Ios UITableView单元格所选颜色?
我已经创建了一个自定义的Ios UITableView单元格所选颜色?,ios,objective-c,uitableview,selection-color,Ios,Objective C,Uitableview,Selection Color,我已经创建了一个自定义的UITableViewCell。表视图显示的数据很好。我陷入的困境是,当用户触摸tableview的单元格时,我想显示单元格的背景色,而不是突出显示单元格选择的默认[blue color]值。 我使用此代码,但什么也没发生: cell.selectedBackgroundView.backgroundColor=[UIColor blackColor]; 我认为你的思路是对的,但是根据selectedBackgroundView的类定义: 对于普通样式表(UITable
UITableViewCell
。表视图显示的数据很好。我陷入的困境是,当用户触摸tableview的单元格时,我想显示单元格的背景色,而不是突出显示单元格选择的默认[blue color]值。
我使用此代码,但什么也没发生:
cell.selectedBackgroundView.backgroundColor=[UIColor blackColor];
我认为你的思路是对的,但是根据
selectedBackgroundView
的类定义:
对于普通样式表(UITableViewStylePlain)中的单元格,默认值为零;对于节组表(UITableViewStyleGrouped),默认值为非零
因此,如果您使用的是普通样式表,则需要在初始化时分配一个具有所需背景颜色的新UIView
,然后将其分配给selectedBackgroundView
或者,您可以使用:
cell.selectionStyle = UITableViewCellSelectionStyleGray;
如果选定单元格时只需要灰色背景。希望这有帮助。为表格单元格创建一个自定义单元格,并在自定义单元格类中。m将代码放在下面,它将正常工作。您需要将所需的彩色图像放置在
selectionBackground
ui图像中
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
UIImage *selectionBackground = [UIImage imageNamed:@"yellow_bar.png"];
UIImageView *iview=[[UIImageView alloc] initWithImage:selectionBackground];
self.selectedBackgroundView=iview;
}
不需要自定义单元格。如果只想更改单元格的选定颜色,可以执行以下操作: 目标-C:
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor redColor];
[cell setSelectedBackgroundView:bgColorView];
let bgColorView = UIView()
bgColorView.backgroundColor = UIColor.red
cell.selectedBackgroundView = bgColorView
Swift:
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor redColor];
[cell setSelectedBackgroundView:bgColorView];
let bgColorView = UIView()
bgColorView.backgroundColor = UIColor.red
cell.selectedBackgroundView = bgColorView
我想指出,XIB编辑器为您提供了以下标准选项: 部分:蓝色/灰色/无 (带选项的右侧列,第四个选项卡,第一组“表格视图单元格”,第四个子组,三项中的第一项显示“选择”)
可能通过选择正确的标准选项可以实现您想要的操作。如果您有一个分组表,每个部分只有一个单元格,只需在代码中添加这一行:
bgColorView.layer.cornerRadius=10代码>
UIView *bgColorView = [[UIView alloc] init];
[bgColorView setBackgroundColor:[UIColor redColor]];
bgColorView.layer.cornerRadius = 10;
[cell setSelectedBackgroundView:bgColorView];
[bgColorView release];
别忘了导入QuartzCore。关于Christian显示分组表格圆角背景的另一个技巧
如果我对单元格使用cornerRadius=10
,它将显示四个角的圆角选择背景。这与表视图的默认UI不同
所以,我想一种简单的方法来解决它,方法是转弯半径。
从下面的代码中可以看到,检查单元的位置(顶部、底部、中部或顶部底部),然后再添加一个子层以隐藏上角或下角。这只是显示了与默认表视图的选择背景完全相同的外观
我用iPadsplitterview
测试了这段代码。您可以根据需要更改patchLayer的帧位置
请让我知道是否有更简单的方法来达到同样的结果
if (tableView.style == UITableViewStyleGrouped)
{
if (indexPath.row == 0)
{
cellPosition = CellGroupPositionAtTop;
}
else
{
cellPosition = CellGroupPositionAtMiddle;
}
NSInteger numberOfRows = [tableView numberOfRowsInSection:indexPath.section];
if (indexPath.row == numberOfRows - 1)
{
if (cellPosition == CellGroupPositionAtTop)
{
cellPosition = CellGroupPositionAtTopAndBottom;
}
else
{
cellPosition = CellGroupPositionAtBottom;
}
}
if (cellPosition != CellGroupPositionAtMiddle)
{
bgColorView.layer.cornerRadius = 10;
CALayer *patchLayer;
if (cellPosition == CellGroupPositionAtTop)
{
patchLayer = [CALayer layer];
patchLayer.frame = CGRectMake(0, 10, 302, 35);
patchLayer.backgroundColor = YOUR_BACKGROUND_COLOR;
[bgColorView.layer addSublayer:patchLayer];
}
else if (cellPosition == CellGroupPositionAtBottom)
{
patchLayer = [CALayer layer];
patchLayer.frame = CGRectMake(0, 0, 302, 35);
patchLayer.backgroundColor = YOUR_BACKGROUND_COLOR;
[bgColorView.layer addSublayer:patchLayer];
}
}
}
下面是分组表所需代码的重要部分。选择某个区域中的任何单元格时,第一行的颜色将发生变化。在最初未将cellselectionstyle设置为none的情况下,当用户单击第0行时,会出现注释性的双重重新加载,此时单元格将更改为bgColorView,然后淡出并再次重新加载bgColorView。祝你好运,如果有更简单的方法,请告诉我
