iOS 图片选择器(仿微信)
HarveyDMIJ
7年前
<p>照片选择器是APP开发中经常使用的功能.比如对商品的评价,某些报告提交等都会用到.</p> <p>你只要继承我demo的HWPublishBaseController就可以了.在下面有说明.我在demo设置的是最多上传9张照片,你可以自己根据需求修改,在工程中搜索</p> <pre> <code class="language-objectivec">#define kMaxImageCount 9</code></pre> <p>这是我在项目中的使用,如图:</p> <p style="text-align:center"><img src="https://simg.open-open.com/show/ac418d79a8241243a5948ca0855729b0.png"></p> <p> </p> <p style="text-align:center"><img src="https://simg.open-open.com/show/1e068c98560986b0d18065ce9936e3a6.png"></p> <p> </p> <p style="text-align:center"><img src="https://simg.open-open.com/show/f485bba408b69c7b0439e7ef0e1f5de9.png"></p> <p> </p> <p>不废话,直接上代码.其中用了第三方的东西.我demo中的EvaluateViewController页是写功能的主要看这个页面就可以.它如上面所说就是继承的HWPublishBaseController.demo中的代码说明的很详细可以参照此样式自定义页面.先说一说Base页面.</p> <p>这是Base页面,你可以新建一个页面继承它,然后自定义页面样式.其中你可以根据需求是要大图的数据信息还是缩放的小图信息.这是小图的://方形压缩图image 数组 @property(nonatomic,strong) NSMutableArray <em>imageArray;这是大图的- (NSArray</em> )getBigImageArray;上传图片就要根据需求了,网上有很多.</p> <p>首先是.h文件</p> <pre> <code class="language-objectivec">// // HWPublishBaseController.h // PhotoSelector // // Created by 洪雯 on 2017/1/12. // Copyright © 2017年 洪雯. All rights reserved. // #import <UIKit/UIKit.h> #import <AssetsLibrary/AssetsLibrary.h> #import "HWCollectionViewCell.h" #import "JJPhotoManeger.h" #import "HWImagePickerSheet.h" @protocol HWPublishBaseViewDelegate <NSObject> @optional @end @interface HWPublishBaseController : UIViewController @property (nonatomic, assign) id<HWPublishBaseViewDelegate> delegate; @property (nonatomic, strong) UICollectionView *pickerCollectionView; @property (nonatomic, assign) CGFloat collectionFrameY; //选择的图片数据 @property(nonatomic,strong) NSMutableArray *arrSelected; //方形压缩图image 数组 @property(nonatomic,strong) NSMutableArray * imageArray; //大图image 数组 @property(nonatomic,strong) NSMutableArray * bigImageArray; //大图image 二进制 @property(nonatomic,strong) NSMutableArray * bigImgDataArray; //图片选择器 @property(nonatomic,strong) UIViewController *showActionSheetViewController; //collectionView所在view @property(nonatomic,strong) UIView *showInView; //图片总数量限制 @property(nonatomic,assign) NSInteger maxCount; //初始化collectionView - (void)initPickerView; //修改collectionView的位置 - (void)updatePickerViewFrameY:(CGFloat)Y; //获得collectionView 的 Frame - (CGRect)getPickerViewFrame; //获取选中的所有图片信息 - (NSArray*)getSmallImageArray; - (NSArray*)getBigImageArray; - (NSArray*)getALAssetArray; - (void)pickerViewFrameChanged; @end</code></pre> <p>这是.m文件 在新建页面调用 [self initPickerView];这个方法是 初始化collectionView 然后根据需求调用updatePickerViewFrameY这个方法这个是修改collectionView的位置即照片的显示位置.</p> <pre> <code class="language-objectivec">// // HWPublishBaseController.m // PhotoSelector // // Created by 洪雯 on 2017/1/12. // Copyright © 2017年 洪雯. All rights reserved. // #import "HWPublishBaseController.h" @interface HWPublishBaseController ()<UICollectionViewDelegate,UICollectionViewDataSource,JJPhotoDelegate,HWImagePickerSheetDelegate>{ NSString *pushImageName; //添加图片提示 UILabel *addImageStrLabel; } @property (nonatomic, strong) HWImagePickerSheet *imgPickerActionSheet; @end @implementation HWPublishBaseController static NSString * const reuseIdentifier = @"HWCollectionViewCell"; -(instancetype)init{ self = [super init]; if (self) { if (!