iPhone開發之實現UITableView多選刪除功能詳解

很多情況下應用需要批量處理功能，但UITableView並沒有類似的功能，但我們可以自己實現。

首先在UITableView的 edittingStyleForRowAtIndexPath函數中，添加如下代碼：

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{

returnUITableViewCellEditingStyleDelete | UITableViewCellEditingStyleInsert;

}

這樣我們就可以得到下面的效果：

注意：初始時設置TableView setEditing=YES;

具體實現：

1. //
2. // CloViewController.m
3. // MuTableViewTest
4. //
5. // Created by Cloay on 12-6-26.
6. // Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
7. //
9. #import "CloViewController.h"
11. @interface CloViewController ()
13. @end
15. @implementation CloViewController
16. @synthesize dataArray;
17. @synthesize selectedDic;
19. - (IBAction)rightBtnPressed:(id)sender{
20. //顯示多選圓圈
21. [cloMableView setEditing:YES animated:YES];
22. rightBtn.title = @"確定";
23. [rightBtn setAction:@selector(rightBtnPressedWithSure:)];
24. }
26. - (IBAction)rightBtnPressedWithSure:(id)sender{
27. //do something with selected cells like delete
28. // NSLog(@"selectedDic------->:%@", self.selectedDic);
29. int count = [self.selectedDic count];
30. if (count > 0 ) {
31. for (int i = 0; i < count; i++) {
32. NSInteger row = [[self.selectedDic objectAtIndex:i] row];
33. [self.dataArray removeObjectAtIndex:row];
34. }
35. // NSLog(@"self.dataArray:------>:%@", self.dataArray);
36. [cloMableView deleteRowsAtIndexPaths:self.selectedDic withRowAnimation:UITableViewRowAnimationFade];
37. [self.selectedDic removeAllObjects];
38. // NSLog(@"self.selectedDic--------->:%@", self.selectedDic);
39. // [cloMableView reloadData];
40. rightBtn.title = @"刪除";
41. [rightBtn setAction:@selector(rightBtnPressed:)];
42. [cloMableView setEditing:NO animated:YES];
43. }else {
44. UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"未選中任何數據!" delegate:self cancelButtonTitle:@"確定" otherButtonTitles:@"重新選擇", nil];
45. [alert show];
46. [alert release];
47. }
48. }
50. - (void)viewDidLoad
51. {
52. [super viewDidLoad];
53. // Do any additional setup after loading the view, typically from a nib.
54. self.dataArray = [[NSMutableArray alloc] initWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", nil];
55. self.selectedDic = [[NSMutableArray alloc] init];
57. rightBtn = [[UIBarButtonItem alloc] initWithTitle:@"刪除" style:UIBarButtonItemStyleBordered target:self action:@selector(rightBtnPressed:)];
58. self.navigationItem.rightBarButtonItem = rightBtn;
59. }
61. - (void)viewDidUnload
62. {
63. [super viewDidUnload];
64. // Release any retained subviews of the main view.
65. }
67. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
68. {
69. return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
70. }
72. #pragma -mark
73. #pragma tableview data source method
74. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
75. return [self.dataArray count];
76. }
78. - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
79. return 1;
80. }
81. #pragma tableView delegate methods
82. - (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
83. return UITableViewCellEditingStyleDelete | UITableViewCellEditingStyleInsert;
84. }
86. - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{
87. return YES;
88. }
89. //添加一項
90. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
91. if ([rightBtn.title isEqualToString:@"確定"]) {
92. [self.selectedDic addObject:indexPath];
93. // NSLog(@"Select---->:%@",self.selectedDic);
94. }
95. }
97. //取消一項
98. - (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{
99. if ([rightBtn.title isEqualToString:@"確定"]) {
100. [self.selectedDic removeObject:indexPath];
101. // NSLog(@"Deselect---->:%@",self.selectedDic);
102. }
103. }
105. //選擇後
106. - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{
107. //
108. }
110. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
111. static NSString *tableViewIdentifier = @"TableViewIdentifier";
112. UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:tableViewIdentifier];
113. cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:tableViewIdentifier];
114. NSInteger row = [indexPath row];
115. cell.textLabel.text = [self.dataArray objectAtIndex:row];
116. return cell;
117. }
119. #pragma mark-
120. #pragma AlertView delegate method
121. - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
122. if (buttonIndex == 0) {
123. rightBtn.title = @"刪除";
124. [rightBtn setAction:@selector(rightBtnPressed:)];
125. [cloMableView setEditing:NO animated:YES];
126. }
127. }
128. @end

刪除後：