嗨，我试图在可扩展的 tableview 中应用多个数组。
但是当我运行我的代码时，它显示异常。
异常：'无效更新：第1节中的行数无效。更新后现有节中包含的行数（4）必须等于更新前该节中包含的行数（0），加上或减去从该节插入或删除的行数（0 插入，0 删除）加上或减去移入或移出该节的行数（0 移入，0 移出）
如何解决此异常（或）任何其他示例可用，请建议我。
请帮我。
我的代码：
.m 文件
#import "ExpandableListviewWithServices.h"
@interface ExpandableListviewWithServices (){
BackGroundPostServiceClass3 * back;
NSMutableArray *arrayForBool,*totalListOfArray,*respArray;
NSArray *sectionTitleArray;
UITableView *tableList;
}
@end
@implementation ExpandableListviewWithServices
- (void)viewDidLoad {
[super viewDidLoad];
tableList = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStyleGrouped];
tableList.translatesAutoresizingMaskIntoConstraints = NO;
tableList.dataSource=self;
tableList.delegate=self;
tableList.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
tableList.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
tableList.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
[tableList registerClass:[UITableViewCell class] forCellReuseIdentifier:@"Cell"];
tableList.estimatedRowHeight = 44.0;
tableList.rowHeight = UITableViewAutomaticDimension;
[self.view addSubview:tableList];
NSDictionary * views = NSDictionaryOfVariableBindings(tableList);
NSArray * horizentalConstraint = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[tableList]-0-|" options:0 metrics:nil views:views];
NSArray * verticalConstraint = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[tableList]-0-|"options:0 metrics:nil views:views];
[self.view addConstraints:horizentalConstraint];
[self.view addConstraints:verticalConstraint];
[self initialization];
}
-(void)initialization
{
arrayForBool=[[NSMutableArray alloc]init];
sectionTitleArray=[[NSArray alloc]initWithObjects:
@"Apple",
@"Strawberry",
@"Grapes",
@"Orange",
@"Banana",
nil];
NSArray *new0=[[NSArray alloc]initWithObjects:@"Apple", @"Strawberry",@"Grapes",@"Orange", nil];
NSArray *new1=[[NSArray alloc]initWithObjects:@"Apple1", @"Strawberry1",@"Grapes1",@"Orange1"@"Orange1", nil];
NSArray *new2=[[NSArray alloc]initWithObjects:@"Apple2", @"Strawberry2",@"Grapes2",@"Orange2", nil];
NSArray *new3=[[NSArray alloc]initWithObjects:@"Apple3", @"Strawberry3",@"Grapes3",@"Orange3",@"Orange3", nil];
NSArray *new4=[[NSArray alloc]initWithObjects:@"Apple4", @"Strawberry4",@"Grapes4",@"Grapes4", nil];
totalListOfArray=[[NSMutableArray alloc]init];
[totalListOfArray addObject:new0];
[totalListOfArray addObject:new1];
[totalListOfArray addObject:new2];
[totalListOfArray addObject:new3];
[totalListOfArray addObject:new4];
for (int i=0; i<[sectionTitleArray count]; i++) {
[arrayForBool addObject:[NSNumber numberWithBool:NO]];
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([[arrayForBool objectAtIndex:section] boolValue]) {
return [respArray count];
}
else
return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"cell2";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
BOOL manyCells = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
// /********** If the section supposed to be closed *******************/
if(!manyCells)
{
cell.backgroundColor=[UIColor clearColor];
cell.textLabel.text=@"";
}
/********** If the section supposed to be Opened *******************/
else
{
cell.textLabel.text=[NSString stringWithFormat:@"%@",[respArray objectAtIndex:indexPath.row]];
cell.textLabel.font=[UIFont systemFontOfSize:15.0f];
cell.backgroundColor=[UIColor whiteColor];
cell.selectionStyle=UITableViewCellSelectionStyleNone;
}
cell.textLabel.textColor=[UIColor blackColor];
/********** Add a custom Separator with cell *******************/
UIView* separatorLineView = [[UIView alloc] initWithFrame:CGRectMake(0, 40, tableList.frame.size.width, 1)];
separatorLineView.backgroundColor = [UIColor blackColor];
[cell.contentView addSubview:separatorLineView];
return cell;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [sectionTitleArray count];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
/*************** Close the section, once the data is selected ***********************************/
[arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:NO]];
[tableList reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationAutomatic];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([[arrayForBool objectAtIndex:indexPath.section] boolValue]) {
return 40;
}
return 0;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 80;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return 15;
}
-(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
UIView *sectionView1=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,40)];
sectionView1.backgroundColor = [UIColor whiteColor];
return sectionView1;
}
#pragma mark - Creating View for TableView Section
//# #e0e0eb place this color
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerview = [[UIView alloc] init];
headerview.backgroundColor = [UIColor lightGrayColor];
headerview.frame = CGRectMake(0, 0, tableView.frame.size.width, 80);
headerview.tag=section;
UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(10, 20, tableList.frame.size.width, 25)];
label1.text = @"Hi";
[headerview addSubview:label1];
UITapGestureRecognizer *headerTapped = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(sectionHeaderTapped:)];
[headerview addGestureRecognizer:headerTapped];
return headerview;
}
#pragma mark - Table header gesture tapped
- (void)sectionHeaderTapped:(UITapGestureRecognizer *)gestureRecognizer{
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:gestureRecognizer.view.tag];
NSLog(@" index ---->>> %ld",(long)indexPath.section);
for (int i=0; i<[sectionTitleArray count]; i++){
if (indexPath.section == i) {
BOOL collapsed = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
for (int i=0; i<[sectionTitleArray count]; i++) {
if (indexPath.section==i) {
[arrayForBool replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:!collapsed]];
}else{
[arrayForBool replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:collapsed]];
}
}
[self selectedOption:(int)indexPath.section];
[tableList reloadSections:[NSIndexSet indexSetWithIndex:gestureRecognizer.view.tag] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
}
-(NSMutableArray *)selectedOption:(int)mySelectedItemData{
NSLog(@"%d",mySelectedItemData);
NSMutableArray *arrayValue=[[NSMutableArray alloc]init];
respArray=[[NSMutableArray alloc]init];
NSLog(@"%@",[totalListOfArray objectAtIndex:mySelectedItemData]);
NSLog(@"%d",[[totalListOfArray objectAtIndex:mySelectedItemData] count]);
for (int i=0; i< [[totalListOfArray objectAtIndex:mySelectedItemData]count]; i++) {
[arrayValue addObject:[[totalListOfArray objectAtIndex:mySelectedItemData] objectAtIndex:i]];
//[arrayValue addObject:[itemsArray objectAtIndex:mySelectedItemData]];
NSLog(@"array value is =======> %@",arrayValue);
[arrayForBool addObject:[NSNumber numberWithBool:NO]];
}
respArray=[arrayValue mutableCopy];
NSLog(@"respArray items are =====> %@",respArray);
return arrayValue;
}