IOS開發之表視圖添加索引

2019-11-14 19:59:54

字體：大中小

來源：轉載

供稿：網友

我們要實現的效果如下。

1.修改ControlView.h，即添加變量dict，用于存儲TabelView的數據源。

Cpp代碼

#import <UIKit/UIKit.h>
@interface IkrboyViewController5 : UIViewController{
NSMutableDictionary *dict;
}
@end

#import <UIKit/UIKit.h>@interface IkrboyViewController5 : UIViewController{    NSMutableDictionary *dict;}@end

2.在ControlView.m添加如下修改

Cpp代碼

- (void)viewDidLoad
{
[super viewDidLoad];
[self initTableViewData];
// Do 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];
//將所有數據分為三組
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"];
//設置劃分數據的依據，即根據index分三組，index為0-1的為第一組，2-4為第二組，5為第三組
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];
}
}
}

- (void)viewDidLoad{    [super viewDidLoad];    [self initTableViewData];	// Do 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];    //將所有數據分為三組    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"];        //設置劃分數據的依據，即根據index分三組，index為0-1的為第一組，2-4為第二組，5為第三組    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.初始化TableView

Cpp代碼

//分為多少個分組
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [[dict allKeys] count];
}
//每個分組的數據單元個數
- (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;
}
//分組的標題，不實現下面的方法，不顯示分組標題
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
//dict allKeys取出的key arr無順序，需進行排序
NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];
return [arr objectAtIndex:section];
}
//列表右側的索引提示，不實現下面的方法，不顯示右側索引
-(NSArray *) sectionIndexTitlesForTableView: (UITableView *) tableView
{
//dict allKeys取出的key arr無順序，需進行排序
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;
}
//選中Cell響應事件
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];//選中后的反顯顏色即刻消失
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);
}

//分為多少個分組- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{	return [[dict allKeys] count];}//每個分組的數據單元個數- (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;}//分組的標題，不實現下面的方法，不顯示分組標題- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{    //dict allKeys取出的key arr無順序，需進行排序    NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];	return [arr objectAtIndex:section];}//列表右側的索引提示，不實現下面的方法，不顯示右側索引-(NSArray *) sectionIndexTitlesForTableView: (UITableView *) tableView{    //dict allKeys取出的key arr無順序，需進行排序    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;}//選中Cell響應事件- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    [tableView deselectRowAtIndexPath:indexPath animated:YES];//選中后的反顯顏色即刻消失    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);}