diff --git a/LNPhotoBrower/ViewController.m b/LNPhotoBrower/ViewController.m
index 20edf16..6a67910 100644
--- a/LNPhotoBrower/ViewController.m
+++ b/LNPhotoBrower/ViewController.m
@@ -10,6 +10,7 @@
 #import "LNCollectionViewCell.h"
 #import "LNPhotoBrowser.h"
 #import "LNPhotoCell.h"
+#import "UIImageView+WebCache.h"
 
 @interface ViewController ()<UICollectionViewDelegate,UICollectionViewDataSource,LNPhotoBrowserDelegate>
 @property (weak, nonatomic) IBOutlet UICollectionView *collectionView;
@@ -38,9 +39,25 @@ - (void)viewDidLoad {
     UINib *nib = [UINib nibWithNibName:@"LNCollectionViewCell" bundle:nil];
     [self.collectionView registerNib:nib forCellWithReuseIdentifier:@"LNCollectionViewCell"];
     
-    for (int i = 0; i < 7; i++) {
-        self.dataSource[i] = @(i);
-    }
+    //本地图片
+//    for (int i = 0; i < 7; i++) {
+//        self.dataSource[i] = @(i);
+//    }
+    
+    //网络图片
+    self.dataSource[0] = @"https://ss0.baidu.com/6ONWsjip0QIZ8tyhnq/it/u=170467806,1583061927&fm=173&app=25&f=JPEG?w=550&h=309&s=9E141CCE871024770FFC962903007041";
+    self.dataSource[1] = @"https://ss2.baidu.com/6ONYsjip0QIZ8tyhnq/it/u=410742347,4159915112&fm=173&app=25&f=JPEG?w=580&h=412&s=33A1D805081207D88C149DA303006001";
+    self.dataSource[2] = @"https://ss1.baidu.com/6ONXsjip0QIZ8tyhnq/it/u=227601010,1752783549&fm=173&app=25&f=JPEG?w=580&h=606&s=ED079557CAF30DBD2614E1A20300F040";
+    self.dataSource[3] = @"https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=98103306,3825292050&fm=15&gp=0.jpg";
+    self.dataSource[4] = @"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534416129867&di=021145b6c82a95d5fc0fd603c29d96e9&imgtype=jpg&src=http%3A%2F%2Fimg3.imgtn.bdimg.com%2Fit%2Fu%3D1539154028%2C2259069525%26fm%3D214%26gp%3D0.jpg";
+    self.dataSource[5] = @"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534416116808&di=bb4f879377b8c472ceaae9e1e73dc662&imgtype=0&src=http%3A%2F%2Fimg.19196.com%2Fuploads%2F151126%2F9-151126095P51b.jpg";
+    self.dataSource[6] = @"https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=2798038485,1098783002&fm=15&gp=0.jpg";
+    self.dataSource[7] = @"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534416156385&di=bc0668e38d6efaa792fc835488f553b7&imgtype=jpg&src=http%3A%2F%2Fimg4.imgtn.bdimg.com%2Fit%2Fu%3D1798863369%2C2650549000%26fm%3D214%26gp%3D0.jpg";
+    self.dataSource[8] = @"https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2711644284,4114963897&fm=15&gp=0.jpg";
+    self.dataSource[9] = @"https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=4113742554,2651567125&fm=15&gp=0.jpg";
+    self.dataSource[10] = @"https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3712780851,1879285617&fm=15&gp=0.jpg";
+    self.dataSource[11] = @"https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2253196755,2730366453&fm=15&gp=0.jpg";
+    
     [self.collectionView reloadData];
 }
 
@@ -50,8 +67,7 @@ - (void)viewDidLoad {
 - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
 {
     LNCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"LNCollectionViewCell" forIndexPath:indexPath];
-    NSString *name = [NSString stringWithFormat:@"%@.jpg",self.dataSource[indexPath.row]];
-    cell.imageView.image = [UIImage imageNamed:name];
+    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:self.dataSource[indexPath.row]]];
     return cell;
 }
 
@@ -84,8 +100,7 @@ - (NSInteger)numberOfPhotosInPhotoBrowser:(LNPhotoBrowser *)photoBrowser
  */
 - (NSURL *)photoBrowser:(LNPhotoBrowser *)photoBrowser imageURLForIndex:(NSInteger)index
 {
-    NSString *string = [[NSBundle mainBundle]pathForResource:[self.dataSource[index] stringValue] ofType:@"jpg"];
-    return [NSURL fileURLWithPath:string];
+    return [NSURL URLWithString:self.dataSource[index]];
 }
 
 /**
@@ -94,8 +109,7 @@ - (NSURL *)photoBrowser:(LNPhotoBrowser *)photoBrowser imageURLForIndex:(NSInteg
  */
 - (UIImage *)photoBrowser:(LNPhotoBrowser *)photoBrowser placeholderImageForIndex:(NSInteger)index;
 {
-    NSString *name = [NSString stringWithFormat:@"%@.jpg",[self.dataSource[index] stringValue]];
-    
+    NSString *name = [NSString stringWithFormat:@"%zd.jpg",index%7];
     return [UIImage imageNamed:name];
 }