Question

我正在研究最近几天的桌面视图。但是，现在我被卡住了。实际上，我所做的是我想将单元格索引存储到一个可变数组中。我做了这个部分。但是，当我滚动表视图时，存储在数组中的数据将被刷新，并且我存储的索引将从该可变数组中删除。这是我到目前为止所做的代码......

（UITableViewCell *）tableView：（UITableView *）tableView cellForRowAtIndexPath：（NSIndexPath *）indexPath {

if（tableView == table1）{ static NSString * CellIdentifier = @“Cell”;

NSString *CellId = [NSString stringWithFormat:@"Cell %d",indexPath.row];

CellIdentifier = CellId;

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil)

{                
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    cell.selectionStyle = UITableViewCellSelectionStyleNone;

}
NSUserDefaults *defaults1 = [NSUserDefaults standardUserDefaults];
NSString *loadname1 = [defaults1 objectForKey:@"name1saved"];

NSUserDefaults *defaults2 = [NSUserDefaults standardUserDefaults];
NSString *loadname2 = [defaults2 objectForKey:@"name2saved"];

NSUserDefaults *defaults3 = [NSUserDefaults standardUserDefaults];
NSString *loadname3 = [defaults3 objectForKey:@"name3saved"];

NSUserDefaults *defaults4 = [NSUserDefaults standardUserDefaults];
NSString *loadname4 = [defaults4 objectForKey:@"name4saved"];

NSUserDefaults *defaults5 = [NSUserDefaults standardUserDefaults];
NSString *loadname5 = [defaults5 objectForKey:@"name5saved"];

NSUserDefaults *defaults6 = [NSUserDefaults standardUserDefaults];
NSString *loadname6 = [defaults6 objectForKey:@"name6saved"];

NSUserDefaults *defaults7 = [NSUserDefaults standardUserDefaults];
NSString *loadname7 = [defaults7 objectForKey:@"name7saved"];

NSUserDefaults *defaults8 = [NSUserDefaults standardUserDefaults];
NSString *loadname8 = [defaults8 objectForKey:@"name8saved"];

NSUserDefaults *defaults9 = [NSUserDefaults standardUserDefaults];
NSString *loadname9 = [defaults9 objectForKey:@"name9saved"];

NSUserDefaults *defaults10 = [NSUserDefaults standardUserDefaults];
NSString *loadname10 = [defaults10 objectForKey:@"name10saved"];

NSUserDefaults *defaults11 = [NSUserDefaults standardUserDefaults];
NSString *loadname11 = [defaults11 objectForKey:@"name11saved"];

NSUserDefaults *defaults12 = [NSUserDefaults standardUserDefaults];
NSString *loadname12 = [defaults12 objectForKey:@"name12saved"];

NSUserDefaults *defaults13 = [NSUserDefaults standardUserDefaults];
NSString *loadname13 = [defaults13 objectForKey:@"name13saved"];

NSUserDefaults *defaults14 = [NSUserDefaults standardUserDefaults];
NSString *loadname14 = [defaults14 objectForKey:@"name14saved"];

NSUserDefaults *defaults15 = [NSUserDefaults standardUserDefaults];
NSString *loadname15 = [defaults15 objectForKey:@"name15saved"];

NSUserDefaults *defaults16 = [NSUserDefaults standardUserDefaults];
NSString *loadname16 = [defaults16 objectForKey:@"name16saved"];

NSUserDefaults *defaults17 = [NSUserDefaults standardUserDefaults];
NSString *loadname17 = [defaults17 objectForKey:@"name17saved"];

NSUserDefaults *defaults18 = [NSUserDefaults standardUserDefaults];
NSString *loadname18 = [defaults18 objectForKey:@"name18saved"];

NSUserDefaults *defaults19 = [NSUserDefaults standardUserDefaults];
NSString *loadname19 = [defaults19 objectForKey:@"name19saved"];

NSUserDefaults *defaults20 = [NSUserDefaults standardUserDefaults];
NSString *loadname20 = [defaults20 objectForKey:@"name20saved"];

mTFArrayOfNames = [[NSMutableArray alloc]init ];

