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UITableViewのパフォーマンスを向上させたいと考えて、私は自分のUITableViewCellのすべての設定をcellForRowAtIndexPathの外に再配置することを考えています。cellForRowAtIndexPath以外のUITableViewCellを設定する場所は？ Objective-C
この時点で、cellviewRowAtIndexPath内に設定したテーブルビュー内にカスタムセルがいくつかあります。しかし、このために、私は自分のテーブルビュー内をスクロールするたびに、セルが画面上に表示されなければならないたびに設定がやり直され、遅延が発生します。
私は、セルにクラス変数を使用しても、効果を持たない設定をviewDidLoad内に配置しようとしました。あなたがどこで私の細胞の設定をどこに移すことができるか考えていますか？特にそれが可能ならば？
ありがとうございました。素敵な日です！
EDIT：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier = [menuItems objectAtIndex:indexPath.row];
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.delegate = self;
if ([appliedTheme hasPrefix:@"DarkMode"]) {
self.tableView.backgroundColor = [UIColor colorWithRed:0.20 green:0.20 blue:0.20 alpha:1.0];
cell.backgroundColor = [UIColor colorWithRed:0.20 green:0.20 blue:0.20 alpha:1.0];
cell.cardView.backgroundColor = [UIColor colorWithRed:0.30 green:0.30 blue:0.30 alpha:1.0];
cell.webServerIntroLabel.textColor = [UIColor whiteColor];
cell.webServerOptionsTitle.textColor = [UIColor whiteColor];
cell.webServerOptionsReachableAtLabel.textColor = [UIColor whiteColor];
}else {
self.tableView.backgroundColor = [UIColor colorWithRed:0.92 green:0.92 blue:0.92 alpha:1.0];
cell.backgroundColor = [UIColor colorWithRed:0.92 green:0.92 blue:0.92 alpha:1.0];
cell.cardView.backgroundColor = [UIColor whiteColor];
cell.webServerIntroLabel.textColor = [UIColor blackColor];
cell.webServerOptionsTitle.textColor = [UIColor blackColor];
cell.webServerOptionsReachableAtLabel.textColor = [UIColor blackColor];
}
if ([CellIdentifier isEqualToString:@"webServerIntro"]) {
cell.webServerIntroImageView.image = [UIImage imageNamed:webServerIntroIconToShow];
cell.webServerIntroLabel.adjustsFontSizeToFitWidth = YES;
cell.webServerIntroLabel.numberOfLines = 0;
[cell.webServerIntroLabel sizeToFit];
cell.webServerIntroLabel.text = @"Some text";
}else if ([CellIdentifier isEqualToString:@"webServerOptions"]) {
cell.webServerOptionsTitle.adjustsFontSizeToFitWidth = YES;
cell.webServerOptionsTitle.text = NSLocalizedString(@"Web Server Options", nil);
cell.webServerOptionsStatusLabel.adjustsFontSizeToFitWidth = YES;
if (!webServerStarted) {
cell.webServerOptionsImageView.image = [UIImage imageNamed:@"Not-Checked"];
cell.webServerOptionsStatusLabel.text = NSLocalizedString(@"Not Running", nil);
cell.serverURLLabel.text = NSLocalizedString(@"Not Reachable", nil);
cell.ipAddressURLLabel.text = NSLocalizedString(@"Not Reachable", nil);
[cell.startStopWebServerButton setTitle:NSLocalizedString(@"Start Web Server", nil) forState:UIControlStateNormal];
cell.webServerStartedBool = NO;
}else {
NSString *serverURL = [self deviceName];
serverURL = [serverURL stringByReplacingOccurrencesOfString:@" " withString:@"-"];
cell.webServerOptionsImageView.image = [UIImage imageNamed:@"Checked"];
cell.webServerOptionsStatusLabel.text = NSLocalizedString(@"Running", nil);
cell.serverURLLabel.text = [NSString stringWithFormat:@"http://%@.local", serverURL];
cell.ipAddressURLLabel.text = [NSString stringWithFormat:@"%@", webUploader.serverURL];
[cell.startStopWebServerButton setTitle:NSLocalizedString(@"Stop Web Server", nil) forState:UIControlStateNormal];
cell.webServerStartedBool = YES;
}
cell.webServerOptionsStatusLabel.textColor = [UIColor lightGrayColor];
cell.webServerOptionsReachableAtLabel.adjustsFontSizeToFitWidth = YES;
cell.webServerOptionsReachableAtLabel.text = NSLocalizedString(@"Reachable At :", nil);
cell.ipAddressURLLabel.adjustsFontSizeToFitWidth = YES;
cell.ipAddressURLLabel.textColor = [UIColor lightGrayColor];
cell.ipAddressURLLabel.layer.borderWidth = 1.0f;
cell.ipAddressURLLabel.layer.borderColor = [[UIColor lightGrayColor] CGColor];
cell.ipAddressURLLabel.layer.cornerRadius = 5;
cell.serverURLLabel.adjustsFontSizeToFitWidth = YES;
cell.serverURLLabel.textColor = [UIColor lightGrayColor];
cell.serverURLLabel.layer.borderWidth = 1.0f;
cell.serverURLLabel.layer.borderColor = [[UIColor lightGrayColor] CGColor];
cell.serverURLLabel.layer.cornerRadius = 5;
cell.startStopWebServerButton.layer.borderWidth = 1.0f;
