I haven\'t seen a very clear answer on this one. For some reason I don\'t understand, the server I am receiving data from returns a JSON response with a lot (hundreds, maybe) of null bytes at the begi
I am to send data to digital meter for which I want data in NSMutableData form. I am trying to assign it data but getting errors.
I have an application that downloads jpeg images, but they\'re large, larger than necessary for the application. I\'ve created a class that\'ll download the NSData of the image. What\'s the best way t
I am making an application in which i have use Json parsing. With the help of json parsing i get photo开发者_JS百科 url which is saved in string. To show images in my cell i use this code
I have data base in which i am storing source address,destination address and category. Now i want to show only last 10 data stored in that data base on table view. I am using this code for retrieving
I\'ve an NSData object, the length is 4 bytes .These four bytes i\'m extracting from another NSData object using ,
I\'m trying to convert a Hex NSString to NSData (I\'m using the below attached code). The following is the output:
I\'ve a NSData object. First I w开发者_运维问答ant to convert NSData object to bytes, then read the first four bytes in this NSData object and then convert the first four bytes to their equivalent int
If I get a NSData which I know it\'s a image\'s data.But I don\'t know what format it is. So how can I i开发者_开发技巧dentify which image format is it?Jpeg or PNG?
I have a struct typedef struct { int8_t foo: 1; } Bar; I have tried to append the bytes to a NSMutableData object like so:
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