代码演示:
AddressBookModel.m 用于创建第一个页面 包括cell的自定义高度问题
1 #import "ViewController.h"
2 #import "TableViewCell.h"
3 #import "DetailViewController.h"
4 @interface ViewController ()<UITableViewDataSource,UITableViewDelegate,DetailVCDelegate>
5
6
7 @property (weak, nonatomic) IBOutlet UITableView *tableView;
8 @property(nonatomic,strong)NSMutableArray *dataArray;
9
10
11 @end
12
13 @implementation ViewController
14
15 - (void)viewDidLoad {
16 [super viewDidLoad];
17 self.dataArray = [NSMutableArray array];
18
19 //预估tableViewCell的高度
20 self.tableView.estimatedRowHeight = 120;
21 //自适应高度(以后用这个)
22 self.tableView.rowHeight = UITableViewAutomaticDimension;
23
24 // self.navigationController.navigationBar.translucent = NO;
25
26 }
27
28 - (IBAction)insertbutton:(UIBarButtonItem *)sender {
29 DetailViewController *detailVC = [self.storyboard instantiateViewControllerWithIdentifier:@"ABC"];
30
31 //数据传入第一个界面的代理
32 detailVC.delegate = self;
33
34 [self.navigationController pushViewController:detailVC animated:YES];
35
36 }
37
38 - (IBAction)deleteButton:(UIBarButtonItem *)sender {
39
40 [self.tableView setEditing:!self.tableView.isEditing animated:YES];
41
42
43 }
44
45
46 //代理方法的实现
47 -(void)passValueDelegate:(AddressBookModel *)passModel
48 {
49 //代理方法传过来的值添加到数组中
50 [self.dataArray addObject:passModel];
51 //刷新tableView
52 [self.tableView reloadData];
53
54 }
55
56
57 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
58 {
59 return self.dataArray.count;
60
61 }
62
63 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
64 {
65 //注意 这里是TableViewCell记清楚
66 TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL" forIndexPath:indexPath];
67
68 cell.model = self.dataArray[indexPath.row];
69 // [self.tableView reloadData];
70
71 return cell;
72 }
73
74
75 //点击cell,返回第二个界面进行信息的修改
76 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
77 {
78 DetailViewController *detailVC = [self.storyboard instantiateViewControllerWithIdentifier:@"ABC"];
79 //属性赋值第二步 把dataArray赋值给属性传值的对象
80 detailVC.model = self.dataArray[indexPath.row];
81
82 //修改值的代理
83 detailVC.delegate = self;
84 //传递indexPath.row的作用是再传回来,作为代理方法中的参数使用
85 detailVC.index = indexPath.row;
86
87 [self.navigationController pushViewController:detailVC animated:YES];
88
89 }
90 //修改值的代理方法
91 -(void)changeValueToListVC:(AddressBookModel *)passModel index:(NSInteger)index
92 {
93 //替换数组 index位置的元素 为新的model
94 [self.dataArray replaceObjectAtIndex:index withObject:passModel];
95 // 刷新tableView
96 [self.tableView reloadData];
97
98 }
99
100
101
102
103
104
105 // 设置哪个cell可以编辑
106 -(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
107 {
108 return self;
109 }
110 //真正的执行编辑的事情
111 -(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
112 {
113 //在编辑时,以一定要先处理好数据源,然后再处理view
114 [self.dataArray removeObjectAtIndex:indexPath.row];
115 //tableView 删除一个cell的方法,第一个参数代表 删除哪个分区的cell 第二个参数代表 删除时的动画
116 [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationLeft];
117
118
119 }
TableViewCell.h 和 TableViewCell.m 文件 用于第一个界面的Model类的定义
1 #import <UIKit/UIKit.h> 2 #import "AddressBookModel.h" 3 @interface TableViewCell : UITableViewCell 4 5 @property (weak, nonatomic) IBOutlet UIImageView *image; 6 7 @property (weak, nonatomic) IBOutlet UILabel *lable1; 8 9 10 @property (weak, nonatomic) IBOutlet UILabel *lable2; 11 12 @property (weak, nonatomic) IBOutlet UILabel *lable3; 13 14 @property (weak, nonatomic) IBOutlet UILabel *lable4; 15 16 @property (weak, nonatomic) IBOutlet UILabel *content; 17 18 19 @property(nonatomic,strong)AddressBookModel *model; 20 21 @end
