Use threads to download network pictures

@implementaion Fkviewcontroller

-(void) viewdidload

{

[Super Viewdidload];

}

-(Ibaction) ShowImage: (ID) sender

{

nsstring* url = @ "http://www.crazyit.ortg/logo.jpg";

Create a new Thread object

Nsthread *thread = [Nsthread alloc] initwithtarget:self selector: @selector [downloadimagefromurl:) Object:url];

Start thread

[Thread start];

}

Defines a method as the thread execution body

-(void) Downloadimagefromurl: (NSString *) URL

{

Getting data from the network

NSData *data = [[NSData alloc] Initwithcontentofurl:[nsurl Urlwithstring:url]];

UIImage *image = [[UIImage alloc] initwithdata:data];

if (image = nil)

{

Execute UpdateUI in the main thread: method

[Self Performselectoronmainthread: @selector (updateUI:) withobject:image Waituntildone:yes];

}

Else

{

NSLog (@ "------Download Image Error---");

}

}

-(void) UpdateUI: (uiimage*) image

{

Self.iv.image = image;

}

Use threads to download network pictures