_showActionSheetViewController) { _showActionSheetViewController = self; } } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. } /** 初始化collectionView */ -(void)initPickerView{ _showActionSheetViewController = self; UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init]; self.pickerCollectionView = [[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout]; if (_showInView) { [_showInView addSubview:self.pickerCollectionView]; }else{ [self.view addSubview:self.pickerCollectionView]; } self.pickerCollectionView.delegate=self; self.pickerCollectionView.dataSource=self; self.pickerCollectionView.backgroundColor = [UIColor whiteColor]; if(_imageArray.count == 0) { _imageArray = [NSMutableArray array]; } if(_bigImageArray.count == 0) { _bigImageArray = [NSMutableArray array]; } pushImageName = @"plus.png"; _pickerCollectionView.scrollEnabled = NO; //上传图片提示 addImageStrLabel = [[UILabel alloc]initWithFrame:CGRectMake(100, 50, 70, 20)]; addImageStrLabel.text = @"上传图片"; addImageStrLabel.textColor = [UIColor colorWithRed:153.0/255.0 green:153.0/255.0 blue:153.0/255.0 alpha:1.0]; [self.pickerCollectionView addSubview:addImageStrLabel]; } #pragma mark <UICollectionViewDataSource> - (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView { return 1; } - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { return _imageArray.count+1; } - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { // Register nib file for the cell UINib *nib = [UINib nibWithNibName:@"HWCollectionViewCell" bundle: [NSBundle mainBundle]]; [collectionView registerNib:nib forCellWithReuseIdentifier:@"HWCollectionViewCell"]; // Set up the reuse identifier HWCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier: @"HWCollectionViewCell" forIndexPath:indexPath]; if (indexPath.row == _imageArray.count) { [cell.profilePhoto setImage:[UIImage imageNamed:pushImageName]]; cell.closeButton.hidden = YES; //没有任何图片 if (_imageArray.count == 0) { addImageStrLabel.hidden = NO; } else{ addImageStrLabel.hidden = YES; } } else{ [cell.profilePhoto setImage:_imageArray[indexPath.item]]; cell.closeButton.hidden = NO; } [cell setBigImageViewWithImage:nil]; cell.profilePhoto.tag = [indexPath item]; //添加图片cell点击事件 UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapProfileImage:)]; singleTap.numberOfTapsRequired = 1; cell.profilePhoto .userInteractionEnabled = YES; [cell.profilePhoto addGestureRecognizer:singleTap]; cell.closeButton.tag = [indexPath item]; [cell.closeButton addTarget:self action:@selector(deletePhoto:) forControlEvents:UIControlEventTouchUpInside]; [self changeCollectionViewHeight]; return cell; } #pragma mark <UICollectionViewDelegate> //定义每个UICollectionView 的大小 - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath { return CGSizeMake(([UIScreen mainScreen].bounds.size.width-64) /4 ,([UIScreen mainScreen].bounds.size.width-64) /4); } //定义每个UICollectionView 的 margin - (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section { return UIEdgeInsetsMake(20, 8, 20, 8); } #pragma mark - 图片cell点击事件 //点击图片看大图 - (void) tapProfileImage:(UITapGestureRecognizer *)gestureRecognizer{ [self.view endEditing:YES]; UIImageView *tableGridImage = (UIImageView*)gestureRecognizer.view; NSInteger index = tableGridImage.tag; if (index == (_imageArray.count)) { [self.view endEditing:YES]; //添加新图片 [self addNewImg]; } else{ //点击放大查看 HWCollectionViewCell *cell = (HWCollectionViewCell*)[_pickerCollectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:index