Merge pull request #103 from lastObject/master

获取相册时候增加了一个判断，避免崩溃

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -125,10 +125,14 @@ static CGFloat TZScreenScale;
             PHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:collection options:option];
             if (fetchResult.count < 1) continue;
             if ([collection.localizedTitle isEqualToString:@"My Photo Stream"] || [collection.localizedTitle isEqualToString:@"我的照片流"]) {
+                if (albumArr.count) {
                     [albumArr insertObject:[self modelWithResult:fetchResult name:collection.localizedTitle] atIndex:1];
                 } else {
                     [albumArr addObject:[self modelWithResult:fetchResult name:collection.localizedTitle]];
                 }
+            } else {
+                [albumArr addObject:[self modelWithResult:fetchResult name:collection.localizedTitle]];
+            }
         }
         if (completion && albumArr.count > 0) completion(albumArr);
     } else {
@@ -141,10 +145,14 @@ static CGFloat TZScreenScale;
             if ([name isEqualToString:@"Camera Roll"] || [name isEqualToString:@"相机胶卷"] || [name isEqualToString:@"所有照片"] || [name isEqualToString:@"All Photos"]) {
                 [albumArr insertObject:[self modelWithResult:group name:name] atIndex:0];
             } else if ([name isEqualToString:@"My Photo Stream"] || [name isEqualToString:@"我的照片流"]) {
+                if (albumArr.count) {
                     [albumArr insertObject:[self modelWithResult:group name:name] atIndex:1];
                 } else {
                     [albumArr addObject:[self modelWithResult:group name:name]];
                 }
+            } else {
+                [albumArr addObject:[self modelWithResult:group name:name]];
+            }
         } failureBlock:nil];
     }
 }