UIViewController里的控件自适应的时候，修改其他控件的约束

#import "TTeamInformationVC.h"

#import "TSessionTeamMemberCell.h"

#import "TMemberListTeamVC.h"

@interface TTeamInformationVC ()

@property (nonatomic, strong) UITextView *teamTitleTF;

@property (nonatomic, strong) UITextView *teamContentTF;

@property (nonatomic, strong) UILabel *memberLabel;

@property (nonatomic, strong) UIView *bottomView;

@property (nonatomic, strong) NSMutableArray *dataSource;

@end

@implementationTTeamInformationVC

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view.

[self setupUIAction];

}

- (void)viewDidLayoutSubviews{

[super viewDidLayoutSubviews];

_bottomView.mj_y = CGRectGetMaxY(_teamContentTF.frame);

}

#pragma mark -- 界面布局方法

- (void)setupUIAction{

self.pageTitle=self.title=@"群资料";

self.view.backgroundColor = SharedColor.themeGrey;

_dataSource = [NSMutableArray array];

//如果是群主

[self installOKOnlyText:@"修改"];

UIView*whiteView = [UIViewnew];

whiteView.backgroundColor = [UIColor whiteColor];

[self.viewaddSubview:whiteView];

UILabel*teamTitleLabel = [UILabelnew];

teamTitleLabel.textColor = [UIColor blackColor];

teamTitleLabel.text=@"群名称";

teamTitleLabel.font= [UIFontsystemFontOfSize:15];

[whiteViewaddSubview:teamTitleLabel];

[teamTitleLabelmas_makeConstraints:^(MASConstraintMaker *make) {

make.top.equalTo(whiteView.mas_top);

make.left.equalTo(whiteView.mas_left).offset(15);

make.height.equalTo(@40);

}];

_teamTitleTF = [UITextView new];

_teamTitleTF.textColor = [UIColor colorWithWhite:0 alpha:0.7];

_teamTitleTF.text = @"群名称";

_teamTitleTF.font = [UIFont systemFontOfSize:15];

_teamTitleTF.userInteractionEnabled = YES;//群主的时候打开

_teamTitleTF.delegate = self;

[whiteViewaddSubview:_teamTitleTF];

[_teamTitleTF mas_makeConstraints:^(MASConstraintMaker *make) {

make.left.equalTo(teamTitleLabel.mas_right).offset(30);

make.right.equalTo(whiteView.mas_right).offset(-15);

make.centerY.equalTo(teamTitleLabel.mas_centerY);

make.height.equalTo(@40);

}];

UILabel*lineLabel = [UILabelnew];

lineLabel.backgroundColor=RGBA(246,246,246,1.0);

[whiteViewaddSubview:lineLabel];

[lineLabelmas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.trailing.equalTo(whiteView);

make.top.equalTo(teamTitleLabel.mas_bottom);

make.height.equalTo(@1);

}];

UILabel*teamContentLabel = [UILabelnew];

teamContentLabel.textColor= [UIColorblackColor];

teamContentLabel.text=@"群介绍";

teamContentLabel.font= [UIFontsystemFontOfSize:15];

[whiteViewaddSubview:teamContentLabel];

[teamContentLabelmas_makeConstraints:^(MASConstraintMaker *make) {

make.top.equalTo(lineLabel.mas_bottom);

make.left.equalTo(whiteView.mas_left).offset(15);

make.height.equalTo(@40);

}];

_teamContentTF = [UITextView new];

_teamContentTF.textColor = [UIColor colorWithWhite:0 alpha:0.7];

_teamContentTF.text = @"群介绍内容";

_teamContentTF.font = [UIFont systemFontOfSize:15];

_teamContentTF.userInteractionEnabled = YES;//群主的时候打开

_teamContentTF.delegate = self;

[whiteViewaddSubview:_teamContentTF];

[_teamContentTF mas_makeConstraints:^(MASConstraintMaker *make) {

make.left.equalTo(teamContentLabel.mas_right).offset(30);

make.right.equalTo(whiteView.mas_right).offset(-15);

make.top.equalTo(lineLabel.mas_bottom);

make.height.equalTo(@40);

}];

_bottomView = [UIView new];

_bottomView.backgroundColor = [UIColor whiteColor];

[whiteViewaddSubview:_bottomView];

[_bottomView mas_makeConstraints:^(MASConstraintMaker *make) {

make.top.equalTo(teamContentLabel.mas_bottom);

make.leading.trailing.equalTo(whiteView);

make.height.equalTo(@145);

}];

UIView*lineLabelTwo = [UIViewnew];

lineLabelTwo.backgroundColor=RGBA(246,246,246,1.0);

[_bottomViewaddSubview:lineLabelTwo];

[lineLabelTwomas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.trailing.equalTo(whiteView);

make.top.equalTo(_bottomView.mas_top);

make.height.equalTo(@5);

