58 lines
2.3 KiB
Objective-C
58 lines
2.3 KiB
Objective-C
//
|
|
// ZLCollectionReusableView.m
|
|
// ZLCollectionView
|
|
//
|
|
// Created by zhaoliang chen on 2018/7/9.
|
|
// Copyright © 2018年 zhaoliang chen. All rights reserved.
|
|
//
|
|
|
|
#import "ZLCollectionReusableView.h"
|
|
#import "ZLCollectionViewLayoutAttributes.h"
|
|
|
|
@interface ZLCollectionReusableView ()
|
|
|
|
@property(nonatomic,strong)UIImageView* ivBackground;
|
|
|
|
@end
|
|
|
|
@implementation ZLCollectionReusableView
|
|
|
|
- (instancetype)initWithFrame:(CGRect)frame {
|
|
if (self == [super initWithFrame:frame]) {
|
|
self.translatesAutoresizingMaskIntoConstraints = NO;
|
|
[self addSubview:self.ivBackground];
|
|
self.ivBackground.translatesAutoresizingMaskIntoConstraints = NO;
|
|
[self addConstraints:@[
|
|
[NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0.0],
|
|
[NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeRight multiplier:1.0 constant: 0.0],
|
|
[NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeTop multiplier:1.0 constant: 0.0],
|
|
[NSLayoutConstraint constraintWithItem:self.ivBackground attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeBottom multiplier:1.0 constant: 0.0]
|
|
]];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)layoutAttributes {
|
|
[super applyLayoutAttributes:layoutAttributes];
|
|
//设置背景颜色
|
|
ZLCollectionViewLayoutAttributes *ecLayoutAttributes = (ZLCollectionViewLayoutAttributes*)layoutAttributes;
|
|
if (ecLayoutAttributes.color) {
|
|
self.backgroundColor = ecLayoutAttributes.color;
|
|
}
|
|
if (ecLayoutAttributes.image) {
|
|
self.ivBackground.image = ecLayoutAttributes.image;
|
|
}
|
|
}
|
|
|
|
|
|
- (UIImageView*)ivBackground {
|
|
if (!_ivBackground) {
|
|
_ivBackground = [[UIImageView alloc]init];
|
|
_ivBackground.contentMode = UIViewContentModeScaleAspectFill;
|
|
_ivBackground.backgroundColor = [UIColor clearColor];
|
|
}
|
|
return _ivBackground;
|
|
}
|
|
|
|
@end
|