inSection:0]]; if (!cell.BigImageView || !cell.BigImageView.image) { [cell setBigImageViewWithImage:[self getBigIamgeWithALAsset:_arrSelected[index]]]; } JJPhotoManeger *mg = [JJPhotoManeger maneger]; mg.delegate = self; [mg showLocalPhotoViewer:@[cell.BigImageView] selecImageindex:0]; } } - (UIImage*)getBigIamgeWithALAsset:(ALAsset*)set{ //压缩 // 需传入方向和缩放比例，否则方向和尺寸都不对 UIImage *img = [UIImage imageWithCGImage:set.defaultRepresentation.fullResolutionImage scale:set.defaultRepresentation.scale orientation:(UIImageOrientation)set.defaultRepresentation.orientation]; NSData *imageData = UIImageJPEGRepresentation(img, 0.5); [_bigImgDataArray addObject:imageData]; return [UIImage imageWithData:imageData]; } #pragma mark - 选择图片 - (void)addNewImg{ if (!_imgPickerActionSheet) { _imgPickerActionSheet = [[HWImagePickerSheet alloc] init]; _imgPickerActionSheet.delegate = self; } if (_arrSelected) { _imgPickerActionSheet.arrSelected = _arrSelected; } _imgPickerActionSheet.maxCount = _maxCount; [_imgPickerActionSheet showImgPickerActionSheetInView:_showActionSheetViewController]; } #pragma mark - 删除照片 - (void)deletePhoto:(UIButton *)sender{ [_imageArray removeObjectAtIndex:sender.tag]; [_arrSelected removeObjectAtIndex:sender.tag]; [self.pickerCollectionView deleteItemsAtIndexPaths:@[[NSIndexPath indexPathForItem:sender.tag inSection:0]]]; for (NSInteger item = sender.tag; item <= _imageArray.count; item++) { HWCollectionViewCell *cell = (HWCollectionViewCell*)[self.pickerCollectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:item inSection:0]]; cell.closeButton.tag--; cell.profilePhoto.tag--; } [self changeCollectionViewHeight]; } #pragma mark - 改变view，collectionView高度 - (void)changeCollectionViewHeight{ if (_collectionFrameY) { _pickerCollectionView.frame = CGRectMake(0, _collectionFrameY, [UIScreen mainScreen].bounds.size.width, (((float)[UIScreen mainScreen].bounds.size.width-64.0) /4.0 +20.0)* ((int)(_arrSelected.count)/4 +1)+20.0); } else{ _pickerCollectionView.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, (((float)[UIScreen mainScreen].bounds.size.width-64.0) /4.0 +20.0)* ((int)(_arrSelected.count)/4 +1)+20.0); } [self pickerViewFrameChanged]; } /** * 相册完成选择得到图片 */ -(void)getSelectImageWithALAssetArray:(NSArray *)ALAssetArray thumbnailImageArray:(NSArray *)thumbnailImgArray{ //（ALAsset）类型 Array _arrSelected = [NSMutableArray arrayWithArray:ALAssetArray]; //正方形缩略图 Array _imageArray = [NSMutableArray arrayWithArray:thumbnailImgArray] ; [self.pickerCollectionView reloadData]; } - (void)pickerViewFrameChanged{ } - (void)updatePickerViewFrameY:(CGFloat)Y{ _collectionFrameY = Y; _pickerCollectionView.frame = CGRectMake(0, Y, [UIScreen mainScreen].bounds.size.width, (((float)[UIScreen mainScreen].bounds.size.width-64.0) /4.0 +20.0)* ((int)(_arrSelected.count)/4 +1)+20.0); } #pragma mark - 防止奔溃处理 -(void)photoViwerWilldealloc:(NSInteger)selecedImageViewIndex { NSLog(@"最后一张观看的图片的index是:%zd",selecedImageViewIndex); } - (UIImage *)compressImage:(UIImage *)image toMaxFileSize:(NSInteger)maxFileSize { CGFloat compression = 0.9f; CGFloat maxCompression = 0.1f; NSData *imageData = UIImageJPEGRepresentation(image, compression); while ([imageData length] > maxFileSize && compression > maxCompression) { compression -= 0.1; imageData = UIImageJPEGRepresentation(image, compression); } UIImage *compressedImage = [UIImage