Prefetch user avatar.

leichunfeng · leichunfeng · commit d12e41e2014e · 2015-08-30T22:22:50.000+08:00
Former-commit-id: f7a42d0
diff --git a/MVVMReactiveCocoa/View/MRCProfileViewController.m b/MVVMReactiveCocoa/View/MRCProfileViewController.m
@@ -10,6 +10,7 @@
 #import "MRCProfileViewModel.h"
 #import "MRCAvatarHeaderView.h"
 #import "MRCAvatarHeaderViewModel.h"
+#import "SDWebImagePrefetcher.h"
 
 @interface MRCProfileViewController ()
 
@@ -25,8 +26,9 @@ @implementation MRCProfileViewController
 - (instancetype)initWithViewModel:(id<MRCViewModelProtocol>)viewModel {
     self = [super initWithViewModel:viewModel];
     if (self) {
-        self.tableHeaderView = [[NSBundle mainBundle] loadNibNamed:@"MRCAvatarHeaderView" owner:nil options:nil].firstObject;
-        [self.tableHeaderView bindViewModel:self.viewModel.avatarHeaderViewModel];
+        if (self.viewModel.avatarHeaderViewModel.user.avatarURL) {
+            [[SDWebImagePrefetcher sharedImagePrefetcher] prefetchURLs:@[ self.viewModel.avatarHeaderViewModel.user.avatarURL ]];
+        }
     }
     return self;
 }
@@ -35,6 +37,9 @@ - (void)viewDidLoad {
     [super viewDidLoad];
     
     self.automaticallyAdjustsScrollViewInsets = NO;
+    
+    self.tableHeaderView = [[NSBundle mainBundle] loadNibNamed:@"MRCAvatarHeaderView" owner:nil options:nil].firstObject;
+    [self.tableHeaderView bindViewModel:self.viewModel.avatarHeaderViewModel];
     self.tableView.tableHeaderView = self.tableHeaderView;
     
     @weakify(self)
