自定义TZCollectionView,优化照片列表页的滑动

TZImagePickerController/Assets.xcassets/AppIcon.appiconset/Contents.json

 {
   "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
     {
       "idiom" : "iphone",
       "size" : "29x29",

TZImagePickerController/TZImagePickerController/TZAssetCell.m

@@ -106,11 +106,11 @@
 
 - (UIButton *)selectPhotoButton {
     if (_selectImageView == nil) {
-        UIButton *selectImageView = [[UIButton alloc] init];
-        selectImageView.frame = CGRectMake(self.tz_width - 44, 0, 44, 44);
-        [selectImageView addTarget:self action:@selector(selectPhotoButtonClick:) forControlEvents:UIControlEventTouchUpInside];
-        [self.contentView addSubview:selectImageView];
-        _selectPhotoButton = selectImageView;
+        UIButton *selectPhotoButton = [[UIButton alloc] init];
+        selectPhotoButton.frame = CGRectMake(self.tz_width - 44, 0, 44, 44);
+        [selectPhotoButton addTarget:self action:@selector(selectPhotoButtonClick:) forControlEvents:UIControlEventTouchUpInside];
+        [self.contentView addSubview:selectPhotoButton];
+        _selectPhotoButton = selectPhotoButton;
     }
     return _selectPhotoButton;
 }

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.h

@@ -18,3 +18,8 @@
 @property (nonatomic, copy) void (^backButtonClickHandle)(TZAlbumModel *model);
 
 @end
+
+
+@interface TZCollectionView : UICollectionView
+
+@end

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -30,7 +30,7 @@
 }
 @property CGRect previousPreheatRect;
 @property (nonatomic, assign) BOOL isSelectOriginalPhoto;
-@property (nonatomic, strong) UICollectionView *collectionView;
+@property (nonatomic, strong) TZCollectionView *collectionView;
 @property (nonatomic, strong) UIImagePickerController *imagePickerVc;
 @end
 
@@ -122,7 +122,7 @@ static CGSize AssetGridThumbnailSize;
     CGFloat top = 44;
     if (iOS7Later) top += 20;
     CGFloat collectionViewHeight = tzImagePickerVc.maxImagesCount > 1 ? self.view.tz_height - 50 - top : self.view.tz_height - top;
-    _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, top, self.view.tz_width, collectionViewHeight) collectionViewLayout:layout];
+    _collectionView = [[TZCollectionView alloc] initWithFrame:CGRectMake(0, top, self.view.tz_width, collectionViewHeight) collectionViewLayout:layout];
     _collectionView.backgroundColor = [UIColor whiteColor];
     _collectionView.dataSource = self;
     _collectionView.delegate = self;
@@ -719,3 +719,16 @@ static CGSize AssetGridThumbnailSize;
 }
 
 @end
+
+
+
+@implementation TZCollectionView
+
+- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
+    if ( [view isKindOfClass:[UIControl class]]) {
+        return YES;
+    }
+    return [super touchesShouldCancelInContentView:view];
+}
+
+@end