cell.startStopWebServerButton.layer.borderColor = [[UIColor clearColor] CGColor];
cell.startStopWebServerButton.layer.cornerRadius = 5;
cell.startStopWebServerButton.titleLabel.adjustsFontSizeToFitWidth = YES;
if ([appliedTheme isEqualToString:@"Default-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0 green:0.478 blue:0.875 alpha:1]; /*#007ADF : Bleu iOS*/
}else if ([appliedTheme isEqualToString:@"Red-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.90 green:0.07 blue:0.00 alpha:1.0]; /*#E61100 : Rouge*/
}else if ([appliedTheme isEqualToString:@"Orange-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.83 green:0.33 blue:0.00 alpha:1.0]; /*#D35400 : Orange*/
}else if ([appliedTheme isEqualToString:@"Yellow-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.95 green:0.61 blue:0.07 alpha:1.0]; /*#F39C12 : Jaune*/
}else if ([appliedTheme isEqualToString:@"Green-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.15 green:0.68 blue:0.38 alpha:1.0]; /*#27AE60 : Vert*/
}else if ([appliedTheme isEqualToString:@"Purple-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.56 green:0.27 blue:0.68 alpha:1.0]; /*#8E44AD : Violet*/
}else if ([appliedTheme isEqualToString:@"Gray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.74 green:0.76 blue:0.78 alpha:1.0]; /*#BDC3C7 : Gris*/
}else if ([appliedTheme isEqualToString:@"DarkGray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.50 green:0.55 blue:0.55 alpha:1.0]; /*#7F8C8D : Gris foncé*/
}else if ([appliedTheme isEqualToString:@"DesaturatedBlue-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.17 green:0.24 blue:0.31 alpha:1.0]; /*#2C3E50 : Bleu désaturé*/
}else if ([appliedTheme isEqualToString:@"VeryDarkGray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.20 green:0.20 blue:0.20 alpha:1.0]; /*#333333 : Gris très foncé*/
}else if ([appliedTheme isEqualToString:@"Black-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.00 green:0.00 blue:0.00 alpha:1.0]; /*#000000 : Noir*/
}else if ([appliedTheme isEqualToString:@"DarkModeDefault-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0 green:0.478 blue:0.875 alpha:1]; /*#007ADF : Bleu iOS*/
}else if ([appliedTheme isEqualToString:@"DarkModeRed-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.90 green:0.07 blue:0.00 alpha:1.0]; /*#E61100 : Rouge*/
}else if ([appliedTheme isEqualToString:@"DarkModeOrange-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.83 green:0.33 blue:0.00 alpha:1.0]; /*#D35400 : Orange*/
}else if ([appliedTheme isEqualToString:@"DarkModeYellow-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.95 green:0.61 blue:0.07 alpha:1.0]; /*#F39C12 : Jaune*/
}else if ([appliedTheme isEqualToString:@"DarkModeGreen-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.15 green:0.68 blue:0.38 alpha:1.0]; /*#27AE60 : Vert*/
}else if ([appliedTheme isEqualToString:@"DarkModePurple-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.56 green:0.27 blue:0.68 alpha:1.0]; /*#8E44AD : Violet*/
}else if ([appliedTheme isEqualToString:@"DarkModeGray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.74 green:0.76 blue:0.78 alpha:1.0]; /*#BDC3C7 : Gris*/
}else if ([appliedTheme isEqualToString:@"DarkModeDarkGray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.50 green:0.55 blue:0.55 alpha:1.0]; /*#7F8C8D : Gris foncé*/
}else if ([appliedTheme isEqualToString:@"DarkModeDesaturatedBlue-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.17 green:0.24 blue:0.31 alpha:1.0]; /*#2C3E50 : Bleu désaturé*/
}else if ([appliedTheme isEqualToString:@"DarkModeVeryDarkGray-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.20 green:0.20 blue:0.20 alpha:1.0]; /*#333333 : Gris très foncé*/
}else if ([appliedTheme isEqualToString:@"DarkModeBlack-Theme"]) {
cell.startStopWebServerButton.backgroundColor = [UIColor colorWithRed:0.00 green:0.00 blue:0.00 alpha:1.0]; /*#000000 : Noir*/
}
}else {
}
return cell;
}
コードを表示してください。 'cellForRowAt'は何度も呼び出されるので、比較的小さくてすばやい関数でなければなりません。このメソッドでは、データをフェッチしたり、複雑な計算を実行したりしないでください。 – Paulw11
編集中のコードを見つけることができます！ – Synny