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最近项目用到了类似历史记录的字体排版那样的布局，虽然网络上有好多，自己也就写了一个练练手，比较简单，有问题请留言，不喜勿喷，直接上代码。
- 封装一个view
/**
* 初始化
* @param frame 布局的视图的frame
* @param aTitle 标题
* @param aArray 传入的内容（数组里面是字符串）
*/
- (instancetype)initWithFrame:(CGRect)frame title:(NSString *)aTitle array:(NSArray *)aArray
{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor lightGrayColor];
[self viewLayoutWithTitle:aTitle array:aArray];
}
return self;
}
//计算关键词按钮的位置
- (void)viewLayoutWithTitle:(NSString *)aTitle array:(NSArray *)aArray
{
if (![aArray isKindOfClass:[NSArray class]]) {
return;
}
//删除当前视图所有子视图
[self removeAllSubviews];
//title
UILabel *tipLabel = [[UILabel alloc] initWithFrame:CGRectMake(12, 12, self.frame.size.width-12-12, 18)];
tipLabel.font = [UIFont boldSystemFontOfSize:15];
tipLabel.text = aTitle?:@"";
[self addSubview:tipLabel];
float zX = 12;//记录按钮的X
float zY = 36;//记录按钮的Y
float zH = 30;//记录按钮的高
for (int i=0; i<aArray.count; i++) {
CGSize size = [aArray[i] boundingRectWithSize:CGSizeMake(self.frame.size.width - 12*3, 18) options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:15]} context:nil].size;
size.width +=18;//每个按钮的长度
//如果摆放的按钮大于屏幕宽 则另起一行
if ((zX+size.width+12) > self.frame.size.width) {
zY += zH+10;//10是按钮上下间的间隔
zX = 12;//初始值
}
//最后一个按钮离底部距离
if ((zY+zH)>self.frame.size.height) {
CGRect sViewRect = self.frame;
sViewRect.size.height += (10+zH); //加一个上下间隔和按钮高度
self.frame = sViewRect;
}
UIButton *buton = [UIButton buttonWithType:UIButtonTypeCustom];
buton.backgroundColor = [UIColor whiteColor];
buton.frame = CGRectMake(zX, zY, size.width, zH);
buton.tag = i;
[buton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[buton setTitle:aArray[i] forState:UIControlStateNormal];
buton.titleLabel.font = [UIFont systemFontOfSize:15];
buton.layer.cornerRadius = 9;
buton.layer.masksToBounds = YES;
buton.layer.borderWidth = 1;
buton.layer.borderColor = [UIColor lightGrayColor].CGColor;
[buton addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:buton];
zX += buton.frame.size.width+12;//12是按钮左右间的间隔
}
}
- (void)buttonAction:(UIButton *)sender
{
NSLog(@"点击第%ld个按钮",(long)sender.tag);
}
- (void)removeAllSubviews
{
while (self.subviews.count) {
[self.subviews.lastObject removeFromSuperview];
}
}
- 在控制器中直接调用view使用
//模拟数据
NSArray *recordArray = @[@"Classical",@"摇滚",@"art",@"rock",@"波普哈哈",@"pop",@"说唱", @"pop",@"rap",@"雷鬼",@"reg",@"gae",@"索尔", @"古典音",@"Pop",@"music:", @"流",@"行音乐",@"Bl", @"蓝调歌曲",@"忧郁音乐",@"Rock", @"Roll",@"electrophonic", @"music", @"电",@"音乐",@"ambient", @"情境音乐",@"trance",@"舞曲",@"classical",@"摇滚乐",@"Jazz"];
//封装的那个view
CCRecordView *recordView = [[CCRecordView alloc] initWithFrame:CGRectMake(0, 100, MAIN_SCREEN_WIDTH, 120) title:@"这里有记录" array:recordArray];
[self.view addSubview:recordView];
- 和上面的oc代码一样，先创建一个CCRecordView
/**
* 初始化
* @param aFrame 布局的视图的frame
* @param aTitle 标题
* @param aArray 传入的内容（数组里面是字符串）
*/
init(aFrame: CGRect, aTitle: NSString, aArray: NSArray) {
super.init(frame: aFrame)
self.backgroundColor = UIColor.lightGray
self.viewLayoutWith(aTitle: aTitle, aArray: aArray)
}
- 计算字体布局
func viewLayoutWith(aTitle: NSString, aArray: NSArray) {
if aArray.isKind(of: NSArray.classForCoder()) == false {
return
}
self.removeAllSubviews()
//title
let tipLabel = UILabel.init(frame: CGRect.init(x: 12, y: 12, width: self.frame.size.width-12-12, height: 18))
tipLabel.font = UIFont.boldSystemFont(ofSize: 15)
tipLabel.text = aTitle as String
self.addSubview(tipLabel)
var zX = CGFloat(12) //记录按钮的X
var zY = CGFloat(36) //记录按钮的Y
let zH = CGFloat(30) //记录按钮的高
for (index,value) in aArray.enumerated() {
let valueC : String = value as! String
var size = SizeWithFont(content: valueC as NSString, font: UIFont.systemFont(ofSize: 15), maxSize: CGSize.init(width: self.frame.size.width - 12*3, height: 18))
size.width = size.width + 18 //每个按钮的长度
//如果摆放的按钮大于屏幕宽 则另起一行
if (zX+size.width+12) > self.frame.size.width {
zY = zY + (zH+10) //10是按钮上下间的间隔
zX = 12 //初始值
}
//最后一个按钮离底部距离
if (zY+zH)>self.frame.size.height {
//加一个上下间隔和按钮高度
self.frame.size.height = self.frame.size.height + (10+zH)
}
let buton = UIButton.init(type: .custom)
buton.tag = index
buton.frame = CGRect.init(x: zX, y: zY, width: size.width, height: zH)
buton.backgroundColor = UIColor.white
buton.setTitle(valueC as String, for: .normal)
buton.setTitleColor(UIColor.blue, for: .normal)
buton.titleLabel?.font = UIFont.systemFont(ofSize: 15)
buton.layer.cornerRadius = 9
buton.layer.masksToBounds = true
buton.layer.borderWidth = 1
buton.layer.borderColor = UIColor.lightGray.cgColor
buton.addTarget(self, action: #selector(buttonAction(sender:)), for: .touchUpInside)
self.addSubview(buton)
zX = zX + (buton.frame.size.width+12) //12是按钮左右间的间隔
}
}
@objc func buttonAction(sender: UIButton) {
print("点击第\(sender.tag)个按钮")
}
- 扩展的方法
extension CCRecordView {
//removeAllSubviews
func removeAllSubviews() {
while self.subviews.count > 0{
self.subviews.last?.removeFromSuperview()
}
}
//font size
func SizeWithFont(content : NSString, font : UIFont, maxSize : CGSize) -> CGSize {
return content.boundingRect(with: maxSize, options: (NSStringDrawingOptions(rawValue: NSStringDrawingOptions.usesLineFragmentOrigin.rawValue | NSStringDrawingOptions.usesFontLeading.rawValue)), attributes: [NSAttributedStringKey.font : font], context: nil).size
}
}
- 在控制器中直接调用view使用
//模拟的数据
NSArray *recordArray = @[@"Classical",@"摇滚",@"art",@"rock",@"波普哈哈",@"pop",@"说唱", @"pop",@"rap",@"雷鬼",@"reg",@"gae",@"索尔", @"古典音",@"Pop",@"music:", @"流",@"行音乐",@"Bl", @"蓝调歌曲",@"忧郁音乐",@"Rock", @"Roll",@"electrophonic", @"music", @"电",@"音乐",@"ambient", @"情境音乐",@"trance",@"舞曲",@"classical",@"摇滚乐",@"Jazz"];
//封装的view
CCRecordView *recordView = [[CCRecordView alloc] initWithFrame:CGRectMake(0, 100, MAIN_SCREEN_WIDTH, 120) title:@"这里有记录" array:recordArray];
[self.view addSubview:recordView];
提交demo