それで、
テキストタイトル、サブタイトルラベル、テキストフィールド（背景を美しくするためのボタン付き）を持つ20個のセルを持つテーブルビューがありますが、テーブルビューを数回スクロールした後、シミュレーターで速度が低下し始めることがわかりました. これはメモリリークだと思いますが、必要なものはすべて解放したと思っていました。私の（アマチュア）コードに関するコメントはありますか？
注: 以前、Quartz で角丸を使用してテキストビューの周りにボックスを描画しようとしましたが、ボックスのスクロールも劇的に遅くなりました。私のコードを破棄する前に、メモリ リークを調べてください ;P
注 2: PS コードをリベラルにして申し訳ありませんが、リークが見つかりません。
よろしく
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
CGRect frame; frame.origin.x = 5; frame.origin.y = 10; frame.size.width = 20; frame.size.height = 25;
//Disallow Selection (Blue Flash)
cell.selectionStyle = UITableViewCellSelectionStyleNone;
//Print Icon
UIImageView *imgLabel = [[UIImageView alloc] initWithFrame:frame];
imgLabel.tag = 1;
[cell.contentView addSubview:imgLabel];
[imgLabel release];
//Print Text
frame.origin.x = 30;
frame.origin.y = 5;
frame.size.width = CONST_Cell_width;
UILabel *nameLabel = [[UILabel alloc] initWithFrame:frame];
nameLabel.tag = 100;
[cell.contentView addSubview:nameLabel];
[nameLabel release];
//subtitleLabel Text
UILabel *subtitleLabel = [[UILabel alloc] initWithFrame:CGRectMake(30, 32, CONST_Cell_width, 40)];
subtitleLabel.tag = 101;
[cell.contentView addSubview:subtitleLabel];
[subtitleLabel release];
// detailLabel.layer.cornerRadius = 10;
}
//This bit is good!
//cell.textLabel.text = [[contentArray objectAtIndex:indexPath.row] objectForKey:@"Title"];
//cell.detailTextLabel.text = [[contentArray objectAtIndex:indexPath.row] objectForKey:@"Description"];
//Sets wrapping correctly
//cell.textLabel.numberOfLines = 0;
//cell.detailTextLabel.numberOfLines = 0;
//Setup Name to Cell
UILabel * nameLabel = (UILabel *) [cell.contentView viewWithTag:100];
[nameLabel setFont:[UIFont boldSystemFontOfSize:20.0]];
nameLabel.text = [[contentArray objectAtIndex:indexPath.row] objectForKey:@"Title"];
nameLabel.textColor = [UIColor blackColor];
nameLabel.backgroundColor = [UIColor clearColor];
nameLabel.numberOfLines = 1;
//Setup Subtitle
UILabel * subtitleLabel = (UILabel *) [cell.contentView viewWithTag:101];
[subtitleLabel setFont:[UIFont systemFontOfSize:15.0]];
subtitleLabel.textColor = [UIColor grayColor];
subtitleLabel.text = [[contentArray objectAtIndex:indexPath.row] objectForKey:@"Description"];
subtitleLabel.backgroundColor = [UIColor clearColor];
subtitleLabel.numberOfLines = 2;
//A Nice Button for rounded background effect..cheap i know
UIButton *roundedButtonType = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
roundedButtonType.frame = CGRectMake(30, 80, CONST_Cell_width, CONST_Text_height);
roundedButtonType.userInteractionEnabled = NO;
roundedButtonType.backgroundColor = [UIColor clearColor];
[cell.contentView addSubview:roundedButtonType];
[roundedButtonType release];
UITextView *detailLabel = [[UITextView alloc] initWithFrame:CGRectMake(30, 80, CONST_Cell_width, CONST_Text_height)];
detailLabel.tag = indexPath.row;
detailLabel.backgroundColor = [UIColor clearColor];
detailLabel.text = [NSString stringWithFormat:@"%d",indexPath.row];
detailLabel.font = [UIFont fontWithName:@"Helvetica" size:17];
detailLabel.delegate = self;
[cell.contentView addSubview:detailLabel];
[detailLabel release];
//NSLog(@"Made my way to cellForRowAtIndexPath. Enter some data!!!\n");
//DataPoint Name
NSString *keyname = [NSString stringWithFormat:@"data%d",indexPath.row +1];
NSString *datavalue = [clientDataArray objectForKey:keyname];
//DataValue (can be null)
//NSString *dataValue = [clientDataArray objectForKey:keyname] ;
if (datavalue == [NSNull null] ) datavalue = @"(blank)";
detailLabel.text = datavalue;
return cell;
[datavalue release];
[keyname release];
[clientDataArray release];
}