[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname1] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname2] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname3] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname4] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname5] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname6] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname7] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname8] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname9] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname10] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname11] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname12] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname13] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname14] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname15] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname16] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname17] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname18] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname19] atIndex:[mTFArrayOfNames count]] ;
[mTFArrayOfNames insertObject:[NSString stringWithFormat:@"%@", loadname20] atIndex:[mTFArrayOfNames count]] ;

NSLog(@"%@", mTFArrayOfNames);

if (indexPath.row == 0) {

    cell.textLabel.text = loadname1;
}

if (indexPath.row == 1) {
    cell.textLabel.text = loadname2;
}

if (indexPath.row == 2) {
    cell.textLabel.text = loadname3;
}
if (indexPath.row == 3) {
    cell.textLabel.text = loadname4;
}
if (indexPath.row == 4) {

    cell.textLabel.text = loadname5;
}

if (indexPath.row == 5) {
    cell.textLabel.text = loadname6;
}

if (indexPath.row == 6) {
    cell.textLabel.text = loadname7;
}
if (indexPath.row == 7) {
    cell.textLabel.text = loadname8;
}

if (indexPath.row == 8) {

    cell.textLabel.text = loadname9;
}

if (indexPath.row == 9) {
    cell.textLabel.text = loadname10;
}

if (indexPath.row == 10) {
    cell.textLabel.text = loadname11;
}
if (indexPath.row == 11) {
    cell.textLabel.text = loadname12;
}
if (indexPath.row == 12) {

    cell.textLabel.text = loadname13;
}

if (indexPath.row == 13) {
    cell.textLabel.text = loadname14;
}

if (indexPath.row == 14) {
    cell.textLabel.text = loadname15;
}
if (indexPath.row == 15) {
    cell.textLabel.text = loadname16;
}
if (indexPath.row == 16) {

    cell.textLabel.text = loadname17;
}

if (indexPath.row == 17) {
    cell.textLabel.text = loadname18;
}

if (indexPath.row == 18) {
    cell.textLabel.text = loadname19;
}
if (indexPath.row == 19) {
    cell.textLabel.text = loadname20;
}



cell.textLabel.font = [UIFont fontWithName:@"Bauhaus 93" size:18];
cell.textLabel.textColor = [UIColor whiteColor];
cell.textLabel.backgroundColor = [UIColor grayColor];
[cell.textLabel setTextAlignment:UITextAlignmentCenter];

return cell;

} }

（void）tableView：（UITableView *）tableView didSelectRowAtIndexPath：（NSIndexPath *）indexPath {

if（tableView == table1）{ UITableViewCell * selectedCell = [tableView cellForRowAtIndexPath：indexPath];

if ([selectedCell accessoryType] == UITableViewCellAccessoryNone) {
    [selectedCell setAccessoryType:UITableViewCellAccessoryCheckmark];

    [selectedIndexes addObject:[NSNumber numberWithInt:indexPath.row]];
    selectedCell.backgroundColor =[UIColor blueColor];

} else {
    [selectedCell setAccessoryType:UITableViewCellAccessoryNone];

    [selectedIndexes removeObject:[NSNumber numberWithInt:indexPath.row]];

    selectedCell.backgroundColor =[UIColor clearColor];

}
[tableView deselectRowAtIndexPath:indexPath animated:NO];


names = [[NSMutableArray alloc] init];

for (int i = 0; i < mTFArrayOfNames.count; i++)
{
    if ([self.table1 cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]].accessoryType == UITableViewCellAccessoryCheckmark) 
    {
        [names addObject:[mTFArrayOfNames objectAtIndex:i]];

  }
    NSLog(@"name1 is  %@", names);
}

} } 请帮我。谢谢你提前......

Answer 1

是否正在刷新names MutableArray？如果是这样，那是因为每次选择单元格时都要初始化它。因此最终删除了先前设定的值。

在委托中初始化names数组。也许在viewDidLoad或你初始化TableView
在didSelect中，在names数组中添加新对象

此外，在loadnameX中创建所有cellForRowAtIndexPath并添加到新初始化的mTFArrayOfNames是错误的逻辑。

从cellForRowAtIndexPath删除整个逻辑，并将其添加到viewDidLoad或初始化TableView的位置

滚动时，存储在数组中的表视图单元索引正在丢失

1 个答案: