下载demo链接：https://github.com/MinLee6/buttonShow.git
屏幕摆放的控件有两种方式，一种根据具体内容变化，一种根据屏幕宽度变化。
下面我分别将两个方式，用代码的方式呈现：
1:根据具体内容变化
// // StyleOneViewController.m // buttonShow // // Created by limin on 15/06/15. // Copyright © 2015年 信诺汇通信息科技(北京)有限公司. All rights reserved. // #import "StyleOneViewController.h" #import "UIViewExt.h" //每列间隔 #define KViewMargin 10 //每行列数高 #define KVieH 28 #define KscreenW [UIScreen mainScreen].bounds.size.width #define Color(R,G,B) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:1.0] @interface StyleOneViewController () { UIButton *tmpBtn; CGFloat btnW; CGFloat btnViewHeight; } /* 存放按钮的view */ @property(nonatomic,strong)UIView *btnsView; /* 按钮上的文字 */ @property(nonatomic,strong)NSMutableArray *btnMsgArrays; @property (nonatomic,strong) NSMutableArray* btnIDArrays; /** 所有按钮 */ @property(nonatomic,strong)NSMutableArray *allBtnArrays; /** 服务器提供按钮标签 */ @property(nonatomic,strong)NSArray *tagInfoArray; //-------展示选中的文字 /* 确认按钮 */ @property(nonatomic,strong)UIButton *sureButton; /* 文字 */ @property(nonatomic,strong)UILabel *showLabel; @end @implementation StyleOneViewController - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor whiteColor]; [self getTagMsg]; } -(void)getTagMsg { self.btnMsgArrays = [[NSMutableArray alloc]init]; _allBtnArrays = [[NSMutableArray alloc]init]; self.btnIDArrays = [[NSMutableArray alloc]init]; self.tagInfoArray = @[@{@"id":@"1",@"tagmsg":@"味道很好味道很好"}, @{@"id":@"1",@"tagmsg":@"环境不错"}, @{@"id":@"1",@"tagmsg":@"性价比高"}, @{@"id":@"1",@"tagmsg":@"位置好找"}, @{@"id":@"1",@"tagmsg":@"上菜快"}, @{@"id":@"1",@"tagmsg":@"菜量足"}, @{@"id":@"1",@"tagmsg":@"好吃"}, @{@"id":@"1",@"tagmsg":@"态度好，服务周到"} ]; //挨个赋值 for (int i=0; i<_tagInfoArray.count; i++) { NSDictionary *dict = _tagInfoArray[i]; [self.btnIDArrays addObject:dict[@"id"]]; [self.btnMsgArrays addObject:dict[@"tagmsg"]]; } [self createBtns]; } //创建按钮 -(void)createBtns{ //创建放置button的view self.btnsView = [[UIView alloc]initWithFrame:CGRectMake(10, 40, KscreenW-2*KViewMargin, 40)]; self.btnsView.backgroundColor = Color(237, 237, 237); [self.view addSubview:self.btnsView]; /** * 数组存放适配屏幕大小的每行按钮的个数 */ NSMutableArray *indexbtns=[self returnBtnsForRowAndCol]; //统计按钮View的高度 btnViewHeight=indexbtns.count*(KVieH+KViewMargin)+10; //设置btnView的高度 self.btnsView.height=btnViewHeight; NSInteger count=0; CGFloat Y; //循环创建按钮 for (int row=0; row<indexbtns.count; row++) { for (int col=0; col<[indexbtns[row]intValue]; col++) { CGFloat X; Y=10+row*(KViewMargin+KVieH); //按钮的宽 btnW=[self returnBtnWithWithStr:self.btnMsgArrays[count]]; if (tmpBtn&&col) { X=CGRectGetMaxX(tmpBtn.frame)+KViewMargin; }else{ X=KViewMargin+col*btnW; } UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(X, Y, btnW, KVieH)]; [btn setTitle:self.btnMsgArrays[count] forState:UIControlStateNormal]; btn.titleLabel.font=[UIFont systemFontOfSize:12]; btn.layer.borderWidth=1; btn.layer.borderColor = Color(156,156,156).CGColor; [btn setTitleColor:Color(156, 156, 156) forState:UIControlStateNormal]; [btn setTitleColor:Color(202, 48, 130) forState:UIControlStateSelected]; btn.backgroundColor=[UIColor clearColor]; btn.layer.cornerRadius=2; btn.tag=[self.btnIDArrays[count] integerValue]; [btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside]; [self.allBtnArrays addObject:btn]; tmpBtn=btn; [self.btnsView addSubview:btn]; count+=1; } } //创建确认按钮 UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(KViewMargin, self.btnsView.bottom+40, KscreenW-2*KViewMargin, 44)]; [btn setTitle:@"确认" forState:UIControlStateNormal]; [btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; btn.backgroundColor = Color(214, 116, 0); [btn addTarget:self