1.简单说下Sheet
开发中用到了弹框底部选择，苹果自带的SheetView不能满足需求，自己封装了一套，跟微信的风格保持一致,先贴上部分细节代码：
@implementation JHSheetActionView
//添加子控件
-(void)loadSubViews
{
[[UIApplication sharedApplication].keyWindow addSubview:self];
__weak typeof(self)weakSelf=self;
CGFloat parentViewH=[_sheetItems.firstObject count]*cellHeight+ [_sheetItems.lastObject count]*cellHeight+sectionMargin;
[weakSelf mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.mas_equalTo(UIEdgeInsetsZero);
}];
//底层View
UIView * parentView=[[UIView alloc] init];
self.parentView=parentView;
[weakSelf addSubview:parentView];
[parentView mas_makeConstraints:^(MASConstraintMaker *make) {
make.leading.trailing.offset(0);
make.height.mas_equalTo(parentViewH);
//make.height.mas_equalTo(155);
make.top.equalTo(weakSelf.mas_bottom);
}];
//列表View
UITableView *tableView=[[UITableView alloc] init];
tableView.scrollEnabled=NO;
tableView.dataSource=self;
tableView.delegate=self;
tableView.separatorStyle=UITableViewCellSeparatorStyleNone;
tableView.rowHeight=cellHeight;
tableView.backgroundColor=RGB(146, 149, 206);
self.tableView=tableView;
[parentView addSubview:tableView];
[tableView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.mas_equalTo(UIEdgeInsetsZero);
}];
}
//展示蒙板
-(void)showView
{
[self loadSubViews];
self.backgroundColor=[UIColor colorWithWhite:0.f alpha:0.5];
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(closeMark)];
tap.delegate=self;
[self addGestureRecognizer:tap];
[self layoutIfNeeded];
[UIView animateWithDuration:0.4 animations:^{
self.parentView.transform=CGAffineTransformMakeTranslation(0, -self.parentView.frame.size.height);
}];
}
//关闭蒙版
-(void)closeMark
{
[UIView animateWithDuration:0.4 animations:^{
self.parentView.transform=CGAffineTransformIdentity;
} completion:^(BOOL finished) {
self.alpha=0.0;
[self.parentView removeFromSuperview];
[self removeFromSuperview];
}];
}
//解决手势冲突问题
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if ([touch.view isKindOfClass:self.class]) return YES;
return NO;
}
#pragma mark - UITableViewDataSource
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return _sheetItems.count;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [_sheetItems[section] count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//最后的cell
JHSheetCell *cell=[[JHSheetCell alloc] init];
if (indexPath.row==[_sheetItems[indexPath.section] count]-1) cell.isHideLine=YES;
else cell.isHideLine=NO;
cell.titleText=_sheetItems[indexPath.section][indexPath.row];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:NO];
if ([_delegate respondsToSelector:@selector(didSelectCellForRowIndex:)]) {
if (indexPath.section==0)[_delegate didSelectCellForRowIndex:indexPath.row+1];
else [self closeMark];
}
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 0.1f;
}
-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
if (section==0) return 5.0f;
return 0.1f;
}
@end
#pragma mark - JHSheetCell
@interface JHSheetCell()
@property(weak,nonatomic)UILabel *labelView;
@end
@implementation JHSheetCell
-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
if ([super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
UILabel *labelView=[[UILabel alloc] init];
_labelView=labelView;
labelView.font=kFont;
labelView.textColor=[UIColor blackColor];
[self.contentView addSubview:_labelView];
[_labelView mas_makeConstraints:^(MASConstraintMaker *make) {
make.center.equalTo(self);
}];
_isHideLine=NO;
UIView *vw=[[UIView alloc] init];
vw.backgroundColor=RGBA(205, 210, 222,0.5);
UIView *bw= [[UIView alloc] init];
bw.backgroundColor=RGBA(119, 120, 121, 0.5);
self.backgroundView=vw;
self.selectedBackgroundView=bw;
}
return self;
}
//设置cell标题
-(void)setTitleText:(NSString *)titleText
{
_titleText=titleText;
self.labelView.text=titleText;
}
-(void)drawRect:(CGRect)rect
{
if (_isHideLine) return;
CGContextRef context = UIGraphicsGetCurrentContext();
//直线宽度
// CGContextSetLineWidth(context, 0.1);
//设置颜色
[RGBA(191, 198, 210, 1.0) set];
CGContextAddRect(context,CGRectMake(0, rect.size.height-0.3, rect.size.width,0.3));
CGContextStrokePath(context);
}
@end
2.导入工程使用:
@interface ViewController ()<JHSheetActionViewDelegate>
-(void)didSelectCellForRowIndex:(NSInteger)index
{
NSLog(@"选择了第%zd个item",index);
}
- (IBAction)onClickStartButton:(UIButton *)btn{
JHSheetActionView *sheetView= [[JHSheetActionView alloc] init];
sheetView.sheetItems=@[@[@"标题1",@"标题2"],@[@"取消"]];
sheetView.delegate=self;
[sheetView showView];
}
@end
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