Optimize the memory to reduce the size of the image displayed by the cell, and then select the original image instead of getting the image from the imageview;
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
ZLCollectionCell *cell = [collectionViewdequeueReusableCellWithReuseIdentifier:@"ZLCollectionCell"forIndexPath : indexPath];
cell.btnSelect.selected =NO;
PHAsset *asset =_arrayDataSources[indexPath.row];
cell.imageView.contentMode =UIViewContentModeScaleAspectFill;
cell.imageView.clipsToBounds =YES;
CGSize size = cell.frame.size;
// size.width *= 10;
// size.height *= 10;
size.width *=2;
size.height *=2;
[[ZLPhotoToolsharePhotoTool] requestImageForAsset:assetsize:size resizeMode:PHImageRequestOptionsResizeModeExactcompletion:^(UIImage *image) {
// DSLog(@" 每个cell上面的小图 image.size.width %f image.size.height %f",image.size.width,image.size.height);
cell.imageView.image = image;
for (ZLSelectPhotoModel *modelin _arraySelectPhotos) {
if ([model.imageNameisEqualToString:[asset valueForKey:@"filename"]]) {
cell.btnSelect.selected =YES;
break;
}
}
}];
cell.btnSelect.tag = indexPath.row;
[cell.btnSelectaddTarget:selfaction:@selector(cell_btn_Click:)forControlEvents:UIControlEventTouchUpInside];
return cell;
}
#pragma mark - UIButton Action
- (void)cell_btn_Click:(UIButton *)btn
{
DSLog(@"点击选择照片按钮");
if (_arraySelectPhotos.count >= self.maxSelectCount
&& btn.selected ==NO) {
ShowToastLong(@"最多只能选择%ld张图片", (long)self.maxSelectCount);
return;
}
PHAsset *asset =_arrayDataSources[btn.tag];
ZLCollectionCell *cell = (ZLCollectionCell *)[self.collectionViewcellForItemAtIndexPath:[NSIndexPathindexPathForRow:btn.taginSection:0]];
if (!btn.selected) {
//添加图片到选中数组
[btn.layeraddAnimation:[ZLAnimationToolanimateWithBtnStatusChanged]forKey:nil];
if (cell.imageView.image ==nil) {
ShowToastLong(@"该图片尚未从iCloud下载，请在系统相册中下载到本地后重新尝试，或在预览大图中加载完毕后选择");
return;
}
ZLSelectPhotoModel *model = [[ZLSelectPhotoModelalloc] init];
model.asset = asset;
[[ZLPhotoToolsharePhotoTool] requestImageForAsset:assetsize:PHImageManagerMaximumSizeresizeMode:PHImageRequestOptionsResizeModeNonecompletion:^(UIImage *image) {
// DSLog(@" 选中后 每个cell上面的原图 image.size.width %f image.size.height %f",image.size.width,image.size.height);
model.image = image;
}];
// model.image = cell.imageView.image;
model.imageName = [assetvalueForKey:@"filename"];
[_arraySelectPhotosaddObject:model];
} else {
for (ZLSelectPhotoModel *modelin _arraySelectPhotos) {
if ([model.imageNameisEqualToString:[asset valueForKey:@"filename"]]) {
[_arraySelectPhotosremoveObject:model];
break;
}
}
}
btn.selected = !btn.selected;
[selfchangePreViewStatus];
}