テーブル ビュー セル内に 2 つの UIButtons といくつかのラベルがあります。2 つのセクションがあり、最初のセクションには 1 つのテーブル ビュー セルが含まれ、そのセル内には、セクション 2 のセルの新しいデータを取得するために API を呼び出す 2 つの UIButtons があります。文字列が非常に長いため、セルの新しいフレームを作成する必要があります。
私が現在抱えている問題は、ボタンのテキストも新しい情報で更新され、文字列が短い場合や長い場合があるため、ボタンを削除して、新しいフレームに合わせて新しいボタンを追加する必要があることです。新しい文字列。ただし、以前のボタン文字列が新しいボタン文字列よりも短かった場合、ボタンは引き続き背景に表示されます。スーパービューから削除しようとしましたが、スーパービューから削除されたことを確認しました（削除したらnullであることを確認してください）が、まだ画面に表示されています。UILabels でも同じことが起こります。また、タグ (viewWithTag:123) を使用してスーパー ビューからそれらを削除しようとしました。これを理解/修正するのに役立つポインタ、アイデア、提案、何か本当にありますか?
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
UIView *selectedBackgroundView = [[UIView alloc] initWithFrame:CGRectZero];
selectedBackgroundView.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.1];
cell.selectedBackgroundView = selectedBackgroundView;
if(cell==nil) { NSLog(@"Cell is still nil");}
}
cell.textLabel.text = nil;
cell.accessoryView = nil;
cell.detailTextLabel.text = nil;
cell.userInteractionEnabled = YES;
if(indexPath.section == 0)
{
dosageButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
amountButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[dosageButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
[dosageButton setContentEdgeInsets:UIEdgeInsetsMake(0, 15, 0, 0)];
[amountButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
[amountButton setContentEdgeInsets:UIEdgeInsetsMake(0, 15.5, 0, 0)];
if(strengths.count == 0) { [dosageButton setTitle:@"Dosage" forState:UIControlStateNormal];}
else
{
[dosageButton setTitle:selectedStrength forState:UIControlStateNormal];
CGSize stringsize = [selectedStrength sizeWithFont:[UIFont systemFontOfSize:14]];
[dosageButton setFrame:CGRectMake(5, 27.5, stringsize.width + 30, 30)];
}
if(quantity.count == 0) { [amountButton setTitle:@"Amount" forState:UIControlStateNormal];}
else
{
int value = [selectedQuantity intValue];
if (value == 1)
{
NSString *amountAndFormat = [NSString stringWithFormat:@"%@ %@", selectedQuantity, selectedFormat];
[amountButton setTitle:amountAndFormat forState:UIControlStateNormal];
CGSize stringsize = [selectedStrength sizeWithFont:[UIFont systemFontOfSize:14]];
CGSize amountSize = [amountAndFormat sizeWithFont:[UIFont systemFontOfSize:14]];
if(amountSize.width+stringsize.width > 250)
{
dosageButton.frame = CGRectMake(5, 27.5, 130, 30);
amountButton.frame = CGRectMake(140, 27.5, 160, 30);
}
else
{
[amountButton setFrame:CGRectMake(stringsize.width + 40, 27.5, amountSize.width + (amountSize.height * 2.1), 30)];
}
}
else
{
NSString *amountAndFormat = [NSString stringWithFormat:@"%@ %@", selectedQuantity, selectedFormatPlural];
[amountButton setTitle:amountAndFormat forState:UIControlStateNormal];
CGSize stringsize = [selectedStrength sizeWithFont:[UIFont systemFontOfSize:14]];
CGSize amountSize = [amountAndFormat sizeWithFont:[UIFont systemFontOfSize:14]];
if(amountSize.width + stringsize.width> 250)
{
dosageButton.frame = CGRectMake(5, 27.5, 130, 30);
amountButton.frame = CGRectMake(140, 27.5, 160, 30);
}
else
{
[amountButton setFrame:CGRectMake(stringsize.width + 40, 27.5, amountSize.width + (amountSize.height * 2.1), 30)];
}
}
}
[dosageButton addTarget:self action:@selector(showDosages:) forControlEvents:UIControlEventTouchUpInside];
[amountButton addTarget:self action:@selector(showAmount:) forControlEvents:UIControlEventTouchUpInside];
//[cell.contentView addSubview:dosageButton];
//[cell.contentView addSubview:amountButton];
//adding it to view instead of cell because of userInteraction.
//if I add it to cell.contentView and userInteractionEnabled = NO
//then the user can't press the button
//but if the it is enabled then they can click the cell and looks tacky!
[self.view addSubview:dosageButton];
[self.view addSubview:amountButton];
cell.userInteractionEnabled = NO;
}
if(indexPath.section == 1)
{
if(localName.count == 0)
{
//Nothing
}
else
{
CGRect longStringFrame = CGRectMake(12, 4, 250, 120);
//UILabel *longStringLabel = [[UILabel alloc] initWithFrame:longStringFrame];
UILabel *longStringLabel = [[UILabel alloc] initWithFrame:longStringFrame];
longStringLabel.backgroundColor = [UIColor clearColor];
longStringLabel.font = [UIFont systemFontOfSize:12];
longStringLabel.text = [NSString stringWithFormat:@"Something super duper long. Some really really long string that has a lot of information and cannot fit in one line so I have to use numberOfLines = 0 and NSLineBreakByWordWrapping. This string is really really really long.]];
longStringLabel.textColor = [UIColor blackColor];
longStringLabel.numberOfLines = 0;
longStringLabel.lineBreakMode = NSLineBreakByWordWrapping;
cell.textLabel.text = @"";
longStringLabel.tag = 123;
[cell.contentView addSubview:longStringLabel];
}
}
}
- (void) showDosages:(UIButton *)sender
{
[dosageButton removeFromSuperview];
[amountButton removeFromSuperview];
[[cell.contentView viewWithTag:123] removeFromSuperview];
NSLog(@"%@",[dosageButton superview]);
NSLog(@"%@",[amountButton superview]);
//Also tried it this way as well. Didn't work
//[dosageButton performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
//[amountButton performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
dispatch_async(someDispatch, ^{ NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString: [NSString stringWithFormat: @"http://somewebsite.com"]]]; [self performSelectorOnMainThread:@selector(fetchData:) withObject:data waitUntilDone:YES]; });
}
showAmount は showDosages に似ています