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
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//
// 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
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2:根据屏幕宽度变化。
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//// 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
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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留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/leemin_ios/article/details/53176588
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