IOS之表视图单元格删除、移动及插入

1.实现单元格的删除，实现效果如下

1. - (void)viewDidLoad
2. {
3. [super viewDidLoad];
4. //设置导航栏
5. self.editButtonItem.title = @"编辑";
6. self.navigation.rightBarButtonItem = self.editButtonItem;
7. [self initTableViewData];
8. // Do any additional setup after loading the view.
9. }
10. - (void)didReceiveMemoryWarning
11. {
12. [super didReceiveMemoryWarning];
13. // Dispose of any resources that can be recreated.
14. }
15. -(void)initTableViewData{
16. NSBundle *bundle = [NSBundle mainBundle];
17. NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];
18. dataArr = [[NSMutableArray alloc] initWithContentsOfFile:plistPath];
19. }
20. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
21. {
22. return [dataArr count];
23. }
24. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
25. {
26. static NSString *CellIdentifier = @"tableCell";
27. UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
28. NSUInteger row = [indexPath row];
29. NSDictionary *rowDict = [dataArr objectAtIndex:row];
30. cell.textLabel.text =  [rowDict objectForKey:@"itemName"];
31. NSLog(@"cell.label.text =  %@",[rowDict objectForKey:@"itemName"]);
32. NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];
33. cell.imageView.image = [UIImage imageNamed:imagePath];
34. NSLog(@"cell.image.image  =  %@",imagePath);
35. cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
36. return cell;
37. }
38. //选中Cell响应事件
39. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
40. [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失
41. NSUInteger row = [indexPath row];
42. NSDictionary *rowDict = [dataArr objectAtIndex:row];
43. NSString *userName =  [rowDict objectForKey:@"itemName"];
44. NSLog(@"userName=%@",userName);
45. }
46. //返回编辑状态的style
47. - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
48. editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
49. {
50. //UITableViewCellEditingStyleInsert
51. //    return UITableViewCellEditingStyleNone;
52. return UITableViewCellEditingStyleDelete;
53. }
54. //完成编辑的触发事件
55. - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
56. forRowAtIndexPath:(NSIndexPath *)indexPath
57. {
58. if (editingStyle == UITableViewCellEditingStyleDelete)
59. {
60. [dataArr removeObjectAtIndex: indexPath.row];
61. //        [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
62. //                         withRowAnimation:UITableViewRowAnimationFade];
63. [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
64. withRowAnimation:UITableViewRowAnimationFade];
65. [tableView reloadData];
66. }
67. }
68. //UIViewController生命周期方法，用于响应视图编辑状态变化
69. - (void)setEditing:(BOOL)editing animated:(BOOL)animated {
70. [super setEditing:editing animated:animated];
71. [self.tableView setEditing:editing animated:YES];
72. if (self.editing) {
73. self.editButtonItem.title = @"完成";
74. } else {
75. self.editButtonItem.title = @"编辑";
76. }
77. }
78. @end

- (void)viewDidLoad
{
    [super viewDidLoad];
    //设置导航栏
     self.editButtonItem.title = @"编辑";
    self.navigation.rightBarButtonItem = self.editButtonItem;
    [self initTableViewData];
	// Do any additional setup after loading the view.
}
 
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
 
-(void)initTableViewData{
    NSBundle *bundle = [NSBundle mainBundle];
    NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];
    dataArr = [[NSMutableArray alloc] initWithContentsOfFile:plistPath];
}
 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [dataArr count];
}
 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"tableCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
 
    NSUInteger row = [indexPath row];
    NSDictionary *rowDict = [dataArr objectAtIndex:row];
    cell.textLabel.text =  [rowDict objectForKey:@"itemName"];
    NSLog(@"cell.label.text =  %@",[rowDict objectForKey:@"itemName"]);
 
    NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];
    cell.imageView.image = [UIImage imageNamed:imagePath];
    NSLog(@"cell.image.image  =  %@",imagePath);
 
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
 
    return cell;
}
 
//选中Cell响应事件
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失
    NSUInteger row = [indexPath row];
    NSDictionary *rowDict = [dataArr objectAtIndex:row];
    NSString *userName =  [rowDict objectForKey:@"itemName"];
    NSLog(@"userName=%@",userName);
}
 
//返回编辑状态的style
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
           editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //UITableViewCellEditingStyleInsert
//    return UITableViewCellEditingStyleNone;
    return UITableViewCellEditingStyleDelete;
}
//完成编辑的触发事件
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete)
    {
        [dataArr removeObjectAtIndex: indexPath.row];
        //        [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
        //                         withRowAnimation:UITableViewRowAnimationFade];
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
                         withRowAnimation:UITableViewRowAnimationFade];
        [tableView reloadData];
    }
}
//UIViewController生命周期方法，用于响应视图编辑状态变化
- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
    [super setEditing:editing animated:animated];
 
