一 ?cell中masonry中用法
1 ?使用 [_templateCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize]。
2 ?根據(jù)cell最下面的控件的底部。
3? UITableViewAutomaticDimension
4 只會(huì)重新計(jì)算高度,不會(huì)reload cell,所以只是把原來(lái)的cell撐大了而已,還是同一個(gè)cell實(shí)例
[_tableView beginUpdates];[_tableView endUpdates];
二 label約束高級(jí)使用
[_label1 setContentHuggingPriority:UILayoutPriorityRequired
forAxis:UILayoutConstraintAxisHorizontal];
//設(shè)置label1的content compression 為1000
[_label1 setContentCompressionResistancePriority:UILayoutPriorityRequired
forAxis:UILayoutConstraintAxisHorizontal];
//設(shè)置右邊的label2的content hugging 為1000
[_label2 setContentHuggingPriority:UILayoutPriorityRequired
forAxis:UILayoutConstraintAxisHorizontal];
//設(shè)置右邊的label2的content compression 為250
[_label2 setContentCompressionResistancePriority:UILayoutPriorityDefaultLow
forAxis:UILayoutConstraintAxisHorizontal];
三 ?等間距
UIView *lastSpaceView = [UIView new];
lastSpaceView.backgroundColor = [UIColor greenColor];
[_containerView1 addSubview:lastSpaceView];
[lastSpaceView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.and.bottom.equalTo(_containerView1);
}];
for (NSUInteger i = 0; i < ITEM_COUNT; i++) {
UIView *itemView = [self getItemViewWithIndex:i];
[_containerView1 addSubview:itemView];
[itemView mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.and.width.equalTo(@(ITEM_SIZE));
make.left.equalTo(lastSpaceView.mas_right);
make.centerY.equalTo(_containerView1.mas_centerY);
}];
UIView *spaceView = [UIView new];
spaceView.backgroundColor = [UIColor greenColor];
[_containerView1 addSubview:spaceView];
[spaceView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(itemView.mas_right).with.priorityHigh(); // 降低優(yōu)先級(jí)熄阻，防止寬度不夠出現(xiàn)約束沖突
make.top.and.bottom.equalTo(_containerView1);
make.width.equalTo(lastSpaceView.mas_width);
}];
lastSpaceView = spaceView;
}
[lastSpaceView mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(_containerView1.mas_right);
}];