imageWithData:imageData]; return compressedImage; } //获得大图 - (NSArray*)getBigImageArrayWithALAssetArray:(NSArray*)ALAssetArray{ _bigImgDataArray = [NSMutableArray array]; NSMutableArray *bigImgArr = [NSMutableArray array]; for (ALAsset *set in ALAssetArray) { [bigImgArr addObject:[self getBigIamgeWithALAsset:set]]; } _bigImageArray = bigImgArr; return _bigImageArray; } #pragma mark - 获得选中图片各个尺寸 - (NSArray*)getALAssetArray{ return _arrSelected; } - (NSArray*)getBigImageArray{ return [self getBigImageArrayWithALAssetArray:_arrSelected]; } - (NSArray*)getSmallImageArray{ return _imageArray; } - (CGRect)getPickerViewFrame{ return self.pickerCollectionView.frame; } - (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</code></pre> <p>然后新建一个页面,继承base页面</p> <pre> <code class="language-objectivec">#import <UIKit/UIKit.h> #import "HWPublishBaseController.h" @interface EvaluateViewController : HWPublishBaseController @end</code></pre> <p>在这个.m页面自定义样式.用到上面我说的 [self initPickerView]和updatePickerViewFrameY这两个就基本完成样式设计.</p> <pre> <code class="language-objectivec">// // EvaluateViewController.m // PhotoSelector // // Created by 洪雯 on 2017/1/12. // Copyright © 2017年 洪雯. All rights reserved. // #import "EvaluateViewController.h" #import "BRPlaceholderTextView.h" #import "UIImageView+WebCache.h" #define iphone4 (CGSizeEqualToSize(CGSizeMake(320, 480), [UIScreen mainScreen].bounds.size)) #define iphone5 (CGSizeEqualToSize(CGSizeMake(320, 568), [UIScreen mainScreen].bounds.size)) #define iphone6 (CGSizeEqualToSize(CGSizeMake(375, 667), [UIScreen mainScreen].bounds.size)) #define iphone6plus (CGSizeEqualToSize(CGSizeMake(414, 736), [UIScreen mainScreen].bounds.size)) //默认最大输入字数为 kMaxTextCount 300 #define kMaxTextCount 300 #define HeightVC [UIScreen mainScreen].bounds.size.height//获取设备高度 #define WidthVC [UIScreen mainScreen].bounds.size.width//获取设备宽度 @interface EvaluateViewController ()<UIScrollViewDelegate,UITextViewDelegate> { float _TimeNUMX; float _TimeNUMY; int _FontSIZE; float allViewHeight; //备注文本View高度 float noteTextHeight; } /** * 主视图- */ @property (nonatomic, strong) UIScrollView *mianScrollView; @property (nonatomic, strong) BRPlaceholderTextView *noteTextView; //背景 @property (nonatomic, strong) UIView *noteTextBackgroudView; //文字个数提示label @property (nonatomic, strong) UILabel *textNumberLabel; //图片 @property (nonatomic,strong) UIImageView *photoImageView; //文字介绍 @property (nonatomic,copy) NSString *typeStr; @property (nonatomic,copy) NSString *upPeople; @property (nonatomic,copy) NSString *address; @property (nonatomic,strong) UIView * lineVCThree; @property (nonatomic,strong) UIButton * sureBtn; @property (nonatomic,strong) NSMutableDictionary * upDic; @property (nonatomic,strong) NSMutableArray * photoArr; @property (nonatomic,copy) NSString * photoStr; @property (nonatomic,copy) NSString * star_level; @property (nonatomic,copy) NSString * modelUrl; @end @implementation EvaluateViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.view.backgroundColor = [UIColor groupTableViewBackgroundColor]; self.navigationItem.title = @"评价"; self.modelUrl = @"图片地址"; self.typeStr = @"类型"; self.upPeople = @"上传者"; self.address = @"地 址 : %@"; //收起键盘 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(viewTapped)]; tap.cancelsTouchesInView = NO; [self.view addGestureRecognizer:tap]; self.star_level = @"1"; //监听键盘出现和消失 