}];

_memberLabel = [UILabel new];

_memberLabel.textColor = [UIColor blackColor];

_memberLabel.text = @"群成员（0人）";

_memberLabel.font = [UIFont systemFontOfSize:15];

[_bottomView addSubview:_memberLabel];

[_memberLabel mas_makeConstraints:^(MASConstraintMaker *make) {

make.top.equalTo(lineLabelTwo.mas_bottom);

make.left.equalTo(_bottomView.mas_left).offset(15);

make.height.equalTo(@40);

}];

UIButton *allBtn = [UIButton new];

[allBtnsetTitle:@"全部 >" forState:UIControlStateNormal];

[allBtnsetTitleColor:[UIColor colorWithWhite:0 alpha:0.7] forState:UIControlStateNormal];

[allBtnaddTarget:self action:@selector(allBtnClickAction:) forControlEvents:UIControlEventTouchUpInside];

[_bottomViewaddSubview:allBtn];

[allBtnmas_makeConstraints:^(MASConstraintMaker *make) {

make.right.equalTo(_bottomView.mas_right).offset(-15);

make.height.equalTo(@40);

make.centerY.equalTo(_memberLabel.mas_centerY);

}];

UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];

flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;

UICollectionView *memberCollection = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:flowLayout];

memberCollection.backgroundColor = [UIColor whiteColor];

memberCollection.delegate=self;

memberCollection.dataSource=self;

[memberCollectionregisterClass:[TSessionTeamMemberCell class] forCellWithReuseIdentifier:T_SessionTeam_Member_Cell];

[_bottomViewaddSubview:memberCollection];

CGFloatspacingF;

if (kScreenWidth > 320) {

//4寸以上的手机

spacingF = (kScreenWidth-50*5) /6.0;

}else{

//4寸手机

spacingF = (kScreenWidth-50*4) /5.0;

}

[memberCollectionmas_makeConstraints:^(MASConstraintMaker *make) {

make.top.equalTo(_memberLabel.mas_bottom);

make.height.equalTo(@100);

make.left.equalTo(_bottomView.mas_left).offset(spacingF);

make.right.equalTo(_bottomView.mas_right).offset(-spacingF);

}];

[whiteViewmas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.trailing.equalTo(self.view);

make.top.equalTo(self.view.mas_top).offset(1);

make.bottom.equalTo(_bottomView.mas_bottom);

}];

//如果不是契约群

UIButton*outTeamBtn = [UIButtonnew];

//群成员

[outTeamBtnsetTitle:@"退出该群"forState:UIControlStateNormal];

//群主

// [outTeamBtn setTitle:@"解散该群" forState:UIControlStateNormal];

[outTeamBtnsetTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

[outTeamBtnsetBackgroundColor:[UIColor redColor]];

[outTeamBtnaddTarget:self action:@selector(outTeamBtnClickAction:) forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:outTeamBtn];

//契约群隐藏

// outTeamBtn.hidden = YES;

[outTeamBtnmas_makeConstraints:^(MASConstraintMaker *make) {

make.leading.trailing.equalTo(self.view);

make.height.equalTo(@50);

make.bottom.equalTo(self.view.mas_bottom).offset(49 - TABBAR_HEIGHT);

}];

//kvo监听群介绍

[_teamContentTF addObserver:self forKeyPath:@"contentSize" options:NSKeyValueObservingOptionNew context:nil];

}

#pragma mark -- 全部按钮点击方法

- (void)allBtnClickAction:(UIButton*)sender{

TMemberListTeamVC *vc = [[TMemberListTeamVC alloc]init];

[self.navigationController pushViewController:vc animated:YES];

}

#pragma mark -- 底部按钮点击方法

- (void)outTeamBtnClickAction:(UIButton*)sender{

}

#pragma mark -- 输入框的处理

//kvo方法

- (void)observeValueForKeyPath:(NSString*)keyPath ofObject:(id)object change:(NSDictionary*)change context:(void*)context{

//文字超过控件的时候修改控件的大小

UITextView*view =(UITextView*)object;

if([keyPathisEqualToString:@"contentSize"]) {

view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, view.contentSize.height);

//更改群介绍内容下面的控件约束，调用layout的方法

//然后会在viewDidLayoutSubviews里实现具体的更新布局操作

[self.view setNeedsLayout];

}

#pragma mark -- UITextViewDelegate

- (void)textViewDidChange:(UITextView*)textView{

NSIntegerlimitNumber;

if(textView ==_teamContentTF) {

limitNumber =500;

}else{

if([textView.textisEqualToString:@""]) {

self.isEabled=NO;

}else{

self.isEabled=YES;

}

limitNumber =10;

}

UITextRange*selectedRange = [textViewmarkedTextRange];

