iOS Development Table View Add index

The effect we have to achieve is as follows.

1. Modify ControlView.h, that is, add variable dict, which is used to store the Tabelview data source.

CPP Code

1. #import <UIKit/UIKit.h>
3. @interface ikrboyviewcontroller5:uiviewcontroller{
4. Nsmutabledictionary *dict;
5. }
7. @end

#import <UIKit/UIKit.h> @interface ikrboyviewcontroller5:uiviewcontroller{    nsmutabledictionary *dict;} @end

2. Add the following modifications to the CONTROLVIEW.M

CPP Code

2. -(void) Viewdidload
4. {
6. [Super Viewdidload];
8. [Self inittableviewdata];
10. additional setup after loading the view.
12. }
16. -(void) inittableviewdata{
18. NSBundle *bundle = [NSBundle mainbundle];
20. NSString *plistpath = [bundle pathforresource:@"User_head" oftype:@ "plist"];
22. Nsarray *dataarr = [[Nsarray alloc] initwithcontentsoffile:plistpath];
24. //Divide all data into three groups
26. Nsmutablearray *arr1 = [Nsmutablearray array];
28. Nsmutablearray *ARR2 = [Nsmutablearray array];
30. Nsmutablearray *ARR3 = [Nsmutablearray array];
34. Dict = [Nsmutabledictionary dictionary];
36. [Dict setobject:arr1 forkey:@"Group1"];
38. [Dict setobject:arr2 forkey:@"Group2"];
40. [Dict setobject:arr3 forkey:@"Group3"];
44. //Set the basis for dividing the data, that is, according to index divided into three groups, index 0-1 for the first group, 2-4 for the second group, 5 for the third group
46. For (Nsinteger index = 0; index < [Dataarr count]; index++) {
48. Nsdictionary *item = [Dataarr objectatindex:index];
50. if (index<2) {
52. [Arr1 Addobject:item];
54. }
56. Else if (index>=2&&index<5) {
58. [Arr2 Addobject:item];
60. }
62. Else if (index>=5) {
64. [Arr3 Addobject:item];
66. }
68. }
70. }

-(void) viewdidload{[Super Viewdidload]; [Self inittableviewdata];//does any additional setup after loading the view.}    -(void) inittableviewdata{nsbundle *bundle = [NSBundle mainbundle];    NSString *plistpath = [Bundle pathforresource:@ "User_head" oftype:@ "plist"];    Nsarray *dataarr = [[Nsarray alloc] initwithcontentsoffile:plistpath];    Divide all data into three groups nsmutablearray *arr1 = [Nsmutablearray array];    Nsmutablearray *ARR2 = [Nsmutablearray array];        Nsmutablearray *ARR3 = [Nsmutablearray array];    Dict = [Nsmutabledictionary dictionary];    [Dict setobject:arr1 forkey:@ "Group1"];    [Dict setobject:arr2 forkey:@ "Group2"];        [Dict setobject:arr3 forkey:@ "Group3"];        Set the basis for dividing the data, that is, according to index divided into three groups, index 0-1 for the first group, 2-4 for the second group, 5 for the third group for (Nsinteger index = 0; index < [Dataarr count]; index++) {        Nsdictionary *item = [Dataarr objectatindex:index];        if (index<2) {[arr1 addobject:item];          } else if (index>=2&&index<5) {  [Arr2 Addobject:item];        } else if (index>=5) {[Arr3 addobject:item]; }    }}