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if ([indexPath row] == 0)
{
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UIView *bgColorView = [[UIView alloc] init];
bgColorView.layer.cornerRadius = 7;
bgColorView.layer.masksToBounds = YES;
[bgColorView setBackgroundColor:[UIColor colorWithRed:.85 green:0 blue:0 alpha:1]];
[cell setSelectedBackgroundView:bgColorView];
UIColor *backColor = [UIColor colorWithRed:0 green:0 blue:1 alpha:1];
cell.backgroundColor = backColor;
UIColor *foreColor = [UIColor colorWithWhite:1 alpha:1];
cell.textLabel.textColor = foreColor;
cell.textLabel.text = @"row0";
}
else if ([indexPath row] == 1)
{
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UIColor *backColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:1];
cell.backgroundColor = backColor;
UIColor *foreColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:1];
cell.textLabel.textColor = foreColor;
cell.textLabel.text = @"row1";
}
else if ([indexPath row] == 2)
{
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UIColor *backColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:1];
cell.backgroundColor = backColor;
UIColor *foreColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:1];
cell.textLabel.textColor = foreColor;
cell.textLabel.text = @"row2";
}
return cell;
}
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSIndexPath *path = [NSIndexPath indexPathForRow:0 inSection:[indexPath section]];
UITableViewCell *cell = [tableView cellForRowAtIndexPath:path];
[cell setSelectionStyle:UITableViewCellSelectionStyleBlue];
[tableView selectRowAtIndexPath:path animated:YES scrollPosition:UITableViewScrollPositionNone];
}
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tvStat cellForRowAtIndexPath:indexPath];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
}
#pragma mark Table view Gestures
-(IBAction)singleTapFrom:(UIGestureRecognizer *)tapRecog
{
CGPoint tapLoc = [tapRecog locationInView:tvStat];
NSIndexPath *tapPath = [tvStat indexPathForRowAtPoint:tapLoc];
NSIndexPath *seleRow = [tvStat indexPathForSelectedRow];
if([seleRow section] != [tapPath section])
[self tableView:tvStat didDeselectRowAtIndexPath:seleRow];
else if (seleRow == nil )
{}
else if([seleRow section] == [tapPath section] || [seleRow length] != 0)
return;
if(!tapPath)
[self.view endEditing:YES];
[self tableView:tvStat didSelectRowAtIndexPath:tapPath];
}
当表视图样式为普通样式时,这很容易,但在组样式中,这有点麻烦,我通过以下方法解决:
CGFloat cellHeight = [self tableView:tableView heightForRowAtIndexPath:indexPath];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, kGroupTableViewCellWidth+2, cellHeight)];
view.backgroundColor = kCommonHighlightedColor;
cell.selectedBackgroundView = view;
[view release];
UIRectCorner cornerFlag = 0;
CGSize radii = CGSizeMake(0, 0);
NSInteger theLastRow = --> (yourDataSourceArray.count - 1);
if (indexPath.row == 0) {
cornerFlag = UIRectCornerTopLeft | UIRectCornerTopRight;
radii = CGSizeMake(10, 10);
} else if (indexPath.row == theLastRow) {
cornerFlag = UIRectCornerBottomLeft | UIRectCornerBottomRight;
radii = CGSizeMake(10, 10);
}
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:cornerFlag cornerRadii:radii];
CAShapeLayer *shapeLayer = [CAShapeLayer layer];
shapeLayer.path = maskPath.CGPath;
view.layer.mask = shapeLayer;
注意到kGroupTableViewCellWidth,我将其定义为300,它是iPhone中group table view单元格宽度的宽度
[cell setSelectionStyle:UITableViewCellSelectionStyleGray];
请确保您已经使用了上行来使用选择效果,这是符合Maciej Swic标准的最佳解决方案
