UIImage not received correctly from server - ios

Question

I am kind of new to objective-c so please help. i am receiving the image but not completely here is my code.
I am sure that the problems is here and not on the server side, but if you need me to post the code of the server side then ill do that.
uint8_t buf[3000000];
int len = 0;
len = [inputStream read:buf maxLength:3000000];
UIImage* fooo ;
NSMutableData *dataa=[[NSMutableData alloc] initWithLength:0];
do{
len = [inputStream read:buf maxLength:3000000];
if(len>0) current+=len;
}
while (len>-1);
[dataa appendBytes: (const void *)buf length:current];
fooo = [[UIImage alloc] initWithData:dataa];
[inputStream close];
[outputStream close];
server side
String FilePath=xxxxx.jpeg";
System.out.println (FilePath);
File file1=new
File(xxxxxx\\38.jpeg");
long v=file1.length();
byte [] mybytearray = new byte [(int)file1.length()];
FileInputStream fis = new
FileInputStream(FilePath);
BufferedInputStream bis = new
BufferedInputStream(fis);
bis.read(mybytearray,0,mybytearray.length);
os = connectionSocket.getOutputStream();//outpustream
System.out.println("Sending...");
os.write(mybytearray,0,mybytearray.length);
System.out.println("Sent");
os.flush();

Answer 1

Every time when stream comes you creating a new data and try to append.. but actually you are not appending all data to one data object you are doing this way NSMutableData *dataa=[[NSMutableData alloc] initWithLength:0]
I will prefer have an instance variable and do like this
if(!_data) {
_data = [[NSMutableData alloc] initWithLength:0];
}
Whole code should be like this, code is from apple documentation
switch(eventCode) {
case NSStreamEventHasBytesAvailable:
{
if(!_data) {
_data = [[NSMutableData data] retain];
}
uint8_t buf[1024];
unsigned int len = 0;
len = [(NSInputStream *)stream read:buf maxLength:1024];
if(len) {
[_data appendBytes:(const void *)buf length:len];
// bytesRead is an instance variable of type NSNumber .
[bytesRead setIntValue:[bytesRead intValue]+len];
} else {
NSLog(#"no buffer!");
}
break;
}
You should handle stream events. Stream will not bring data in one big chunk, so that's why we appending data here. Delegate method will be called with an event and you can set check on event.
When you got this event NSStreamEventEndEncountered close your stream object and create uiimage object
switch(NSStreamEventEndEncountered){
[stream close];
[stream removeFromRunLoop:[NSRunLoop currentRunLoop]
forMode:NSDefaultRunLoopMode];
[stream release];
stream = nil; // stream is ivar, so reinit it
if (_data!=nil)
UIImage *image = [UIImage imageWithData:_data];
}