action:@selector(showSelectedClick:) forControlEvents:UIControlEventTouchUpInside]; self.sureButton = btn; [self.view addSubview:btn]; //返回按钮 UIButton *btn2 = [[UIButton alloc]initWithFrame:CGRectMake((KscreenW-80)*0.5, self.view.height-80, 80, 80)]; [btn2 setTitle:@"返回" forState:UIControlStateNormal]; [btn2 setTitleColor:[UIColor purpleColor] forState:UIControlStateNormal]; btn2.layer.cornerRadius = 40; btn2.clipsToBounds = YES; btn2.layer.borderColor = [UIColor purpleColor].CGColor; btn2.layer.borderWidth = 2; [btn2 addTarget:self action:@selector(backBtnClick:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn2]; } #pragma mark-返回view中有几行几列按钮 -(NSMutableArray*)returnBtnsForRowAndCol{ CGFloat allWidth = 0.0; NSInteger countW=0; NSMutableArray *indexbtns=[NSMutableArray array]; NSMutableArray *tmpbtns=[NSMutableArray array]; for (int j=0;j<self.btnMsgArrays.count;j++) { CGFloat width=[self returnBtnWithWithStr:self.btnMsgArrays[j]]; allWidth+=width+KViewMargin; countW+=1; if (allWidth>KscreenW-10) { //判断第一行情况 NSInteger lastNum=[[tmpbtns lastObject]integerValue]; [indexbtns addObject:@(lastNum)]; [tmpbtns removeAllObjects]; allWidth=0.0; countW=0; j-=1; }else{ [tmpbtns addObject:@(countW)]; } } if (tmpbtns.count!=0) { NSInteger lastNum=[[tmpbtns lastObject]integerValue]; [indexbtns addObject:@(lastNum)]; } return indexbtns; } -(CGFloat)returnBtnWithWithStr:(NSString *)str{ //计算字符长度 NSDictionary *minattributesri = @{NSFontAttributeName:[UIFont systemFontOfSize:12]}; CGSize mindetailSizeRi = [str boundingRectWithSize:CGSizeMake(100, MAXFLOAT) options:NSStringDrawingUsesFontLeading attributes:minattributesri context:nil].size; return mindetailSizeRi.width+12; } #pragma mark-按钮点击事件 -(void)btnClick:(UIButton *)btn { btn.selected = !btn.isSelected; if (btn.isSelected) { btn.layer.borderColor = Color(202, 48, 130).CGColor; }else { btn.layer.borderColor = Color(156, 156, 156).CGColor; } } -(void)showSelectedClick:(UIButton *)btn { NSMutableArray *strArray = [[NSMutableArray alloc]init]; for (UIButton *btn in self.allBtnArrays) { if (btn.isSelected) { [strArray addObject:btn.currentTitle]; } } NSString *str = [strArray componentsJoinedByString:@" & "]; UIFont *font = [UIFont systemFontOfSize:14]; CGFloat strH = [str boundingRectWithSize:CGSizeMake(KscreenW-2*KViewMargin, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:font} context:nil].size.height; //展示文字 if (!self.showLabel) { UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(KViewMargin, self.sureButton.bottom+20, KscreenW-2*KViewMargin, strH)]; label.font = font; label.textColor = [UIColor redColor]; label.numberOfLines = 0; self.showLabel = label; [self.view addSubview:label]; } self.showLabel.text = str; self.showLabel.height = strH; } -(void)backBtnClick:(UIButton *)btn { [self dismissViewControllerAnimated:YES completion:nil]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end
2:根据屏幕宽度变化。
//// StyleTwoViewController.m // buttonShow // // Created by limin on 16/11/15. // Copyright © 2016年 君安信（北京）科技有限公司. All rights reserved. // #import "StyleTwoViewController.h" #import "UIViewExt.h" #define kTagMargin 14 #define kCellMargin 15 #define kScreenWidth [UIScreen mainScreen].bounds.size.width #define Color(R,G,B) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:1.0] @interface StyleTwoViewController () /* 按钮 */ @property(nonatomic,strong)NSMutableArray *btnsArray; /* 按钮文字 */ @property(nonatomic,strong)NSArray *tagsArray; /* 默认选择的按钮 */ @property(nonatomic,strong)UIButton *selectedBtn; /* 标签 */ @property(nonatomic,copy)NSString *selectTopicTitle; @end @implementation StyleTwoViewController - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor whiteColor]; [self getTagMsg]; } -(void)getTagMsg { _btnsArray = [NSMutableArray array]; //添加tag按钮 NSArray *tagsArray = @[@"美好生活1",@"美好生活2",@"美好生活3",@"美好生活4",@"美好生活5",@"美好生活6",@"美好生活7",@"美好生活8",@"美好生活9",@"美好生活10",@"美好生活11",@"美好生活12",@"美好生活13",@"美好生活14",@"美好生活15",@"美好生活16",@"美好生活17",@"美好生活18",@"美好生活19",@"美好生活20",@"美好生活21",@"美好生活22",@"美好生活23",@"美好生活24"]; _tagsArray = tagsArray; [self createTagSqures:tagsArray]; } #pragma mark - 创建方块 -(void)createTagSqures:(NSArray *)tags { //一行最多4个。 