效果
image.png
demo
代码语言：javascript复制NSArray *array = @[@"一",@"二二",@"三三三",@"四四四四",@"五五五五五",@"一",@"二二",@"三三三",@"四四四四",@"五五五五五",@"一",@"二二",@"三三三",@"四四四四",@"五五五五五",@"一",@"二二",@"三三三",@"四四四四",@"五五五五五"];
UIButton *listButton;
__block float buttonRight;
for (int i = 0; i < array.count; i ) {
NSString *title = array[i];
CGFloat titleW = [title sizeWithFont:Font(14) maxSize:CGSizeMake(MAXFLOAT, MAXFLOAT)].width 20;
UIButton *button = [UIButton new];
button.backgroundColor = WHColor_1779ff;
[button setTitle:title forState:UIControlStateNormal];
[button setTitleColor:WhiteColor forState:UIControlStateNormal];
button.titleLabel.font = Font(14);
button.layer.cornerRadius = 10;
button.layer.masksToBounds = YES;
[self addSubview:button];
[button mas_makeConstraints:^(MASConstraintMaker *make) {
if (listButton) {
buttonRight = buttonRight 15 titleW;
if (buttonRight > SCREEN_WIDTH) {
//下一排的第一个
make.top.mas_equalTo(listButton.mas_bottom).offset(15);
make.left.mas_equalTo(self.tagImageView).offset(0);
buttonRight = 30 titleW;
}else{
//非第一个
make.top.mas_equalTo(listButton.mas_top).offset(0);
make.left.mas_equalTo(listButton.mas_right).offset(15);
}
}else{
//第一个
make.top.mas_equalTo(tagView.mas_bottom).offset(25);
make.left.mas_equalTo(self.tagImageView).offset(0);
buttonRight = 30 titleW;
}
make.size.mas_equalTo(CGSizeMake(titleW, 20));
}];
listButton = button;
}