除此之外,您还可以在单元配置中声明Swic,通常在以下位置声明:
-(UITableView单元格*)tableView:(UITableView*)tableView单元格for行索引路径:(nsindepath*)indepath
为了增加效果,您可以使用RGB值作为自定义颜色外观,而不是系统颜色。在我的代码中,我是这样实现的:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
}
static NSString *CellIdentifier = @"YourCustomCellName";
MakanTableCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
if (cell == nil) {
cell = [[[NSBundle mainBundle]loadNibNamed:@"YourCustomCellClassName" owner:self options:nil]objectAtIndex:0];
}
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor colorWithRed:255.0/256.0 green:239.0/256.0 blue:49.0/256.0 alpha:1];
bgColorView.layer.cornerRadius = 7;
bgColorView.layer.masksToBounds = YES;
[cell setSelectedBackgroundView:bgColorView];
return cell;
}
让我知道这是否也适用于你。您可以使用角落半径
数字来显示选定单元格角落的效果。我的方法与其他人略有不同,它在触摸时而不是被选中后反映选择。我有一个子类UITableViewCell。您所要做的就是在触摸事件中设置背景色,模拟触摸时的选择,然后在setSelected函数中设置背景色。在selSelected功能中设置背景色允许取消选择单元格。确保将触摸事件传递给super,否则电池将不会像其选定的那样实际工作
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
self.backgroundColor = UIColor(white: 0.0, alpha: 0.1)
super.touchesBegan(touches, withEvent: event)
}
override func touchesCancelled(touches: NSSet!, withEvent event: UIEvent!) {
self.backgroundColor = UIColor.clearColor()
super.touchesCancelled(touches, withEvent: event)
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
self.backgroundColor = selected ? UIColor(white: 0.0, alpha: 0.1) : UIColor.clearColor()
}
如果要向单元格添加自定义高亮显示的颜色(单元格包含按钮、标签、图像等),我将执行以下步骤:
例如,如果您想要选定的黄色:
1) 创建一个不透明度为20%(黄色)的适合所有单元格的视图,称为backgroundselectedView
2) 在单元控制器中写入以下内容:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
self.backgroundselectedView.alpha=1;
[super touchesBegan:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
self.backgroundselectedView.alpha=0;
[super touchesEnded:touches withEvent:event];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
self.backgroundSelectedImage.alpha=0;
[super touchesCancelled:touches withEvent:event];
}
要添加所有单元格的背景(使用Maciej的答案):
for(int section=0;section<[self.tableView numberOfSections];section++){
对于(int row=0;row<[self.tableView numberofrowsinssection:section];row++){
nsindepath*cellPath=[nsindepath indexPathForRow:row-instation:section];
UITableViewCell*cell=[self.tableView cellForRowAtIndexPath:cellPath];
//与每个细胞有关的东西
UIView*bgColorView=[[UIView alloc]init];
bgColorView.backgroundColor=[UIColor redColor];
[单元格设置选定背景视图:bgColorView];
}
}
以下内容在iOS 8中适用
我必须将选择样式设置为UITableViewCellSelectionStyleDefault
,自定义背景色才能工作。如果使用任何其他样式,则将忽略自定义背景色。由于之前的答案需要将style设置为none,行为似乎发生了变化
单元格的完整代码如下所示:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"MyCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// This is how you change the background color
cell.selectionStyle = UITableViewCellSelectionStyleDefault;
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor redColor];
[cell setSelectedBackgroundView:bgColorView];
return cell;
}
-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
UIView *view = [[UIView alloc] init];
[view setBackgroundColor:[UIColor redColor]];
[cell setSelectedBackgroundView:view];
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Set background color
let view = UIView()
view.backgroundColor = UIColor.redColor()
selectedBackgroundView = view
}
yourCell.selectionStyle = .None
override func setSelected(selected: Bool, animated: Bool) {
// Configure the view for the selected state
super.setSelected(selected, animated: animated)
let selView = UIView()
selView.backgroundColor = UIColor( red: 5/255, green: 159/255, blue:223/255, alpha: 1.0 )