int maxCols = 4; //宽度、高度 CGFloat TotalWidth = kScreenWidth - 2*kCellMargin - (maxCols-1)*kTagMargin; CGFloat BtnWidth = TotalWidth / maxCols; CGFloat BtnHeight = 30; for (int i=0; i<tags.count; i++) { //创建按钮 UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.backgroundColor = Color(211, 156, 4); //设置按钮属性 [btn setBackgroundImage:[UIImage imageNamed:@"discover_btnbg"] forState:UIControlStateNormal]; [btn setBackgroundImage:[UIImage imageNamed:@"discover_btnbg"] forState:UIControlStateDisabled]; btn.adjustsImageWhenHighlighted = NO; [btn setTitleColor:Color(51, 51, 51) forState:UIControlStateNormal]; [btn setTitleColor:[UIColor whiteColor] forState:UIControlStateDisabled]; [btn.titleLabel setFont:[UIFont systemFontOfSize:13]]; btn.titleLabel.textAlignment = NSTextAlignmentCenter; btn.tag = i+10; // 监听点击 [btn addTarget:self action:@selector(TagBtnClick:) forControlEvents:UIControlEventTouchUpInside]; //按钮赋值 [btn setTitle:tags[i] forState:UIControlStateNormal]; [self.view addSubview:btn]; //计算frame int col = i % maxCols; int row = i / maxCols; btn.x = kCellMargin + col*(BtnWidth + kTagMargin); btn.y = 40 + 11 + row * (BtnHeight + kTagMargin); btn.width = BtnWidth; btn.height = BtnHeight; //设置所有按钮默认状态为NO 。 btn.enabled = YES; [self.btnsArray addObject:btn]; } //默认第一个按钮为选中 UIButton *btn = self.btnsArray[0]; btn.enabled = NO; self.selectedBtn = btn; self.selectTopicTitle = self.tagsArray[0]; //返回按钮 UIButton *btn2 = [[UIButton alloc]initWithFrame:CGRectMake((kScreenWidth-80)*0.5, self.view.height-160, 80, 80)]; [btn2 setTitle:@"返回" forState:UIControlStateNormal]; [btn2 setTitleColor:[UIColor purpleColor] forState:UIControlStateNormal]; btn2.layer.cornerRadius = 40; btn2.clipsToBounds = YES; btn2.layer.borderColor = [UIColor purpleColor].CGColor; btn2.layer.borderWidth = 2; [btn2 addTarget:self action:@selector(backBtnClick:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn2]; //创建确认按钮 UIButton *btn3 = [[UIButton alloc]initWithFrame:CGRectMake(kCellMargin, btn2.top-80, kScreenWidth-2*kCellMargin, 44)]; [btn3 setTitle:@"确认" forState:UIControlStateNormal]; [btn3 setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; btn3.backgroundColor = Color(214, 116, 0); [btn3 addTarget:self action:@selector(showSelectedClick:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn3]; } #pragma mark - 按钮点击事件 - (void)TagBtnClick:(UIButton *)button { //获取点击的button，取消选中样式 self.selectedBtn.enabled = YES; button.enabled = NO; self.selectedBtn = button; NSInteger index = button.tag-10; NSString *selectStr = self.tagsArray[index]; self.selectTopicTitle = selectStr; } -(void)showSelectedClick:(UIButton *)button { //保留选择标签的文字 NSLog(@"所选择的文字：%@",self.selectTopicTitle); UIAlertView *alert = [[UIAlertView alloc]initWithTitle:self.selectTopicTitle message:@"" delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil]; [alert show]; } -(void)backBtnClick:(UIButton *)btn { [self dismissViewControllerAnimated:YES completion:nil]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end
以上所述是小编给大家介绍的iOS 中根据屏幕宽度自适应分布按钮的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我们留言，小编会及时回复大家的。在此也非常感谢大家对查字典教程网的支持！
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