    [self.tableView setEditing:editing animated:YES];
    if (self.editing) {
     self.editButtonItem.title = @"完成";
    } else {
        self.editButtonItem.title = @"编辑";
    }
}
@end

2.移动单元格

1. //完成移动的触发事件，不添加该方法不实现移动功能
2. - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath
3. toIndexPath:(NSIndexPath *)destinationIndexPath
4. {
5. NSDictionary *item = [dataArr objectAtIndex:sourceIndexPath.row];
6. [dataArr removeObjectAtIndex:sourceIndexPath.row];
7. [dataArr insertObject:item atIndex:destinationIndexPath.row];
8. }

//完成移动的触发事件，不添加该方法不实现移动功能
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath
      toIndexPath:(NSIndexPath *)destinationIndexPath
{
    NSDictionary *item = [dataArr objectAtIndex:sourceIndexPath.row];
    [dataArr removeObjectAtIndex:sourceIndexPath.row];
    [dataArr insertObject:item atIndex:destinationIndexPath.row];
}

3.添加单元格。下面是自定义触发事件，即单击左下角的add按钮

1. - (IBAction)addistItem:(UIBarButtonItem *)sender {
2. AppUtils *appUtils = [AppUtils alloc];
3. //需要先初始化一个UIAlertView
4. UIAlertView *alert = [UIAlertView alloc];
5. [appUtils showInputDialogWithTitle:@"add" message:@"please input new user name:" toAlertView:alert confirmAction:(^{
6. //得到输入框
7. UITextField *textField=[alert textFieldAtIndex:0];
8. //        不要写成NSMutableDictionary *newItem = [NSDictionary dictionary];
9. NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
10. [newItem setObject:textField.text forKey:@"itemName"];
11. [newItem setObject:@"1.jpeg" forKey:@"itemImagePath"];
12. [dataArr addObject:newItem];
13. [self.tableView reloadData];
14. })];
15. }

- (IBAction)addistItem:(UIBarButtonItem *)sender {
    AppUtils *appUtils = [AppUtils alloc];
    //需要先初始化一个UIAlertView
    UIAlertView *alert = [UIAlertView alloc];
    [appUtils showInputDialogWithTitle:@"add" message:@"please input new user name:" toAlertView:alert confirmAction:(^{
        //得到输入框
        UITextField *textField=[alert textFieldAtIndex:0];
//        不要写成NSMutableDictionary *newItem = [NSDictionary dictionary];
        NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
        [newItem setObject:textField.text forKey:@"itemName"];
        [newItem setObject:@"1.jpeg" forKey:@"itemImagePath"];
        [dataArr addObject:newItem];
        [self.tableView reloadData];
    })];
}

4.附上·AppUtils类

1. #import "AppUtils.h"
2. #include "RIButtonItem.h"
3. #include "UIAlertView+Blocks.h"
4. @implementation AppUtils
5. //弹出警告框，并实现警告框按钮的触发事件
6. - (void)showInputDialogWithTitle:(NSString *)title message:(NSString *)message toAlertView:(UIAlertView*) alert confirmAction:(void(^)(void))action{
7. RIButtonItem* cancelItem = [RIButtonItem item];
8. cancelItem.label = @"No";
9. cancelItem.action = ^
10. {
11. //为NO时的处理
12. UITextField *tf=[alert textFieldAtIndex:0];
13. NSLog(@"UITextField=%@",tf.text);
14. };
15. RIButtonItem* confirmItem = [RIButtonItem item];
16. confirmItem.label = @"Yes";
17. //    confirmItem.action = action;
18. alert = [alert initWithTitle:title
19. message:message
20. cancelButtonItem:cancelItem
21. otherButtonItems:confirmItem, nil];
22. alert.alertViewStyle = UIAlertViewStylePlainTextInput;
23. confirmItem.action = action;
24. [alert show];
25. }
26. @end

#import "AppUtils.h"
#include "RIButtonItem.h"
#include "UIAlertView+Blocks.h"
 
@implementation AppUtils
 
//弹出警告框，并实现警告框按钮的触发事件
- (void)showInputDialogWithTitle:(NSString *)title message:(NSString *)message toAlertView:(UIAlertView*) alert confirmAction:(void(^)(void))action{
    RIButtonItem* cancelItem = [RIButtonItem item];
    cancelItem.label = @"No";
    cancelItem.action = ^
    {
        //为NO时的处理
        UITextField *tf=[alert textFieldAtIndex:0];
        NSLog(@"UITextField=%@",tf.text);
    };
 
    RIButtonItem* confirmItem = [RIButtonItem item];
    confirmItem.label = @"Yes";
//    confirmItem.action = action;
    alert = [alert initWithTitle:title
                                                    message:message
                                           cancelButtonItem:cancelItem
                                           otherButtonItems:confirmItem, nil];
 
    alert.alertViewStyle = UIAlertViewStylePlainTextInput;
 
    confirmItem.action = action;
    [alert show];
}
@end