Objective-c method for parsing nsdata data into nsdictionary or Nsarray in the request return

1. If the background returns a dictionary or an array of data types, use the following method to convert directly:

2. {
4. Data into a dictionary where Responseobject is the data returned
6. nsdictionary *resultdictionary = [nsjsonserialization jsonobjectwithdata:responseobject options:  Nsjsonreadingmutablecontainers error: nil];
8. NSLog (@ "resultdictionary:%@", resultdictionary);
12. //data to array where Responseobject is the data returned
14. Nsarray *resultarray = [nsjsonserialization jsonobjectwithdata:responseobject options:  Nsjsonreadingmutablecontainers error: nil];
16. NSLog (@ "resultarray:%@", resultarray);
18. }

2, the above method prints out the dictionary, the array value is NULL, may return with other special strings, you need to convert the data returned to a string:

1. {
2. NSString *resultstring =[[nsstring alloc] initwithdata:responseobject encoding:nsutf8StringEncoding  ];
3. }

Print out the string as shown in the following:

Looking at the printed string, the beginning is not preceded by a ' {' (dictionary) or ' (' (array) symbol, but a string of characters, so we need to remove the extra string.

1. {
2. NSString *changestr = [stringobjects stringbyreplacingoccurrencesofstring:@ "renderreverse&&  Renderreverse (" withstring:@" "];
3. nsstring *jsonstr = [changestr substringtoindex:tempstr. length-1];
4. }

Finally, the parse string is transferred to data and the data to the dictionary:

1. {
2. Nsmutabledictionary *dictionary = [nsjsonserialization jsonobjectwithdata:[jsonstr DataUsingEncoding:NSUTF 8StringEncoding]  options:0 Error: nil];
3. }

Finally check the dictionary output to see if it is still empty.

Objective-c method for parsing nsdata data into nsdictionary or Nsarray in the request return