1 #import "TableViewCell.h"
2
3
4
5
6 @implementation TableViewCell
7
8 //重写model的setter方法 将model接收到的值,赋给本身的lable*********************
9 -(void)setModel:(AddressBookModel *)model
10 {
11 self.lable1.text = model.name;
12 self.lable2.text = model.age;
13 self.lable3.text = model.sex;
14 self.lable4.text = model.phone;
15 self.content.text = model.content;
16 // 把NSData转换成image类型 ****
17 self.image.image = [UIImage imageWithData:model.image];
18
19
20 }
21
22 @end
DetailViewController.h文件 用于第二个详情界面的属性定义
1 #import <UIKit/UIKit.h> 2 #import "AddressBookModel.h" 3 4 @protocol DetailVCDelegate <NSObject> 5 6 //传值的代理方法 7 -(void)passValueDelegate:(AddressBookModel *)passModel; 8 //修改的代理方法 9 -(void)changeValueToListVC:(AddressBookModel *)passModel index:(NSInteger)index; 10 11 @end 12 13 14 15 @interface DetailViewController : UIViewController 16 17 @property (weak, nonatomic) IBOutlet UIButton *image; 18 @property (weak, nonatomic) IBOutlet UITextField *lable1; 19 @property (weak, nonatomic) IBOutlet UITextField *lable2; 20 21 @property (weak, nonatomic) IBOutlet UITextField *lable3; 22 23 @property (weak, nonatomic) IBOutlet UITextField *lable4; 24 25 @property (weak, nonatomic) IBOutlet UITextView *content; 26 27 28 //代理传值的属性1 29 @property(nonatomic,assign)id<DetailVCDelegate>delegate; 30 31 //属性传值 32 @property(nonatomic,strong)AddressBookModel *model; 33 34 //代理传值的属性2 35 @property(nonatomic,assign)NSInteger index; 36 37 38 @end
DetailViewController.m文件 第二个界面设置,一二界面的传值,以及图片的设置显示
1 #import "DetailViewController.h"
2 #import "AddressBookModel.h"
3 @interface DetailViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIActionSheetDelegate>
4 //设置照片属性
5 @property(nonatomic,strong)NSData *imageDate;
6
7 @end
8
9 @implementation DetailViewController
10
11 - (void)viewDidLoad {
12 [super viewDidLoad];
13 // Do any additional setup after loading the view.
14
15 self.navigationController.navigationBar.translucent = NO;
16 [self loadLTview];
17 }
18
19
20 -(void)loadLTview
21 {
22 self.lable1.text = self.model.name;
23
24 self.lable2.text = self.model.age;
25 self.lable3.text = self.model.sex;
26 self.lable4.text = self.model.phone;
27 self.content.text = self.model.content;
28
29 // 把前一页面传入的NSData类型的数据转换成image *****************
30 [self.image setImage:[UIImage imageWithData:self.model.image] forState:UIControlStateNormal];
31
32 }
33
34
35
36 - (IBAction)saveButtonClick:(UIButton *)sender {
37 //获取到所有可输入控件上的输入的数据
38 NSString *nameStr = self.lable1.text;
39 NSString *ageStr = self.lable2.text;
40 NSString *sexStr = self.lable3.text;
41 NSString *phoneStr = self.lable4.text;
42 NSString *contentStr = self.content.text;
43
44
45 //初始化一个model 传输照片时,要注意这里的格式***********
46 AddressBookModel *model = [[AddressBookModel alloc] initWithName:nameStr age:ageStr sex:sexStr pnone:phoneStr content:contentStr image:self.imageDate];
47
48 // 判断代理人是否存在，代理人是否注册了passValueDelegate 和
49 if (self.delegate && [self.delegate respondsToSelector:@selector(passValueDelegate:)] && [self.delegate respondsToSelector:@selector(changeValueToListVC:index:)]) {
50 // 如果self.model是否存在，如果存在 则判定为是修改联系人，所以 触发changeValueToListVC:index:方法
51 if (self.model != nil) {
