When I convert my NSMutableArray Into NSdata,I get NSMutableArray data in bytes. Now I want To convert it into UIImage, because I want to send My Array data by Email, but I get null in UIImage.
Here is my code.
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:viewArray]; UIImage *image = [UIImage imageWithData:data]; [controller addAttachmentData:image mimeType:@"image/png" fileName:@"labelData"]; To convert an image to string you need a method to convert NSData to a base64Encoded string and back (lots of examples http://cocoadev.com/wiki/BaseSixtyFour). The easiest ones to use are categories on NSData so you can do something like this:
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:viewArray]; NSString* pictureDataString = [self base64EncodingWithLineLength:data]; UIImage* image = [UIImage imageWithData:[NSData dataFromBase64EncodedString: pictureDataString]]; [controller addAttachmentData:image mimeType:@"image/png" fileName:@"labelData"]; - (NSString *) base64EncodingWithLineLength:(NSData*) data { const unsigned char* bytesArr=[data bytes]; unsigned int lineLength=0; NSMutableString *result = [NSMutableString stringWithCapacity:[data length]]; unsigned long ixtext = 0; unsigned long lentext = [data length]; long ctremaining = 0; unsigned char inbuf[3], outbuf[4]; unsigned short i = 0; unsigned short charsonline = 0, ctcopy = 0; unsigned long ix = 0; while( YES ) { ctremaining = lentext - ixtext; if( ctremaining <= 0 ) break; for( i = 0; i < 3; i++ ) { ix = ixtext + i; if( ix < lentext ) inbuf[i] = bytesArr[ix]; else inbuf [i] = 0; } outbuf [0] = (inbuf [0] & 0xFC) >> 2; outbuf [1] = ((inbuf [0] & 0x03) << 4) | ((inbuf [1] & 0xF0) >> 4); outbuf [2] = ((inbuf [1] & 0x0F) << 2) | ((inbuf [2] & 0xC0) >> 6); outbuf [3] = inbuf [2] & 0x3F; ctcopy = 4; switch( ctremaining ) { case 1: ctcopy = 2; break; case 2: ctcopy = 3; break; } for( i = 0; i < ctcopy; i++ ) [result appendFormat:@"%c", encodingTable[outbuf[i]]]; for( i = ctcopy; i < 4; i++ ) [result appendString:@"="]; ixtext += 3; charsonline += 4; if( lineLength > 0 ) { if( charsonline >= lineLength ) { charsonline = 0; [result appendString:@"\n"]; } } } return [NSString stringWithString:result]; } static char encodingTable[64] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P', 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f', 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v', 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/' }; Try this way may help you out.