self.selectedBackgroundView = selView
}
UIView *customColorView = [[UIView alloc] init];
customColorView.backgroundColor = [UIColor colorWithRed:55 / 255.0
green:141 / 255.0
blue:211 / 255.0
alpha:1.0];
cell.selectedBackgroundView = customColorView;
return cell;
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = super.tableView(tableView, cellForRowAt: indexPath)
cell.contentView.backgroundColor = UIColor.red
}
class MyTableViewCell : UITableViewCell {
var defaultStateColor:UIColor?
var hitStateColor:UIColor?
override func awakeFromNib(){
super.awakeFromNib()
self.selectionStyle = .None
}
// if you are overriding init you should set selectionStyle = .None
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let hitColor = hitStateColor {
self.contentView.backgroundColor = hitColor
}
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let defaultColor = defaultStateColor {
self.contentView.backgroundColor = defaultColor
}
}
override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
if let defaultColor = defaultStateColor {
self.contentView.backgroundColor = defaultColor
}
}
}
let view = UIView()
view.backgroundColor = UIColor.red
cell.selectedBackgroundView = view
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:[cellIdArray objectAtIndex:indexPath.row] forIndexPath:indexPath];
// Configure the cell...
cell.backgroundView =
[[UIImageView alloc] init] ;
cell.selectedBackgroundView =[[UIImageView alloc] init];
UIImage *rowBackground;
UIImage *selectionBackground;
rowBackground = [UIImage imageNamed:@"cellBackgroundDarkGrey.png"];
selectionBackground = [UIImage imageNamed:@"selectedMenu.png"];
((UIImageView *)cell.backgroundView).image = rowBackground;
((UIImageView *)cell.selectedBackgroundView).image = selectionBackground;
return cell;
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")! as UITableViewCell
cell.selectedBackgroundView = UIImageView()
cell.backgroundView=UIImageView()
let selectedBackground : UIImageView = cell.selectedBackgroundView as! UIImageView
selectedBackground.image = UIImage.init(named:"selected.png");
let backGround : UIImageView = cell.backgroundView as! UIImageView
backGround.image = UIImage.init(named:"defaultimage.png");
return cell
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
// Configure the view for the selected state
if (selected) {
[self setBackgroundColor: CELL_SELECTED_BG_COLOR];
[self.contentView setBackgroundColor: CELL_SELECTED_BG_COLOR];
}else{
[self setBackgroundColor: [UIColor clearColor]];
[self.contentView setBackgroundColor: [UIColor clearColor]];
}
}
extension UITableViewCell {
var selectionColor: UIColor {
set {
let view = UIView()
view.backgroundColor = newValue
self.selectedBackgroundView = view
}
get {
return self.selectedBackgroundView?.backgroundColor ?? UIColor.clear
}
}
}
let backgroundColorView = UIView()
backgroundColorView.backgroundColor = UIColor.red
UITableViewCell.appearance().selectedBackgroundView = backgroundColorView
extension UITableViewCell{
func removeCellSelectionColour(){
let clearView = UIView()
clearView.backgroundColor = UIColor.clear
UITableViewCell.appearance().selectedBackgroundView = clearView
}
}
let bgColorView = UIView()
bgColorView.backgroundColor = .red
self.selectedBackgroundView = bgColorView
override func setSelected(_ selected: Bool, animated: Bool)
{
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
let bgColorView = UIView()
bgColorView.backgroundColor = .red
self.selectedBackgroundView = bgColorView
}