52 // 填入的两个参数，第一个是model 注意 这个model是自己创建的 不是属性的model 第二个参数 index。告诉上一个页面需要替换数组中哪个位置的元素
53 [self.delegate changeValueToListVC:model index:self.index];
54 } else{
55 // 直接把自己创建的model 返回去
56 [self.delegate passValueDelegate:model];
57 }
58 }
59
60 [self.navigationController popToRootViewControllerAnimated:YES];
61 }
62
63
64
65 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
66 {
67 [self.view endEditing:YES];
68
69 }
70
71
72 //照片的设置------------------------------------------------------------
73 - (IBAction)imagePickerButtonVlicked:(UIButton *)sender {
74
75 UIActionSheet *action = [[UIActionSheet alloc] initWithTitle:@"选取照片" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"相机",@"相册", nil];
76
77 [action showFromRect:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) inView:self.view animated:YES];
78 }
79
80
81 -(void)setImagePickerController:(UIImagePickerControllerSourceType)source
82 {
83 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
84
85 imagePicker.sourceType = source;
86
87
88 imagePicker.delegate = self;
89
90
91
92 [imagePicker setEditing:YES];
93 imagePicker.allowsEditing = YES;
94
95 //模态推出视图
96 [self presentViewController:imagePicker animated:YES completion:nil];
97
98 }
99
100 -(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
101 {
102 switch (buttonIndex) {
103 case 0:
104 [self setImagePickerController:UIImagePickerControllerSourceTypeCamera];
105 break;
106 case 1:
107 [self setImagePickerController:UIImagePickerControllerSourceTypePhotoLibrary];
108 break;
109
110 default:
111 break;
112 }
113
114 }
115
116 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
117 {
118
119 //如果图片编辑之后 需要使用 UIImagePickerControllerEditedImage
120 //如果图片没有编辑 只需获取 UIImagePickerControllerOriginalImage
121 // UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
122 UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
123
124 //UIImagePNGRepresentation 把图片转化成PNG格式 不压缩比较大
125 // UIImageJPEGRepresentation 把图片转化成JPEG的格式，第二个参数填的是一个压缩的系数，一般是 0.5
126 // NSDate *data = UIImagePNGRepresentation(<#UIImage *image#>);
127
128 //照片传递到上一界面时,这里要进行数据的转化***
129 self.imageDate = UIImageJPEGRepresentation(image, 0.5);
130
131 [self.image setImage:image forState:UIControlStateNormal];
132
133 [picker dismissViewControllerAnimated:YES completion:nil];
134
135 }
AddressBookModel.h 和 AddressBookModel.m主要作用创建公共属性以供调用或使用
1 #import <Foundation/Foundation.h> 2 3 @interface AddressBookModel : NSObject 4 5 @property(nonatomic,copy)NSString *name; 6 @property(nonatomic,copy)NSString *age; 7 @property(nonatomic,copy)NSString *sex; 8 @property(nonatomic,copy)NSString *phone; 9 @property(nonatomic,copy)NSString *content; 10 @property(nonatomic,copy)NSData *image; 11 12 13 -(id)initWithName:(NSString *)nameStr 14 age:(NSString *)age 15 sex:(NSString *)sex 16 pnone:(NSString *)phone 17 content:(NSString *)content 18 image:(NSData *)image; 19 20 21 22 23 @end
1 #import "AddressBookModel.h"
2
3 @implementation AddressBookModel
4
5 -(id)initWithName:(NSString *)nameStr age:(NSString *)age sex:(NSString *)sex pnone:(NSString *)phone content:(NSString *)content image:(NSData *)image
6 {
7
8 self = [super init];
9 if (self) {
10 _name = nameStr;
11 _age = age;
12 _sex = sex;
13 _phone = phone;
14 _content = content;
15 _image = image;
16
17 }
18
19 return self;
20
21 }
22
23
24
25
26 @end
界面搭建图:
效果图:
时间： 2024-09-29 21:54:24