3. Initialize TableView

CPP Code

2. How many groups are divided
4. -(Nsinteger) Numberofsectionsintableview: (UITableView *) TableView
6. {
8. return [[Dict AllKeys] count];
10. }
12. Number of data units per grouping
14. -(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section
16. {
18. switch (section)
20. {
22. Case 0:
24. {
26. return [[Dict objectforkey:@"Group1"] count];
28. }
30. Case 1:
32. {
34. return [[Dict objectforkey:@"Group2"] count];
36. }
38. Case 2:
40. {
42. return [[Dict objectforkey:@"Group3"] count];
44. }
46. }
48. return 0;
50. }
52. Grouped headings, do not implement the following methods, do not display grouped headings
54. -(NSString *) TableView: (UITableView *) TableView titleforheaderinsection: (nsinteger) Section
56. {
58. //dict AllKeys removed key arr No order, need to be sorted
60. Nsarray *arr = [[Dict AllKeys] Sortedarrayusingselector: @selector (compare:)];
62. return [arr objectatindex:section];
64. }
66. Index hint to the right of the list, do not implement the following method, do not display the right index
68. -(Nsarray *) Sectionindextitlesfortableview: (UITableView *) TableView
70. {
72. //dict AllKeys removed key arr No order, need to be sorted
74. Nsarray *arr = [[Dict AllKeys] Sortedarrayusingselector: @selector (compare:)];
76. return arr;
78. }
82. -(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath
84. {
86. static NSString *cellidentifier = @"Mytablecell";
88. UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:cellidentifier];
92. Nsuinteger row = [Indexpath row];
94. Nsuinteger section = [Indexpath section];
96. Nsarray *arr;
100. switch (section) {
102. Case 0:
104. arr = [Dict objectforkey:@"Group1"];
106. Break ;
108. Case 1:
110. arr = [Dict objectforkey:@"Group2"];
112. Break ;
114. Case 2:
116. arr = [Dict objectforkey:@"Group3"];
118. Break ;
120. Default:
122. Break ;
124. }
128. Nsdictionary *rowdict = [arr objectatindex:row];
130. Cell.textLabel.text = [rowdict objectforkey:@"ItemName"];
132. NSLog (@"Cell.label.text =%@", [rowdict objectforkey:@"ItemName"]);
136. NSString *imagepath = [rowdict objectforkey:@"Itemimagepath"];
138. Cell.imageView.image = [UIImage Imagenamed:imagepath];
140. NSLog (@"cell.image.image =%@", ImagePath);
144. Cell.accessorytype = Uitableviewcellaccessorydisclosureindicator;
148. return cell;
150. }
154. Select cell Response Event
156. -(void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) indexpath{
158. [TableView Deselectrowatindexpath:indexpath Animated:yes]; //When selected, the inverse color disappears instantly
160. Nsuinteger row = [Indexpath row];
162. Nsuinteger section = [Indexpath section];
164. Nsarray *arr;
168. switch (section) {
170. Case 0:
172. arr = [Dict objectforkey:@"Group1"];
174. Break ;
176. Case 1:
178. arr = [Dict objectforkey:@"Group2"];
180. Break ;
182. Case 2:
184. arr = [Dict objectforkey:@"Group3"];
186. Break ;
188. Default:
190. Break ;
192. }
196. Nsdictionary *rowdict = [arr objectatindex:row];
198. NSString *username = [rowdict objectforkey:@"ItemName"];
200. NSLog (@"username=%@", userName);
202. }

Divided into how many groups-(Nsinteger) Numberofsectionsintableview: (UITableView *) Tableview{return [[Dict AllKeys] count];} Number of data units per packet-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) section{switch (        section) {case 0: {return [[dict objectforkey:@] Group1 "] count];        } Case 1: {return [[Dict objectforkey:@ "Group2"] count];        } Case 2: {return [[Dict objectforkey:@ "Group3"] count]; }} return 0;} Grouped headings, do not implement the following method, do not display group headings-(NSString *) TableView: (UITableView *) TableView titleforheaderinsection: (Nsinteger) section{//dict AllKeys takes out the key arr is no order and needs to be sorted nsarray *arr = [[Dict AllKeys] Sortedarrayusingselector: @selector (compare :)];return [arr objectatindex:section];} The index hint to the right of the list, does not implement the following method, does not display the right index-(Nsarray *) Sectionindextitlesfortableview: (UITableView *) tableview{//dict AllKeys removed key arr No order, need to be sorted nsarray *arr = [[Dict AllKeys] sortedarrayusingselector: @selector (comPare:)]; return arr;} -(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) indexpath{static    NSString *cellidentifier = @ "Mytablecell";        UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:cellidentifier];    Nsuinteger row = [Indexpath row];    Nsuinteger section = [Indexpath section];        Nsarray *arr;            Switch (section) {Case 0:arr = [dict objectforkey:@ "Group1"];        Break            Case 1:arr = [dict objectforkey:@ "Group2"];        Break            Case 2:arr = [dict objectforkey:@ "Group3"];        Break    Default:break;    } nsdictionary *rowdict = [arr 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;} Select cell Response Event-(void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) indexpath{[TableView    Deselectrowatindexpath:indexpath animated:yes];//the selected inverse color disappears immediately nsuinteger row = [Indexpath row];    Nsuinteger section = [Indexpath section];        Nsarray *arr;            Switch (section) {Case 0:arr = [dict objectforkey:@ "Group1"];        Break            Case 1:arr = [dict objectforkey:@ "Group2"];        Break            Case 2:arr = [dict objectforkey:@ "Group3"];        Break    Default:break;    } nsdictionary *rowdict = [arr objectatindex:row];    NSString *username = [rowdict objectforkey:@ "ItemName"]; NSLog (@ "username=%@", UserName);}

• Uitableview.zip (22.2 KB)

iOS Development Table View Add index