -description on userInfo is simply substituted for the %#. Presumably, you want to pass parameters contained in the dictionary in the URL. Probably something like this:
NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:#"bar", #"foo", nil];
NSString *myString=[NSString stringWithFormat:#"testHandleOpenUrl://?foo=%#", [userInfo objectForKey:#"foo"]];
NSLog(#"myString: %#", myString); // prints "myString: testHandleOpenUrl://?foo=bar"
NSString * paramString = #"";
int i = 0;
for(NSString * key in [userInfo allKeys]){
NSString * value = (NSString*)[userInfo objectForKey:key];
NSString * valueParam = [NSString stringWithFormat:#"%#%#=%#",(i==0)?#"?":#"&",key,value];
paramString = [paramString stringByAppendingString:valueParam];
i++;
}
NSString *myString=[NSString stringWithFormat:#"testHandleOpenUrl://%#", paramString];
I have a string in the following format
myString = "cat+dog+cow"
I need to store each string separated by + in to a array.
Eg:
myArray[0] = cat
myArray[1] = dog
myArray[2] = cow
Can anyone tell me the proper way to do this?
componentsSeparatedByString: splits the string and return the result in an array.
NSArray *myArray = [myString componentsSeparatedByString:#"+"];
[myArray objectAtIndex:0];//cat
[myArray objectAtIndex:1];//dog
[myArray objectAtIndex:2];//cow
Try this..
NSArray *arr = [myString componentsSeparatedByString:#"-"];
[arr objectAtIndex:0];//Hai
[arr objectAtIndex:1];//Welcome
It is vert simple..
NSString * test = #"Hello-hi-splitting-for-test";
NSArray * stringArray = [test componentsSeparatedByString:#"-"];
// Now stringArray will contain all splitted strings.. :)
Hope this helps...
I you don't want use array then iterate through each character...
NSMutableString * splittedString = nil;
for(int i=0;i<test.length;i++){
unichar character = [test characterAtIndex:0];
if (character=='-') {
if (splittedString!=nil) {
NSLog(#"String component %#",splittedString);
[splittedString release];
splittedString = nil;
}
} else {
if (splittedString==nil) {
splittedString = [[NSMutableString alloc] init];
}
[splittedString appendFormat:#"%C",character];
}
}
if (splittedString!=nil) {
NSLog(#"String last component %#",splittedString);
[splittedString release];
splittedString = nil;
}
Thats all...
NSArray *myWords = [myString componentsSeparatedByString:#"+"];
You can find this one very simple
NSString *str = #"cat+dog+cow";
NSArray *arr = [str componentsSeparatedByString:#"+"];
NSLog(#"Array items %#",arr);
OUTPUT:
Array items
(
Cat,
dog,
Cow
)
Use the componentsSeparatedByString: method of NSString.
NSString string = #"hai-welcome";
NSArray myArray = [string componentsSeparatedByString:#"-"];
NSString* haiString = [myArray objectAtIndex:0];
NSString* welcomeString = [myArray objectAtIndex:1];
NSArray *strArray = [myString componentsSeparatedByString:#"-"];
firstString = [strArray objectAtIndex:0];//Hai
secondString = [strArray objectAtIndex:1];//Welcome
This will be the solution if you are dealing with a string:
NSString *mySstring = #"hai-welcome";
NSMutableArray *anArray=[[NSMutableArray alloc] initWithArray:[componentsSeparatedByString: #"-"]];
And each word will be stored in respective position from 0-n.
Try This. :)
If you are averse to using arrays, you can consider this –
NSString *accessMode, *message;
NSScanner *scanner = [NSScanner scannerWithString:#"hai-welcome"];
NSCharacterSet *hyphenSet = [NSCharacterSet characterSetWithCharactersInString:#"-"];
[scanner scanUpToCharactersFromSet:hyphenSet intoString:&accessMode];
[scanner scanCharactersFromSet:hyphenSet intoString:nil];
[scanner scanUpToCharactersFromSet:[NSCharacterSet characterSetWithCharactersInString:#""] intoString:&message];
NSArray *lines = [string componentsSeparatedByString:#"-"];
The first value will be stored in 0th index of lines and second value will be stored in 1th index of lines..
Why not array?
Simple code :
NSString *myString = [[NSString alloc] initWithString:#"cat+dog+cow"];
NSArray *resultArray = [tempString componentsSeparatedByString:#"+"];
NSLog(#"1. %# 2. %# 3. %#",[resultArray objectAtIndex:0],[resultArray objectAtIndex:1],[resultArray objectAtIndex:2]);
Try This:
NSString *str = #"cat+dog+cow" ;
NSArray *array = [str componentsSeparatedByString:#"+"];
NSLog(#"%#",array) ;