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil]; _TimeNUMX = [self BackTimeNUMX]; _TimeNUMY = [self BackTimeNUMY]; [self createUI]; } /** * 取消输入 */ - (void)viewTapped{ [self.view endEditing:YES]; } #pragma mark 键盘出现 -(void)keyboardWillShow:(NSNotification *)note { self.view.frame = CGRectMake(0, 0-200*_TimeNUMY, WidthVC,HeightVC); } #pragma mark 键盘消失 -(void)keyboardWillHide:(NSNotification *)note { self.view.frame = CGRectMake(0, 0, WidthVC, HeightVC); } - (void)createUI{ _mianScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, WidthVC, HeightVC)]; _mianScrollView.contentSize =CGSizeMake(WidthVC, HeightVC); _mianScrollView.bounces =YES; _mianScrollView.showsVerticalScrollIndicator = false; _mianScrollView.backgroundColor = [UIColor groupTableViewBackgroundColor]; [self.view addSubview:_mianScrollView]; [_mianScrollView setDelegate:self]; self.showInView = _mianScrollView; /** 初始化collectionView */ [self initPickerView]; [self initViews]; } /** * 初始化视图 */ - (void)initViews{ _noteTextBackgroudView = [[UIView alloc]init]; _noteTextBackgroudView.backgroundColor = [UIColor whiteColor]; ///照片 self.photoImageView = [[UIImageView alloc] initWithFrame:CGRectMake(20*_TimeNUMX, 20*_TimeNUMY, 80*_TimeNUMX, 90*_TimeNUMY)]; [self.photoImageView sd_setImageWithURL:[NSURL URLWithString:self.modelUrl] placeholderImage:[UIImage imageNamed:@"plus"]]; UIButton * clickImageBtn = [[UIButton alloc] initWithFrame:CGRectMake(20*_TimeNUMX, 20*_TimeNUMY, 80*_TimeNUMX, 90*_TimeNUMY)]; [clickImageBtn addTarget:self action:@selector(ClickImage:) forControlEvents:UIControlEventTouchUpInside]; clickImageBtn.backgroundColor = [UIColor clearColor]; ///详情 NSArray * infoArr = @[self.typeStr,self.upPeople]; for (int i = 0; i<infoArr.count; i++) { UILabel * infoLabel = [[UILabel alloc] initWithFrame:CGRectMake(120*_TimeNUMX, 20*_TimeNUMY+30*_TimeNUMY*i, WidthVC-120*_TimeNUMX, 30*_TimeNUMY)]; infoLabel.text = infoArr[i]; infoLabel.font = [UIFont systemFontOfSize:14.0+_FontSIZE]; [_noteTextBackgroudView addSubview:infoLabel]; } UILabel * info3Label = [[UILabel alloc] initWithFrame:CGRectMake(120*_TimeNUMX, 80*_TimeNUMY, WidthVC-120*_TimeNUMX, 40*_TimeNUMY)]; info3Label.numberOfLines = 0; info3Label.text = self.address; info3Label.font = [UIFont systemFontOfSize:14.0+_FontSIZE]; [_noteTextBackgroudView addSubview:info3Label]; UIView * lineVCOne = [[UIView alloc] initWithFrame:CGRectMake(0, 130*_TimeNUMY, WidthVC, 10*_TimeNUMY)]; lineVCOne.backgroundColor = [UIColor groupTableViewBackgroundColor]; UILabel * evaluateLabel = [[UILabel alloc] initWithFrame:CGRectMake(20*_TimeNUMX, lineVCOne.frame.origin.y+lineVCOne.frame.size.height+10*_TimeNUMY, 50*_TimeNUMX, 30*_TimeNUMY)]; evaluateLabel.text = @"总体"; evaluateLabel.font = [UIFont systemFontOfSize:14.0+_FontSIZE]; UIView * rView = [[UIView alloc]initWithFrame:CGRectMake(80*_TimeNUMX, lineVCOne.frame.origin.y+lineVCOne.frame.size.height+5*_TimeNUMY, 150*_TimeNUMX, 40*_TimeNUMY)]; // rView.ratingType = INTEGER_TYPE;//整颗星 // rView.delegate = self; UIView * lineVCTwo = [[UIView alloc] initWithFrame:CGRectMake(0, evaluateLabel.frame.origin.y+evaluateLabel.frame.size.height+10*_TimeNUMY, WidthVC, 10*_TimeNUMY)]; lineVCTwo.backgroundColor = [UIColor groupTableViewBackgroundColor]; //文本输入框 _noteTextView = [[BRPlaceholderTextView alloc]init]; _noteTextView.keyboardType = UIKeyboardTypeDefault; //文字样式 [_noteTextView