//获取高亮部分

UITextPosition *pos = [textView positionFromPosition:selectedRange.start offset:0];

//如果在变化中是高亮部分在变，就不要计算字符了

if(selectedRange && pos) {

return;

}

NSString *nsTextContent = textView.text;

NSIntegerexistTextNum = nsTextContent.length;

if(existTextNum > limitNumber){

//截取到最大位置的字符(由于超出截部分在should时被处理了所在这里这了提高效率不再判断)

NSString*s = [nsTextContentsubstringToIndex:limitNumber];

if(textView ==_teamContentTF){

_teamContentTF.text= s;

}else{

_teamTitleTF.text= s;

}

// 计算剩余可输入字数超出最大可输入字数，就禁止输入

- (BOOL)textView:(UITextView*)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString*)text{

NSIntegerlimitNumber;

if(textView ==_teamContentTF) {

limitNumber =500;

}else{

limitNumber =10;

}

UITextRange*selectedRange = [textViewmarkedTextRange];

//获取高亮部分

UITextPosition *pos = [textView positionFromPosition:selectedRange.start offset:0];

//获取高亮部分内容

//NSString * selectedtext = [textView textInRange:selectedRange];

//如果有高亮且当前字数开始位置小于最大限制时允许输入

if(selectedRange && pos) {

NSInteger startOffset = [textView offsetFromPosition:textView.beginningOfDocument toPosition:selectedRange.start];

NSInteger endOffset = [textView offsetFromPosition:textView.beginningOfDocument toPosition:selectedRange.end];

NSRangeoffsetRange =NSMakeRange(startOffset, endOffset - startOffset);

if(offsetRange.location< limitNumber) {

returnYES;

}else{

returnNO;

}

NSString *comcatstr = [textView.text stringByReplacingCharactersInRange:range withString:text];

NSIntegercaninputlen = limitNumber - comcatstr.length;

if(caninputlen >=0){

returnYES;

}else{

NSIntegerlen = text.length+ caninputlen;

//防止当text.length + caninputlen < 0时，使得rg.length为一个非法最大正数出错

NSRangerg = {0,MAX(len,0)};

if(rg.length>0){

// 计算表情的宽度

NSString*s =@"";

//判断是否只普通的字符或asc码(对于中文和表情返回NO)

BOOL asc = [text canBeConvertedToEncoding:NSASCIIStringEncoding];

if(asc) {

s = [textsubstringWithRange:rg];//因为是ascii码直接取就可以了不会错

}else{

__blockNSIntegeridx =0;

__blockNSString *trimString =@"";//截取出的字串

//使用字符串遍历，这个方法能准确知道每个emoji是占一个unicode还是两个

[text enumerateSubstringsInRange:NSMakeRange(0, [text length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock: ^(NSString* substring,NSRange substringRange,NSRange enclosingRange,BOOL* stop) {

if(idx >= rg.length) {

*stop =YES;//取出所需要就break，提高效率

return;

}

trimString = [trimString stringByAppendingString:substring];

idx++;

}];

s = trimString;

}

//rang是指从当前光标处进行替换处理(注意如果执行此句后面返回的是YES会触发didchange事件)

textView.text = [textView.text stringByReplacingCharactersInRange:range withString:[text substringWithRange:rg]];

}

returnNO;

}

#pragma mark -- UICollectionViewDataSource

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

if([KLUtil isSmallScreen]) {

if(_dataSource.count >=3) {

return4;

}else{

return_dataSource.count +1;

}

}else{

if(_dataSource.count >=4) {

return5;

}else{

return_dataSource.count +1;

}

- (__kindofUICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

TSessionTeamMemberCell *cellA = [collectionView dequeueReusableCellWithReuseIdentifier:T_SessionTeam_Member_Cell forIndexPath:indexPath];

if(_dataSource.count >0&& indexPath.row < _dataSource.count) {

NSDictionary *dic = _dataSource[indexPath.row];

cellA.cellDic = dic;

}

returncellA;

}

#pragma mark -- UICollectionViewDelegate

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{

TSessionTeamMemberCell *cell = (TSessionTeamMemberCell *)[collectionView cellForItemAtIndexPath:indexPath];

if(!cell.cellDic) {

DLog(@"点击了加号cell");

}

#pragma mark -- UICollectionViewDelegateFlowLayout

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{

returnCGSizeMake(50,50);

}

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{

returnUIEdgeInsetsMake(0,0,0,0);

}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{

CGFloat spacingF;

if(kScreenWidth >320) {

//4寸以上的手机

spacingF = (kScreenWidth -50*5) /6.0;

}else{

//4寸手机

spacingF = (kScreenWidth -50*4) /5.0;

}

returnspacingF;

}

- (void)didReceiveMemoryWarning {

[superdidReceiveMemoryWarning];

// 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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UIViewController里的控件自适应的时候，修改其他控件的约束

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