setFont:[UIFont fontWithName:@"Heiti SC" size:15.5]]; _noteTextView.maxTextLength = kMaxTextCount; [_noteTextView setTextColor:[UIColor blackColor]]; _noteTextView.delegate = self; _noteTextView.font = [UIFont boldSystemFontOfSize:15.5]; _noteTextView.placeholder= @" 来分享您..."; self.noteTextView.returnKeyType = UIReturnKeyDone; [self.noteTextView setPlaceholderColor:[UIColor lightGrayColor]]; [self.noteTextView setPlaceholderOpacity:1]; _noteTextView.textContainerInset = UIEdgeInsetsMake(5, 15, 5, 15); _textNumberLabel = [[UILabel alloc]init]; _textNumberLabel.textAlignment = NSTextAlignmentRight; _textNumberLabel.font = [UIFont boldSystemFontOfSize:12]; _textNumberLabel.textColor = [UIColor colorWithRed:153.0/255.0 green:153.0/255.0 blue:153.0/255.0 alpha:1.0]; _textNumberLabel.backgroundColor = [UIColor whiteColor]; _textNumberLabel.text = [NSString stringWithFormat:@"0/%d ",kMaxTextCount]; self.lineVCThree = [[UIView alloc] init]; self.lineVCThree.backgroundColor = [UIColor groupTableViewBackgroundColor]; //确定按钮 self.sureBtn = [[UIButton alloc] init]; self.sureBtn.backgroundColor = [UIColor orangeColor]; [self.sureBtn setTitle:@"确定" forState:UIControlStateNormal]; self.sureBtn.titleLabel.font = [UIFont systemFontOfSize:17.0+_FontSIZE]; [self.sureBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [self.sureBtn setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted]; self.sureBtn.layer.masksToBounds = YES; self.sureBtn.layer.cornerRadius = 5.0; [self.sureBtn addTarget:self action:@selector(ClickSureBtn:) forControlEvents:UIControlEventTouchUpInside]; [_mianScrollView addSubview:_noteTextBackgroudView]; [_mianScrollView addSubview:_noteTextView]; [_mianScrollView addSubview:_textNumberLabel]; [_mianScrollView addSubview:self.lineVCThree]; [_mianScrollView addSubview:self.sureBtn]; [_noteTextBackgroudView addSubview:self.photoImageView]; [_noteTextBackgroudView addSubview:clickImageBtn]; [_noteTextBackgroudView addSubview:lineVCOne]; [_noteTextBackgroudView addSubview:evaluateLabel]; [_noteTextBackgroudView addSubview:rView]; [_noteTextBackgroudView addSubview:lineVCTwo]; [self updateViewsFrame]; } /** * 界面布局 frame */ - (void)updateViewsFrame{ if (!allViewHeight) { allViewHeight = 0; } if (!noteTextHeight) { noteTextHeight = 150*_TimeNUMY; } _noteTextBackgroudView.frame = CGRectMake(0, 0, WidthVC, 200*_TimeNUMY); //文本编辑框 _noteTextView.frame = CGRectMake(0, _noteTextBackgroudView.frame.origin.y+_noteTextBackgroudView.frame.size.height+10*_TimeNUMY, WidthVC, noteTextHeight); //文字个数提示Label _textNumberLabel.frame = CGRectMake(0, _noteTextView.frame.origin.y + _noteTextView.frame.size.height-15*_TimeNUMY , WidthVC-10*_TimeNUMX, 15*_TimeNUMY); self.lineVCThree.frame = CGRectMake(0*_TimeNUMX,_noteTextView.frame.origin.y+_noteTextView.frame.size.height, WidthVC, 10*_TimeNUMY); //photoPicker [self updatePickerViewFrameY:self.lineVCThree.frame.origin.y + self.lineVCThree.frame.size.height]; self.sureBtn.frame = CGRectMake(20*_TimeNUMX, [self getPickerViewFrame].origin.y+[self getPickerViewFrame].size.height+30*_TimeNUMY, WidthVC-40*_TimeNUMX, 40*_TimeNUMY); allViewHeight = self.sureBtn.frame.origin.y+self.sureBtn.frame.size.height+10*_TimeNUMY; _mianScrollView.contentSize = self.mianScrollView.contentSize = CGSizeMake(0,allViewHeight); } /** * 恢复原始界面布局 */ -(void)resumeOriginalFrame{ _noteTextBackgroudView.frame = CGRectMake(0, 0, WidthVC, 200*_TimeNUMY); //文本编辑框 _noteTextView.frame = CGRectMake(0, 40*_TimeNUMY, WidthVC, noteTextHeight); //文字个数提示Label _textNumberLabel.frame = CGRectMake(0, _noteTextView.frame.origin.y + _noteTextView.frame.size.height-15*_TimeNUMY , WidthVC-10*_TimeNUMX, 15*_TimeNUMY); } - (void)pickerViewFrameChanged{ [self updateViewsFrame]; } #pragma mark - UITextViewDelegate - (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{ //当前输入字数 _textNumberLabel.text = [NSString stringWithFormat:@"%lu/%d ",(unsigned long)_noteTextView.text.length,kMaxTextCount]; if (_noteTextView.text.length > kMaxTextCount) { _textNumberLabel.textColor = [UIColor redColor]; }else{ _textNumberLabel.textColor = [UIColor colorWithRed:153.0/255.0 green:153.0/255.0 blue:153.0/255.0 alpha:1.0]; } if ([text isEqualToString:@"\n"]) { [textView resignFirstResponder]; } [self textChanged]; return YES; } //文本框每次输入文字都会调用 -> 更改文字个数提示框 - (void)textViewDidChangeSelection:(UITextView *)textView{ // _textNumberLabel.text = [NSString stringWithFormat:@"%lu/%d ",(unsigned long)_noteTextView.text.length,kMaxTextCount]; if (_noteTextView.text.length > kMaxTextCount) { _textNumberLabel.textColor = [UIColor redColor]; } else{ _textNumberLabel.textColor = [UIColor colorWithRed:153.0/255.0 green:153.0/255.0 blue:153.0/255.0 alpha:1.0]; } [self textChanged]; } /** * 文本高度自适应 */ -(void)textChanged{ CGRect orgRect = self.noteTextView.frame;//获取原始UITextView的frame //获取尺寸 CGSize size = [self.noteTextView sizeThatFits:CGSizeMake(self.noteTextView.frame.size.width, MAXFLOAT)]; orgRect.size.height=size.height+10;//获取自适应文本内容高度 //如果文本框没字了恢复初始尺寸 if (orgRect.size.height > 100) { noteTextHeight = orgRect.size.height; }else{ noteTextHeight = 100; } [self updateViewsFrame]; } #pragma mark - UIScrollViewDelegate //用户向上偏移到顶端取消输入,增强用户体验 - (void)scrollViewDidScroll:(UIScrollView *)scrollView { if (scrollView.contentOffset.y < 0) { [self.view endEditing:YES]; } } #pragma mark 点击出大图方法 - (void)ClickImage:(UIButton *)sender{ } #pragma mark 确定评价的方法 - (void)ClickSureBtn:(UIButton *)sender{ if (self.noteTextView.text.length == 0 || self.noteTextView.text.length < 10) { NSLog(@"您的评价描述字数不够哦!"); return; } if (self.noteTextView.text.length > kMaxTextCount) { NSLog(@"您的评价描述字数太多了哦!"); return; } self.photoArr = [[NSMutableArray alloc] initWithArray:[self getBigImageArray]]; if (self.photoArr.count >9){ NSLog(@"最多上传9张照片!"); }else if (self.photoArr.count == 0){ NSLog(@"请上传照片!"); }else{ /** 上传的接口方法 */ } } #pragma mark 返回不同型号的机器的倍数值 - (float)BackTimeNUMX { float numX = 0.0; if (iphone4) { numX = 320 / 375.0; return numX; } if (iphone5) { numX = 320 / 375.0; return numX; } if (iphone6) { return 1.0; } if (iphone6plus) { numX = 414 / 375.0; return numX; } return numX; } - (float)BackTimeNUMY { float numY = 0.0; if (iphone4) { numY = 480 / 667.0; _FontSIZE = -2; return numY; } if (iphone5) { numY = 568 / 667.0; _FontSIZE = -2; return numY; } if (iphone6) { _FontSIZE = 0; return 1.0; } if (iphone6plus) { numY = 736 / 667.0; _FontSIZE = 2; return numY; } return numY; } - (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</code></pre> <p>最后的demo页面样式是这样的</p> <p style="text-align:center"><img src="https://simg.open-open.com/show/fc0449bab5c0f2dc041f0292dcf35b34.gif"></p> <p style="text-align:center">Untitled.gif</p> <p> </p> <p>来自：http://www.jianshu.com/p/cc710d0e6553</p> <p> </p>